Storage mechanism suitable for robot welding quick-change welding head

Abstract

The utility model discloses a storage mechanism suitable for robot welding quick-change welding heads, which comprises two welding head library connecting columns arranged oppositely, a mounting plate, a welding head mechanism, a quick-change connecting plate fixedly connected with the welding head mechanism, and a quick-change disc fixedly mounted on the quick-change connecting plate, the upper ends of the two welding head library connecting columns are fixedly connected with the mounting plate, and the lower ends of the two welding head library connecting columns are fixedly connected with the mounting plate. A positioning structure is arranged between the lower end of the quick-change connecting plate and the mounting plate, the two sides of the lower end of the quick-change connecting plate are connected with the mounting plate through locking structures, and the positioning structure is located between the two locking structures. The storage mechanism suitable for the robot welding quick-change welding head has the advantages that the storage precision of the quick-change welding head can be improved, the equipment failure rate is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding head storage mechanisms, in particular to a storage mechanism suitable for robot welding quick-change welding heads. Background Art

[0002] In robot multi-head welding equipment, the standard quick-change plate is designed to achieve the interchange of welding heads of different sizes / angles / positions. The current mainstream welding head storage solution is large-gap pin hole matching positioning + cylinder locking. However, there are the following problems during use:

[0003] 1. The large-gap pin hole positioning + cylinder locking results in insufficient positioning accuracy. Under conditions of equipment stability, wear, and insufficient maintenance, the robot R side and the tool T side (welding head) get stuck when swapping, and it takes a long time to unlock and re-adjust the robot swap trajectory;

[0004] 2. When the storage mechanism is stuck, the cylinder is difficult to disassemble. The entire storage mechanism needs to be disassembled, and then the cylinder needs to be disassembled and adjusted, which is time-consuming and cumbersome. When stuck, the mounting plate used to install the cylinder is very easy to tilt, bend and deform. Even after disassembly, it is difficult to reset the cylinder installation to its original state. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by this patent application is how to provide a storage mechanism suitable for robot welding quick-change welding heads that can improve the storage accuracy of quick-change welding heads, reduce equipment failure rate, and improve production efficiency.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A storage mechanism suitable for robot welding quick-change welding heads, comprising two welding head library connecting columns arranged opposite to each other, a mounting plate, a welding head mechanism, a quick-change connecting plate fixedly connected to the welding head mechanism, and a quick-change plate fixedly installed on the quick-change connecting plate. The upper ends of the two welding head library connecting columns are fixedly connected to the mounting plate.

[0008] A positioning structure is provided between the lower end of the quick-change connecting plate and the mounting plate. Both sides of the lower end of the quick-change connecting plate are connected to the mounting plate via locking structures, and the positioning structure is located between the two locking structures.

[0009] In this way, when the welding head is quickly changed, the quick-change connecting plate and the mounting plate are positioned by the positioning structure, and the quick-change disk is locked by the locking structure, which can improve the repeated positioning accuracy and reduce the equipment failure rate.

[0010] Among them, the positioning structure includes a positioning cone block fixedly installed on the mounting plate, the two sides of the positioning cone block are inclined external positioning inclined surfaces, the lower end of the quick-change connecting plate is fixed with a positioning sleeve block, the positioning sleeve block is provided with a positioning port that cooperates with the positioning cone block, and the two sides of the positioning port are internal positioning inclined surfaces.

[0011] Wherein, the locking structure comprises a locking cylinder, the cylinder body of the locking cylinder is fixedly connected to the adjustment plate by a countersunk screw, and the adjustment plate is fixedly connected to the mounting plate by a set screw; a rounded corner is arranged at the end of the cylinder rod of the locking cylinder, a sleeve is fixedly installed on the cylinder body of the locking cylinder, the sleeve is located on the outer side of the cylinder rod of the locking cylinder, a plurality of limiting holes are circumferentially penetrated by the sleeve, the outer opening size of the limiting hole is smaller than the inner opening size, a steel ball is arranged in the limiting hole, the steel ball is located between the limiting hole and the cylinder rod, the outer opening size of the limiting hole is smaller than the diameter size of the steel ball, and the outer side of the steel ball can pass through the limiting hole;

[0012] The mounting plate is provided with a clearance hole directly opposite to the sleeve;

[0013] A mounting hole is provided at the lower end of the quick-change connecting plate, a locking sleeve is fixedly installed in the mounting hole, a locking protrusion is protruded inwardly at the lower end of the locking sleeve, the inner diameter of the locking protrusion is larger than the outer diameter of the sleeve and smaller than the maximum diameter of the circle where the steel ball is located when it extends out of the limiting hole.

[0014] Wherein, the quick-change connecting plate is fixedly mounted with a dustproof plate facing the mounting hole.

[0015] Among them, an adjusting nut is fixed on the adjusting plate, an adjusting screw is connected to the inner thread of the adjusting nut, and a through hole is arranged on the adjusting plate directly facing the adjusting screw.

[0016] In summary, the storage mechanism for the quick-change welding head of the robot welding has the advantages of improving the storage accuracy of the quick-change welding head, reducing the equipment failure rate, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic diagram of the structure of a storage mechanism suitable for a robot welding quick-change welding head.

[0018] Figure 2 for Figure 1 Schematic diagram of another orientation.

[0019] Figure 3 It is a partial schematic diagram of a storage mechanism suitable for a robot welding quick-change welding head according to the utility model.

[0020] Figure 4 A schematic diagram of the locking structure.

[0021] Figure 5 A cross-sectional view of the locking sleeve. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings. In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "upper, lower" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0023] like Figure 1-5 As shown, a storage mechanism suitable for robot welding quick-change welding heads includes two welding head library connecting columns 1 arranged opposite to each other, a mounting plate 2, a welding head mechanism 3, a quick-change connecting plate 4 fixedly connected to the welding head mechanism, and a quick-change disk 5 fixedly installed on the quick-change connecting plate. The upper ends of the two welding head library connecting columns are fixedly connected to the mounting plate.

[0024] A positioning structure is provided between the lower end of the quick-change connecting plate and the mounting plate. Both sides of the lower end of the quick-change connecting plate are connected to the mounting plate via locking structures, and the positioning structure is located between the two locking structures.

[0025] In this way, when the welding head is quickly changed, the quick-change connecting plate and the mounting plate are positioned by the positioning structure, and the quick-change disk is locked by the locking structure, which can improve the repeated positioning accuracy and reduce the equipment failure rate.

[0026] During implementation, the positioning structure includes a positioning cone block 6 fixedly mounted on the mounting plate, the two sides of the positioning cone block are inclined external positioning slopes, a positioning sleeve block 7 is fixed to the lower end of the quick-change connecting plate, the positioning sleeve block is provided with a positioning port that cooperates with the positioning cone block, and the two sides of the positioning port are internal positioning slopes.

[0027] In this way, by cooperating between the positioning cone block and the positioning sleeve block, the positioning opening is located outside the positioning cone block, and the cooperation between the outer positioning inclined surface and the inner positioning inclined surface is utilized to avoid positioning torsion and improve positioning accuracy.

[0028] During implementation, the locking structure includes a locking cylinder 8, the cylinder body of the locking cylinder is fixedly connected to the adjustment plate 9 by countersunk screws, and the adjustment plate is fixedly connected to the mounting plate by set screws 10; a rounded corner 12 is provided at the end of the cylinder rod 11 of the locking cylinder, a sleeve 13 is fixedly installed on the cylinder body of the locking cylinder, the sleeve is located on the outside of the cylinder rod of the locking cylinder, a plurality of limiting holes are circumferentially penetrated by the sleeve, the outer opening size of the limiting hole is smaller than the inner opening size, a steel ball 14 is provided in the limiting hole, the steel ball is located between the limiting hole and the cylinder rod, the outer opening size of the limiting hole is smaller than the diameter size of the steel ball, and the outer side of the steel ball can pass through the limiting hole;

[0029] The mounting plate is provided with a clearance hole directly opposite to the sleeve;

[0030] A mounting hole is provided at the lower end of the quick-change connecting plate, in which a locking sleeve 15 is fixedly installed. A locking protrusion 16 is protruded inwardly from the lower end of the locking sleeve, and the inner diameter of the locking protrusion is larger than the outer diameter of the sleeve and smaller than the maximum diameter of the circle where the steel ball extends out of the limiting hole.

[0031] In this way, during installation, the quick-change connecting plate moves downward, the cylinder rod of the locking cylinder contracts downward, the locking sleeve moves to the outside of the sleeve, and the cylinder rod of the locking cylinder extends upward, pushing the steel ball outward through the rounded corners, and the limit hole limits the steel ball to prevent the steel ball from separating from the sleeve, and the locking sleeve is locked and limited by the steel ball. When it is necessary to release the lock, the cylinder rod of the locking cylinder contracts downward to release the pressing force on the steel ball, and when the quick-change connecting plate moves upward, it pushes the steel ball inward into the sleeve to release the lock.

[0032] The upper end and the lower end of the locking protrusion at the lower end of the locking sleeve are both inclined surfaces, which can better promote the movement of the steel ball.

[0033] By installing the cylinder through the adjustment plate, the cylinder can be installed from the lower end of the mounting plate. Compared with the current method of directly installing the cylinder and the mounting plate, the lower installation method can facilitate the installation and removal of the cylinder without completely disassembling the entire structure. The current upper installation method requires the cylinder to be disassembled from top to bottom, which requires complete disassembly and is time-consuming and laborious.

[0034] During implementation, the quick-change connecting plate is fixedly mounted with a dustproof plate 17 facing the mounting hole to prevent dust from entering the mounting hole.

[0035] During implementation, an adjusting nut 18 is fixed on the adjusting plate, an adjusting screw 19 is connected to the inner thread of the adjusting nut, and a through hole is provided on the adjusting plate directly opposite to the adjusting screw. By setting the adjusting nut and the adjusting screw, the angle and height of the adjusting plate can be adjusted by adjusting the distance between the adjusting screw and the mounting plate, so that the positions of the two cylinders can be better corrected and the mounting accuracy can be improved.

[0036] Finally, it should be noted that those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these modifications and variations.

Claims

1. A storage mechanism for quick-change welding heads of robot welding, comprising two welding head library connecting columns arranged opposite to each other, a mounting plate, a welding head mechanism, a quick-change connecting plate fixedly connected to the welding head mechanism, and a quick-change plate fixedly mounted on the quick-change connecting plate, wherein the upper ends of the two welding head library connecting columns are fixedly connected to the mounting plate, and characterized in that: A positioning structure is provided between the lower end of the quick-change connecting plate and the mounting plate. Both sides of the lower end of the quick-change connecting plate are connected to the mounting plate via locking structures, and the positioning structure is located between the two locking structures.

2. A storage mechanism for a quick-change welding head for robot welding according to claim 1, characterized in that: The positioning structure includes a positioning cone block fixedly mounted on a mounting plate, the two sides of the positioning cone block are inclined outer positioning inclined surfaces, a positioning sleeve block is fixed to the lower end of the quick-change connecting plate, the positioning sleeve block is provided with a positioning opening that cooperates with the positioning cone block, and the two sides of the positioning opening are inner positioning inclined surfaces.

3. The storage mechanism for a quick-change welding head for robot welding according to claim 1, characterized in that: The locking structure comprises a locking cylinder, the cylinder body of the locking cylinder is fixedly connected to the adjustment plate by countersunk screws, and the adjustment plate is fixedly connected to the mounting plate by set screws; a rounded corner is arranged at the end of the cylinder rod of the locking cylinder, a sleeve is fixedly installed on the cylinder body of the locking cylinder, the sleeve is located on the outside of the cylinder rod of the locking cylinder, a plurality of limiting holes are arranged through the circumference of the sleeve, the outer opening size of the limiting hole is smaller than the inner opening size, a steel ball is arranged in the limiting hole, the steel ball is located between the limiting hole and the cylinder rod, the outer opening size of the limiting hole is smaller than the diameter size of the steel ball, and the outer side of the steel ball can pass through the limiting hole; The mounting plate is provided with a clearance hole directly opposite to the sleeve; A mounting hole is provided at the lower end of the quick-change connecting plate, a locking sleeve is fixedly installed in the mounting hole, a locking protrusion is protruded inwardly at the lower end of the locking sleeve, the inner diameter of the locking protrusion is larger than the outer diameter of the sleeve and smaller than the maximum diameter of the circle where the steel ball is located when it extends out of the limiting hole.

4. The storage mechanism for a quick-change welding head for robot welding according to claim 1, characterized in that: The quick-change connecting plate is fixedly mounted with a dustproof plate facing the mounting hole.

5. The storage mechanism for quick-change welding heads of robot welding according to claim 3 is characterized in that: An adjusting nut is fixed on the adjusting plate, an adjusting screw is connected to the inner thread of the adjusting nut, and a through hole is arranged on the adjusting plate directly opposite to the adjusting screw.

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