A device for spraying glue on a part casing

Abstract

The present invention discloses a device for spraying glue on a part casing, which includes a workbench assembly, a front-back adjustment assembly, a left-right adjustment assembly, a speed reduction mechanism and a roller assembly stacked in sequence from bottom to top. The front-back adjustment assembly drives the left-right adjustment assembly to adapt to part casings of different heights through two sections of threads with opposite helix directions on the front-back adjustment screw, while the left-right adjustment assembly drives the speed reduction mechanism and the roller assembly to adapt to part casings of different outer diameters through two sections of threads with opposite helix directions on the left adjustment screw and the right adjustment screw. The adjustment structure of the present invention is simple. It can not only drive the part casing to rotate uniformly around its own axis, but also achieve multiple functions with one machine. Moreover, in cooperation with a manipulator, it can complete uniform glue spraying or painting on the inner walls of part casings of different shapes, combining both painting efficiency and quality.

Description

Technical Field

[0001] The present invention belongs to the technical field of aero-engine manufacturing, and particularly relates to a device for spraying glue on a part casing. Background Art

[0002] As Figures 1 to 3 shown, the part casing is in a circular ring shape, a conical shape, and a circular structure with a curved cross-section, and the shape of the wall thickness of the circular ring is various. At the same time, in the manufacturing process of the part casing, there is a process that requires uniform spraying of glue on the inner wall of the circular ring of the part casing: the spraying thickness is 0.2 - 0.4 mm. It is not only inefficient to operate manually, but more importantly, it is very difficult to achieve the process requirements of the spraying effect. Therefore, it is necessary to be realized by an automatic spraying device (such as a mechanical spraying arm). However, the key step in realizing automatic spraying is to make the part casings of various shapes rotate at a constant speed. Since there are many shapes of part casings, if a set of driving devices for rotating at a constant speed is designed for each type of part casing, not only the manufacturing cost is very high, but also the management and storage of multiple sets of driving devices are a big problem. At the same time, the time cost and debugging cost during the switching of different driving devices also need to be considered. Therefore, designing a set of adjustable spraying devices suitable for part casings of various shapes is the optimal way. Summary of the Invention

[0003] The present invention aims to provide a device for spraying glue on a part casing, so that the part casing can rotate at a constant speed, and at the same time, cooperate with the "manipulator" to reciprocate linearly back and forth at the inner wall of the circular ring to complete the spraying operation. When the rate matching of the constant rotation of the spraying device and the linear reciprocating motion back and forth of the "manipulator" is adjusted, the process requirements of uniform spraying can be achieved.

[0004] The technical solution of the present invention is as follows:

[0005] A device for spraying glue on a part casing includes a workbench assembly, a front-back adjustment assembly, a left-right adjustment assembly, a speed reduction mechanism, and a roller assembly;

[0006] The workbench assembly mainly consists of a workbench, a first guiding track, and a first positioning block. Two first guiding tracks are arranged in parallel and at intervals on the upper surface of the workbench. Two first positioning blocks are fixed on the upper surface of the workbench and are located between the two first guiding tracks. Through holes are opened on the first positioning blocks, and the connection line of the through holes on the two first positioning blocks is parallel to the first guiding track;

[0007] The front-back adjustment component mainly consists of two second guiding rails, two channel steels, four second positioning blocks, a front-back adjustment screw rod, and two first positioning pins. The two channel steels are each slidably connected to a first guiding rail and are located between two first positioning blocks. On the upper end surface of each channel steel, there is a second guiding rail and two second positioning blocks. Through holes are formed in the second positioning blocks, and the connecting line of the through holes on the two second positioning blocks is parallel to the second guiding rail. The surface of the front-back adjustment screw rod has left-handed external threads and right-handed external threads with opposite helix directions. The front-back adjustment screw rod passes through the through holes on the two first positioning blocks and the two channel steels, and is connected to one of the channel steels through the left-handed thread and to the other channel steel through the right-handed thread. Two first positioning pins are inserted on the front-back adjustment screw rod, and the two first positioning blocks are located between the two first positioning pins;

[0008] The left-right adjustment component mainly consists of a reducer base, three roller bases, four second positioning pins, a left adjustment screw rod, and a right adjustment screw rod. The surfaces of the left adjustment screw rod and the right adjustment screw rod both have left-handed external threads and right-handed external threads with opposite helix directions. The left adjustment screw rod passes through the through holes of the two second positioning blocks. Two second positioning pins are inserted on the left adjustment screw rod, and the two second positioning blocks are located between the two second positioning pins. A roller base is connected to the left adjustment screw rod through the right-handed thread and the reducer base through the left-handed thread. The left adjustment screw rod passes through the through holes of the two second positioning blocks. The right adjustment screw rod passes through the through holes of the two second positioning blocks. Two second positioning pins are inserted on the right adjustment screw rod, and the two second positioning blocks are located between the two second positioning pins. The right adjustment screw rod is connected to one roller base through the right-handed thread and to the other roller base through the left-handed thread. The reducer base, the three roller bases are slidably connected to the second guiding rail;

[0009] The reduction mechanism is installed on the reducer base;

[0010] The four roller components are respectively installed on the three roller bases and a reducer base, and the roller component located on the reducer base is connected to the reduction mechanism.

[0011] As a solution, through holes are formed in the channel steel, and a left-handed nut is coaxially fixed corresponding to the through hole in the groove of one of the channel steels, and a right-handed nut is coaxially fixed corresponding to the through hole in the groove of the other channel steel. The front-back adjustment screw rod is connected to one of the channel steels through the through hole and the left-handed nut by left-handed thread, and is connected to the other channel steel through the through hole and the right-handed nut by right-handed thread.

[0012] As another solution, one of the channel steels is formed by welding two shorter channel steels through a left-handed nut, and the axis of the left-handed nut is perpendicular to the two shorter channel steels; the other channel steel is formed by welding two shorter channel steels through a right-handed nut, and the axis of the right-handed nut is perpendicular to the two shorter channel steels.

[0013] Furthermore, one end of the front and rear adjusting screws, the left adjusting screw and the right adjusting screw is respectively connected to a rotating handle.

[0014] Furthermore, the channel steel is provided with a guide groove and is slidably connected to the first guide rail through the guide groove. The reducer base and the roller base are also provided with guide grooves and are slidably connected to the second guide rail through the guide grooves.

[0015] As an option, the length of the workbench is equal to 3 / 2 of the maximum diameter of the parts casing, and the width of the workbench is equal to 4 / 3 of the height of the parts casing.

[0016] Compared with the prior art, the device for spraying glue on the parts casing of the present invention has the following characteristics:

[0017] (1) The glue spraying device of the present invention can meet the glue spraying requirements of large-sized parts casings (diameter Φ2500 to Φ300).

[0018] (2) When the glue spray nozzle on the robot is replaced with a paint spray nozzle, it can meet the requirements of painting the inner wall of the parts, and one machine can be used for multiple purposes.

[0019] (3) For parts of different shapes, such as rings, cones, curves, etc., the relative positions of the four rollers can be quickly and conveniently adjusted by rotating the corresponding "rotating handle" to achieve the requirements of part spraying.

[0020] (4) The three components (workbench component, front and rear adjustment component, left and right adjustment component) adopt an upper and lower stacking structure, which is easy to assemble.

[0021] (5) Only one of the four roller assemblies is driven through the reduction mechanism, and the remaining roller assemblies serve as followers, which is highly efficient and easy to adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figures 1 to 3 There are three different shapes of parts receivers;

[0023] Figure 4 It is a three-dimensional diagram of the device for spraying glue on the parts casing of the present invention;

[0024] Figure 5 The ring-shaped part of the casing is installed on Figure 4 Schematic diagram of the status of the device for spraying glue on the middle part casing;

[0025] Figure 6 is a schematic diagram of the state where the conical part casing is installed on Figure 4 the device for spraying glue on the part casing;

[0026] Figure 7 is a schematic diagram of the workbench assembly;

[0027] Figure 8 is a schematic diagram of the front - and - rear adjustment assembly;

[0028] Figure 9 is a schematic diagram of the left - and - right adjustment assembly

[0029] In the figure, 1 - workbench assembly, 2 - front - and - rear adjustment assembly, 3 - left - and - right adjustment assembly, 4 - reduction mechanism, 5 - roller assembly, 6 - rotating handle, 7 - guiding groove, 8 - manipulator, 11 - workbench, 12 - first guiding track, 13 - first positioning block, 21 - second guiding track, 22 - channel steel, 23 - left - hand nut, 24 - right - hand nut, 25 - second positioning block, 26 - front - and - rear adjustment screw, 27 - first positioning pin, 31 - reduction gearbox base, 32 - roller base, 33 - second positioning pin, 34 - left adjustment screw, 35 - right adjustment screw. Detailed implementation manners

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. However, it should not be understood that the scope of the subject matter of the present invention is limited to the following embodiments. Without departing from the above technical idea of the present invention, all modifications, substitutions, and changes made according to ordinary technical knowledge and customary means in the art are included in the scope of the present invention.

[0031] In order to achieve uniform glue spraying on the inner walls of part casings with different shapes, the present invention designs a device that can adjust the fulcrum positions in the front - and - rear and left - and - right directions and has a slow - speed driving function according to the outer - shape characteristics of the part casing. Its three - dimensional structure is as Figure 4 shown.

[0032] Figure 5 And Figure 6 are the glue - spraying operation diagrams for two different - shaped part casings. The key point in the assembly of these two typical part casings is that the center lines of the rings and cones of the parts must be parallel to the front - and - rear center line of the tabletop of the workbench 11 so that the parts can rotate uniformly without deviation.

[0033] The device for spraying glue on the part casing is as Figure 4 shown, and includes a workbench assembly 1, a front - and - rear adjustment assembly 2, a left - and - right adjustment assembly 3, a reduction mechanism 4, and a roller assembly 5.

[0034] The workbench assembly 1 is as Figure 7As shown in the figure, it consists of a workbench 11, two first guiding rails 12, and two first positioning blocks 13. The function of the first guiding rail 12 is to guide the adjustment component 2 without deviation when adjusting it before and after. The function of the first positioning block 13 is to position the position of the front and rear adjustment screw 26.

[0035] The size of the workbench component 1 is determined according to the size of the part casing. The size design principle is: the maximum part diameter of the part casing = two-thirds of the length of the workbench component 1; the maximum part height of the part casing = three-fourths of the width of the workbench 11.

[0036] The front and rear adjustment component 2 is as Figure 8 shown, and it consists of four second guiding rails 21, four channel steels 22, a left-handed nut 23, a right-handed nut 24, four second positioning blocks 25, a front and rear adjustment screw 26, two first positioning pins 27, and a rotating handle 6.

[0037] For the front and rear adjustment component 2, the thread parts on the front and rear surfaces of the front and rear adjustment screw 26 are designed as left-handed threads and right-handed threads. Therefore, when rotating the rotating handle 6 clockwise or counterclockwise, through the left-handed nut 23 and the right-handed nut 24, the associated components will move towards or away from each other. If the wall thickness of the channel steel 22 is sufficient to machine threaded holes with appropriate lengths, then the threaded holes can also be directly machined on the channel steel 22, thereby canceling the method of welding the left-handed nut 23 and the right-handed nut 24. If the wall thickness of the channel steel 22 is insufficient, then a method of opening through holes on the surface of the channel steel 22 and welding nuts in the grooves of the channel steel 22 corresponding to the through holes is adopted.

[0038] The left and right adjustment component 3 is as Figure 9 shown, and it consists of two left-handed nuts 23, two right-handed nuts 24, a reducer base 31, three roller bases 32, four second positioning pins 33, a left adjustment screw 34, a right adjustment screw 35, and two rotating handles 6.

[0039] The working principle of the left and right adjustment component 3 is the same as that of the front and rear adjustment component 2. Both achieve relative or reverse movement through the left adjustment screw 34 or the right adjustment screw 35 with two sections of threads with opposite helix directions on the surface and the left-handed nuts 23 and the right-handed nuts 24 on the reducer base 31 and the roller base 32. Similarly, if the thickness of the reducer base 31 and the roller base 32 is sufficient to machine threaded holes, then they are directly machined on their structures. If the thickness is small and sufficient-depth threaded holes cannot be machined, then a method of welding nuts is adopted to achieve threaded holes with effective lengths to cooperate with the left adjustment screw 34 or the right adjustment screw 35.

[0040] The first positioning block 13 and the second positioning block 25 are provided with through holes for inserting the front and rear adjusting screw 26, the left adjusting screw 34, and the right adjusting screw 35. The first positioning pin 27 and the second positioning pin 33 are used to limit the moving positions of the front and rear adjusting screw 26, the left adjusting screw 34, and the right adjusting screw 35 relative to the first positioning block 13 and the second positioning block 25.

[0041] The deceleration mechanism 4 and the roller assembly 5 are composed of purchased components.

[0042] When the glue spraying head used in the corresponding manipulator 8 ( Figure 5 and Figure 6 in) of the device of the present invention is replaced with a paint spraying head, and the material glue is replaced with paint of the required color, it can achieve both glue spraying and paint spraying, and one machine can be used for multiple purposes.

[0043] The device for spraying glue on the part casing is composed of five functional parts: the workbench assembly 1, the front and rear adjustment assembly 2, the left and right adjustment assembly 3, the deceleration mechanism 4, and the roller assembly 5.

[0044] The structures, assemblies, and operating principles of each part are as follows:

[0045] 1. The workbench assembly 1, as Figure 7 shown, its function is to provide a basic platform with a suitable height and meeting the requirements of human height for the entire device, and its dimensions are 1000X800X900.

[0046] Two parallel first guiding rails 12 are installed on the tabletop of the workbench 11, with a distance of 590 mm between them. The cross-sectional dimensions of the first guiding rails 12 correspond to the dimensions of the guiding grooves 7 in the front and rear adjustment assembly 2, and the clearance dimension between the two is 1.5 mm.

[0047] The height dimension of the central hole of the first positioning block 13 is the same as the center line of the front and rear adjusting screw 26 in the front and rear adjustment assembly 2.

[0048] The workbench 11, the first guiding rails 12, and the first positioning block 13 are connected by welding, with a simple and firm structure.

[0049] 2. The front and rear adjustment assembly 2, as Figure 8 shown. The left-handed nut 23 (right-handed nut 24) uses a channel steel 22 as the material on both sides to form a straight line. The left-handed nut 23 is located in the middle of the two channel steels 22, forming the lower adjustment platform of the left and right adjustment assembly 3. Such effects include ① the function is to reduce weight, ② reduce the manufacturing cost, and the length of the channel steel 22 is 360 mm X 4 pieces.

[0050] The nuts are divided into a left-handed nut 23 and a right-handed nut 24, and the height of their center lines is the same as the center line of the first positioning block 13 in (the workbench assembly 1).

[0051] The installation position of the first positioning block 13 is at the upper middle part of the nuts (left-handed nut 23 and right-handed nut 24) and the upper part of one end of the channel steel 22. The height of the central hole on the first positioning block 13 is the same as the center lines of the left adjusting screw 34 and the right adjusting screw 35.

[0052] The channel steel 22, the nuts, and the first positioning block 13 are connected by welding.

[0053] Assembly sequence of the device for spraying glue on the part casing: The front and rear adjusting screws 26 respectively pass through the left-handed nut 23, the right-handed nut 24, the front and rear first positioning blocks 13. The guiding groove 7 is naturally assembled onto the first guiding track 12. Then, the front and rear first positioning pins 27 are positioned and clamped, and the rotating handle 6 is positioned and assembled.

[0054] Working principle of the device for spraying glue on the part casing: Rotate the rotating handle 6 clockwise or counterclockwise. Under the linkage of the left and right threads, its front and rear adjusting components 2 will move linearly towards or away from each other, achieving the purpose of adjusting the front and rear distances to meet the assembly requirements of parts with different heights.

[0055] 3. The left and right adjusting component 3, as Figure 9 shown. The nuts are also divided into a left-handed nut 23 and a right-handed nut 24. The roller base 32 and the reducer base 31 are welded to them, and both adopt the welding method. The center lines of the four nuts are at the same height as the center lines of the openings of the second positioning block 25 in the front and rear adjusting component 2.

[0056] The assembly sequence and working principle of the left and right adjusting component 3 are the same as those of the front and rear adjusting component 2. Specifically, the left adjusting screw 34 and the right adjusting screw 35 respectively pass through the second positioning block 25, the roller base 32, and the reducer base 31, and then are clamped by the second positioning pin 33. The guiding grooves 7 under the roller base 32 and the reducer base 31 are assembled onto the second guiding track 21.

[0057] 4. The reduction mechanism 4 and the roller assembly 5 are off-the-shelf components. They are respectively connected to the reducer base 31 and the roller base 32 by bolt connection, which is convenient for maintenance and replacement.

[0058] The content not described in detail in the specification of the present invention belongs to the prior art well-known to those skilled in the art. Although the illustrative specific embodiments of the present invention are described above to facilitate the understanding of the present invention by those skilled in the art, it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions created using the concept of the present invention are within the scope of protection.

Claims

1. A device for spraying glue on a part casing, characterized in that: It includes a workbench assembly (1), a front-back adjustment assembly (2), a left-right adjustment assembly (3), a speed reduction mechanism (4), and a roller assembly (5); The workbench assembly (1) mainly consists of a workbench (11), a first guiding track (12), and a first positioning block (13). Two first guiding tracks (12) are arranged in parallel and at intervals on the upper surface of the workbench (11). Two first positioning blocks (13) are fixed on the upper surface of the workbench (11) and are located between the two first guiding tracks (12). Through holes are formed in the first positioning blocks (13), and the connection line of the through holes on the two first positioning blocks (13) is parallel to the first guiding track (12); The front-back adjustment assembly (2) mainly consists of two second guiding tracks (21), two channel steels (22), four second positioning blocks (25), a front-back adjustment screw rod (26), and two first positioning pins (27). The two channel steels (22) are each slidably connected to a first guiding track (12) and are located between the two first positioning blocks (13). A second guiding track (21) and two second positioning blocks (25) are arranged on the upper end surface of each channel steel (22). Through holes are formed in the second positioning blocks (25), and the connection line of the through holes on the two second positioning blocks (25) is parallel to the second guiding track (21). The surface of the front-back adjustment screw rod (26) has left-handed external threads and right-handed external threads with opposite helix directions. The front-back adjustment screw rod (26) passes through the through holes on the two first positioning blocks (13) and the two channel steels (22), and is connected to one of the channel steels (22) through the left-handed thread and is connected to the other channel steel (22) through the right-handed thread at the same time. Two first positioning pins (27) are inserted on the front-back adjustment screw rod (26), and the two first positioning blocks (13) are located between the two first positioning pins (27); The left and right adjustment assembly (3) mainly consists of a reducer base (31), three roller bases (32), four second positioning pins (33), a left adjustment screw rod (34) and a right adjustment screw rod (35). The surfaces of the left adjustment screw rod (34) and the right adjustment screw rod (35) are both provided with left-handed external threads and right-handed external threads with opposite helix directions. The left adjustment screw rod (34) passes through the through holes of two second positioning blocks (25). Two second positioning pins (33) are inserted on the left adjustment screw rod (34), and the two second positioning blocks (25) are located between the two second positioning pins (33). A roller base (32) is connected to the left adjustment screw rod (34) through a right-handed thread, and at the same time, the reducer base (31) is connected through a left-handed thread. The left adjustment screw rod (34) passes through the through holes of two second positioning blocks (25). The right adjustment screw rod (35) passes through the through holes of two second positioning blocks (25). Two second positioning pins (33) are inserted on the right adjustment screw rod (35), and the two second positioning blocks (25) are located between the two second positioning pins (33). The right adjustment screw rod (35) is connected to a roller base (32) through a right-handed thread and at the same time is connected to another roller base (32) through a left-handed thread. The reducer base (31), the three roller bases (32) are slidably connected to the second guide rail (21); The speed reduction mechanism (4) is installed on the reducer base (31); The four roller assemblies (5) are respectively installed on the three roller bases (32) and a reducer base (31), and the roller assembly (5) located on the reducer base (31) is connected to the speed reduction mechanism (4).

2. The device for spraying glue on a part casing according to claim 1, characterized in that: Through holes are formed in the channel steel (22), and a left-handed nut (23) is coaxially fixed at a position corresponding to the through hole in the groove of one channel steel (22), and a right-handed nut (24) is coaxially fixed at a position corresponding to the through hole in the groove of the other channel steel (22). The front and back adjustment screw rod (26) is connected to one channel steel (22) through a left-handed thread through the through hole and the left-handed nut (23), and is connected to the other channel steel (22) through a right-handed thread through the through hole and the right-handed nut (24).

3. The device for spraying glue on a part casing according to claim 1, characterized in that: One of the channel steels (22) is formed by welding two shorter channel steels with a left-handed nut. The axis of the left-handed nut is perpendicular to the two shorter channel steels. The other channel steel (22) is formed by welding two shorter channel steels with a right-handed nut. The axis of the right-handed nut is perpendicular to the two shorter channel steels.

4. A device for spraying glue on a part casing according to claim 1, characterized in that: One ends of the front and back adjustment screw rod (26), the left adjustment screw rod (34) and the right adjustment screw rod (35) are respectively connected to a rotary handle (6).

5. The device for spraying glue on a part casing according to claim 1, characterized in that: Guide grooves (7) are formed in the channel steel (22), and the channel steel (22) is slidably connected to the first guide rail (12) through the guide grooves (7). Guide grooves (7) are also formed in the reducer base (31) and the roller bases (32), and the reducer base (31) and the roller bases (32) are slidably connected to the second guide rail (21) through the guide grooves (7).

6. The device for spraying glue on a part casing according to claim 1, characterized in that: The length of the workbench (11) is equal to 3 / 2 of the maximum diameter of the part casing, and the width of the workbench (11) is equal to 4 / 3 of the height of the part casing.

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