Welding positioning clamp

Abstract

The utility model belongs to the technical field of heat preservation container welding, and particularly relates to a welding positioning clamp. The fixed seat is fixedly mounted on the mounting frame; the middle die is rotationally mounted on the fixed seat; the bottom die is used for bearing a cup bottom; the fixing frame is fixedly mounted on the mounting frame, a rotating seat is rotatably mounted on the fixing frame, and the rotating seat is slidably mounted on the main shaft and is in transmission connection with the main shaft; the limiting frame is installed on the installation frame and located on one side of the bottom die. And the transmission mechanism is used for driving the middle mold and the rotating seat to rotate synchronously and is rotationally mounted on the limiting frame. The purpose is that the transmission mechanism drives the middle die and the rotating seat to rotate synchronously, the problem that the cup body is scratched due to relative movement between the cup body and the middle die is avoided, meanwhile, the transmission mechanism is limited to one side of the bottom die through the limiting frame, the transmission mechanism is prevented from rotating with the main shaft as the center, and the production efficiency is improved. And therefore, the cup welding device is relatively high in practicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding of heat preservation containers, and particularly relates to a welding positioning jig. Background Art

[0002] In heat preservation containers, generally, the inner liner and the outer shell are welded to form the cup body through a welding joint process, and then the cup body and the cup bottom are welded and connected into a whole through a bottom welding process.

[0003] At present, in the heat preservation container industry, the middle die mechanism commonly used in the bottom welding process is fixed. The cup body and the cup bottom are clamped and positioned at the welding position through the middle die, and then welded. The middle die also plays a role in stabilizing the rotation of the cup during welding.

[0004] In the existing middle die, during the rotation of the cup, in order to avoid relative rotation between the middle die and the cup body, which may cause the cup body to be scratched, generally, the middle die is rotatably installed on the support through a bearing, and the middle die is driven to rotate synchronously by the friction between the cup body and the middle die.

[0005] However, during the use and processing, once the bearing friction between the middle die and the support increases with the use time, relative movement will occur between the cup body and the middle die, thereby causing the cup body to be scratched. Content of the Utility Model

[0006] The purpose of the utility model is to provide a welding positioning jig, which drives the middle die and the rotating seat to rotate synchronously through a transmission mechanism, avoids relative movement between the cup body and the middle die, thereby preventing the problem of the cup body being scratched. At the same time, the transmission mechanism is limited to one side of the bottom die by a limiting frame, avoiding the rotation of the transmission mechanism around the main shaft, which may affect the welding of the cup by the welding gun located on one side of the bottom die, and has strong practicability.

[0007] To achieve the above technical purpose, the technical scheme adopted by the utility model is as follows:

[0008] A welding positioning jig, comprising:

[0009] An installation frame;

[0010] A fixed seat, which is fixedly installed on the installation frame;

[0011] A middle die, which is rotatably installed on the fixed seat;

[0012] A bottom die for receiving the cup bottom, which is located below the middle die, and a main shaft is installed below the bottom die;

[0013] A fixed frame, which is fixedly installed on the installation frame, and a rotating seat is rotatably installed on the fixed frame. The rotating seat is slidably installed on the main shaft and is in transmission connection with the main shaft;

[0014] A limiting frame, which is fixedly installed on the mounting frame and is located on one side of the bottom mold;

[0015] A transmission mechanism for driving the middle mold and the rotating seat to rotate synchronously, and the transmission mechanism is rotatably installed on the limiting frame.

[0016] Further defined, the transmission mechanism includes a transmission shaft, a first gear, a second gear, a third gear and a fourth gear;

[0017] The transmission shaft is vertically and rotatably installed on the limiting frame, and the first gear and the fourth gear are respectively fixedly installed at both ends of the transmission shaft;

[0018] The first gear is fixedly installed on the middle mold and meshes with the second gear;

[0019] The fourth gear is fixedly installed on the rotating seat and meshes with the third gear.

[0020] With such a structural design, through the limitation of the transmission shaft by the limiting frame and the connection of the transmission shaft to the first gear and the fourth gear, and in cooperation with the meshing of the first gear and the second gear and the meshing of the fourth gear and the third gear, the synchronous rotation of the middle mold and the rotating seat is completed. The structure is simple and the practicability is strong.

[0021] Further defined, the first gear, the second gear, the third gear and the fourth gear are all bevel gears.

[0022] With such a structural design, the power transmission is realized by the cooperation of four bevel gears and the transmission shaft. The structure is simple, the installation is convenient, and the practicability is strong.

[0023] Further defined, an installation groove is formed on the lower end surface of the rotating seat, a support bearing is arranged in the installation groove, and the outer wall of the support bearing is attached to the inner wall of the installation groove;

[0024] The fixed frame is located below the rotating seat, and the inner wall of the support bearing is attached to the side wall of the fixed frame.

[0025] With such a structural design, the rotating seat is rotatably installed through the fixed frame via the support bearing and is vertically supported on the rotating seat. In cooperation with the transmission mechanism composed of four bevel gears, the upward movement freedom of the rotating seat is limited, avoiding axial movement of the rotating seat relative to the mounting frame. The structure is simple, the installation is convenient, and the practicability is strong.

[0026] Further defined, a compression spring is sleeved on the main shaft between the rotating seat and the bottom mold;

[0027] The outer diameter dimension of the bottom mold is larger than the inner diameter dimension of the middle mold.

[0028] This structural design, through the compression spring squeezing the bottom mold, allows the bottom mold to move upward when not acted upon by external force, and rests against the bottom of the middle mold within the limit of the difference between the outer diameter of the bottom mold and the inner diameter of the middle mold, completing the preparation for welding, which is highly practical.

[0029] It is further defined that the main shaft is provided with an external spline, and the rotating seat is provided with an internal spline.

[0030] Such a structural design, through the spline cooperation, achieves the technical effect that the rotating seat is slidably installed on the main shaft and is transmission connected to the main shaft. It has a simple structure, is easy to install, and is highly practical.

[0031] The utility model adopting the above technical solution has the following advantages:

[0032] 1. The transmission mechanism drives the middle mold and the rotating seat to rotate synchronously, avoiding the relative movement between the cup body and the middle mold, which may cause the cup body to be scratched. At the same time, the transmission mechanism is limited to one side of the bottom mold by a limiting frame, which avoids the transmission mechanism rotating around the main shaft, thereby affecting the welding of the cup by the welding gun on one side of the bottom mold, which is more practical.

[0033] 2. The transmission shaft is limited by the limiting frame, and the transmission shaft is connected to the first gear and the fourth gear, and the first gear is meshed with the second gear, and the fourth gear is meshed with the third gear, so that the middle mold and the rotating seat can rotate synchronously, which has a simple structure and strong practicality;

[0034] 3. The rotating seat is installed through the fixed frame via the support bearing and the rotating seat, and a vertical support is formed for the rotating seat. The transmission mechanism composed of four bevel gears is used to limit the upward movement freedom of the rotating seat, thereby preventing the rotating seat from axially moving relative to the mounting frame. The structure is simple, the installation is convenient, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings;

[0036] Figure 1 This is a structural schematic diagram of an embodiment of a welding positioning fixture of the utility model;

[0037] Figure 2 A cross-sectional view of a welding positioning fixture embodiment of the utility model Figure 1 ;

[0038] Figure 3 A cross-sectional view of a welding positioning fixture embodiment of the utility model Figure 2 ;

[0039] The main component symbols are described as follows:

[0040] Cup body 1, cup bottom 10,

[0041] Fixed seat 2,

[0042] Middle mold 3,

[0043] Bottom mold 4, main shaft 40, compression spring 41,

[0044] Fixed frame 5, rotating seat 50, support bearing 51,

[0045] Limiting frame 6,

[0046] Drive shaft 7, first gear 71, second gear 72, third gear 73, fourth gear 74. Specific embodiments

[0047] The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that in the description of the drawings or the specification, similar or identical parts are denoted by the same reference numerals, and the implementation manners not shown or described in the drawings are those well known to those of ordinary skill in the art. In addition, the directional terms mentioned in the embodiments, such as "upper", "lower", "top", "bottom", "left", "right", "front", "rear", etc., are only references to the directions of the drawings and are not intended to limit the protection scope of the present utility model.

[0048] As Figures 1 to 3 shown, a welding positioning jig of the present utility model includes:

[0049] Mounting frame;

[0050] Fixed seat 2, which is fixedly installed on the mounting frame;

[0051] Middle mold 3, which is rotatably installed on the fixed seat 2;

[0052] Bottom mold 4 for receiving the cup bottom 10, the bottom mold 4 is located below the middle mold 3, and a main shaft 40 is installed below the bottom mold 4;

[0053] Fixed frame 5, which is fixedly installed on the mounting frame, a rotating seat 50 is rotatably installed on the fixed frame 5, and the rotating seat 50 is slidably installed on the main shaft 40 and is in transmission connection with the main shaft 40;

[0054] Limiting frame 6, which is fixedly installed on the mounting frame and is located on one side of the bottom mold 4;

[0055] A transmission mechanism for driving the middle mold 3 and the rotating seat 50 to rotate synchronously, and the transmission mechanism is rotatably installed on the limiting frame 6.

[0056] The transmission mechanism includes a drive shaft 7, a first gear 71, a second gear 72, a third gear 73 and a fourth gear 74;

[0057] The transmission shaft 7 is vertically and rotatably installed on the limiting frame 6, and the first gear 71 and the fourth gear 74 are respectively fixedly installed at both ends of the transmission shaft 7;

[0058] The first gear 71 is fixedly installed on the middle mold 3 and meshes with the second gear 72;

[0059] The fourth gear 74 is fixedly installed on the rotating seat 50 and meshes with the third gear 73.

[0060] Actually, according to the actual situation, it is also possible to, for example, on the basis of retaining the first gear 71 and the fourth gear 74, adopt the method of horizontally arranging the second gear 72 and the third gear 73, and then meshing the first gear 71, the second gear 72, the third gear 73 and the fourth gear 74 in sequence to achieve power transmission. In this embodiment, through the limitation of the transmission shaft 7 by the limiting frame 6 and the connection of the transmission shaft 7 to the first gear 71 and the fourth gear 74, combined with the meshing of the first gear 71 and the second gear 72, and the meshing of the fourth gear 74 and the third gear 73, the synchronous rotation of the middle mold 3 and the rotating seat 50 is completed. The structure is simple and the practicability is strong.

[0061] The first gear 71, the second gear 72, the third gear 73 and the fourth gear 74 are all bevel gears.

[0062] Actually, according to the actual situation, it is also possible to set the four gears as spur gears. In this embodiment, through the cooperation of the four bevel gears and the transmission shaft 7, power transmission is achieved. The structure is simple, the installation is convenient, and the practicability is strong.

[0063] An installation groove is formed on the lower end surface of the rotating seat 50, and a support bearing 51 is arranged in the installation groove. The outer wall of the support bearing 51 fits with the inner wall of the installation groove;

[0064] The fixed frame 5 is located below the rotating seat 50, and the inner wall of the support bearing 51 fits with the side wall of the fixed frame 5.

[0065] Actually, according to the actual situation, it is also possible to select the mutual cooperation of the snap ring and the boss to complete the axial limit of the rotating seat 50 on the support bearing 51 and the fixed frame 5 on the support bearing 51. In this embodiment, the fixed frame 5 is rotatably installed with the rotating seat 50 through the support bearing 51 and forms a vertical support for the rotating seat 50. Combined with the transmission mechanism composed of four bevel gears, the upward movement freedom of the rotating seat 50 is limited to prevent the rotating seat 50 from axially moving relative to the installation frame. The structure is simple, the installation is convenient, and the practicability is strong.

[0066] A compression spring 41 is sleeved between the main shaft 40, the rotating seat 50 and the bottom mold 4;

[0067] The outer diameter of the bottom mold 4 is larger than the inner diameter of the middle mold 3.

[0068] The bottom die 4 is extruded by the compression spring 41, so that when the bottom die 4 is not under external force, it moves upward and abuts against the bottom of the middle die 3 under the limitation of the difference between the outer diameter of the bottom die 4 and the inner diameter of the middle die 3, completing the preparatory work for welding, with strong practicability.

[0069] External splines are provided on the main shaft 40, and internal splines are provided on the rotating seat 50.

[0070] In fact, according to the actual situation, such as setting the cross-section of the main shaft 40 as a rectangle, and then opening a rectangular hole in the center of the rotating seat 50, and sleeving the rectangular shaft with the rectangular hole to achieve sliding and transmission connection. In this embodiment, through the spline fit, the technical effect that the rotating seat 50 is slidably mounted on the main shaft 40 and is in transmission connection with the main shaft 40 is realized, with a simple structure, convenient installation and strong practicability.

[0071] In this embodiment, before welding, the bottom die 4 moves upward under the action of the compression spring 41 and abuts against the lower end face of the middle die 3;

[0072] During welding, the cup bottom 10 is placed into the middle die 3. The cup bottom 10 slides down along the inner wall of the middle die 3 to the bottom of the middle die 3 under the action of gravity and is received by the bottom die 4. Then the cup body 1 is placed in the middle die 3 to form a closed mold with the cup bottom 10. The hydraulic mechanism presses the cup body 1 downward above the cup body 1, overcomes the prestress of the compression spring 41, drives the cup and the bottom die 4 to move downward, and further exposes the joint of the cup body 1 and the cup bottom 10 outside the middle die 3;

[0073] Then the motor drives the bottom die 4 to rotate through the main shaft 40, and cooperates with the welding gun 20 to perform circumferential welding on the joint of the cup body 1 and the cup bottom 10;

[0074] During the rotation of the bottom die 4, the rotation of the bottom die 4 transmits power through the transmission mechanism, and then drives the middle die 3 to rotate synchronously.

[0075] The above has introduced in detail a welding positioning fixture provided by the present utility model. The description of the specific embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A welding positioning fixture, characterized in that: Comprising: Mounting bracket; Fixed seat (2), which is fixedly installed on the mounting bracket; Middle mold (3), which is rotatably installed on the fixed seat (2); Bottom mold (4) for receiving the bottom of the cup (10), the bottom mold (4) is located below the middle mold (3), and a main shaft (40) is installed below the bottom mold (4); Fixed frame (5), which is fixedly installed on the mounting bracket, a rotating seat (50) is rotatably installed on the fixed frame (5), and the rotating seat (50) is slidably installed on the main shaft (40) and is in transmission connection with the main shaft (40); Limiting frame (6), which is fixedly installed on the mounting bracket and is located on one side of the bottom mold (4); A transmission mechanism for driving the middle mold (3) and the rotating seat (50) to rotate synchronously, and the transmission mechanism is rotatably installed on the limiting frame (6).

2. The welding positioning fixture according to claim 1, characterized in that: The transmission mechanism includes a transmission shaft (7), a first gear (71), a second gear (72), a third gear (73) and a fourth gear (74); The transmission shaft (7) is vertically rotatably installed on the limiting frame (6), and the first gear (71) and the fourth gear (74) are respectively fixedly installed at both ends of the transmission shaft (7); The first gear (71) is fixedly installed on the middle mold (3) and meshes with the second gear (72); The fourth gear (74) is fixedly installed on the rotating seat (50) and meshes with the third gear (73).

3. A welding positioning jig according to claim 2, characterized in that: The first gear (71), the second gear (72), the third gear (73) and the fourth gear (74) are all bevel gears.

4. A welding positioning fixture according to claim 3, characterized in that: An installation groove is formed on the lower end surface of the rotating seat (50), a support bearing (51) is arranged in the installation groove, and the outer wall of the support bearing (51) fits with the inner wall of the installation groove; The fixed frame (5) is located below the rotating seat (50), and the inner wall of the support bearing (51) fits with the side wall of the fixed frame (5).

5. The welding positioning fixture according to claim 1, characterized in that: A compression spring (41) is sleeved on the main shaft (40) between the rotating seat (50) and the bottom mold (4); The outer diameter of the bottom mold (4) is larger than the inner diameter of the middle mold (3).

6. The welding positioning fixture according to claim 1, wherein: External splines are provided on the main shaft (40), and internal splines are provided on the rotating seat (50).

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