CN210046147U - Three-shaft spot welding machine head - Google Patents
Three-shaft spot welding machine head Download PDFInfo
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- CN210046147U CN210046147U CN201922461264.8U CN201922461264U CN210046147U CN 210046147 U CN210046147 U CN 210046147U CN 201922461264 U CN201922461264 U CN 201922461264U CN 210046147 U CN210046147 U CN 210046147U
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Abstract
The utility model relates to the technical field of spot welding machines, in particular to a three-shaft spot welding machine head, which comprises a base for connecting external driving force, a main shaft for installing a welding head, an intermediate shaft fixed on the base and provided with a central through hole, a guide shaft fixed on the base, a transmission connecting piece and a pressure sensor, wherein the three-shaft spot welding machine head directly drives the spot welding machine head to displace through the external driving force, can transmit welding pressure to the pressure sensor in the process of applying the welding pressure to a workpiece when the spot welding machine head integrally moves down, thereby carrying out power-on welding according to the welding pressure detected by the pressure sensor without arranging a driving mechanism on the base, has simple and compact integral structure, low failure rate and low cost, skillfully sets the transmission connecting piece into the middle part to be contacted with a first spring, and ensures that the transmission connecting piece is not easy to deviate when transmitting larger welding pressure, the method is suitable for the working condition with larger welding pressure.
Description
Technical Field
The utility model belongs to the technical field of spot welder technique and specifically relates to a three-axis type spot welding head.
Background
Welding pressure between a welding head and a workpiece of a spot welding machine during welding is one of important factors influencing welding quality, the welding pressure of the existing spot welding machine is generally provided by a driving mechanism which is independently configured on the spot welding machine head, and as for the spot welding machine head of an accurate electrode force pressurization system disclosed in the Chinese patent with the application number of CN201610512280.3, the spot welding machine head provides welding pressure by a welding acting force providing device which is arranged on the spot welding machine head, obviously, the spot welding machine head has the defects of complex structure, high failure rate and high manufacturing cost due to the existence of the welding acting force providing device, and meanwhile, the spot welding machine head cannot be suitable for automatic welding equipment.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: in order to solve the problems that the spot welding machine head in the prior art is generally provided with welding pressure by using an upper driving mechanism, so that the spot welding machine head is complicated in structure, high in failure rate and high in manufacturing cost due to the fact that the driving mechanism is arranged, a three-shaft spot welding machine head is provided.
The utility model provides a technical scheme that its technical problem adopted is: a three-shaft spot welding machine head comprises a base used for connecting external driving force, a main shaft used for installing a welding head, an intermediate shaft fixed on the base and provided with a central through hole, a guide shaft fixed on the base, a transmission connecting piece and a pressure sensor, wherein the main shaft is arranged on the base in a sliding mode along the axis direction of the main shaft, a radial hole communicated with the central through hole penetrates through the peripheral surface of the intermediate shaft, one end of the transmission connecting piece is fixedly connected with the main shaft, and the other end of the transmission connecting piece is connected with the guide shaft in a sliding mode;
the two sides of the transmission connecting piece are respectively provided with a first spring and a second spring, the pressure sensor is arranged above the first spring, the upper end of the first spring is abutted to the pressure sensor, the lower end of the first spring is in delivery connection with the middle part of the upper surface of the transmission connecting piece, the upper end of the second spring is abutted to the middle part of the lower surface of the transmission connecting piece, the lower end of the second spring is abutted to the base relatively, and the first spring and the second spring are both located in the central through hole.
The base can be directly arranged on a driving shaft of automatic welding equipment, the base is driven by the automatic welding equipment to move up and down, when welding is carried out, the automatic equipment is utilized to drive the base to integrally move down to a welding head on a main shaft to be contacted with a workpiece, certain welding pressure is formed between the welding head and the workpiece, after the welding head fixed on the main shaft is contacted with the workpiece, the main shaft overcomes the elastic force of a first spring through a transmission connecting piece to move upwards, the first spring is tightly pressed on a pressure sensor, the pressure sensor can detect the pressure applied to the main shaft, and when the pressure reaches a preset value, a welding power supply is switched on, so that the welding head can carry out welding under the preset welding pressure;
the first spring and the second spring are arranged on two sides of the transmission connecting piece respectively, and can support the transmission connecting piece by the second spring when the first spring is compressed by the transmission connecting piece, so that the fluctuation of the main shaft is reduced, the welding stability is improved, the first spring is arranged in the middle of the transmission connecting piece, the force transmission of the transmission connecting piece between the main shaft and the first spring is more stable, the transmission connecting piece can transmit a part of lateral load to the guide shaft, the transmission connecting piece is prevented from bending deformation, and the transmission connecting piece is suitable for the working condition with higher welding pressure;
in addition, the arrangement of the guide shaft can also prevent the main shaft from rotating, and the main shaft can only be ensured to move along the axial direction of the main shaft by utilizing the matching of the transmission connecting piece and the guide shaft;
simultaneously, first spring and second spring are established in the central through-hole of jackshaft to the central through-hole that utilizes the jackshaft can form certain supporting effect to first spring and second spring, prevents that first spring and second spring from taking place great skew to side.
In order to prevent the transmission connecting piece from being interfered by other factors when moving up and down to cause inaccurate pressure measured by the pressure sensor, furthermore, two rollers are rotatably arranged at one end of the transmission connecting piece matched with the main shaft, and are respectively positioned at two sides of the guide shaft and are both contacted with the main shaft; therefore, the transmission connecting piece is contacted with the guide shaft through the roller, the friction force between the transmission connecting piece and the guide shaft can be greatly reduced, the flexibility of the transmission connecting piece moving along with the main shaft is improved, and the accuracy of the pressure sensor for detecting the welding pressure between the welding head and the workpiece is improved.
In order to improve the flexibility of the movement of the main shaft, further, a linear bearing is arranged between the main shaft and the base; by means of the arrangement of the linear bearing, friction force borne by the main shaft during movement can be reduced, so that the flexibility of movement of the main shaft is improved, and the accuracy of detection of welding pressure between the welding head and the workpiece by the pressure sensor is improved.
Furthermore, an upper cover is arranged at the top end of the base, the pressure sensor is fixedly installed in the upper cover, and the upper cover is in threaded connection with the base; the setting of upper cover can be convenient for install first spring, and through rotating the upper cover, the elasticity of adjustable first spring to can be convenient for adjust first spring to the pressure of transmission connecting piece, realize the fine setting to transmission connecting piece initial position simultaneously.
Further, the bottom of base is equipped with the lower cover, lower cover and base threaded connection, the lower extreme butt of second spring is in the inboard of lower cover, and the setting of lower cover can be convenient for install the second spring, and through rotating the lower cover, can adjust the elasticity of second spring to can be convenient for adjust the holding power of second spring to the transmission connecting piece, realize the fine setting to transmission connecting piece initial position simultaneously.
The utility model has the advantages that: the utility model discloses a triaxial formula spot welder head carries out the displacement through this spot welder head of external drive power direct drive, and can move down the in-process of applying welding pressure to the work piece wholly at this spot welder head, transmit welding pressure to pressure sensor, thereby can carry out the circular telegram welding according to the welding pressure that pressure sensor detected, need not set up actuating mechanism on the base, overall structure is simple, and is compact, the fault rate is low, and is with low costs, and ingenious setting transmission connecting piece to middle part and first spring contact, make transmission connecting piece difficult skew when transmitting great welding pressure, it is applicable in the great operating mode of welding pressure.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a three-dimensional schematic view of a three-axis spot welder head according to the present invention;
FIG. 2 is a schematic front view of a three-axis spot welding head according to the present invention;
fig. 3 is a schematic cross-sectional view of the triple-axis spot welder head of the present invention.
In the figure: 1. the device comprises a base, 2, a main shaft, 3, an intermediate shaft, 3-1, a central through hole, 3-2, radial holes, 4, a guide shaft, 5, a transmission connecting piece, 6, a pressure sensor, 7, a first spring, 8, a second spring, 9, a roller, 10, a linear bearing, 11, an upper cover, 12 and a lower cover.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic drawings, which illustrate the basic structure of the invention only in a schematic way, and thus show only the components that are relevant to the invention, and the directions and references (e.g., upper, lower, left, right, etc.) may be used only to help describe the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.
Example 1
As shown in fig. 1-3, a three-axis spot welding machine head comprises a base 1 for connecting an external driving force, a main shaft 2 for mounting a welding head, an intermediate shaft 3 fixed on the base 1 and provided with a central through hole 3-1, a guide shaft 4 fixed on the base 1, a transmission connecting piece 5 and a pressure sensor 6, wherein the main shaft 2 is arranged on the base 1 in a sliding manner along the axis direction thereof, a radial hole 3-2 communicated with the central through hole 3-1 penetrates through the peripheral surface of the intermediate shaft 3, one end of the transmission connecting piece 5 is fixedly connected with the main shaft 2, and the other end of the transmission connecting piece is connected with the guide shaft 4 in a sliding manner;
the two sides of the transmission connecting piece 5 are respectively provided with a first spring 7 and a second spring 8, the pressure sensor 6 is arranged above the first spring 7, the upper end of the first spring 7 is abutted against the pressure sensor 6, the lower end of the first spring 7 is connected to the middle part of the upper surface of the transmission connecting piece 5 in a delivering manner, the upper end of the second spring 8 is abutted against the middle part of the lower surface of the transmission connecting piece 5, the lower end of the second spring 8 is abutted against the base 1 relatively, and the first spring 7 and the second spring 8 are both positioned in the central through hole 3-1.
One end of the transmission connecting piece 5, which is matched with the main shaft 2, is rotatably provided with two rollers 9, and the two rollers 9 are respectively positioned at two sides of the guide shaft 4 and are both contacted with the main shaft 2; therefore, the transmission connecting piece 5 is in contact with the guide shaft 4 through the roller 9, the friction force between the transmission connecting piece 5 and the guide shaft 4 can be greatly reduced, the flexibility of the transmission connecting piece 5 moving along with the main shaft 2 is improved, and the accuracy of the pressure sensor 6 in detecting the welding pressure between the welding head and the workpiece is improved.
A linear bearing 10 is arranged between the main shaft 2 and the base 1; by means of the arrangement of the linear bearing 10, friction force borne by the main shaft 2 during movement can be reduced, so that the flexibility of movement of the main shaft 2 is improved, and the accuracy of detection of welding pressure between a welding head and a workpiece by the pressure sensor 6 is improved.
An upper cover 11 is arranged at the top end of the base 1, the pressure sensor 6 is fixedly installed in the upper cover 11, and the upper cover 11 is in threaded connection with the base 1; the first spring 7 of installation can be convenient for to the setting of upper cover 11, and through rotating upper cover 11, the elasticity of adjustable first spring 7 to can be convenient for adjust the pressure of first spring 7 to transmission connecting piece 5, the realization is to the fine setting of transmission connecting piece 5 initial position simultaneously.
The bottom of base 1 is equipped with lower cover 12, lower cover 12 and 1 threaded connection of base, the lower extreme butt of second spring 8 is in the inboard of lower cover 12, and the setting of lower cover 12 can be convenient for install second spring 8, and through rotating lower cover 12, can adjust the elasticity of second spring 8 to can be convenient for adjust the holding power of second spring 8 to transmission and connection spare 5, the realization is to the fine setting of transmission and connection spare 5 initial position simultaneously.
The working principle of the three-axis spot welding head of the embodiment is as follows:
when the three-shaft spot welding machine head is used, the base 1 of the three-shaft spot welding machine head is fixed on a driving mechanism of automatic welding equipment, such as a lead screw mechanism or an air cylinder, then the driving mechanism of the automatic welding equipment drives the base 1 to move up and down, and the base 1 integrally moves down to a welding head on the main shaft 2 to be contacted with a workpiece, after the welding head is contacted with the workpiece, a certain welding pressure is formed between the welding head and the workpiece along with the approach of the base 1 to the workpiece, the main shaft 2 drives the transmission connecting piece 5 to synchronously move upwards, the first spring 7 is compressed by the transmission connecting piece 5 and transmits the welding pressure to the pressure sensor 6, the second spring 8 supports the transmission connecting piece 5, and when the pressure sensor 6 detects that the pressure applied to the transmission connecting piece reaches a preset value, a welding power supply is switched on, so that the welding head is welded under the preset welding pressure;
the first spring 7 and the second spring 8 are respectively arranged on two sides of the transmission connecting piece 5, when the first spring 7 is compressed by the transmission connecting piece 5, the second spring 8 supports the transmission connecting piece 5, so that the fluctuation of the main shaft 2 is reduced, the welding stability is improved, the first spring 7 is arranged in the middle of the transmission connecting piece 5, the force transmission of the transmission connecting piece 5 between the main shaft 2 and the first spring 7 is more stable, the transmission connecting piece 5 can transmit a part of lateral load to the guide shaft 4, the transmission connecting piece 5 is prevented from bending deformation, and the transmission connecting piece 5 is applicable to a working condition with higher welding pressure;
in addition, the arrangement of the guide shaft 4 can also prevent the main shaft 2 from rotating, and the main shaft 2 can only be ensured to be displaced along the axial direction of the main shaft by utilizing the matching of the transmission connecting piece 5 and the guide shaft 4;
meanwhile, the first spring 7 and the second spring 8 are arranged in the central through hole 3-1 of the intermediate shaft 3, so that the first spring 7 and the second spring 8 can be supported to a certain extent by utilizing the central through hole 3-1 of the intermediate shaft 3, and the first spring 7 and the second spring 8 are prevented from being inclined to the side.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. A three-axis spot welding head is characterized in that: the welding head driving device comprises a base (1) used for connecting external driving force, a main shaft (2) used for installing a welding head, an intermediate shaft (3) which is fixed on the base (1) and provided with a central through hole (3-1), a guide shaft (4) fixed on the base (1), a transmission connecting piece (5) and a pressure sensor (6), wherein the main shaft (2) is arranged on the base (1) in a sliding mode along the axis direction of the main shaft, a radial hole (3-2) communicated with the central through hole (3-1) penetrates through the peripheral surface of the intermediate shaft (3), one end of the transmission connecting piece (5) is fixedly connected with the main shaft (2), and the other end of the transmission connecting piece is connected with the guide shaft (4;
the utility model discloses a transmission connecting piece, including transmission connecting piece (5), pressure sensor (6), upper end butt on pressure sensor (6), the lower extreme of first spring (7) connects in the middle part of transmission connecting piece (5) upper surface, the upper end butt of second spring (8) is in the middle part of transmission connecting piece (5) lower surface, the relative butt of lower extreme of second spring (8) is on base (1), first spring (7) and second spring (8) all are located central through hole (3-1).
2. The three-axis spot welder head according to claim 1, characterized in that: the transmission connecting piece (5) is provided with two rollers (9) with main shaft (2) complex one end rotation, two rollers (9) are located the both sides of main shaft (2) respectively, and all contact with guiding axle (4).
3. The three-axis spot welder head according to claim 1, characterized in that: a linear bearing (10) is arranged between the main shaft (2) and the base (1).
4. The three-axis spot welder head according to claim 1, characterized in that: the top end of the base (1) is provided with an upper cover (11), the pressure sensor (6) is fixedly installed in the upper cover (11), and the upper cover (11) is in threaded connection with the base (1).
5. The three-axis spot welder head according to claim 1, characterized in that: the bottom of base (1) is equipped with lower cover (12), lower cover (12) and base (1) threaded connection, the lower extreme butt of second spring (8) is in the inboard of lower cover (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922461264.8U CN210046147U (en) | 2019-12-31 | 2019-12-31 | Three-shaft spot welding machine head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922461264.8U CN210046147U (en) | 2019-12-31 | 2019-12-31 | Three-shaft spot welding machine head |
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| Publication Number | Publication Date |
|---|---|
| CN210046147U true CN210046147U (en) | 2020-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922461264.8U Active CN210046147U (en) | 2019-12-31 | 2019-12-31 | Three-shaft spot welding machine head |
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| CN (1) | CN210046147U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115781095A (en) * | 2023-01-06 | 2023-03-14 | 西北电子装备技术研究所(中国电子科技集团公司第二研究所) | Double-spring seam welding head and parallel seam welding machine |
-
2019
- 2019-12-31 CN CN201922461264.8U patent/CN210046147U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115781095A (en) * | 2023-01-06 | 2023-03-14 | 西北电子装备技术研究所(中国电子科技集团公司第二研究所) | Double-spring seam welding head and parallel seam welding machine |
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