A positioning tool for welding augers

Abstract

The present invention relates to a positioning tool for welding an auger shaft, comprising a support frame, a tool support platform fixed on the support frame, a fixed end positioning mechanism for positioning the shaft head at one end of the auger shaft installed at one end above the tool support platform, and a sliding end positioning mechanism for positioning the shaft head at the other end of the auger shaft installed at the other end; an array of positioning clamping mechanisms is arranged between the fixed end positioning machine and the sliding end positioning mechanism along the setting direction of the auger shaft; two groups of pop-up rotating support seats for lifting the auger shaft to the upper working position are arranged at intervals between the array of positioning clamping mechanisms. The positioning tool has accurate and reliable positioning, reduces the amount of post-welding processing, is suitable for welding various types of auger shafts, reduces work intensity, and improves work efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of corn harvester production, and in particular relates to a positioning tool for welding an auger shaft. Background Art

[0002] The auger shaft on the corn harvester is composed of a shaft tube main body, a web part connected to both ends of the shaft tube main body, and a shaft head part connected to the two webs. When processing and producing the auger shaft, the web and the shaft head are first coaxially fixedly connected, and then the web is welded to the end of the shaft tube main body. During the welding process, the coaxiality of the shaft tube main body and the shaft head must be ensured.

[0003] The existing welding method of the main body of the welded shaft tube and the shaft head is to first spot weld and then weld for a circle. The shortcomings of the welding positioning tool currently used are:

[0004] 1. The positioning is not accurate enough and the amount of post-welding processing is large.

[0005] 2. There are many types of auger shafts, and one tool cannot be used for all of them.

[0006] 3. Spot welding has low efficiency and high handling intensity. Summary of the invention

[0007] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a positioning tool for auger shaft welding that has accurate and reliable positioning, can reduce the amount of post-welding processing, is suitable for welding of various types of auger shafts, reduces work intensity, and improves work efficiency.

[0008] The above-mentioned object of the present invention is achieved by the following technical solutions:

[0009] A positioning fixture for auger shaft welding, characterized in that: it comprises a support frame, a fixture support platform is fixed on the support frame, a fixed end positioning mechanism for positioning the shaft head at one end of the auger shaft is installed at one end above the fixture support platform, and a sliding end positioning mechanism for positioning the shaft head at the other end of the auger shaft is installed at the other end; an array positioning clamping mechanism is arranged between the fixed end positioning mechanism and the sliding end positioning mechanism along the setting direction of the auger shaft; two groups of pop-up rotating support seats for lifting the auger shaft to the upper working position are arranged at intervals between the array positioning clamping mechanisms;

[0010] The fixed end positioning mechanism and the sliding end positioning mechanism both include a positioning base plate, a shaft head support assembly and a shaft head clamping mechanism installed on the upper end of the positioning base plate; the shaft head support assembly is provided with a V-shaped positioning block in contact with the workpiece shaft head and a side stopper for limiting the web of the workpiece; the shaft head clamping mechanism adopts a downward pressure type quick clamp; the positioning base plate of the fixed end positioning mechanism is fixedly connected to the tooling support platform, and the positioning base plate of the sliding end positioning mechanism is fixedly connected to the tooling support platform in an adjustable manner along the axial direction of the auger shaft;

[0011] Each group of the positioning and clamping mechanisms adopts a quick clamp clamping structure, the clamping device is connected to the tooling support platform, a first clamping block is arranged on the inner side of the fixed arm of the clamping device, a second clamping block is installed on the end of the clamping arm of the clamping device, and a third clamping block is fixed on the tooling support platform at a position corresponding to the clamping device; when the clamping arm is in a clamping state, the three clamping blocks form a three-point clamping contact with one circle of the auger shaft;

[0012] The pop-up rotating support seat includes a base plate, which is fixedly connected to the tooling support platform. An axle tube bracket is arranged at the upper end of the base plate, and the axle tube bracket is connected to the base plate by an elastic connection structure that can move up and down. An axle tube clearance groove is arranged at the upper end of the axle tube bracket, and rollers supporting the workpiece axle tube body are connected to the axle tube clearance groove on both sides through a support shaft, and the rollers on both sides form supporting contact with the lower end of the axle tube body.

[0013] Furthermore, the support platform is a stepped platform structure with a high-position support table and a low-position support table at the upper end, the high-position support table is a finished product storage table, and the low-position support table is a positioning tool installation table; the finished product storage table is provided with an inclination angle, wherein the end close to the tool installation table is the high-position end, and the end away from the tool installation table is the low-position end, and an upward extending blocking column is welded at the low-position end.

[0014] Furthermore, a vertical guide shaft is connected to each of the two ends of the base plate near the shaft tube bracket, and a sliding sleeve is mounted on the two vertical guide shafts above the base plate. The outer side of the sliding sleeve is fixedly connected to the shaft tube bracket, and a lifting compression spring is mounted below the sliding sleeve on the two vertical guide shafts. The upper and lower ends of the lifting compression spring are respectively pressed and contacted with the lower end of the sliding sleeve and the upper end of the base plate, and a sliding sleeve limit stopper is fixed on the two vertical guide shafts above the sliding sleeve; the vertical guide shaft, the sliding sleeve and the lifting compression spring cooperate to form the elastic connection structure that can move up and down.

[0015] Furthermore, a fixed buckle is fixedly installed on both sides of the base plate near the inner end, and a movable buckle that can be adjusted laterally is fixedly connected to the outer end of the base plate near both sides. The base plate is connected to the inner and outer ends of the support platform through the two fixed buckles and the two movable buckles. A quick clamp is connected to the position of the base plate between the two movable buckles to fix the base plate and the support platform. The quick clamp adopts an F clamp.

[0016] Furthermore, the positioning and clamping mechanisms are divided into three groups, which are respectively arranged in the middle of the shaft tube body where the auger shaft is placed and near the two ends, among which the positioning and clamping mechanism near one end of the sliding end positioning mechanism is installed on the positioning base plate of the sliding end positioning mechanism.

[0017] The present invention has the advantages and positive effects:

[0018] 1. This auger shaft welding positioning fixture positions and clamps the two shaft heads and two webs of the auger shaft through a fixed end positioning mechanism and a sliding end positioning mechanism, and positions and clamps the main body of the shaft tube through an array positioning and clamping mechanism. It has the advantages of accurate and reliable positioning and reduces the amount of processing after welding.

[0019] 2. The positioning fixture for welding the auger shaft can adjust the position of the sliding end positioning mechanism, realize the adjustment of the distance between the fixed end positioning mechanism and the sliding end positioning mechanism, meet the positioning and clamping of auger shafts of various lengths (different models), and is suitable for welding auger shafts of different lengths.

[0020] 3. Use the positioning fixture for welding the auger shaft. After spot welding the webs at both ends to the ends of the shaft tube main body, loosen the fixed end positioning mechanism, the sliding end positioning mechanism and the multiple positioning clamping mechanisms. The pop-up rotating support seat will automatically pop up, and the auger shaft will be lifted to the upper working position. In the upper working position, by rotating the auger shaft, the welding of the webs and the ends of the shaft tube main body can be achieved. It has the advantages of convenient welding and labor-saving operation, and also greatly improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 yes Figure 1 A local enlarged view of point A;

[0023] Figure 3 yes Figure 1 A partial enlarged view of point B;

[0024] Figure 4 yes Figure 1 Schematic diagram of the structure of the central spring rotating support seat. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and through specific embodiments. The following embodiments are only illustrative and not restrictive, and the protection scope of the present invention cannot be limited thereto.

[0026] A positioning tool for welding the auger shaft, see Figure 1-4 , the invention point is:

[0027] It includes a support frame 1, on which a tool support platform is fixed, and a fixed end positioning mechanism 5 for positioning the shaft head at one end of the auger shaft is installed at one end above the tool support platform, and a sliding end positioning mechanism 2 for positioning the shaft head at the other end of the auger shaft is installed at the other end. An array positioning clamping mechanism 4 is arranged between the fixed end positioning mechanism and the sliding end positioning mechanism along the setting direction of the auger shaft; two groups of pop-up rotating support seats 3 for lifting the auger shaft to the upper working position are arranged at intervals between the array positioning clamping mechanisms.

[0028] The sliding end positioning mechanism includes a positioning base plate 2-3, a shaft head support assembly 2-2 installed on the upper end of the positioning base plate, and a shaft head clamping mechanism 2-1. The shaft head support assembly is provided with a V-shaped positioning block 2-2-1 that contacts the shaft head of the workpiece and a side block 2-2-2 that limits the web of the workpiece; the shaft head clamping mechanism adopts a downward pressure type quick clamp; the positioning base plate of the sliding end positioning mechanism is fixedly connected to the tooling support platform along the axial direction of the auger shaft in an adjustable manner. Specifically, a positioning guide groove along the axial direction of the auger shaft can be provided at the upper end of the tooling support platform, and a guide block installation groove is provided at the lower end of the positioning base plate of the sliding end positioning mechanism. The guide block installation groove is aligned with the positioning guide groove up and down, and the guide block is fixedly installed in the guide block installation groove by screws, and the lower part of the guide block is inserted into the positioning guide groove. In this way, the sliding end positioning mechanism can be adjusted along the axial position of the auger shaft, thereby cooperating with the fixed end positioning mechanism to meet the welding positioning of auger shafts of various lengths (various models). After the sliding end positioning mechanism is adjusted into place, the positioning base plate of the sliding end positioning mechanism is fixedly connected to the tooling support platform by a clamp, which is not shown in the attached drawings. The specific structure of the fixed end positioning mechanism refers to the specific structure of the sliding end positioning mechanism described above, except that the positioning base plate of the fixed end positioning mechanism is fixedly connected to the tooling support platform in a non-adjustable manner.

[0029] Each group of the positioning and clamping mechanisms adopts a quick clamp clamping structure. The clamping device 4-1 is connected to the tooling support platform. A first clamping block 4-2 is arranged on the inner side of the fixed arm of the clamping device. A second clamping block 4-1 is installed on the end of the clamping arm of the clamping device. A third clamping block 4-3 is fixed on the tooling support platform at a position corresponding to the clamping device. When the clamping arm is in a clamping state, the three clamping blocks form a three-point clamping contact with one circle of the auger shaft, thereby clamping and fixing the shaft tube body of the auger shaft.

[0030] The pop-up rotating support seat includes a base plate 3-1, which is fixedly connected to the tooling support platform. An axle tube bracket 3-2 is arranged at the upper end of the base plate. The axle tube bracket is connected to the base plate through an elastic connection structure that can move up and down. An axle tube clearance groove 3-2-1 is arranged at the upper end of the axle tube bracket. Rollers 3-3 supporting the workpiece axle tube body are connected on both sides of the axle tube clearance groove through a support shaft. The rollers on both sides form a supporting contact with the lower end of the axle tube body, and the rollers can use bearings.

[0031] In the above structure, further: the support frame is a stepped frame structure with a high-position support table 1-1 and a low-position support table 1-2 at the upper end. The high-position support table is a finished product storage table, and the low-position support table is a positioning tool installation table; the finished product storage table is provided with an inclination angle, wherein the end close to the tool installation table is the high-position end, and the end away from the tool installation table is the low-position end, and a blocking column extending upward is welded at the low-position end, and there are multiple blocking shafts, which are arranged at a certain interval along the axial direction of the auger shaft, and the function of the blocking column is to prevent the auger shaft welding product placed on the high-position support table from falling from the low-position end of the high-position support table.

[0032] In the above structure, further: a vertical guide shaft 3-4 is connected to each of the two ends of the base plate near the shaft tube bracket, a sliding sleeve 3-6 is mounted on the two vertical guide shafts above the base plate, the outer side of the sliding sleeve is fixedly connected to the shaft tube bracket, a lifting compression spring 3-7 is mounted below the sliding sleeve on the two vertical guide shafts, and the upper and lower ends of the lifting compression spring are respectively pressed and contacted with the lower end of the sliding sleeve and the upper end of the base plate, and a sliding sleeve limit stopper 3-5 is fixed on the two vertical guide shafts above the sliding sleeve, such as the attached Figure 2 The limit stopper on the left vertical guide shaft adopts a stopper structure, and the stopper is inserted into the cotter pin on the left vertical guide shaft to perform the upper limit position; and the limit stopper on the right vertical guide shaft adopts a nut, and the nut is connected to the upper end of the right vertical guide shaft through a thread. The vertical guide shaft, the sliding sleeve and the lifting compression spring cooperate to form the elastic connection structure that can move up and down.

[0033] In the above structure, further: a fixed buckle 3-8 is fixedly installed on both sides of the base plate near the inner end, and a movable buckle 3-9 that can be adjusted in the transverse direction is fixedly connected to the positions near the outer ends of the base plate near the two sides. The base plate is connected to the inner and outer ends of the support platform through the two fixed buckles and the two movable buckles. A quick clamp 3-10 is connected to the base plate between the two movable buckles to fix the base plate and the support platform. The quick clamp adopts an F clamp. The base plate is connected to the tooling support platform in this way, and the axial position of the pop-up rotating support seat along the auger shaft can be easily adjusted to meet the welding requirements of auger shafts of various lengths (various models).

[0034] In the above structure, further: the positioning and clamping mechanism is preferably three groups, which are respectively arranged in the middle of the shaft tube body where the auger shaft is placed and near the two ends, wherein the positioning and clamping mechanism near one end of the sliding end positioning mechanism is installed on the positioning base plate of the sliding end positioning mechanism.

[0035] Instructions for use of this auger shaft welding positioning tool:

[0036] According to the length of the specific auger shaft to be welded, adjust the sliding end positioning mechanism to the position suitable for this model and fix it; place the various welding parts of the auger shaft on the tooling, use the sliding end positioning mechanism and the fixed end positioning mechanism to position the shaft heads and webs at both ends, and use multiple sets of positioning clamping mechanisms to clamp and fix the shaft tube body of the workpiece; then spot weld the webs at both ends and the two ends of the shaft tube body respectively; after spot welding, loosen the clamping mechanisms on the sliding end positioning mechanism, the fixed end positioning mechanism and the multiple sets of positioning clamping mechanisms, and the spring-up rotating support seat will lift the shaft tube bracket under the action of the two lifting compression springs, and lift the auger shaft to the upper working position. Because the spring-up rotating support seat uses rollers to contact the auger tube shaft, during the welding process, you only need to gently rotate the auger tube shaft to achieve the welding of the full weld of the auger shaft head. After welding is completed, you only need to lift the auger tube shaft and place it on the high-position support table. Because the high-position support table has a certain inclination angle, the auger tube will automatically roll to the far end position. After the platform is full, just use a sling to lift it away.

[0037] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A positioning tool for welding an auger shaft, characterized in that: It comprises a support frame, on which a tool support platform is fixed, a fixed end positioning mechanism for positioning the shaft head at one end of the auger shaft is installed at one end above the tool support platform, and a sliding end positioning mechanism for positioning the shaft head at the other end of the auger shaft is installed at the other end; an array positioning clamping mechanism is arranged between the fixed end positioning mechanism and the sliding end positioning mechanism along the setting direction of the auger shaft; two groups of pop-up rotating support seats for lifting the auger shaft to the upper working position are arranged at intervals between the array positioning clamping mechanisms; The fixed end positioning mechanism and the sliding end positioning mechanism both include a positioning base plate, a shaft head support assembly and a shaft head clamping mechanism installed on the upper end of the positioning base plate; the shaft head support assembly is provided with a V-shaped positioning block in contact with the workpiece shaft head and a side stopper for limiting the web of the workpiece; the shaft head clamping mechanism adopts a downward pressure type quick clamp; the positioning base plate of the fixed end positioning mechanism is fixedly connected to the tooling support platform, and the positioning base plate of the sliding end positioning mechanism is fixedly connected to the tooling support platform in an adjustable manner along the axial direction of the auger shaft; Each group of the positioning and clamping mechanisms adopts a quick clamp clamping structure, the clamping device is connected to the tooling support platform, a first clamping block is arranged on the inner side of the fixed arm of the clamping device, a second clamping block is installed on the end of the clamping arm of the clamping device, and a third clamping block is fixed on the tooling support platform at a position corresponding to the clamping device; when the clamping arm is in a clamping state, the three clamping blocks form a three-point clamping contact with one circle of the auger shaft; The pop-up rotating support seat includes a base plate, which is fixedly connected to the tooling support platform. An axle tube bracket is arranged at the upper end of the base plate, and the axle tube bracket is connected to the base plate by an elastic connection structure that can move up and down. An axle tube clearance groove is arranged at the upper end of the axle tube bracket, and rollers supporting the workpiece axle tube body are connected to the axle tube clearance groove on both sides through a support shaft, and the rollers on both sides form supporting contact with the lower end of the axle tube body.

2. The positioning tool for welding the auger shaft according to claim 1, characterized in that: The support platform is a stepped platform structure with a high-position support table and a low-position support table at the upper end, the high-position support table is a finished product storage table, and the low-position support table is a positioning tool installation table; the finished product storage table is provided with an inclination angle, wherein the end close to the tool installation table is the high-position end, and the end away from the tool installation table is the low-position end, and an upward extending blocking column is welded at the low-position end.

3. The positioning tool for welding the auger shaft according to claim 1, characterized in that: A vertical guide shaft is connected to each of the two ends of the base plate near the shaft tube bracket. A sliding sleeve is mounted on the two vertical guide shafts above the base plate. The outer side of the sliding sleeve is fixedly connected to the shaft tube bracket. A lifting compression spring is mounted below the sliding sleeve on the two vertical guide shafts. The upper and lower ends of the lifting compression spring are respectively pressed and contacted with the lower end of the sliding sleeve and the upper end of the base plate. A sliding sleeve limit stopper is fixed on the two vertical guide shafts above the sliding sleeve. The vertical guide shaft, the sliding sleeve and the lifting compression spring cooperate to form the elastic connection structure that can move up and down.

4. The positioning tool for welding the auger shaft according to claim 1, characterized in that: A fixed buckle is fixedly installed on both sides of the base plate near the inner end, and a movable buckle that can be adjusted laterally is fixedly connected to the outer end of the base plate near both sides. The base plate is connected to the inner and outer ends of the support platform through the two fixed buckles and the two movable buckles. A quick clamp is connected to the base plate between the two movable buckles to fix the base plate and the support platform. The quick clamp adopts an F clamp.

5. The positioning tool for auger shaft welding according to claim 1, characterized in that: The positioning and clamping mechanisms are divided into three groups, which are respectively arranged in the middle of the shaft tube body where the auger shaft is placed and near the two ends. Among them, the positioning and clamping mechanism near one end of the sliding end positioning mechanism is installed on the positioning base plate of the sliding end positioning mechanism.

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