Chain welding plate positioning device

Abstract

The invention belongs to the technical field of chain welding tools, and particularly relates to a chain welding plate positioning device which comprises a bottom plate, a positioning seat fixedly connected to the upper end of the bottom plate, a chain plate fixing block fixedly arranged at one end of the positioning seat, a positioning support fixedly arranged on one side of the upper end of the positioning seat and a welding plate positioning block fixedly connected with the positioning support. The welding plate positioning block and the chain plate fixing block are matched with each other to achieve relative positioning of the chain plate and the welding plate, and the bottom plate is further provided with a guide block used for restraining the height of the chain plate and a first extrusion mechanism used for restraining the transverse position of the chain plate and the transverse position of the welding plate. And the second extrusion mechanism is used for restraining the longitudinal position of the chain plate. Accurate positioning between the welding plate and the chain plate can be achieved, positioning is firm, the welding construction quality of the welding plate chain can be greatly improved, and the welding efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of chain welding tooling, and particularly relates to a chain welding plate positioning device. BACKGROUND

[0002] The welding plate chain refers to welding a metal plate on one side of a chain plate, and connecting a secondary device through a connecting hole on the metal plate. Figure 5 、 6 As shown in the drawings, the chain plate of the chain is in a U shape, the two arms of the U shape are symmetrically arranged in a bent shape, the bent shape forms a Z-shaped structure, the Z-shaped structure comprises a first straight plate segment located on the outer side, a second straight plate segment located on the inner side, and an inclined plate segment located between the first straight plate segment and the second straight plate segment, wherein the spacing between the two first straight plate segments of the chain plate is greater than the spacing between the two second straight plate segments, chain plate holes are respectively arranged at the front of the first straight plate segment and the rear of the second straight plate segment, and the chain plate holes of the two arms are one-to-one opposite and used to connect a pin shaft. A welding plate perpendicular to the surface of the side arm is welded on the outer surface of the side arm, wherein the welding plate not only needs to be perpendicular to the surface of the side arm, but also needs to be welded at the middle position of the side arm, and the welding plate has a common horizontal middle plane with the chain plate, the bottom end of the welding plate is welded with a set position of the outer surface of the inclined plate and the outer surface of the second straight plate segment, and a connecting hole is arranged on the welding plate and used to connect a rake rod for harvesting cotton through a bolt.

[0003] However, there is still a lack of positioning tooling for welding the welding plate chain in the prior art, and the operator uses non-special tools to position the welding plate, which can easily lead to inaccurate welding position, welding angle deviation, different product forms for each welding, and uneven quality, which ultimately affects the assembly with the rake rod. Therefore, it is urgent to develop a welding plate chain positioning tooling, especially a welding plate chain welding positioning tooling for a cotton harvester. SUMMARY

[0004] The application discloses a chain welding plate positioning device, and aims to provide a welding plate chain positioning tooling, especially a welding plate chain welding positioning tooling for a cotton harvester.

[0005] To achieve the above-mentioned purpose, the technical scheme of the application is as follows: A chain welding plate positioning device includes: a base plate, a positioning seat fixedly connected to the upper end of the base plate, a chain plate fixing block fixedly disposed at one end of the positioning seat, a positioning bracket fixedly disposed on one side of the upper end of the positioning seat, and a welding plate positioning block fixedly connected to the positioning bracket. The welding plate positioning block and the chain plate fixing block cooperate with each other to achieve relative positioning of the chain plate and the welding plate. The base plate is also provided with a guide block for constraining the height of the chain plate, a first pressing mechanism for constraining the lateral position of the chain plate and the welding plate, and a second pressing mechanism for constraining the longitudinal position of the chain plate.

[0006] Preferably, the welding plate positioning block and the chain plate fixing block are located on the same side of the mounting base, and the bottom of the welding plate positioning block is higher than the top of the chain plate fixing block. The shape of the chain plate fixing block is consistent with the shape of the inner cavity of the chain plate and is used to position the chain plate. The outer surface of the welding plate positioning block is provided with a fixing groove that matches the shape of the upper part of the welding plate. The bottom of the fixing groove is provided with a positioning rod that matches the shape of the connecting hole on the welding plate. The upper surface of the bottom plate on the side opposite to the positioning bracket of the chain plate fixing block is provided with a guide block, which is used to position the height of the open end of the chain plate.

[0007] Preferably, the guide block includes a vertical rod, which is fixedly connected to the base plate. A horizontal plate is integrally connected to the top of the vertical rod facing the side of the chain plate fixing block. The bottom end of the horizontal plate facing the chain plate fixing block has an inclined surface. After the chain plate is inserted into the chain plate fixing block, the upper arm end of the chain plate enters the bottom of the horizontal plate through the inclined surface. When the inner surface of the U-shaped bottom of the chain plate abuts against the end of the chain plate fixing block away from the guide block, the horizontal plate simultaneously constrains the height of the upper arm.

[0008] Preferably, the first pressing mechanism includes a first clamp disposed on the upper surface of the base plate and disposed opposite to the guide block. The first clamp pushes the chain plate longitudinally to a designated position via a push rod and enables the horizontal plate to constrain the height of the upper arm.

[0009] Preferably, the second extrusion mechanism includes a second clamp, which is disposed on the upper surface of the base plate and on the side opposite to the chain plate fixing block. An L-shaped positioning block is provided between the second clamp and the chain plate fixing block. The two ends of the L-shaped positioning block are slidably connected to a linear guide rail preset on the upper surface of the base plate. The vertical section of the L-shaped positioning block is connected to a welding plate extrusion positioning assembly for extruding and positioning the welding plate. The horizontal section of the L-shaped positioning block is used for transverse extrusion and positioning of the chain plate. The second clamp is connected to the L-shaped positioning block.

[0010] Preferably, the vertical section has a threaded hole along its horizontal direction, and the welding plate extrusion positioning assembly includes a lead screw that passes through and is screwed into the threaded hole. One end of the second clamp is fixedly connected to the end of the lead screw, and the lead screw drives the L-shaped positioning block to move to one side of the chain plate.

[0011] Preferably, the first clamp and the second clamp are GH-36020-SS clamps, respectively.

[0012] Preferably, one end of the base plate is integrally connected to an extension plate in the longitudinal direction, and the first clamp is mounted on the upper surface of the extension plate.

[0013] The beneficial effects of the chain welding plate positioning device of the present invention are as follows: the present invention can achieve precise positioning between the welding plate and the chain plate, and the positioning is firm, which can greatly improve the quality of welding construction of welding plate chain, improve welding efficiency, ensure that the welding position and angle of the welding plate are accurate, which is conducive to improving the quality of welding plate chain and facilitating subsequent assembly with secondary equipment through welding plate. Attached Figure Description

[0014] Figure 1 This is a top view of the structure when the invention is in use; Figure 2 yes Figure 1 A top view of the structure after removing the chain plate, guide block, and welding plate positioning block; Figure 3 This is a front view structural diagram of the present invention; Figure 4 This is a side view of the present invention after removing the second extrusion mechanism; Figure 5 This is a top view of the chain of a cotton harvester; Figure 6 This is a front view structural diagram of the chain and chain plate of a cotton harvester; Figure 7 This is a photo of the GH-36020-SS clamp connecting lead screw.

[0015] Marked in the image: 1. Chain plate; 2. Welded plate; 3. Connecting hole; 4. Pin; 5. Base plate; 51. Extension plate; 52. Installation position of the first fixture; 53. Push rod; 6. Positioning seat; 7. Positioning bracket; 8. Welded plate positioning block; 81. Fixing groove; 82. Positioning rod; 9. Guide block; 91. Horizontal plate; 92. Inclined surface; 10. L-shaped positioning block; 101. Vertical section; 102. Horizontal section; 11. First straight plate section; 12. Inclined section; 13. Second straight plate section; 14. Lead screw; 15. Installation position of the second fixture; 16. Linear guide rail; 17. Chain plate fixing block. Detailed Implementation

[0016] The following description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0017] The following embodiments can be understood as illustrating a part of the structure or method of the present invention individually, or as combining the embodiments to explain the broader structure or method of the present invention.

[0018] It should be noted that the welding plate positioning fixture provided by this invention is not limited to the positioning fixture for welding welding plates of cotton harvester chains. Based on its principle, the shape of the chain plate fixing block is improved to be applicable to welding other chain welding plates, which is still within the protection scope of this invention.

[0019] For ease of explanation, this invention defines the left-right direction within the horizontal plane of the base plate as the transverse direction, and the front-back direction within the horizontal plane as the longitudinal direction. The structural principle of this invention will be described in detail below with reference to the accompanying drawings.

[0020] Example 1: A chain welding plate positioning device, such as Figures 1-7 As shown, it includes: a base plate 5, a positioning seat 6 fixedly connected to the upper end of the base plate 5, a chain plate fixing block 17 fixedly disposed at one end of the positioning seat 6, a positioning bracket 7 fixedly disposed on one side of the upper end of the positioning seat 6, and a welding plate positioning block 8 fixedly connected to the positioning bracket 7. The welding plate positioning block 8 and the chain plate fixing block 17 cooperate with each other to achieve relative positioning of the chain plate and the welding plate. The base plate 1 is also provided with a guide block 9 for constraining the height of the chain plate, a first pressing mechanism for constraining the lateral position of the chain plate 1 and the welding plate 2, and a second pressing mechanism for constraining the longitudinal position of the chain plate 1.

[0021] Example 2: like Figure 1 , 3As shown in Figure 4, the welding plate positioning block 8 and the chain plate fixing block 17 are located on the same side of the mounting base, and the bottom of the welding plate positioning block 8 is higher than the top of the chain plate fixing block 17. This provides a space for the chain plate 1 to be inserted into the chain plate fixing block 17, and exposes the welding position between the lower part of the welding plate 2 and the top of the chain plate 1, facilitating welding by workers or robots. The shape of the chain plate fixing block 17 matches the shape of the inner cavity of the chain plate and is used to position the chain plate. After the chain plate is inserted, the chain plate fixing block is located in the inner cavity of the chain plate, thus positioning the chain plate. The outer surface of the welding plate positioning block 8 has a fixing groove 81 that matches the shape of the upper part of the welding plate 2. The bottom of the fixing groove 81 is equipped with a positioning rod 82 that matches the shape of the connecting hole 3 on the welding plate 2. The upper surface of the bottom plate of the chain plate fixing block 17 on the side opposite to the positioning bracket 7 is provided with a guide block 9. Figure 4 As shown, the guide block 9 is used to position the height of one side of the open end of the chain plate 1.

[0022] like Figure 4 As shown, the guide block 9 includes a vertical rod (not shown in the figure), which is fixedly connected to the base plate 5. A horizontal plate 91 is integrally connected to the top of the vertical rod facing the chain plate fixing block 17. The bottom end of the horizontal plate 91 facing the chain plate fixing block 17 has an inclined surface 92. After the chain plate 1 is inserted into the chain plate fixing block 17, the upper arm end of the chain plate 1 enters the bottom of the horizontal plate 91 via the inclined surface 92. When the inner surface of the U-shaped bottom of the chain plate 1 abuts against the end of the chain plate fixing block 17 away from the guide block 9, the horizontal plate 91 simultaneously constrains the height of the upper arm. Figure 2 , 4 As shown, the outer perimeter of one end of the chain plate fixing block is reduced to allow for clearance, which ensures longitudinal positioning of the chain plate while facilitating disassembly after welding.

[0023] Example 3: like Figure 1 , 7 As shown, the first extrusion mechanism includes a first clamp (installation position 52 of the first clamp) disposed on the upper surface of the base plate 5 and opposite to the guide block 9. The first clamp pushes the chain plate 1 longitudinally to the designated position through the push rod 53 and enables the horizontal plate 91 to constrain the height of the upper arm.

[0024] like Figure 1 , 7As shown, the second extrusion mechanism includes a second clamp (installation position 15 of the second clamp), which is located on the upper surface of the base plate 5 and on the side opposite to the chain plate fixing block 17. An L-shaped positioning block 10 is provided between the second clamp and the chain plate fixing block 17. The two longitudinal ends of the L-shaped positioning block 10 are respectively slidably connected to the linear guide rail 16 preset on the upper surface of the base plate 5. The vertical section 101 of the L-shaped positioning block 10 is connected to a welding plate extrusion positioning assembly for extruding and positioning the welding plate 2. The horizontal section 102 of the L-shaped positioning block is used for transverse extrusion and positioning of the chain plate. The second clamp is connected to the L-shaped positioning block 10.

[0025] Specifically, such as Figures 1-3 As shown in Figure 7, the vertical section 101 has a threaded hole (not shown in the figure) opened laterally along its upper edge. The welding plate extrusion positioning assembly includes a lead screw 14 that passes through the threaded hole and is screwed to the threaded hole. One end of the second clamp is fixedly connected to the end of the lead screw 14 (e.g., Figure 7 As shown), the L-shaped positioning block 10 is moved to one side of the chain plate 1 by the lead screw 14. The purpose of setting the lead screw is to adjust the distance between its end and the welding plate by rotating the lead screw, so that when the lead screw is pushed by the second clamp, the end of the lead screw and the end of the horizontal section can push the welding plate and the chain plate into place at the same time, that is, the contact time between the chain plate and the positioning seat surface at the root of the chain plate fixing block is synchronized with the contact time between the welding plate and the bottom of the fixing groove.

[0026] like Figure 7 As shown, the first clamp and the second clamp are GH-36020-SS clamps, which are commercially available products in the prior art. After being connected to a push rod or a lead screw, the chain plate can be moved by the push rod or the lead screw.

[0027] like Figure 1 As shown, one end of the base plate 5 is integrally connected to an extension plate 51 in the longitudinal direction, and the first clamp is installed on the upper surface of the extension plate 51.

[0028] Working principle of the invention: like Figures 1-7As shown, in use, with the open end of the chain plate facing the chain plate fixing block, after initially inserting it into the chain plate fixing block, the first clamp is connected to the push rod. By pushing the first push rod, the chain plate is inserted into the designated position, that is, the upper arm of the chain plate is constrained by the horizontal plate, and the inner cavity of the chain plate is longitudinally positioned by the chain plate fixing block. The longitudinal position of the chain plate reaches the set standard. At this time, the upper part of the welding plate is inserted into the fixing groove. The second clamp pushes the screw to move the L-shaped positioning block 10 to one side of the chain plate. The screw and the end of the horizontal section simultaneously push and squeeze the chain plate and the welding plate to the set lateral position, that is, simultaneously complete the squeezing contact between the chain plate and the positioning seat surface at the root of the chain plate fixing block, and the squeezing contact between the welding plate and the bottom of the fixing groove. At this time, the chain plate and the welding plate are precisely positioned and the positioning is ensured to be firm. Subsequently, the contact parts between the welding plate and the chain plate surface can be welded manually or by a robotic arm. After welding, the push rod or screw and the horizontal section are retracted by the first clamp and the second clamp to remove the welded workpiece.

Claims

1. A chain welding plate positioning device, characterized in that it comprises: The system includes a base plate, a positioning seat fixedly connected to the upper end of the base plate, a chain plate fixing block fixedly disposed at one end of the positioning seat, a positioning bracket fixedly disposed on one side of the upper end of the positioning seat, and a welding plate positioning block fixedly connected to the positioning bracket. The welding plate positioning block and the chain plate fixing block cooperate with each other to achieve relative positioning of the chain plate and the welding plate. The base plate is also provided with a guide block for constraining the height of the chain plate, a first pressing mechanism for constraining the lateral position of the chain plate and the welding plate, and a second pressing mechanism for constraining the longitudinal position of the chain plate.

2. The chain welding plate positioning device as described in claim 1, characterized in that: The welding plate positioning block and the chain plate fixing block are located on the same side of the mounting base, and the bottom of the welding plate positioning block is higher than the top of the chain plate fixing block. The shape of the chain plate fixing block is consistent with the shape of the inner cavity of the chain plate and is used to position the chain plate. The outer surface of the welding plate positioning block is provided with a fixing groove that matches the shape of the upper part of the welding plate. The bottom of the fixing groove is provided with a positioning rod that matches the shape of the connecting hole on the welding plate. The upper surface of the bottom plate on the side opposite to the positioning bracket of the chain plate fixing block is provided with a guide block. The guide block is used to position the height of the open end of the chain plate.

3. The chain welding plate positioning device as described in claim 2, characterized in that: The guide block includes a vertical rod, which is fixedly connected to the base plate. A horizontal plate is integrally connected to the top of the vertical rod facing the side of the chain plate fixing block. The bottom end of the horizontal plate facing the chain plate fixing block has an inclined surface. After the chain plate is inserted into the chain plate fixing block, the upper arm end of the chain plate enters the bottom of the horizontal plate through the inclined surface. When the inner surface of the U-shaped bottom of the chain plate abuts against the end of the chain plate fixing block away from the guide block, the horizontal plate simultaneously constrains the height of the upper arm.

4. The chain welding plate positioning device as described in claim 3, characterized in that: The first extrusion mechanism includes a first clamp disposed on the upper surface of the base plate and opposite to the guide block. The first clamp pushes the chain plate longitudinally to a designated position via a push rod and enables the horizontal plate to constrain the height of the upper arm.

5. The chain welding plate positioning device as described in claim 4, characterized in that: The second extrusion mechanism includes a second clamp, which is located on the upper surface of the base plate and on the side opposite to the chain plate fixing block. An L-shaped positioning block is provided between the second clamp and the chain plate fixing block. The two ends of the L-shaped positioning block are slidably connected to a linear guide rail preset on the upper surface of the base plate. The vertical section of the L-shaped positioning block is connected to a welding plate extrusion positioning assembly for extruding and positioning the welding plate. The horizontal section of the L-shaped positioning block is used for transverse extrusion and positioning of the chain plate. The second clamp is connected to the L-shaped positioning block.

6. The chain welding plate positioning device as described in claim 5, characterized in that: The vertical section has a threaded hole along its horizontal direction. The welding plate extrusion positioning assembly includes a lead screw that passes through the threaded hole and is screwed to it. One end of the second clamp is fixedly connected to the end of the lead screw, and the lead screw drives the L-shaped positioning block to move to one side of the chain plate.

7. The chain welding plate positioning device as described in claim 6, characterized in that: The first clamp and the second clamp are respectively GH-36020-SS clamps.

8. The chain welding plate positioning device as described in claim 7, characterized in that: An extension plate is integrally connected to one end of the base plate in the longitudinal direction, and the first clamp is installed on the upper surface of the extension plate.

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