Shaft penetrating tool for fork rod welding and fork rod welding equipment

Abstract

The utility model discloses a shaft penetrating tool for fork rod welding and fork rod welding equipment. The shaft penetrating tool comprises a rectangular pipe positioning mechanism, a short shaft sleeve positioning mechanism, a long shaft sleeve positioning mechanism, a long shaft sleeve expansion pin mechanism and a short shaft sleeve expansion pin mechanism. The rectangular pipe positioning mechanism, the short shaft sleeve positioning mechanism and the long shaft sleeve positioning mechanism are used for positioning a rectangular pipe, a short shaft sleeve and a long shaft sleeve at preset positions respectively; the long shaft sleeve expansion pin mechanism is used for being inserted into an inner hole of the long shaft sleeve, and the spatial position of the long shaft sleeve is ensured through expansion of a long shaft sleeve expansion pin; the short shaft sleeve expansion pin mechanism is used for being inserted into an inner hole of a short shaft sleeve, and the spatial position of the short shaft sleeve is guaranteed through expansion of a short shaft sleeve expansion pin. Compared with the prior art, the shaft penetrating tool for fork rod welding and the fork rod welding equipment have the advantages that the positioning precision and the operation efficiency in the fork rod welding process can be remarkably improved.

Description

Technical Field

[0001] The present application relates to the field of mechanical processing technology, and in particular to an axle-threading tool and a fork rod welding device for fork rod welding. Background Art

[0002] Fork rod structural parts (such as those on scissor lift trucks) require rectangular tubes to be inserted into axle sleeves and riveted and welded. The current technology used in the industry is mainly: using simple tooling fixtures, manual loading, manual threading, and manual positioning welding. The construction sequence is: (1) Manual crane loading (rectangular tubes, axle sleeves, etc.); (2) Manual use of simple tooling fixtures to thread the rectangular tubes; (3) Manual positioning welding; (4) Manual crane unloading.

[0003] This welding method has the following disadvantages: it uses original manual workpiece loading, manually operates the fixture to pass the rectangular tube through the shaft, the manual positioning welding has low precision and low efficiency, and the operation mode has a low degree of automation.

[0004] How to improve the positioning accuracy and operating efficiency during the fork rod welding process is a technical problem that needs to be urgently solved by technical personnel in this field. Utility Model Content

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide a shaft-threading tool and fork rod welding equipment for fork rod welding, which can improve the positioning accuracy and working efficiency during the fork rod welding process.

[0006] The technical solution provided by the utility model is as follows:

[0007] A shaft threading tool for fork rod welding, the fork rod includes three workpieces: a rectangular tube, a short shaft sleeve, and a long shaft sleeve. The shaft threading tool includes a rectangular tube positioning mechanism, a short shaft sleeve positioning mechanism, a long shaft sleeve positioning mechanism, a long shaft sleeve expansion pin mechanism, and a short shaft sleeve expansion pin mechanism. The rectangular tube positioning mechanism, the short shaft sleeve positioning mechanism, and the long shaft sleeve positioning mechanism are used to respectively position the rectangular tube, the short shaft sleeve, and the long shaft sleeve at predetermined positions; the long shaft sleeve expansion pin mechanism is used to insert into the inner hole of the long shaft sleeve, and expand and tighten the long shaft sleeve through the expansion pin to ensure the spatial position of the long shaft sleeve; the short shaft sleeve expansion pin mechanism is used to insert into the inner hole of the short shaft sleeve, and expand and tighten the short shaft sleeve through the expansion pin to ensure the spatial position of the short shaft sleeve.

[0008] Preferably, the rectangular tube positioning mechanism includes two positioning mechanisms arranged along the longitudinal direction of the rectangular tube, each positioning mechanism includes two clamping surfaces arranged opposite to each other and capable of relative movement, and one of the clamping surfaces is moved by a driving mechanism so that the clamping surfaces move relative to each other to clamp the rectangular tube.

[0009] Preferably, the short shaft sleeve positioning mechanism includes a vertical positioning seat and an axial positioning seat. The axial positioning seat is closer to the longitudinal center line, can move forward and backward, and is provided with an insertion head to insert into the inner hole of the short shaft sleeve to position the short shaft sleeve in the front and rear direction.

[0010] Preferably, the long shaft sleeve positioning mechanism is provided with two arc-shaped bearing members arranged along the front-rear direction for bearing the long shaft sleeve.

[0011] Preferably, the shaft threading tooling also includes a shaft threading platform, a rectangular tube pushing mechanism, a long shaft sleeve slide mechanism, a short shaft sleeve slide mechanism, and a moving mechanism; the rectangular tube positioning mechanism, the short shaft sleeve positioning mechanism, the long shaft sleeve positioning mechanism, the long shaft sleeve expansion mechanism, the short shaft sleeve expansion mechanism, the rectangular tube pushing mechanism, the long shaft sleeve slide mechanism, the short shaft sleeve slide mechanism, and the moving mechanism are located on the shaft threading platform; the rectangular tube pushing mechanism is used to push the rectangular tube from both ends of the rectangular tube; the rectangular tube positioning mechanism is also used to clamp the rectangular tube; the long shaft sleeve expansion mechanism is fixed on the long shaft sleeve slide mechanism, and the long shaft sleeve slide mechanism is used to drive the long shaft sleeve expansion mechanism to move. The long shaft sleeve expansion pin mechanism is used to insert into the inner hole of the long shaft sleeve under the drive of the long shaft sleeve slide mechanism; the short shaft sleeve expansion pin mechanism is fixed on the short shaft sleeve slide mechanism, and the short shaft sleeve slide mechanism is used to drive the short shaft sleeve expansion pin mechanism to move, and the short shaft sleeve expansion pin mechanism is used to insert into the inner hole of the short shaft sleeve under the drive of the movement of the short shaft sleeve slide mechanism; the rectangular tube positioning mechanism is fixed to the moving mechanism, and the moving mechanism is used to drive the rectangular tube to move through the long shaft sleeve after the long shaft sleeve expansion pin mechanism is inserted into the inner hole of the long shaft sleeve, and further drive the rectangular tube to move until it contacts the edge of the short shaft sleeve, and drive the rectangular tube to move through the short shaft sleeve after the short shaft sleeve expansion pin mechanism is inserted into the inner hole of the short shaft sleeve.

[0012] Preferably, the shaft-penetrating platform comprises a support plate for supporting other components and a frame-shaped seat body located below the support plate.

[0013] Preferably, the rectangular tube pushing mechanism comprises a limiting member and a pushing member, and the pushing member can push the rectangular tube to the right until it abuts against the limiting member.

[0014] Preferably, in the fork rod, there are two rectangular tubes and four short shaft sleeves, two of which are installed at one end of the two rectangular tubes, and the other two are installed in the middle of the two rectangular tubes, and there is one long shaft sleeve installed at the other end of the two rectangular tubes; there are two sets of rectangular tube positioning mechanisms, which are respectively located on the longitudinal front and rear sides of the shaft-threading platform, and are used to position the two rectangular tubes respectively; there are four sets of short shaft sleeve positioning mechanisms, all of which are located on both sides of the longitudinal center line and adjacent to the longitudinal center line, two of which are located in the transverse middle, and the other two are located on the transverse right side; there is only one set of long shaft sleeve positioning mechanisms, which is located on the transverse left side ; There are two sets of rectangular tube pushing mechanisms, which are respectively located on the longitudinal front and rear sides of the shaft-threading platform, and are used to push the two rectangular tubes respectively; there are two sets of long shaft sleeve expansion and pinning mechanisms, which are respectively located on the front and rear ends of the left side in the horizontal direction, and are used to cooperate with the two ends of the inner hole of the long shaft sleeve respectively; there are four sets of short shaft sleeve expansion and pinning mechanisms, all of which are located on the longitudinal front and rear sides, two of which are located in the horizontal middle, and the other two are located on the horizontal right side; there are four sets of short shaft sleeve slide mechanisms, which correspond to each short shaft sleeve expansion and pinning mechanism respectively; there are two sets of moving mechanisms, both of which are located in the horizontal middle, and are respectively located on the longitudinal front and rear sides.

[0015] Preferably, there is only one set of the long shaft sleeve slide mechanism, which is located on the left side in the horizontal direction and is connected to the two long shaft sleeve expansion pin mechanisms to drive the two long shaft sleeve expansion pin mechanisms to move together at the same time.

[0016] A fork rod welding device, the fork rod includes three workpieces: a rectangular tube, a short shaft sleeve, and a long shaft sleeve, and is characterized in that it includes the shaft threading tool as described above.

[0017] Compared with the prior art, the utility model is a shaft threading tool and fork rod welding equipment for fork rod welding, which respectively positions the rectangular tube, short shaft sleeve and long shaft sleeve at predetermined positions by setting a rectangular tube positioning mechanism, a short shaft sleeve positioning mechanism and a long shaft sleeve positioning mechanism, and sets a long shaft sleeve expansion pin mechanism to insert it into the inner hole of the long shaft sleeve, and expands and tightens the long shaft sleeve to ensure the spatial position of the long shaft sleeve, and sets a short shaft sleeve expansion pin mechanism to insert it into the inner hole of the short shaft sleeve, and expands and tightens the short shaft sleeve to ensure the spatial position of the short shaft sleeve, which can significantly improve the positioning accuracy and working efficiency during the fork rod welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a fork rod welded by the fork rod welding device according to an embodiment of the utility model;

[0020] Figure 2 A three-dimensional diagram of the shaft threading tool in the fork rod welding equipment of the embodiment of the utility model;

[0021] Figure 3 for Figure 2 A top view of the shaft threading tool shown;

[0022] Figure 4 for Figure 2 The structural schematic diagram of the shaft threading platform in the shaft threading tooling shown;

[0023] Figure 5 for Figure 2 The structural schematic diagram of the rectangular tube positioning mechanism in the shaft threading tooling shown;

[0024] Figure 6 for Figure 2 A schematic diagram of the structure of a vertical positioning seat in a short shaft sleeve positioning mechanism in a shaft threading tooling shown;

[0025] Figure 7 for Figure 2 A schematic diagram of the structure of the axial positioning seat in the short shaft sleeve positioning mechanism in the shaft threading tooling shown;

[0026] Figure 8 for Figure 2 The structural schematic diagram of the long shaft sleeve positioning mechanism in the shaft threading tooling shown;

[0027] Fig. 9 for Figure 2 A schematic diagram of the structure of a pusher in a rectangular tube tightening mechanism in the shaft threading tooling shown;

[0028] Fig.10 for Figure 2 A schematic diagram of the structure of the limiter in the rectangular tube tightening mechanism in the shaft threading tooling shown;

[0029] Fig.11 for Figure 2 The structural schematic diagram of the long shaft sleeve slide mechanism in the shaft threading tooling shown;

[0030] Fig.12 for Figure 2 A schematic diagram of the structure of the long shaft sleeve expansion pin mechanism located at the front end of the shaft threading tooling shown;

[0031] Fig.13 for Figure 2 A schematic diagram of the structure of the long shaft sleeve expansion pin mechanism located at the rear end of the shaft threading tooling shown;

[0032] Fig.14 for Figure 2 A schematic diagram of the structure of the short shaft sleeve expansion pin mechanism and the short shaft sleeve slide mechanism located in the middle of the shaft threading tooling shown;

[0033] Fig.15 for Figure 2 A schematic diagram of the structure of the short shaft sleeve expansion pin mechanism and the short shaft sleeve slide mechanism located on the right side of the shaft threading tooling shown;

[0034] Fig.16 for Figure 2 The structural schematic diagram of the moving mechanism in the shaft threading tooling shown;

[0035] Fig.17 for Figure 2 The three-dimensional view of the shaft threading tool after positioning each workpiece and before threading the shaft;

[0036] Fig.18 for Figure 2 The shown three-dimensional picture of the shaft threading tool after the shaft is threaded. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0039] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0041] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0042] like Figures 1 to 18 As shown, the embodiment of the utility model provides a fork rod welding device for welding various workpieces of the fork rod 1. The fork rod 1 includes three workpieces: a rectangular tube 11, a short shaft sleeve 12, and a long shaft sleeve 13. Figure 1 As shown, in this embodiment, there are two rectangular tubes 11 and four short shaft sleeves 12, two of which are installed at one end of the two rectangular tubes, and the other two are installed in the middle of the two rectangular tubes 11. There is one long shaft sleeve 13, which is installed at the other end of the two rectangular tubes 11. Of course, in other embodiments, the rectangular tubes, short shaft sleeves, and long shaft sleeves can be other numbers and other connection methods.

[0043] The fork rod welding equipment includes a line MES (Manufacturing Execution System), a handling robot, an axis threading tooling system PLC (Programmable Logic Controller), an axis threading tooling, and a welding robot.

[0044] Line MES is used to assign tasks to handling robots and welding robots. The specific implementation scheme of line MES can adopt existing technology and be set and adjusted according to the task situation, which will not be described in detail here.

[0045] The handling robot is used to receive tasks issued by the line MES and position each workpiece at the corresponding position of the shaft threading tooling. The welding robot is used to receive tasks issued by the line MES and perform automatic positioning welding of the fork rod. In this embodiment, the handling robot and the welding robot adopt an integrated handling and welding robot, and the handling and welding operations are completed by the same device, which can save costs and facilitate control. Of course, in other embodiments, the handling and welding operations can be completed by two robots respectively. The specific structure of the robot can adopt existing technology, which will not be repeated here.

[0046] The PLC of the shaft threading tooling system is used to control the shaft threading tooling to automatically thread the shaft after detecting the signal that the parts are in place, and to control the shaft threading tooling to release the welded workpiece after receiving the signal that the positioning welding is completed. The specific structure of the PLC of the shaft threading tooling system can adopt the existing technology and will not be described in detail here.

[0047] like Figure 2 , Figure 3 As shown, in this embodiment, the shaft threading tool 2 is used to complete the shaft threading and release the welded workpiece under the control of the shaft threading tool system PLC. In this embodiment, the shaft threading tool 2 includes a shaft threading platform 21 and a rectangular tube positioning mechanism 22, a short shaft sleeve positioning mechanism 23, a long shaft sleeve positioning mechanism 24, a rectangular tube tightening mechanism, a long shaft sleeve expansion mechanism 26, a long shaft sleeve slide mechanism 27, a short shaft sleeve expansion mechanism 28, a short shaft sleeve slide mechanism 29, and a moving mechanism 30 fixed to the shaft threading platform 21.

[0048] like Figure 4 As shown, in this embodiment, the shaft-penetrating platform 21 includes a support plate 211 for supporting other components and a frame-shaped seat body 212 located below the support plate 211 .

[0049] like Figure 5 As shown, in this embodiment, the rectangular tube positioning mechanism 22 is used to position the rectangular tube 11 at a predetermined position and to clamp the rectangular tube 11. There are two sets of rectangular tube positioning mechanisms 22, which are respectively located on the longitudinal front and rear sides of the shaft-threading platform 21, and are used to position the two rectangular tubes 11 respectively. In this embodiment, each set of rectangular tube positioning mechanisms 22 includes two positioning mechanisms arranged along the longitudinal direction of the rectangular tube 11, and each positioning mechanism includes two clamping surfaces 221 and 222 that are arranged oppositely and can move relative to each other. One of the clamping surfaces is moved by a driving mechanism (such as a cylinder), so that the clamping surfaces move relative to each other to clamp the rectangular tube 11.

[0050] like Figure 6 , Figure 7 As shown, in this embodiment, the short shaft sleeve positioning mechanism 23 is used to position the short shaft sleeve 12 at a predetermined position. There are four sets of short shaft sleeve positioning mechanisms 23, all located on both sides of the longitudinal center line and adjacent to the longitudinal center line, two of which are located in the middle of the horizontal direction, and the other two are located on the right side of the horizontal direction. Each set of short shaft sleeve positioning mechanism 23 includes a vertical positioning seat 231 and an axial positioning seat 232. The axial positioning seat 232 is closer to the longitudinal center line and can move forward and backward. It is provided with an insertion head 233 to be inserted into the inner hole of the short shaft sleeve 12 to position the short shaft sleeve 12 in the front and rear direction. The vertical positioning seat 311 and the axial positioning seat 312 are preferably driven by a cylinder.

[0051] like Figure 8 As shown, in this embodiment, the long shaft sleeve positioning mechanism 24 is used to position the long shaft sleeve 13 at a predetermined position. There is only one long shaft sleeve positioning mechanism 24, which is located on the left side in the horizontal direction. The long shaft sleeve positioning mechanism 24 is provided with two arc-shaped bearing members 241 arranged in the front-to-back direction for bearing the long shaft sleeve 13.

[0052] like Fig. 9 , 10As shown, in this embodiment, the rectangular tube tightening mechanism is used to tighten the rectangular tube 11 from both ends of the rectangular tube 11. There are two sets of rectangular tube tightening mechanisms, which are respectively located on the longitudinal front and rear sides of the shaft-threading platform 21, and are used to tighten the two rectangular tubes 11 respectively. Each set of rectangular tube tightening mechanisms includes a limiter 251 and a pusher 252, the limiter 251 is located on the right side, and the pusher 252 is located on the left side. When tightening, the pusher 252 pushes the rectangular tube 11 to the right to press against the limiter 251 to maintain the consistency of the longitudinal reference position. The pusher 252 is preferably driven by a servo motor.

[0053] like Fig.11 As shown, in this embodiment, the long shaft sleeve expansion mechanism 26 is fixed on the long shaft sleeve slide mechanism 27, and the long shaft sleeve slide mechanism 27 is used to drive the long shaft sleeve expansion mechanism 26 to move longitudinally in the front-back direction. There is only one set of long shaft sleeve slide mechanism 27, which is located on the left side in the horizontal direction and is connected to the two long shaft sleeve expansion mechanisms 26 to drive the two long shaft sleeve expansion mechanisms 26 to move together at the same time. The long shaft sleeve slide mechanism 27 is preferably driven by a servo motor.

[0054] like Fig.12 , Fig.13 As shown, in this embodiment, the long shaft sleeve expansion pin mechanism 26 is used to insert into the inner hole of the long shaft sleeve 13, and expands and tightens through the long shaft sleeve expansion pin 261 to ensure the spatial position of the long shaft sleeve 13. There are two sets of long shaft sleeve expansion pin mechanisms 26, which are respectively located at the front and rear ends of the left side in the horizontal direction (respectively as shown in FIG. Fig.12 , Fig.13 As shown), it is used to respectively cooperate with the two ends of the inner hole of the long shaft sleeve 13. The long shaft sleeve expansion mechanism 26 is preferably driven by a cylinder.

[0055] like Fig.14 , Fig.15 As shown, in this embodiment, the short shaft sleeve expansion mechanism 28 is fixed on the short shaft sleeve slide mechanism 29, and the short shaft sleeve slide mechanism 29 is used to drive the short shaft sleeve expansion mechanism 28 to move. There are four sets of short shaft sleeve slide mechanisms 29, all located on the front and rear sides in the longitudinal direction, and two sets are located in the middle of the transverse direction (such as Fig.14 As shown), the other two sets are located on the right side (as shown Fig.15 ), respectively corresponding to each short shaft sleeve expansion pin mechanism 28. The short shaft sleeve slide mechanism 29 is preferably driven by a servo motor.

[0056] like Fig.14 , Fig.15 As shown, in this embodiment, the short shaft sleeve expansion pin mechanism 28 is used to insert into the inner hole of the short shaft sleeve 12 under the movement of the short shaft sleeve slide mechanism 29, and the short shaft sleeve expansion pin 281 is expanded to ensure the spatial position of the short shaft sleeve 12. There are four sets of short shaft sleeve expansion pin mechanisms 28, all located at the front and rear sides in the longitudinal direction, and two sets are located in the middle of the transverse direction (such as Fig.14 The other two sets are located on the right side (as shown in Fig.15The short shaft sleeve expansion mechanism 28 is preferably driven by a cylinder.

[0057] like Fig.16 As shown, in this embodiment, the rectangular tube positioning mechanism 22 is fixed to the moving mechanism 30, and the moving mechanism 30 is used to drive the rectangular tube 11 to move through the long shaft sleeve 13 after the long shaft sleeve expansion mechanism 26 is inserted into the inner hole of the long shaft sleeve 13, and further drive the rectangular tube 11 to move to contact the edge of the short shaft sleeve 12, and drive the rectangular tube 11 to move through the short shaft sleeve 12 after the short shaft sleeve expansion mechanism 28 is inserted into the inner hole of the short shaft sleeve 12. The moving mechanism 30 is preferably driven by a servo motor. There are two sets of moving mechanisms 30, both located in the middle of the horizontal direction and located at the front and rear sides of the longitudinal direction respectively.

[0058] like Figure 2 , Fig.17 , Fig.18 As shown, the fork rod welding method using the above-mentioned fork rod welding equipment includes: the handling robot receives the task issued by the line body MES, and positions each workpiece at the corresponding position of the axis threading tooling; after the axis threading tooling system PLC detects the part arrival signal, it automatically controls the axis threading tooling to start the full-process axis threading action; after the fork rod is automatically threaded, the axis threading tooling system PLC sends a designated axis threading completion signal to the line body MES, and the line body MES automatically issues a task to the welding robot to perform automatic positioning welding of the fork rod; after the axis threading tooling system PLC receives the positioning welding completion signal, the axis threading tooling system PLC controls the axis threading tooling to release the welded workpiece.

[0059] In this embodiment, the handling robot receives the task issued by the line body MES and positions each workpiece at the corresponding position of the shaft threading tooling, including: the handling robot receives the task issued by the line body MES, automatically grabs the short shaft sleeve from the material tray and places it on the short shaft sleeve positioning mechanism, automatically grabs the long shaft sleeve from the material tray and places it on the long shaft sleeve positioning mechanism, and automatically grabs the rectangular tube from the material frame and places it on the rectangular tube positioning mechanism.

[0060] In this embodiment, the shaft threading action includes: the rectangular tube 11, the short shaft sleeve 12, and the long shaft sleeve 13 have been positioned at predetermined positions by the rectangular tube positioning mechanism 22, the short shaft sleeve positioning mechanism 23, and the long shaft sleeve positioning mechanism 24 respectively (the short shaft sleeve 12 is first placed on the vertical positioning seat 231, and then the axial positioning seat 232 moves toward the short shaft sleeve 12, and its insertion head 233 is inserted into the inner hole of the short shaft sleeve 12, and then the vertical positioning seat 231 moves downward); the rectangular tube tightening mechanism pushes the rectangular tube 11 from both ends of the rectangular tube 11 to maintain the consistency of the longitudinal reference position, and the rectangular tube positioning mechanism 22 then clamps the rectangular tube 11 Tighten; the long shaft sleeve slide mechanism 27 drives the two long shaft sleeve expansion pin mechanisms 26 to move relative to each other, so that the long shaft sleeve expansion pin 261 is inserted into the inner hole of the long shaft sleeve 13, and is expanded to ensure the spatial position of the long shaft sleeve 13; the moving mechanism 30 drives the rectangular tube 11 to pass through the long shaft sleeve 13, and moves the rectangular tube 11 to contact the edge of the short shaft sleeve 12; the short shaft sleeve slide mechanism 29 drives the short shaft sleeve expansion pin mechanism 28 to move, so that the short shaft sleeve expansion pin 281 is inserted into the inner hole of the short shaft sleeve 12, and is expanded to ensure the spatial position of the short shaft sleeve 12; the moving mechanism 30 moves the rectangular tube 11 through the short shaft sleeve 12 to complete the automatic shaft threading action.

[0061] In this embodiment, the shaft threading tooling releases the welded workpiece including: the long shaft sleeve expansion pin 261 and the short shaft sleeve expansion pin 281 of the long shaft sleeve expansion pin mechanism 26 and the short shaft sleeve expansion pin mechanism 28 are both opened, and the long shaft sleeve slide mechanism 27 and the short shaft sleeve slide mechanism 29 both slide out.

[0062] Compared with the prior art, the shaft-threading tool and fork rod welding equipment for fork rod welding in this embodiment have the following advantages:

[0063] (1) A long shaft sleeve expansion pin mechanism is provided to be inserted into the inner hole of the long shaft sleeve, and the long shaft sleeve expansion pin is expanded and tightened to ensure the spatial position of the long shaft sleeve, and a short shaft sleeve expansion pin mechanism is provided to be inserted into the inner hole of the short shaft sleeve, and the short shaft sleeve expansion pin is expanded and tightened to ensure the spatial position of the short shaft sleeve, which can significantly improve the positioning accuracy and operation efficiency during the fork rod welding process;

[0064] (2) Use a handling robot to automatically grab and load materials, replacing the traditional manual lifting and loading process of the fork rod of a scissor lift truck;

[0065] (3) Use PLC to automatically control the special fully automatic fixture to realize the automatic threading of the fork rod rectangular tube, replacing the manual threading of the simple fixture;

[0066] (4) Use robot automatic positioning welding to replace manual positioning welding after shaft penetration.

[0067] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A shaft threading tool for fork rod welding, wherein the fork rod comprises three workpieces: a rectangular tube, a short shaft sleeve, and a long shaft sleeve, characterized in that: The shaft threading tooling includes a rectangular tube positioning mechanism, a short shaft sleeve positioning mechanism, a long shaft sleeve positioning mechanism, a long shaft sleeve expansion pin mechanism, and a short shaft sleeve expansion pin mechanism. The rectangular tube positioning mechanism, the short shaft sleeve positioning mechanism, and the long shaft sleeve positioning mechanism are used to respectively position the rectangular tube, the short shaft sleeve, and the long shaft sleeve at predetermined positions; the long shaft sleeve expansion pin mechanism is used to insert into the inner hole of the long shaft sleeve, and expand and tighten through the long shaft sleeve expansion pin to ensure the spatial position of the long shaft sleeve; the short shaft sleeve expansion pin mechanism is used to insert into the inner hole of the short shaft sleeve, and expand and tighten through the short shaft sleeve expansion pin to ensure the spatial position of the short shaft sleeve.

2. The shaft threading tool as claimed in claim 1, characterized in that: The rectangular tube positioning mechanism includes two positioning mechanisms arranged along the longitudinal direction of the rectangular tube, each positioning mechanism includes two clamping surfaces arranged opposite to each other and capable of relative movement, and one of the clamping surfaces is moved by a driving mechanism so that the clamping surfaces move relatively to clamp the rectangular tube.

3. The shaft threading tool as claimed in claim 1, characterized in that: The short shaft sleeve positioning mechanism includes a vertical positioning seat and an axial positioning seat. The axial positioning seat is closer to the longitudinal center line and can move forward and backward. An insertion head is provided to insert into the inner hole of the short shaft sleeve to position the short shaft sleeve in the forward and backward direction.

4. The shaft threading tool as claimed in claim 1, characterized in that: The long shaft sleeve positioning mechanism is provided with two arc-shaped bearing members arranged along the front-rear direction for bearing the long shaft sleeve.

5. The shaft threading tool as claimed in claim 1, characterized in that: The shaft threading tool also includes a shaft threading platform, a rectangular tube pushing mechanism, a long shaft sleeve slide mechanism, a short shaft sleeve slide mechanism, and a moving mechanism. The rectangular tube positioning mechanism, the short shaft sleeve positioning mechanism, the long shaft sleeve positioning mechanism, the long shaft sleeve expansion mechanism, the short shaft sleeve expansion mechanism, the rectangular tube pushing mechanism, the long shaft sleeve slide mechanism, the short shaft sleeve slide mechanism, and the moving mechanism are located on the shaft threading platform; the rectangular tube pushing mechanism is used to push the rectangular tube from both ends of the rectangular tube; the rectangular tube positioning mechanism is also used to clamp the rectangular tube; the long shaft sleeve expansion mechanism is fixed on the long shaft sleeve slide mechanism, and the long shaft sleeve slide mechanism is used to drive the long shaft sleeve expansion mechanism to move, and the The long shaft sleeve expansion pin mechanism is used to insert the long shaft sleeve into the inner hole of the long shaft sleeve under the drive of the long shaft sleeve slide mechanism; the short shaft sleeve expansion pin mechanism is fixed on the short shaft sleeve slide mechanism, and the short shaft sleeve slide mechanism is used to drive the short shaft sleeve expansion pin mechanism to move, and the short shaft sleeve expansion pin mechanism is used to insert the short shaft sleeve inner hole under the drive of the short shaft sleeve slide mechanism; the rectangular tube positioning mechanism is fixed to the moving mechanism, and the moving mechanism is used to drive the rectangular tube to move through the long shaft sleeve after the long shaft sleeve expansion pin mechanism is inserted into the inner hole of the long shaft sleeve, and further drive the rectangular tube to move until it contacts the edge of the short shaft sleeve, and drive the rectangular tube to move through the short shaft sleeve after the short shaft sleeve expansion pin mechanism is inserted into the inner hole of the short shaft sleeve.

6. The shaft threading tool as claimed in claim 5, characterized in that: The shaft-penetrating platform comprises a support plate for supporting other components and a frame-shaped seat body located below the support plate.

7. The shaft threading tool as claimed in claim 5, characterized in that: The rectangular tube pushing mechanism comprises a limiting member and a pushing member, and the pushing member can push the rectangular tube to the right until it hits the limiting member.

8. The shaft threading tool as claimed in claim 5, characterized in that: In the fork rod, there are two rectangular tubes and four short shaft sleeves, two of which are installed at one end of the two rectangular tubes, and the other two are installed in the middle of the two rectangular tubes, and one long shaft sleeve is installed at the other end of the two rectangular tubes; there are two sets of rectangular tube positioning mechanisms, which are respectively located on the longitudinal front and rear sides of the shaft-threading platform, and are used to position the two rectangular tubes respectively; there are four sets of short shaft sleeve positioning mechanisms, all of which are located on both sides of the longitudinal center line and adjacent to the longitudinal center line, two of which are located in the horizontal middle, and the other two are located on the horizontal right side; there is only one set of long shaft sleeve positioning mechanisms, which is located on the horizontal left side; There are two sets of rectangular tube pushing mechanisms, which are respectively located on the longitudinal front and rear sides of the shaft-threading platform, and are used to push the two rectangular tubes respectively; there are two sets of long shaft sleeve expansion and pinning mechanisms, which are respectively located on the front and rear ends of the left side in the horizontal direction, and are used to cooperate with the two ends of the inner hole of the long shaft sleeve respectively; there are four sets of short shaft sleeve expansion and pinning mechanisms, all of which are located on the longitudinal front and rear sides, two of which are located in the horizontal middle, and the other two are located on the horizontal right side; there are four sets of short shaft sleeve slide mechanisms, which correspond to each short shaft sleeve expansion and pinning mechanism respectively; there are two sets of moving mechanisms, both of which are located in the horizontal middle, and are respectively located on the longitudinal front and rear sides.

9. The shaft threading tool as claimed in claim 8, characterized in that: There is only one set of long shaft sleeve slide mechanism, which is located on the left side in the horizontal direction and is connected to the two long shaft sleeve expansion pin mechanisms to drive the two long shaft sleeve expansion pin mechanisms to move together at the same time.

10. A fork rod welding device, the fork rod comprising three workpieces: a rectangular tube, a short shaft sleeve, and a long shaft sleeve, characterized in that: It comprises the shaft threading tool as described in any one of claims 1 to 9.

Images