A tray welding tool

Abstract

The utility model relates to a kind of tray welding tool, comprising: welding base, is equipped with several for inserting welding gun welding groove;First positioning device, be located in one end of welding base, for fixed first end frame;End frame positioning device, be located in one end of welding base, for fixed second end frame;Side frame positioning device, be located in both sides of welding base, for fixed side frame;End movable positioning device, be located in both sides of the other end of welding base, for fixed the both ends of end crossbeam;Crossbeam pressing device, be located on welding base, and located the both sides of connecting crossbeam.The welding tool realizes the positioning of end frame by end frame positioning device, realizes the positioning of side frame by side frame positioning device, and realizes the positioning between end crossbeam and side frame by end movable positioning device, simultaneously without affecting welding, realizes the positioning of crossbeam by crossbeam pressing device, and the positioning precision of whole is high, pressing is reliable, labor-saving, time-saving.

Description

Technical Field

[0001] This utility model relates to a welding fixture, and more particularly to a pallet welding fixture. Background Technology

[0002] Pallets have many components, which need to be clamped using tooling during welding. The tooling is mounted on a positioner, which works with a robotic arm for automated welding. For example, CN218745918U discloses a pallet frame assembly and welding tooling, which mainly uses elbow clamps to clamp the pallet. The elbow clamps need to be operated manually, so the pallet is fixed for a long time, which affects efficiency. At the same time, the pressure of the elbow clamps is uncontrollable. Utility Model Content

[0003] To solve the above problems, this utility model provides a pallet frame assembly and welding fixture, the specific technical solution of which is as follows: A pallet welding fixture includes: a welding base with a plurality of welding grooves for inserting welding guns; a first positioning device located at one end of the welding base for fixing a first end frame; an end frame positioning device located at one end of the welding base for fixing a second end frame; side frame positioning devices located on both sides of the welding base for fixing side frames; end movable positioning devices located on both sides of the other end of the welding base for fixing both ends of an end beam; and a beam clamping device located on the welding base and on both sides of the connecting beam.

[0004] Preferably, the first positioning device includes: a first side baffle, disposed on the welding base, for abutting against the side of the first inner square tube of the first end frame; a first positioning seat, disposed on one side of the first side baffle, for abutting against the bottom of the first end frame; a first rotary clamping cylinder, disposed on the welding base; a first inner clamping column, disposed on the first clamping rod of the first rotary clamping cylinder, and disposed opposite to the first inner square tube; a first outer clamping column, disposed on the first clamping rod, and disposed opposite to the first outer square tube of the first end frame; a first side-pressing cylinder, disposed on the welding base, for abutting against the first outer square tube, so that the first outer square tube and the first inner square tube are pressed together by the first side baffle; a first positioning column, with a first positioning pin at the top, the first positioning pin being inserted into the first connecting holes at both ends of the first outer square tube; and a first end baffle, disposed on the welding base, for abutting against the first mating inclined surface of the first inner square tube and the first outer square tube.

[0005] Preferably, the end frame positioning device includes: a second positioning seat with a second inner fixing groove on the top for positioning the first inner square tube; a second rotary clamping cylinder located on one side of the second positioning seat; a second clamping column located on the second clamping rod of the second rotary clamping cylinder and respectively positioned opposite to the first outer square tube and the first inner square tube; a second positioning platform located at both ends of the second end frame; and a second positioning pin located on the second positioning platform for insertion into the first connecting hole.

[0006] Preferably, the side frame positioning device includes: a third positioning seat with a third positioning pin for supporting and positioning the second outer square tube; a third support seat located on both sides of the welding base for supporting the second outer square tube; a fourth positioning seat located on both sides of the welding base for supporting the two ends of the connecting beam and the end beam, wherein a fourth positioning platform and a fifth positioning platform are respectively located on both sides of the fourth positioning seat, and a fourth positioning pin is also provided on the fourth positioning platform; and a third rotary pressing cylinder located on one side of the fourth positioning seat and respectively opposite to the fourth positioning platform and the fifth positioning platform.

[0007] Furthermore, the side frame positioning device also includes a second side pressure cylinder, which is located on both sides of the welding base and is positioned opposite to the second outer square tube.

[0008] Preferably, the end movable positioning device includes: a first lifting cylinder disposed on the welding base; a first telescopic cylinder disposed on the first lifting cylinder; a first movable fixing seat disposed on the first telescopic cylinder; and a first movable pin disposed on the first movable fixing seat for inserting into the end crossbeam and the first inner square tube.

[0009] Preferably, the beam clamping device includes: a beam rotation clamping cylinder, disposed on the welding base and located on both sides of the connecting beam and the end beam; and a beam positioning column, disposed on the welding base, for abutting against the underside of the connecting beam and the end beam.

[0010] Preferably, it further includes: a stripping device, which is disposed on both sides of the welding base and is arranged opposite to the side frame.

[0011] Furthermore, the stripping device includes: a stripping cylinder disposed on both sides of the welding base; and a stripping plate disposed on the stripping cylinder and in an L-shape, with one end of the stripping plate located below the side frame.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The pallet frame assembly and welding fixture provided by this utility model achieves the positioning of the end frame through the end frame positioning device, the positioning of the side frame through the side frame positioning device, and the positioning between the end beam and the side frame through the end movable positioning device, without affecting the welding. The beam is positioned through the beam clamping device. The overall positioning accuracy is high, the clamping is reliable, and it saves effort and time. Attached Figure Description

[0013] Figure 1 This is a front view of this application; Figure 2 This is a perspective view of this application; Figure 3 This is a front view of the clamping tray of this application; Figure 4 This is a perspective view of the clamping tray of this application; Figure 5 This is a schematic diagram of welding from the back of the welding torch; Figure 6 This is a schematic diagram of the structure of the first positioning device; Figure 7 This is a cross-sectional view of the first positioning device; Figure 8 This is a schematic diagram of the end frame positioning device; Figure 9 This is a schematic diagram of the side frame positioning device; Figure 10 This is a schematic diagram of the end-positioning device. Figure 11 This is a schematic diagram of the crossbeam clamping device; Figure 12 This is a schematic diagram of the unloading device; Figure 13 This is a front view of the tray; Figure 14 This is the rear view of the tray; Figure 15 This is a schematic diagram of the first end frame. Detailed Implementation

[0014] The present invention will now be further described with reference to the accompanying drawings.

[0015] like Figures 1 to 15As shown, a pallet welding fixture includes a welding base 1, a first positioning device 2, an end frame positioning device 3, a side frame positioning device 4, an end movable positioning device 5, and a crossbeam clamping device 6. The welding base 1 is provided with a plurality of welding grooves 11 for inserting welding guns. The first positioning device 2 is fixed at one end of the welding base 1 to fix the first end frame 90. The end frame positioning device 3 is fixed at one end of the welding base 1 to fix the second end frame 91. The side frame positioning device 4 is fixed on both sides of the welding base 1 to fix the side frames 92. The end movable positioning device 5 is fixed on both sides of the other end of the welding base 1 to fix the two ends of the end crossbeam 94. The crossbeam clamping device 6 is fixed on the welding base 1 and located on both sides of the connecting crossbeam 93.

[0016] The first end frame 90 and the second end frame 91 have the same structure. The first end frame 90 is used to prepare for the overall welding of the pallet. After welding, the first end frame 90 is used as the second end frame 91, which can improve the positioning accuracy of the entire frame, ensure the assembly size, and make the welding and clamping of the end frames in the overall structure simpler, thereby improving efficiency.

[0017] like Figures 13 to 15 As shown, the pallet includes a second end frame 91, a side frame 92, a connecting beam 93, and an end beam 94. The side frame 92 and the second end frame 91 form a U-shaped frame. The two ends of the connecting beam 93 and the end beam 94 are respectively connected to the two side frames 92. A fourth connecting hole 934 is provided diagonally at both ends of the connecting beam 93, and the fourth connecting hole 934 is coaxially aligned with the third connecting hole on the second inner square tube 922. Both the first end frame 90 and the second end frame 91 include a first outer square tube 911 and a first inner square tube 912 welded together. The width and thickness of the first outer square tube 911 are greater than those of the first inner square tube 912; that is, the rectangular cross-section of the first outer square tube 911 is larger than that of the first inner square tube 912. The side frame 92 includes a second outer square tube 921 and a second inner square tube 922 welded together. The structure of the second outer square tube is the same as that of the first outer square tube 911, and the structure of the second inner square tube 922 is the same as that of the first inner square tube 912. The two ends of the end beam 94 are symmetrically arranged at the sixth connecting hole 946, and the sixth connecting hole 946 is coaxially arranged with the fifth connecting hole of the second inner square tube 922.

[0018] like Figure 6 and Figure 7As shown, the first positioning device 2 includes a first side baffle 21, a first positioning seat 22, a first rotary clamping cylinder 23, a first inner clamping column 24, a first outer clamping column 25, a first side clamping cylinder 26, a first positioning column 28, and a first end baffle 27. The first side baffle 21 is fixed on the welding base 1 and three are evenly spaced. The first side baffle 21 is used to abut against the side of the first inner square tube 912 of the first end frame 90. The first positioning seat 22 is fixed on the welding base 1 and located on one side of the first side baffle 21. It is used to abut against the bottom of the first end frame 90. The first positioning seat 22 supports the first end frame 90. The first rotary clamping cylinder 23 is fixed on the welding base 1 and located on one side of the first positioning seat 22. The first rotary clamping cylinder 23 corresponds one-to-one with the first positioning seat 22. The first inner clamping column 24 and the first outer clamping column 25 are both fixed on the first clamping rod 231 of the first rotary clamping cylinder 23 and are respectively arranged opposite to the first inner square tube 912 and the first outer square tube 911. The first side clamping cylinder 26 is fixed on the welding base 1 and is arranged horizontally. The first side clamping cylinder 26 is used to press against the first outer square tube 911 so that the first outer square tube 911 and the first inner square tube 912 are pressed together by the first side baffle 21. There are two first side clamping cylinders 26, located between two adjacent first rotary clamping cylinders 23. The first positioning pins 28 are symmetrically arranged on the welding base 1. The top of the first positioning pins 28 is provided with a first positioning pin 281. The first positioning pin 281 is used to insert into the first connecting holes 913 at both ends of the first outer square tube 911. The first end baffle 27 is symmetrically fixed on the welding base 1 and located on one side of the first positioning pins 28. The first end baffle 27 is used to abut against the first mating slope 914 of the first outer square tube 911 and the first inner square tube 912. Both the first outer square tube 911 and the first inner square tube 912 are placed on the first positioning seat 22. The mating slopes of the first inner square tube 912 and the first inner square tube 912 abut against the first end baffle 27. One side of the first inner square tube 912 abuts against the first side baffle 21. The first positioning pin 281 is used to insert into the first connecting holes 913 at both ends of the outer square tube. The first side pressure cylinder 26 is activated to press the first inner square tube 912 and the first inner square tube 912 together. Then the first rotary pressing cylinder 23 is activated to press the first outer square tube 911 and the first inner square tube 912 onto the first positioning seat 22 through the first outer pressing column 25 and the first inner pressing column 24 respectively.

[0019] like Figure 8As shown, the end frame positioning device 3 includes a second positioning seat 31, a second rotary clamping cylinder 32, a second clamping column 33, a second positioning platform 34, and a second positioning pin 35. The second positioning seat 31 is fixed on the welding base 1. The top of the second positioning seat 31 is provided with a second inner fixing groove 311 for positioning the first inner square tube 912. The top of the second positioning seat 31 is stepped. The second rotary clamping cylinder 32 is installed on the welding base 1 and is located on one side of the second positioning seat 31, corresponding to the second positioning seat 31 one by one. The second clamping rod 321 of the second rotary clamping cylinder 32 is connected to the second clamping column 33. There are two second clamping columns 33 with the same height, which are respectively arranged opposite to the first outer square tube 911 and the first inner square tube 912, for pressing the first outer square tube 911 and the first inner square tube 912 onto the second positioning seat 31. The second positioning platform 34 is mounted on the welding base 1 and located at both ends of the second end frame 91, and its top is connected to the second positioning pin 35, which is used to insert into the first connecting hole 913 of the first outer square tube 911.

[0020] like Figure 9 As shown, the side frame positioning device 4 includes a third positioning seat 41, a third support seat 42, a fourth positioning seat 43, and a third rotary pressing cylinder 46. The third positioning seat 41 is fixed on the welding base 1 and located on both sides of the welding base 1, and is arranged opposite to both ends of the second outer square tube 921. The top of the third positioning seat 41 is provided with a third positioning pin 411. The third positioning pin 411 is arranged opposite to the second connecting holes 923 at both ends of the second outer square tube 921, and is used to insert into the second connecting holes 923 to realize the positioning of the second outer square tube 921. The third positioning seat 41 supports the second outer square tube 921. The third support base 42 is symmetrically fixed on both sides of the welding base 1 to support the second outer square tube 921; the fourth positioning base 43 is fixed on both sides of the welding base 1 to support the two ends of the connecting crossbeam 93 and the end crossbeam 94. The fourth positioning base 43 is provided with a fourth positioning platform 434 and a fifth positioning platform 435 on both sides. The fourth positioning platform 434 and the fifth positioning platform 435 are used to support the second inner square tube 922. The fourth positioning platform 434 is also provided with a fourth positioning pin 436, which is inserted into the second connecting hole of the second inner square tube 922 and the fourth connecting hole 934 of the connecting crossbeam 93; the third rotary pressing cylinder 46 is fixed on the welding base 1 and located on one side of the fourth positioning base 43. There are two third rotary pressing cylinders 46, which are respectively arranged opposite to the fourth positioning platform 434 and the fifth positioning platform 435.

[0021] To improve the reliability of positioning, the side frame positioning device 4 also includes a second side pressure cylinder 48, which is symmetrically fixed on both sides of the welding base 1 and is arranged opposite to the second outer square tube 921.

[0022] like Figure 10As shown, the end movable positioning device 5 includes a first lifting cylinder 51, a first telescopic cylinder 52, a first movable fixed seat 53, and a first movable pin 54. The first lifting cylinder 51 is vertically fixed on the welding base 1 and moves vertically. The piston rod of the first lifting cylinder 51 is connected to the first telescopic cylinder 52, which is horizontally positioned. The first movable fixed seat 53 is mounted on the piston rod of the first telescopic cylinder 52. The first movable fixed seat 53 is L-shaped and connected to the first movable pin 54, which is vertically positioned. The first movable pin 54 is used to insert into the end crossbeam 94 and the first inner square tube 912. Both the first lifting cylinder 51 and the first telescopic cylinder 52 are multi-axis cylinders. During positioning, the first telescopic cylinder 52 extends first, and the first lifting cylinder 51 is in the retracted state, so that the first movable pin 54 moves to the sixth connecting hole 946 below the end crossbeam 94. Then, the first lifting cylinder 51 drives the first movable pin 54 to insert into the sixth connecting hole 946 and the fifth connecting hole of the second inner square tube 922, realizing the positioning and support between the end crossbeam 94 and the second inner square tube 922. After the welding around the end crossbeam 94 is completed, the first lifting cylinder 51 descends first, and then the first telescopic cylinder 52 retracts to give way to the welding torch, and the welding torch continues to weld.

[0023] like Figure 11 As shown, the crossbeam clamping device 6 includes a crossbeam rotary clamping cylinder 61 and a crossbeam positioning column 62. The crossbeam rotary clamping cylinder 61 is fixed on the welding base 1 and located on both sides of the connecting crossbeam 93 and the end crossbeam 94. The crossbeam positioning column 62 is fixed on the welding base 1 and located on one side of the crossbeam rotary clamping cylinder 61, used to abut against the bottom of the connecting crossbeam 93 and the end crossbeam 94. The crossbeam rotary clamping cylinder 61 and the crossbeam positioning column 62 correspond one-to-one, realizing the positioning of the crossbeam from both sides of the connecting crossbeam 93 and the end crossbeam 94.

[0024] To facilitate the detachment of the tray from the positioning pins after welding and enable automatic material transfer, a material removal device 8 is also included. The material removal device 8 is located on both sides of the welding base 1 and is positioned opposite the side frame 92. Specifically, the material removal device 8 includes a material removal cylinder 81 and a material removal plate 82. The material removal cylinder 81 is symmetrically fixed on both sides of the welding base 1; it is a multi-axis cylinder and is vertically arranged. The material removal plate 82 is fixed to the piston rod of the material removal cylinder 81 and is L-shaped, with one end located below the side frame 92. When the material removal cylinder 81 rises, the material removal plate 82 presses against the side frame 92, lifting the tray upwards, causing the side frame 92 and the second end frame 91 to separate from the positioning pins, facilitating tray removal.

[0025] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.

Claims

1. A pallet welding fixture, characterized in that, include: The welding base (1) is provided with several welding slots (11) for inserting welding guns; The first positioning device (2) is located at one end of the welding base (1) and is used to fix the first end frame (90). An end frame positioning device (3) is provided at one end of the welding base (1) for fixing the second end frame (91). Side frame positioning device (4) is provided on both sides of the welding base (1) for fixing the side frame (92). An end movable positioning device (5) is provided on both sides of the other end of the welding base (1) for fixing the two ends of the end crossbeam (94); and A beam clamping device (6) is provided on the welding base (1) and located on both sides of the connecting beam (93).

2. The pallet welding fixture according to claim 1, characterized in that, The first positioning device (2) includes: The first side baffle (21) is provided on the welding base (1) and is used to abut against the side of the first inner square tube (912) of the first end frame (90); The first positioning seat (22) is located on one side of the first side baffle (21) and is used to abut against the bottom of the first end frame (90); The first rotary clamping cylinder (23) is mounted on the welding base (1); The first inner clamping column (24) is disposed on the first clamping rod (231) of the first rotary clamping cylinder (23) and is disposed opposite to the first inner square tube (912); The first outer clamping column (25) is disposed on the first clamping rod (231) and is disposed opposite to the first outer square tube (911) of the first end frame (90); The first side-pressure cylinder (26) is disposed on the welding base (1) and is used to press against the first outer square tube (911) so that the first outer square tube (911) and the first inner square tube (912) are pressed together by the first side baffle (21); The first positioning post (28) has a first positioning pin (281) at its top, and the first positioning pin (281) is used to be inserted into the first connecting holes (913) at both ends of the first outer square tube (911); and The first end baffle (27) is provided on the welding base (1) and is used to abut against the first mating slope (914) of the first outer square tube (911) and the first inner square tube (912).

3. The pallet welding fixture according to claim 1, characterized in that, The end frame positioning device (3) includes: The second positioning seat (31) has a second inner fixing groove (311) on the top for positioning the first inner square tube (912); The second rotary clamping cylinder (32) is located on one side of the second positioning seat (31); The second pressing column (33) is disposed on the second pressing rod (321) of the second rotary pressing cylinder (32), and is respectively disposed opposite to the first outer square tube (911) and the first inner square tube (912); The second positioning platform (34) is located at both ends of the second end frame (91); and The second positioning pin (35) is provided on the second positioning platform (34) and is used to insert into the first connecting holes (913) at both ends of the first outer square tube (911).

4. The pallet welding fixture according to claim 1, characterized in that, The side frame positioning device (4) includes: The third positioning seat (41) is provided with a third positioning pin (411) for supporting and positioning the second outer square tube (921). The third support (42) is located on both sides of the welding base (1) and is used to support the second outer square tube (921). The fourth positioning seat (43) is located on both sides of the welding base (1) and is used to support the two ends of the connecting crossbeam (93) and the end crossbeam (94). The fourth positioning seat (43) is provided with a fourth positioning platform (434) and a fifth positioning platform (435) for supporting the second inner square tube (922) respectively. The fourth positioning platform (434) is also provided with a fourth positioning pin (436). The third rotary clamping cylinder (46) is located on one side of the fourth positioning seat (43) and is respectively positioned opposite to the fourth positioning platform (434) and the fifth positioning platform (435).

5. A pallet welding fixture according to claim 4, characterized in that, The side frame positioning device (4) further includes: a second side pressure cylinder (48), which is located on both sides of the welding base (1) and is arranged opposite to the second outer square tube (921).

6. A pallet welding fixture according to any one of claims 1 to 5, characterized in that, The end-positioning device (5) includes: The first lifting cylinder (51) is mounted on the welding base (1); The first telescopic cylinder (52) is mounted on the first lifting cylinder (51); The first movable fixed seat (53) is disposed on the first telescopic cylinder (52); and The first movable pin (54) is provided on the first movable fixed seat (53) and is used to insert into the end crossbeam (94) and the first inner square tube (912).

7. A pallet welding fixture according to any one of claims 1 to 5, characterized in that, The beam clamping device (6) includes: A crossbeam rotation clamping cylinder (61) is mounted on the welding base (1) and located on both sides of the connecting crossbeam (93) and the end crossbeam (94); and A beam positioning post (62) is provided on the welding base (1) and is used to abut against the bottom of the connecting beam (93) and the end beam (94).

8. A pallet welding fixture according to any one of claims 1 to 5, characterized in that, Also includes: The unloading device (8) is located on both sides of the welding base (1) and is positioned opposite to the side frame (92).

9. A pallet welding fixture according to claim 8, characterized in that, The unloading device (8) includes: A stripping cylinder (81) is located on both sides of the welding base (1); and A stripping plate (82) is provided on the stripping cylinder (81) and is L-shaped. One end of the stripping plate (82) is located below the side frame (92).

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