Skirt board assembly spot welding machine

Abstract

The utility model discloses an apron board assembly spot welding machine which comprises a first vertical frame, a second vertical frame, a first jacking body, a second jacking body, a jacking driver, a spot welding mechanism and a material receiving and discharging mechanism. And the material receiving and discharging mechanism is arranged in a gap between the first vertical frame and the second vertical frame. The first jacking body and the second jacking body are located at a gap between the first vertical frame and the second vertical frame, the first jacking body is assembled on the first vertical frame, and the second jacking body is assembled on the second vertical frame; at least one of the first jacking and pressing body and the second jacking and pressing body is driven by the jacking and pressing driver to enable the end plate and the annular skirt belt which are supported by the material receiving and discharging mechanism to be arranged together in a sleeved mode so as to obtain a combined body, and the spot welding mechanism can move relative to the combined body so as to conduct circumferential spot welding on the end plate and the annular skirt belt in the combined body. According to the apron board assembly spot welding machine, the jacking force between the end plate and the annular skirt band which are sleeved together can be greatly reduced, and the deformation of the annular skirt band caused by overlarge jacking force can be greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of pipe pile production, especially relate to a kind of skirt board assembly spot welding machine, end plate and annular apron are first sleeved together and then fixed in advance using spot welding mode. BACKGROUND

[0002] It is known that in the pipe pile industry, the skirt board is composed of an end plate and an annular apron. In the assembly process of the skirt board, the end plate and the annular apron are first sleeved together, and then the sleeved end plate and annular apron are rotated together, and the annular rib that fixes the annular apron and the end plate together is pressed on the annular apron by a rib pressing mechanism. Therefore, the automatic assembly of the skirt board cannot be achieved without the use of assembly equipment.

[0003] However, in the existing assembly equipment, since it uses a rib pressing mechanism to roll press an annular rib between the sleeved end plate and annular apron for fixing them together, and the sleeved end plate and annular apron need to rotate together during the pressing of the annular rib, the assembly equipment exerts a large top pressure on the sleeved end plate and annular apron to prevent the sleeved end plate and annular apron from moving due to insufficient top pressure during the rolling pressing of the annular rib by the rib pressing mechanism. Due to the large top pressure exerted by the assembly equipment on the sleeved end plate and annular apron, there is a defect that the annular apron is deformed.

[0004] Therefore, there is an urgent need for a skirt board assembly spot welding machine to overcome one or more of the above-mentioned defects. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a skirt board assembly spot welding machine that can greatly reduce the top pressure between the sleeved end plate and annular apron, and the deformation of the annular apron caused by excessive top pressure.

[0006] To achieve the above object, the utility model discloses a skirt board assembly spot welding machine, including first vertical frame, second vertical frame, first top pressure body, second top pressure body, top pressure driver, spot welding mechanism and the material receiving and discharging mechanism for supporting end plate and annular skirt belt from below. The first vertical frame is opposite and spaced apart from the second vertical frame in the first direction, the first top pressure body and second top pressure body are located at the gap between the first vertical frame and second vertical frame, the first top pressure body is assembled to the first vertical frame, the second top pressure body is assembled to the second vertical frame, the second top pressure body is also opposite and spaced apart from the first top pressure body in the first direction, at least one of the first top pressure body and second top pressure body reduces or expands the gap between the first top pressure body and second top pressure body under the drive of the top pressure driver. The material receiving and discharging mechanism is arranged at the gap between the first vertical frame and second vertical frame, the material receiving and discharging mechanism is also upwardly corresponding to the gap between the first top pressure body and second top pressure body, the first top pressure body and second top pressure body under the drive of the top pressure driver package end plate and annular skirt belt supported by the material receiving and discharging mechanism to obtain an assembly, and the spot welding mechanism can move relative to the assembly to perform circumferential spot welding between end plate and annular skirt belt in the assembly.

[0007] Compared with the prior art, by means of the material receiving and discharging mechanism, the center of the end plate and annular skirt belt constituting the skirt board is kept corresponding to the center of both the first top pressure body and second top pressure body for different specifications (ring diameter) of skirt board, for example, the end plate, annular skirt belt, first top pressure body and second top pressure body are coaxially arranged, thereby ensuring the reliability of the first top pressure body and second top pressure body in packaging the end plate and annular skirt belt together; by means of the spot welding mechanism, circumferential spot welding is performed between the end plate and annular skirt belt in the assembly (i.e. the packaged end plate and annular skirt belt), achieving the purpose of pre-fixing between the packaged end plate and annular skirt belt and preparing for subsequent roll welding; therefore, the top pressure between the packaged end plate and annular skirt belt can be greatly reduced, and the deformation of the annular skirt belt caused by excessive top pressure can be avoided.

[0008] Preferably, the material receiving and discharging mechanism comprises a fixed frame, a lifting material receiving frame, a telescopic discharging frame, an up-down lifting driver, a discharging driver and an up-down lifting limiting device, the lifting material receiving frame is located above the fixed frame, the up-down lifting driver is arranged on the fixed frame, the output end of the up-down lifting driver is connected with the lifting material receiving frame, the top surface of the lifting material receiving frame is provided with an end plate inclined to the horizontal surface and an inclined guide surface for guiding the movement of the annular skirt, the telescopic discharging frame and the discharging driver are arranged on the lifting material receiving frame and below the inclined guide surface, the telescopic discharging frame can be extended out of or retracted into the inclined guide surface under the driving of the discharging driver, and the up-down lifting limiting device is arranged on the fixed frame and below the lifting material receiving frame, and the lifting material receiving frame is positioned at different heights from below by the lifting of the up-down lifting limiting device.

[0009] Preferably, the up-down lifting limiting device is a worm gear screw lifting machine, and the output end of the up-down lifting driver is arranged upward.

[0010] Preferably, the lifting material receiving frame is provided with a positioning structure for positioning the end plate and the annular skirt when they move to the preset position along the inclined guide surface, and the telescopic discharging frame is arranged in the positioning structure.

[0011] Preferably, the positioning structure comprises at least two bearing structures spaced apart from each other in the guide direction of the inclined guide surface, the bearing structures protrude upward from the inclined guide surface, and the telescopic discharging frame is located between the two adjacent bearing structures; the output end of the discharging driver is arranged upward.

[0012] Preferably, the skirt assembly spot welding machine further comprises a partition plate, a partition driver for driving the partition plate to move up and down, and a feeding channel corresponding to the gap between the first stand and the second stand in the second direction, the upper end of the feeding channel is arranged in an open manner, the partition plate is arranged above the feeding channel and connected with the output end of the partition driver, the partition plate can move downward under the driving of the partition driver, and the spot welding mechanism is arranged opposite to the feeding channel in the second direction.

[0013] Preferably, the skirt plate assembly spot welding machine further comprises an anti-slip mechanism for blocking and limiting the end plate and the annular skirt belt fed along the feeding channel, the anti-slip mechanism comprises an anti-slip driver assembled on the first stand and a blocking piece assembled on the output end of the anti-slip driver, the blocking piece is driven by the anti-slip driver to move into or out of the gap between the first stand and the second stand along the first direction; the blocking piece is two and is arranged in an upper and lower spaced manner, and each blocking piece corresponds to the anti-slip driver; the spot welding mechanism comprises a two-axis transfer module assembled on the first stand and adjacent to the anti-slip mechanism, and a welding gun driven to move by the two-axis transfer module.

[0014] Preferably, the skirt plate assembly spot welding machine further comprises a bearing assembled on the second stand, a rotating ring body sleeved on the bearing, a fixed plate fixedly connected with the rotating ring body, and a rotating driver assembled on the second stand and capable of driving the rotating ring body to rotate, the fixed plate is located between the second pressing body and the rotating ring body in the first direction, and the pressing driver is assembled on the fixed plate and arranged at the side of the fixed plate away from the second pressing body.

[0015] Preferably, the skirt plate assembly spot welding machine further comprises a strip inserting mechanism for correcting the annular skirt belt between the first pressing body and the second pressing body, the second stand is provided with a mounting frame body located at the side of the second stand away from the first stand and an intermediate supporting rod for fixing the mounting frame body and the fixed plate together; the strip inserting mechanism comprises a strip inserting driver, a strip row, and a strip mounting plate located between the fixed plate and the mounting frame body in the first direction; the strip row comprises a plurality of strips arranged in a circle on the strip mounting plate, the second pressing body is provided with a through hole for the strips to pass through, the strip inserting driver is assembled on the mounting frame body, the output end of the strip inserting driver is assembled and connected with the strip mounting plate, and the strip inserting driver drives the strip mounting plate together with the strip row to move close to or away from the first pressing body; the first pressing body and the second pressing body will also sleeve the end plate and the corrected annular skirt belt together between the first pressing body and the second pressing body in the process of relatively approaching.

[0016] Preferably, the strip mounting plate is a ring structure that can slide in the first direction, each ring of the ring structure is provided with a strip row, and each ring of the ring structure is assembled and connected with the output end of at least one strip inserting driver. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a perspective view of the skirt plate spot welding assembly machine of the utility model.

[0018] Figure 2 is Figure 1 a perspective view of the skirt point welding assembly machine shown in

[0019] Figure 3 is Figure 2 a plan view of the skirt point welding assembly machine shown in

[0020] Figure 4 is Figure 3 a state diagram showing the partition plate being driven by the partition driver to move downward to the partition position, and the end plate and the annular skirt being partitioned by the partition plate.

[0021] Figure 5 is a perspective view showing the base, the first stand, the partition plate, the partition driver, the first pressing body, the feeding channel, the anti-skid mechanism and the receiving and discharging mechanism assembled together.

[0022] Figure 6 is Figure 5 a state diagram showing the partition plate being driven by the partition driver to move downward to the partition position, and the anti-skid mechanism being in the blocking position.

[0023] Figure 7 is a plan view showing the receiving and discharging mechanism with the end plate and the annular skirt supported.

[0024] Figure 8 is Figure 7 a state diagram showing the telescopic discharging frame being driven by the discharging driver to rise upward.

[0025] Figure 9 is Figure 8 a state diagram showing the up-and-down lifting limiting device being lifted upward to the preset limiting position.

[0026] Figure 10 is a perspective view showing the bearing, the rotating ring body, the fixed plate, the rotating driver and the plug-in strip mechanism assembled on the second stand.

[0027] Figure 11 is a perspective view showing the plug-in strip mechanism, the fixed plate, the pressing driver, the mounting frame body, the intermediate support rod and the second pressing body assembled together.

[0028] Figure 12 is Figure 11 a perspective view from another angle.

[0029] Figure 13 is Figure 12 a perspective view with the fixed plate and the second pressing body hidden.

[0030] Figure 14is a plan view showing a rotating ring body with a bearing.

[0031] Figure 15 is a perspective view of the spot welding mechanism in the skirt panel spot welding assembly machine. DETAILED DESCRIPTION

[0032] In order to describe the technical content and structural features of the present application in detail, the following further description is made in conjunction with the embodiments and the accompanying drawings.

[0033] Please refer to Figure 1 , Figure 2 and Figure 7 , the skirt panel assembly spot welding machine 100 comprises a first stand 10a, a second stand 10b, a first top pressing body 20, a second top pressing body 30, a top pressing driver 40 (see Figure 11 ), a spot welding mechanism 50 and a material receiving and discharging mechanism 60 for supporting the end plate 210 and the annular skirt 220 from below. The first stand 10a and the second stand 10b are arranged in opposite directions (see the double arrow A) in the first direction; alternatively, as shown in Figures 1 to 4 , as an example, the lower ends of the first stand 10a and the second stand 10b are fixed to the base 10c, so that the first stand 10a and the second stand 10b are supported by the external support (such as the ground) through the base 10c; obviously, according to actual needs, in other embodiments, the first stand 10a and the second stand 10b can be directly fixedly connected with the external support, so the drawings shown Figures 1 to 4 are not limited.

[0034] The first top pressing body 20 and the second top pressing body 30 are located at the gap 10c between the first stand 10a and the second stand 10b, and the first top pressing body 20 is assembled on the first stand 10a to provide support for the first top pressing body 20 by the first stand 10a; alternatively, as an example, the first top pressing body 20 is rotatably assembled on the first stand 10a to meet the need of rotating the first top pressing body 20 relative to the first stand 10a; in addition, the first top pressing body 20 is a plate structure, but it is not limited thereto.

[0035] The second top pressing body 30 is assembled to the second stand 10b, and the second top pressing body 30 is supported by the second stand 10b; alternatively, as an example, the second top pressing body 30 is rotatably assembled to the second stand 10b to meet the need of rotating the second top pressing body 30 relative to the second stand 10b; in addition, the second top pressing body 30 is a plate structure, but is not limited thereto; the second top pressing body 30 is also arranged in the first direction opposite to the first top pressing body 20, and the second top pressing body 30 is driven by the top pressing driver 40 to reduce or expand the gap 23 between the first top pressing body 20 and the second top pressing body 30; obviously, according to actual needs, the top pressing driver 40 can also be designed to drive the first top pressing body 20 to slide, or the top pressing driver 40 can be designed to drive the first top pressing body 20 and the second top pressing body 30 to slide respectively, so it is not limited to the above. Figure 11

[0036] The material receiving and discharging mechanism 60 is arranged at the gap 10c between the first stand 10a and the second stand 10b, and the material receiving and discharging mechanism 60 also corresponds to the gap 23 between the first top pressing body 20 and the second top pressing body 30 in the upward direction, and the first top pressing body 20 and the second top pressing body 30 are driven by the top pressing driver 40 to assemble the end plate 210 and the annular skirt 220 supported by the material receiving and discharging mechanism 60 to obtain the assembly 200'.

[0037] The spot welding mechanism 50 can move relative to the assembly 200' to circumferentially spot weld the end plate 210 and the annular skirt 220 in the assembly 200', so as to achieve the purpose of preliminarily fixing the assembled end plate 210 and annular skirt 220. Since the spot welding mechanism 50 spot welds the end plate 210 and the annular skirt 220 in the circumferential direction of the assembly 200', the welding points are discontinuous and disconnected; as an example, the spot welding mechanism 50 spot welds three welding points spaced apart from each other in the circumferential direction of the assembly 200', but is not limited thereto. More specifically, as follows:

[0038] As Figures 1 to 6 ​As shown, as an example, the skirt plate assembly spot welding machine 100 further comprises a partition plate 70a, a partition driver 70b for driving the partition plate 70a to move up and down, a feeding channel 80a corresponding to the gap 10c between the first stand 10a and the second stand 10b in the second direction, and an anti-slip mechanism 80b for blocking the end plate 210 and the annular skirt belt 220 fed along the feeding channel 80a. The upper end of the feeding channel 80a is arranged in an open manner, the partition plate 70a is correspondingly located above the feeding channel 80a and is connected with the output end 71 of the partition driver 70b, and the partition plate 70a can be moved downward under the driving of the partition driver 70b to separate the end plate 210 and the annular skirt belt 220 during feeding of the end plate 210 and the annular skirt belt 220, so as to ensure the reliability of feeding of the end plate 210 and the annular skirt belt 220. The spot welding mechanism 50 is arranged opposite to the feeding channel 80a in the second direction (see the double arrow B), so that the spot welding mechanism 50 and the feeding channel 80a are arranged on different sides of the second stand 10b, respectively, and the state is shown in Figure 5 and Figure 6 so that the feeding of the end plate 210 and the annular skirt belt 220 does not interfere with the spot welding of the spot welding mechanism 50. The anti-slip mechanism 80b comprises an anti-slip driver 84 assembled on the first stand 10a and a blocking piece 85 assembled on the output end 841 of the anti-slip driver 84, and the blocking piece 85 is driven by the anti-slip driver 84 to move into or out of the gap 10c between the first stand 10a and the second stand 10b in the first direction, so as to block the end plate 210 and the annular skirt belt 220 during feeding of the end plate 210 and the annular skirt belt 220, and avoid that the end plate 210 and the annular skirt belt 220 cannot be correctly supported by the receiving and discharging mechanism 60 due to excessive slip, thereby ensuring the reliability of feeding of the end plate 210 and the annular skirt belt 220. Specifically, in Figures 3 to 6 , as an example, the blocking piece 85 is two and is arranged in an upper and lower spaced manner, and each blocking piece 85 corresponds to an anti-slip driver 84. This design can be compatible with the blocking needs of end plates 210 and annular skirt belts 220 of different sizes, that is, when the radial sizes of the end plate 210 and the annular skirt belt 220 are large, the upper blocking piece 85 is used for blocking; when the radial sizes of the end plate 210 and the annular skirt belt 220 are small, the lower blocking piece 85 is used for blocking. In addition, in combination with Figure 5 , Figure 6 and Figure 15 , as an example, the spot welding mechanism 50 comprises a two-axis load moving module 52 assembled on the first stand 10a and adjacent to the anti-slip mechanism 80b, and a welding gun 51 moved by the two-axis load moving module 52. Optionally, in Figure 15As an example, the biaxial transfer module 52 includes a first-direction transfer module 521 and a second-direction transfer module 522. The first-direction transfer module 521 may consist of a motor, a lead screw, and a lead nut, while the second-direction transfer module 522 may be a pneumatic or hydraulic cylinder, but is not limited thereto. The fact that the first-direction transfer module 521 can be composed of a motor, a lead screw, and a lead nut, and that the second-direction transfer module 522 can be a pneumatic or hydraulic cylinder, allows the welding torch 51 to slide in both the first and second directions, thereby achieving compatibility with end plates 210 and annular skirts 220 of different sizes.

[0039] like Figures 5 to 9 As shown in the illustration, the material receiving and unloading mechanism 60 includes a fixed frame 61, a lifting receiving frame 62, a telescopic unloading frame 63, a vertical lifting driver 64, an unloading driver 65, and a vertical lifting limit device 66. The lifting receiving frame 62 is located above the fixed frame 61 to meet the need for the lifting receiving frame 62 to move up and down above the fixed frame 61; alternatively, it may be located above the fixed frame 61. Figure 5 and Figure 6 In this example, when the first upright 10a and the second upright 10b are fixed to the base 10c, the lower end of the fixed frame 61 can be fixed to the base 10c, with the base 10c providing support for the fixed frame 61. The lifting drive 64 is mounted on the fixed frame 61, with the fixed frame 61 providing support for the lifting drive 64. The output end 641 of the lifting drive 64 is connected to the lifting receiving frame 62 to meet the need for the lifting drive 64 to drive the lifting receiving frame 62 to rise and fall. The top surface of the lifting receiving frame 62 has an inclined guide surface 621 with a feed end plate 210 inclined relative to the horizontal plane and an annular skirt 220 guiding its movement. The telescopic unloading frame 63 and the unloading drive 65 are each mounted on the lifting receiving frame 62 and located below the inclined guide surface 621. The telescopic unloading frame 63 can extend into or retract from the inclined guide surface 621 under the drive of the unloading drive 65. The vertical lifting limit device 66 is mounted on the fixed frame 61 and located below the lifting receiving frame 62. Therefore, by raising and lowering the vertical lifting limit device 66, the lifting receiving frame 62 is blocked and limited at different heights from below. This ensures that the centers of the end plates 210 and annular skirts 220 of different sizes remain in a suitable position before the first pressing body 20 and the second pressing body 30 assemble and press against the end plates 210 and annular skirts 220. For example, the end plates 210, annular skirts 220, first pressing body 20, and second pressing body 40 are coaxial. Specifically, in Figures 7 to 9In the embodiment, as an example, the up-and-down lifting limiting device 66 is a worm screw lifting machine, which precisely controls the position of the lifting receiving frame 62. The up-and-down lifting driver 64 is arranged on the opposite sides of the up-and-down lifting limiting device 66, and the output end 641 of the up-and-down lifting driver 64 is arranged upward. This design ensures the stability and reliability of the lifting receiving frame 62. In addition, the lifting receiving frame 62 is provided with a positioning structure 67 for positioning the end plate 210 and the annular skirt 220 when they move along the inclined guide surface 621 to the preset position, so as to improve the reliability of the positioning of the end plate 210 and the annular skirt 220 by the lifting receiving frame 62. The telescopic discharging frame 63 is arranged in the positioning structure 67, so as to facilitate the need of the telescopic discharging frame 63 to push out the end plate 210 and the annular skirt 220 positioned by the positioning structure 67. More specifically, the telescopic discharging frame 63 is arranged in the positioning structure 67. Figures 7 to 9 In the embodiment, as an example, the positioning structure 67 is two bearing structures spaced apart from each other in the guide direction of the inclined guide surface 621 (see the arrow in the lifting receiving frame 62). Figure 6 In the embodiment, the bearing structure protrudes upward from the inclined guide surface 621, and the telescopic discharging frame 63 is located between the two adjacent bearing structures. This design improves the smoothness of the end plate 210 and the annular skirt 220 entering and exiting the positioning structure 67. In addition, the discharging driver 65 is located below the telescopic discharging frame 63, and the output end 651 of the discharging driver 65 is arranged upward, so as to simplify the assembly relationship between the discharging driver 65 and the telescopic discharging frame 63. For example, the up-and-down lifting driver 64 and the discharging driver 65 can be air cylinders or hydraulic cylinders.

[0040] In the embodiment, the up-and-down lifting driver 64 drives the lifting receiving frame 62 to rise upward to the position opposite to the feeding channel 80a, so as to ensure the smoothness of the end plate 210 and the annular skirt 220 entering the lifting receiving frame 62 from the feeding channel 80a. The up-and-down lifting limiting device 66 limits the downward descent of the lifting receiving frame 62, so that the centers of the end plate 210 and the annular skirt 220 supported by the lifting receiving frame 62 remain matched with the centers of the first pressing body 20 and the second pressing body 30. For example, the end plate 210, the annular skirt 220, the first pressing body 20, and the second pressing body 30 are coaxially arranged, so as to meet the needs of different sizes of the end plate 210 and the annular skirt 220.

[0041] In combination with Figure 3 , Figure 4 , Figure 10 , Figure 11 and Figure 14The skirt plate assembly spot welding machine 100 further comprises a bearing 80c assembled on the second stand 10b, a rotating ring body 80d sleeved on the bearing 80c, a fixed plate 80e fixedly connected with the rotating ring body 80d, and a rotating driver 80f assembled on the second stand 10b and capable of driving the rotating ring body 80d to rotate. Figure 3 and Figure 4 The top pressing driver 40 is assembled on the fixed plate 80e and arranged at a side of the fixed plate 80e facing away from the second top pressing body 30. Therefore, the bearing 80c ensures the smoothness and flexibility of the rotation of the rotating ring body 80d together with the fixed plate 80e and the second top pressing body 30. Figure 10 and Figure 14 As an example, the outer edge of the rotating ring body 80d is provided with a ring of engagement teeth 81, and the rotating driver 80f is correspondingly provided with a gear 86 in transmission cooperation with the engagement teeth 81, so that the cooperation of the gear 86 and the engagement teeth 81 realizes the purpose of the rotating driver 80f driving the rotating ring body 80d to rotate together with the fixed plate 80e and the second top pressing body 30, so as to meet the need of the combination 200' pressed by the first top pressing body 20 and the second top pressing body 30 to follow the rotation. For example, the rotating driver 80f is a motor, and the top pressing driver 40 can be a pneumatic cylinder or a hydraulic cylinder.

[0042] In combination with Figures 10 to 13 As an example, the skirt plate assembly spot welding machine 100 further comprises a plug strip mechanism 90 for correcting the annular skirt belt 220 between the first top pressing body 20 and the second top pressing body 30. The second stand 10b is provided with a mounting frame body 10e located at a side of the second stand 10b facing away from the first stand 10a and an intermediate support rod 10f fixing the mounting frame body 10e and the fixed plate 80e together, so as to meet the need of the plug strip mechanism 90 rotating together with the rotating ring body 80d. Specifically, in combination with Figures 10 to 13 As an example, the plug strip mechanism 90 comprises a plug strip driver 91, a plug strip row, and a plug strip mounting plate 93 located between the fixed plate 80e and the mounting frame body 10e in the first direction. The plug strip row comprises a plurality of plug strips 921 arranged in a ring on the plug strip mounting plate 93, and the second top pressing body 30 is provided with a through hole 31 for the plug strips 921 to pass through; the plug strip driver 91 is assembled on the mounting frame body 10e, the output end 911 of the plug strip driver 91 is assembled and connected with the plug strip mounting plate 93, and the plug strip driver 91 drives the plug strip mounting plate 93 together with the plug strip row to move close to or away from the first top pressing body 20. In the process of relatively approaching, the end plate 210 between the first top pressing body 210 and the second top pressing body 30 will also be sleeved with the corrected annular skirt belt 220, so as to improve the reliability of the sleeving of the end plate 210 and the annular skirt belt 220. More specifically,Figure 13 In the embodiment, as an example, the strip mounting plate 93 is a four-ring structure 931, each ring of which is slidable in the first direction, and each ring of the four-ring structure 931 is provided with a strip row, and each ring of the four-ring structure 931 is connected with the output end 911 of the two strip drivers 91. In this way, the ring skirt 220 of each type is corrected by the strip row on the corresponding ring of the four-ring structure 931, so that the strip rows on each ring of the four-ring structure 931 do not interfere with each other. It is worth noting that, although only one strip 931 on the corresponding ring of the four-ring structure 931 is shown, the remaining strips 931 of the ring have been hidden. In addition, the strip mechanism 90 corrects the ring skirt 220 by inserting into the ring skirt 220. In addition, the strip driver 91 can be a pneumatic cylinder or a hydraulic cylinder. Figure 13 In the embodiment, as an example, the strip mounting plate 93 is a four-ring structure 931, each ring of which is slidable in the first direction, and each ring of the four-ring structure 931 is provided with a strip row, and each ring of the four-ring structure 931 is connected with the output end 911 of the two strip drivers 91. In this way, the ring skirt 220 of each type is corrected by the strip row on the corresponding ring of the four-ring structure 931, so that the strip rows on each ring of the four-ring structure 931 do not interfere with each other. It is worth noting that, although only one strip 931 on the corresponding ring of the four-ring structure 931 is shown, the remaining strips 931 of the ring have been hidden. In addition, the strip mechanism 90 corrects the ring skirt 220 by inserting into the ring skirt 220. In addition, the strip driver 91 can be a pneumatic cylinder or a hydraulic cylinder.

[0043] Compared with the prior art, by means of the material receiving and discharging mechanism 60, the centers of the end plate 210 and the ring skirt 220 constituting the skirt plate are kept in a position corresponding to the center of both the first top pressing body 20 and the second top pressing body 30, for example, the end plate 210, the ring skirt 220, the first top pressing body 20 and the second top pressing body 30 are coaxially arranged, thereby ensuring the reliability of the first top pressing body 20 and the second top pressing body 30 in assembling the end plate 210 and the ring skirt 220 together; by means of the spot welding mechanism 50, the end plate 210 and the ring skirt 220 in the assembly 200' (i.e. the end plate 210 and the ring skirt 220 assembled together) are circumferentially spot welded, so as to achieve the purpose of fixing the end plate 210 and the ring skirt 220 assembled together, and prepare for the subsequent roll welding; therefore, the top pressing force between the end plate 210 and the ring skirt 220 assembled together can be greatly reduced, and the deformation of the ring skirt 220 caused by excessive top pressing force can be avoided.

[0044] It is further explained that, in the embodiment, the first direction is the front-rear direction of the first stand 10a, the second direction is the left-right direction of the first stand 10a, and the direction indicated by the arrow C is the up-down direction of the first stand 10a. Figure 1 In the embodiment, the first direction is the front-rear direction of the first stand 10a, the second direction is the left-right direction of the first stand 10a, and the direction indicated by the arrow C is the up-down direction of the first stand 10a.

[0045] The above only discloses preferred embodiments of the present application, and cannot limit the scope of the present application. Any equivalent changes made according to the claims of the present application are within the scope of the present application.

Claims

1. A point welding machine for assembling a skirt panel, comprising a first stand, a second stand, a first top press, a second top press, and a top press driver, the first stand and the second stand being arranged in a spaced-apart opposition in a first direction, the first top press and the second top press being located at a gap between the first stand and the second stand, the first top press being fitted to the first stand, the second top press being fitted to the second stand, the second top press also being arranged in a spaced-apart opposition with the first top press in the first direction, at least one of the first top press and the second top press being caused to reduce or enlarge the gap between the first top press and the second top press by the top press driver, characterized in that, The skirt assembly spot welding machine further comprises a spot welding mechanism and a material receiving and discharging mechanism for receiving and discharging the end plate and the annular skirt from below, the material receiving and discharging mechanism is arranged at the gap between the first and second vertical frames, and the material receiving and discharging mechanism further corresponds to the gap between the first and second top pressing bodies upwardly, the first and second top pressing bodies are driven by the top pressing driver to assemble the end plate and the annular skirt received by the material receiving and discharging mechanism to obtain an assembly, and the spot welding mechanism is movable relative to the assembly to perform circumferential spot welding between the end plate and the annular skirt in the assembly.

2. The apron assembly spot welder of claim 1, wherein, The material receiving and discharging mechanism comprises a fixed frame, a lifting receiving frame, a telescopic discharging frame, an up-down lifting driver, a discharging driver and an up-down lifting limiting device, the lifting receiving frame is arranged above the fixed frame correspondingly, the up-down lifting driver is arranged on the fixed frame, the output end of the up-down lifting driver is connected with the lifting receiving frame, the top surface of the lifting receiving frame has an inclined guide surface inclined relative to the horizontal plane for guiding the movement of the end plate and the annular skirt, the telescopic discharging frame and the discharging driver are arranged on the lifting receiving frame below the inclined guide surface, the telescopic discharging frame can be extended out of or retracted into the inclined guide surface under the driving of the discharging driver, and the up-down lifting limiting device is arranged on the fixed frame below the lifting receiving frame correspondingly, and the lifting receiving frame is positioned at different heights from below by the lifting of the up-down lifting limiting device.

3. The apron assembly spot welder of claim 2, wherein, The up-down lifting limiting device is a worm gear screw lifting machine, and the output end of the up-down lifting driver is arranged upwardly.

4. The apron assembly spot welder of claim 2, wherein, The lifting receiving frame is provided with a positioning structure for positioning the end plate and the annular skirt when they move to a preset position along the inclined guide surface, and the telescopic discharging frame is arranged in the positioning structure.

5. The apron assembly spot welder of claim 4, wherein, The positioning structure is at least two bearing structures separated from each other in the guide direction of the inclined guide surface, the bearing structures protrude upwardly from the inclined guide surface, and the telescopic discharging frame is located between the adjacent two bearing structures; the output end of the discharging driver is arranged upwardly.

6. The apron assembly spot welder of claim 1, wherein, Further comprising a partition plate, a partition driver for driving the partition plate to move up and down, and a feeding channel corresponding to the gap between the first and second vertical frames in a second direction, the upper end of the feeding channel is arranged in an open manner, the partition plate is correspondingly arranged above the feeding channel and is connected with the output end of the partition driver, the partition plate can be moved downwardly under the driving of the partition driver, and the spot welding mechanism is arranged opposite to the feeding channel in the second direction.

7. The apron assembly spot welder of claim 6, wherein, The anti-skid mechanism is used for blocking and limiting the end plate and the annular skirt belt fed along the feeding channel, and comprises an anti-skid driver mounted on the first stand and a blocking piece mounted on the output end of the anti-skid driver, which is moved into or out of the gap between the first stand and the second stand in the first direction under the driving of the anti-skid driver; the blocking piece is two and arranged in an upper and lower spaced manner, and each blocking piece corresponds to the anti-skid driver; the spot welding mechanism comprises two-axis transfer module mounted on the first stand and adjacent to the anti-skid mechanism, and a welding gun driven to move by the two-axis transfer module.

8. The apron assembly spot welder of claim 1, wherein, The second stand is further provided with a bearing, a rotating ring body sleeved on the bearing, a fixed plate fixedly connected with the rotating ring body, and a rotating driver mounted on the second stand and capable of driving the rotating ring body to rotate, and the fixed plate is located between the second pressing body and the rotating ring body in the first direction, and the pressing driver is mounted on the fixed plate and arranged at the side of the fixed plate away from the second pressing body.

9. The apron assembly spot welder of claim 8, wherein, The second stand is further provided with a mounting frame body located at the side of the second stand away from the first stand, and an intermediate support rod for fixing the mounting frame body and the fixed plate together; the insertion strip mechanism comprises an insertion strip driver, an insertion strip row, and an insertion strip mounting plate located between the fixed plate and the mounting frame body in the first direction; the insertion strip row comprises a plurality of insertion strips arranged in a circle on the insertion strip mounting plate, the second pressing body is provided with a through hole for the insertion strip to pass through, the insertion strip driver is mounted on the mounting frame body, the output end of the insertion strip driver is connected with the insertion strip mounting plate, and the insertion strip driver drives the insertion strip mounting plate and the insertion strip row to move close to or away from the first pressing body; the first pressing body and the second pressing body will also sleeve the end plate and the corrected annular skirt belt between them together in the process of relatively approaching.

10. The apron assembly spot welder of claim 9, wherein, The insertion strip mounting plate is a ring-shaped structure that can slide in the first direction, and each ring-shaped structure is provided with an insertion strip row, and each ring-shaped structure is connected with the output end of at least one insertion strip driver.

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