A mixing barrel subframe rear assembly welding device and an automated welding system

Abstract

The present invention discloses a welding device for a rear assembly of a mixing barrel sub-frame, comprising a flipping mechanism and a base installed on the flipping mechanism, wherein a platform plate and a top plate fixing mechanism are provided on the upper part of the base, wherein the platform plate is used to carry the top plate to be welded and fix the top plate through the top plate fixing mechanism, and a rib plate fixing mechanism that can be flipped up and down is hinged on the front side of the base, and is used to adsorb and limit two rib plates on the top plate after the rib plate fixing mechanism flips upward to the top of the platform plate, so as to facilitate the welding operation of the rib plate and the back plate by the welding robot, and a side plate fixing mechanism is provided on the left and right sides of the base, and is used to limit the side plates when welding the side plates, so as to keep the side plates limited when the flipping mechanism drives the base to flip. The present invention also discloses an automated welding system. The present invention has the advantages of simple and compact structure, convenient and quick operation, high degree of automation, good welding effect, greatly improved work efficiency, and greatly reduced labor costs.

Description

Technical Field

[0001] The present invention mainly relates to the field of automated welding production, in particular to a mixing barrel sub-frame rear assembly welding device, and also to an automated welding system. Background Art

[0002] In modern production, welding is used more and more. For example, welding the mixing barrel of a mixer truck, the water tank of a sprinkler truck, etc. There is also a mixing barrel subframe backstage. The mixing barrel subframe backstage structure is very special, such as Figure 17 As shown, it has a top plate A, to the bottom of which two symmetrical ribs B are welded. Then, the front plate D and rear plate C are welded to the top plate A and ribs B respectively. Finally, the two side plates E are welded to the top plate A, front plate D, and rear plate C respectively (only one side plate E is shown in the figure). The following technical problems arise during the assembly and welding of the rear end of the mixing drum subframe:

[0003] First, the degree of automation is low. The backstage of the mixing barrel subframe is too large and heavy. When performing positional welding and flip welding, large workpieces need to be manually moved. This is not only very troublesome, time-consuming, and inefficient, but also requires the participation of multiple people, resulting in high labor costs and sometimes even risks of being hit or cut.

[0004] Secondly, the welding requirements are high. The mixing barrel subframe backstage needs to be welded in multiple directions on different surfaces and plates. That is, when welding the mixing barrel subframe backstage, the working surface needs to be changed many times, that is, the workpiece needs to be turned over many times, which undoubtedly increases the difficulty of the operation. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide a mixing barrel subframe rear group welding device with a simple and compact structure, convenient and quick operation, high degree of automation, good welding effect, which can greatly improve work efficiency and greatly reduce labor costs. It also provides an automated welding system.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The support frame is fixed to the workpiece by the support member and the support frame is fixed to the support frame by the support member, and the support member is fixed to the support frame by the support member.

[0008] As a further improvement of the present invention, the top plate fixing mechanism includes one or more flat second electromagnetic suction plates, which are arranged close to the platform plate to adsorb and limit the top plate placed on the platform plate.

[0009] As a further improvement of the present invention, the top plate fixing mechanism includes two or more positioning columns protruding from the platform plate, and the positioning columns are used to be inserted into positioning holes on the top plate to position and limit the top plate on the platform plate.

[0010] As a further improvement of the present invention, the top plate fixing mechanism includes one or more limit hooks movably arranged in the positioning column, and the positioning column is provided with an opening portion, which is used to press the top plate downward when the limit hook is pressed into the opening portion, and the middle portion of the limit hook is hinged to the middle portion of the positioning column through a first rotating shaft, and the lower portion of the limit hook extends under the platform plate and is hinged to the first connecting rod, and the lower end of the first connecting rod is hinged to the driving end of the vertically arranged first driving cylinder, which is used to press the limit hook downward into the opening portion when the first driving cylinder pulls the first connecting rod downward / or flip the limit hook upward when the first connecting rod is pushed upward so as not to block the top plate.

[0011] As a further improvement of the present invention, the rib plate fixing mechanism is provided with two symmetrically arranged first electromagnetic suction plates. When the rib plate fixing mechanism is flipped upward to above the platform plate, the two first electromagnetic suction plates respectively adsorb the two rib plates and limit them on the top plate.

[0012] As a further improvement of the present invention, two sets of slide rail assemblies are provided on the rib fixing mechanism, and the first electromagnetic suction plate is adjustably fixed to the rib fixing mechanism through the slide rail assembly, so as to adjust the position of the first electromagnetic suction plate according to the requirements of ribs of different specifications.

[0013] As a further improvement of the present invention, the rib fixing mechanism includes a flip platform, a flip rod, a second connecting rod and a second driving cylinder. The two first electromagnetic suction plates are installed on the flip platform, the second driving cylinder is arranged horizontally on the base, the upper end of the second connecting rod is hingedly installed on the base, and the lower end is hinged to the flip rod. The front end of the flip rod extends out of the base for fixed connection with the flip platform, and the rear end of the flip rod is hinged to the driving end of the second driving cylinder, so that when the second driving cylinder pushes the flip rod forward, the flip rod drives the flip platform to flip upward to an upright state.

[0014] As a further improvement of the present invention, the side panel fixing mechanism includes a third driving cylinder, a third connecting rod, a pressure rod and a pressure block. The third driving cylinder is arranged horizontally on the base. One end of the third connecting rod is hinged to the base, and the other end is connected to the pressure rod. One end of the pressure rod is hinged to the driving end of the third driving cylinder, and a pressure block is provided on the other end. During operation, the third driving cylinder extends forward and is used to push the pressure rod to flip upward and be in an upright state so that the pressure block is pressed on the side panel.

[0015] As a further improvement of the present invention, the flipping mechanism includes a stand and a rotating arm, one end of the rotating arm is installed on the stand through a vertical rotation drive assembly, so as to rotate the rotating arm in the vertical direction under the drive of the vertical rotation drive assembly, and a horizontal rotation drive assembly is provided on the other end of the rotating arm, and the base is installed on the rotating arm through the horizontal rotation drive assembly. During welding operations, the vertical rotation drive assembly and the horizontal rotation drive assembly cooperate with each other to enable the base to drive the workpiece to be welded to rotate in the vertical and / or horizontal directions so as to facilitate the gripper robot to grasp the workpiece and / or the welding robot to weld the workpiece.

[0016] An automated welding system is provided with a welding robot, a gripper robot, and a mixing barrel sub-frame rear-end assembly welding device as described above. The gripper robot is used to grab the workpiece to be welded and transport it to the mixing barrel sub-frame rear-end assembly welding device. The welding robot is used to weld the workpiece on the mixing barrel sub-frame rear-end assembly welding device.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] First, the mixing drum sub-frame rear assembly welding device of the present invention has a high degree of automation and can cooperate with welding robots and gripper robots to achieve good welding effects and high welding efficiency, greatly improving work efficiency and greatly reducing labor costs.

[0019] Secondly, the welding device for the rear end assembly of the mixing barrel sub-frame of the present invention is specially designed for the special structure of the rear end of the mixing barrel sub-frame. It can not only realize the positional fixation of each component during welding, but also realize multiple angles of rotation to cooperate with welding, so that different surfaces and different plates can be welded in all directions, with high welding precision and good welding effect. The device occupies a small space and is easy to install and operate.

[0020] Third, the present invention relates to the welding device for the rear assembly of the mixing barrel sub-frame. The second flat electromagnetic suction plate can not only support the top plate so as to serve as a supporting base for subsequent welding, but can also electromagnetically absorb the top plate, so that the fixing effect is good and it is convenient for the subsequent welding of other panels. The positioning column can cooperate with further limiting, so that after the top plate is stuck in two or more positioning columns, it will not be displaced, further improving the fixing effect. Secondly, it has a positioning effect, so that when the gripper robot grabs the top plate, the top plate is always in the positioning position on the platform plate, which is convenient for the subsequent positioning and coordination of other panels, thereby ensuring the overall welding accuracy.

[0021] Fourthly, the welding device for the rear end assembly of the mixing barrel sub-frame of the present invention has a first electromagnetic suction plate that not only has a good adsorption effect, but also has surface adsorption, which can form a good surface support, so that the rib plate will not undergo extrusion deformation and welding deformation during welding.

[0022] Fifth, the design of the rib plate fixing mechanism of the welding device for the rear end assembly of the mixing barrel sub-frame of the present invention is, firstly, simple and compact in structure and does not take up too much space; secondly, it is specially designed for the special structure of the rear end of the mixing barrel sub-frame, and can be turned upward before operation so as not to hinder the placement of the platform plate; it can also be turned upward during operation to limit and support the two rib plates, facilitating the welding and fixation of the two rib plates and the rear plate; and it can also be withdrawn when welding the front plate, so as not to hinder the welding and installation of the front plate.

[0023] Sixth, the design of the rib plate fixing mechanism of the mixing barrel sub-frame rear assembly welding device of the present invention is simple and compact in structure and does not take up too much space; secondly, it is specially designed for the special structure of the mixing barrel sub-frame rear end, which can meet the requirements of the mixing barrel sub-frame rear end when rotating and flipping for welding, so that the lower part of the side plate will be tightly in contact with the front plate, rear plate and bottom plate, ensuring excellent welding effect.

[0024] Seventh, the side panel fixing mechanism of the welding device for the rear end of the mixing barrel sub-frame of the present invention is designed. Firstly, the structure is simple and compact, which does not take up too much space. Secondly, it is specially designed for the special structure of the rear end of the mixing barrel sub-frame, which can meet the requirements that when the rear end of the mixing barrel sub-frame is rotated and flipped for welding, the lower part of the side panel will be tightly in contact with the front panel, rear panel and bottom panel, thereby ensuring an excellent welding effect.

[0025] Eighth, the present invention relates to the mixing drum subframe rear assembly welding device. The vertical rotation drive assembly and the horizontal rotation drive assembly cooperate with each other. This unique structural design can cooperate and support each other with the numerous limiting and fixing mechanisms on the base. It is precisely because these limiting and fixing mechanisms ensure the fixation of multiple plates on the base that the workpiece to be welded can be rotated vertically and / or horizontally. It is precisely because the workpiece to be welded can be rotated vertically and / or horizontally that the excellent welding effect is guaranteed, and the floor space is small. This group forms a highly efficient operation coordination between the welding device, welding robot, and gripper robot.

[0026] Ninth, the automated welding system of the present invention is equipped with a welding robot, a gripper robot, and a mixing barrel subframe backstage group welding device, which makes the automated welding system of the present invention highly automated, occupies a small space, has good welding effect, and high welding efficiency, greatly improving work efficiency and greatly reducing labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structural principle of the mixing drum sub-frame rear assembly welding device of the present invention.

[0028] Figure 2 It is a schematic diagram of the partial structural principle of the mixing drum sub-frame rear assembly welding device of the present invention.

[0029] Figure 3 It is a schematic diagram of the three-dimensional structural principle of the limiting hook of the present invention.

[0030] Figure 4 It is a schematic side view of the structural principle of the rib plate fixing mechanism of the present invention when it is not flipped up.

[0031] Figure 5 It is a schematic diagram of the side structural principle of the rib fixing mechanism of the present invention when it is flipped up.

[0032] Figure 6 It is a schematic diagram of the principle of the partial three-dimensional structure of the rib fixing mechanism of the present invention when it is not flipped up.

[0033] Figure 7 It is a schematic diagram of the principle of the partial three-dimensional structure of the rib fixing mechanism of the present invention when it is turned up.

[0034] Figure 8 It is a schematic diagram of the three-dimensional structural principle of the side panel fixing mechanism of the present invention when it is not flipped up.

[0035] Figure 9 It is a schematic diagram of the three-dimensional structural principle of the side panel fixing mechanism of the present invention when it is flipped up.

[0036] Figure 10This is a schematic diagram of the structural principle of the mixing barrel sub-frame rear assembly welding device during operation of the present invention. Figure 1 .

[0037] Figure 11 This is a schematic diagram of the structural principle of the mixing barrel sub-frame rear assembly welding device during operation of the present invention. Figure 2 .

[0038] Figure 12 This is a schematic diagram of the structural principle of the mixing barrel sub-frame rear assembly welding device during operation of the present invention. Figure 3 .

[0039] Figure 13 This is a schematic diagram of the structural principle of the mixing barrel sub-frame rear assembly welding device during operation of the present invention. Figure 4 .

[0040] Figure 14 This is a schematic diagram of the structural principle of the mixing barrel sub-frame rear assembly welding device during operation of the present invention. Figure 5 .

[0041] Figure 15 This is a schematic diagram of the structural principle of the mixing barrel sub-frame rear assembly welding device during operation of the present invention. Figure 6 .

[0042] Figure 16 It is a schematic diagram of the three-dimensional structural principle of the automatic welding system of the present invention.

[0043] Figure 17 The present invention is a schematic diagram of the three-dimensional structural principle of the mixing barrel auxiliary frame rear end in the prior art.

[0044] The numbers in the figure represent:

[0045] 1. Base; 2. Platform plate; 3. Top plate fixing mechanism; 31. Second electromagnetic suction plate; 32. Positioning column; 33. Limit hook; 331. First rotating axis; 34. First connecting rod; 35. First driving cylinder; 4. Rib plate fixing mechanism; 41. First electromagnetic suction plate; 42. Flipping platform; 43. Flipping rod; 44. Second connecting rod; 45. Second driving cylinder; 5. Side plate fixing mechanism; 51. Third driving cylinder; 52. Third connecting rod; 53. Press rod; 54. Press block; 6. Flipping mechanism; 61. Stand; 62. Rotating arm; 63. Vertical rotation drive assembly; 64. Horizontal rotation drive assembly; 7. Welding robot; 8. Gripper robot. DETAILED DESCRIPTION

[0046] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] like Figures 1 to 17As shown, the present invention provides a mixing drum sub-frame rear assembly welding device for working in conjunction with a welding robot and a gripper robot. For ease of understanding, Figure 15 The welding robot 7 and the gripper robot 8 are provided in the device. The gripper robot 8 grabs the workpiece and moves it by electromagnetic adsorption. The device includes a turning mechanism 6 and a base 1 installed on the turning mechanism 6. The lower end of the turning mechanism 6 is provided with a base ( Figure 1 As shown in FIG), it is used to support the flip mechanism 6. The base 1 is used to fix the workpiece to be welded (such as Figure 17 As shown, the workpiece to be welded includes a top plate A, two symmetrical rib plates B, a front plate D, a rear plate C and two side plates E, which are used to form the rear end of the mixing barrel sub-frame. The flipping mechanism 6 is used to drive the base 1 to flip so that the welding robot can weld the workpiece. The upper part of the base 1 is provided with a platform plate 2 and a top plate fixing mechanism 3. The platform plate 2 is used to carry the top plate to be welded and fix the top plate through the top plate fixing mechanism 3. The front side of the base 1 is hinged with a rib plate fixing mechanism 4 that can be flipped up and down. When the rib plate fixing mechanism 4 is flipped upward to the top of the platform plate 2, the two rib plates are adsorbed and limited on the top plate so that the welding robot can weld the rib plates and the back plate. A side plate fixing mechanism 5 is provided on the left and right sides of the base 1. It is used to limit the side plates when welding the side plates so that the side plates can remain limited when the flipping mechanism 6 drives the base 1 to flip. The specific implementation principle is as follows:

[0048] Before the operation, Figure 1 、 Figure 4 、 Figure 10 In the state shown, the rib fixing mechanism 4 is not flipped upward and does not form an obstruction to the platform plate 2.

[0049] During operation, the gripper robot 8 first grabs the top plate and places it on the platform plate 2 of the base 1, and then the top plate fixing mechanism 3 fixes the top plate. Figure 10 The state shown. Then the gripper robot 8 grabs the right rib plate and places it on the top plate. At this time, the rib plate fixing mechanism 4 flips upward to the top of the platform plate 2, and then adsorbs and fixes the rib plate. And the gripper robot 8 adsorbs and fixes the right side of the rib plate, while the rib plate fixing mechanism 4 adsorbs and fixes the left side of the rib plate as shown in the figure. That is, the rib plate fixing mechanism 4 and the gripper robot 8 work together to form a clamping shape, and together clamp and fix the rib plate, with a good fixing effect. After fixing, the welding robot 7 welds and fixes the contact point between the right rib plate and the bottom plate. At this time, Figure 11 Then the gripper robot 8 grabs the left rib plate and places it on the top plate, and the welding robot 7 welds the contact point between the left rib plate and the bottom plate according to the above technical ideas.

[0050] Then the gripper robot 8 grabs the back plate and places it on the top plate, pressing the back plate from the back. At this time, since the two ribs have been welded to the top plate, and the rib fixing mechanism 4 is still adsorbing and fixing the two ribs, it can form an excellent support for the ribs, making it easier for the gripper robot 8 to press the back plate tightly against the two ribs. Then the welding robot 7 welds and fixes the contact points between the back plate and the two ribs, as well as the back plate and the bottom plate. At this time, Figure 12 Status shown.

[0051] Then the rib plate fixing mechanism 4 flips downward and retracts, and the gripper robot 8 grabs the front plate and places it on the top plate, pressing the front plate from the back. Since the back plate, two rib plates, and bottom plate are welded to form a whole at this time, the stability is good, and even if the rib plate fixing mechanism 4 is withdrawn, it will not affect the pressing of the front plate. Moreover, the rib plate fixing mechanism 4 must also be withdrawn so as not to hinder the installation of the front plate. Then the welding robot 7 welds and fixes the front plate and the two rib plates, as well as the contact points between the front plate and the bottom plate. At this time, Figure 13 Status shown.

[0052] Then, the gripper robot 8 grabs the right side panel and presses the right side panel tightly against the front panel, rear panel and bottom panel. Then the welding robot 7 welds and fixes the upper welding part of the right side panel. At this time, since the front panel, two ribs, rear panel and bottom panel have been installed in place, the welding robot 7 lacks working space and is not convenient for welding the lower part of the right side panel. Therefore, after welding and fixing the upper part of the right side panel, the gripper robot 8 withdraws and no longer grabs the right side panel (at this time, as shown in the figure below). Figure 14 Then the flip mechanism 6 drives the base 1 to flip, so that the right side plate moves closer to the gripper robot 8, so that the gripper robot 8 can weld the lower part of the right side plate (at this time, Figure 15 During this displacement process, since the gripper robot 8 has been withdrawn, in order to ensure that the lower part of the right side plate will be tightly in contact with the front plate, rear plate, and bottom plate (otherwise the gap at the bottom will be too wide, welding will not be possible or the welding effect will be poor), before displacement, the side plate fixing mechanism 5 on the right side of the base 1 will tightly press the right side plate against the limit, and then the welding robot 7 will weld and fix the right side plate. Figure 15 Status shown.

[0053] Through the above special scientific design, it has the following technical advantages:

[0054] First, the mixing drum sub-frame rear assembly welding device of the present invention has a high degree of automation and can cooperate with welding robots and gripper robots to achieve good welding effects and high welding efficiency, greatly improving work efficiency and greatly reducing labor costs.

[0055] Secondly, the welding device for the rear end assembly of the mixing barrel sub-frame of the present invention is specially designed for the special structure of the rear end of the mixing barrel sub-frame. It can not only realize the positional fixation of each component during welding, but also realize multiple angles of rotation to cooperate with welding, so that different surfaces and different plates can be welded in all directions, with high welding precision and good welding effect. The device occupies a small space and is easy to install and operate.

[0056] Furthermore, in a preferred embodiment, the top plate securing mechanism 3 includes one or more flat second electromagnetic suction plates 31, positioned adjacent to the platform plate 2, for securing the top plate placed on the platform plate 2 by suction. These flat second electromagnetic suction plates 31 not only support the top plate, serving as a support base for subsequent welding, but also electromagnetically secure it, effectively securing it and facilitating subsequent welding of other panels.

[0057] like Figure 2 、 Figure 3 、 Figure 10 As shown, further, in a preferred embodiment, the top plate fixing mechanism 3 includes two or more positioning posts 32 protruding from the platform plate 2. The positioning posts 32 are used to insert into the positioning holes on the top plate to position and restrict the top plate on the platform plate 2. The positioning posts 32 can be used to further limit the top plate, so that after the top plate is inserted into two or more positioning posts 32, it will not move, further improving the fixing effect. Secondly, it has a positioning effect, so that when the gripper robot 8 grabs the top plate, the top plate is always in the fixed position on the platform plate 2, which facilitates the subsequent positioning and coordination of other panels, thereby ensuring the overall welding accuracy.

[0058] like Figure 2 、 Figure 3 、 Figure 10As shown, further, in a preferred embodiment, the top plate securing mechanism 3 includes one or more stop hooks 33 movably disposed within a positioning column 32. The positioning column 32 has an opening, which is used to press the top plate downward when the stop hook 33 is pressed into the opening. The middle portion of the stop hook 33 is hinged to the middle portion of the positioning column 32 via a first rotation axis 331. The lower portion of the stop hook 33 extends below the platform plate 2 and is hinged to a first connecting rod 34. The lower end of the first connecting rod 34 is hinged to the driving end of a vertically arranged first driving cylinder 35. When the first driving cylinder 35 pulls the first connecting rod 34 downward, the stop hook 33 is pressed downward into the opening, or when the first connecting rod 34 is pushed upward, the stop hook 33 is flipped upward to prevent it from blocking the top plate. The stop hook 33 is disposed within the positioning column 32, saving equipment space. When it is flipped upward, it fits within the circumference of the positioning column 32, preventing it from blocking the falling top plate. When the top plate is dropped into place, the first driving cylinder 35 pulls the first connecting rod 34 downward, so that the first connecting rod 34 drives the limiting hook 33 to flip downward, just pressing into the opening and pressing the top plate downward, further preventing the top plate from being displaced, further improving the fixing effect, and facilitating the subsequent welding operation of other panels.

[0059] like Figure 1 、 Figure 4 、 Figure 5 As shown, in a preferred embodiment, the rib-plate fixing mechanism 4 is further provided with two symmetrically arranged first electromagnetic suction plates 41. When the rib-plate fixing mechanism 4 is flipped upward above the platform plate 2, the two first electromagnetic suction plates 41 respectively attract and secure the two ribs to the top plate. The first electromagnetic suction plates 41 not only provide excellent suction but also provide surface-to-surface suction, providing excellent surface support and preventing compression and welding deformation of the ribs during welding.

[0060] Furthermore, in a preferred embodiment, the rib fixing mechanism 4 is equipped with two sets of slide rail assemblies. The first electromagnetic suction plate 41 is adjustably fixed to the rib fixing mechanism 4 via the slide rail assemblies, allowing the position of the first electromagnetic suction plate 41 to be adjusted according to the requirements of different rib specifications. The first electromagnetic suction plate 41 slides up and down within the slide rail assemblies and is tightened to maintain its position after sliding into position. This further enhances the applicability of the device, enabling it to meet the requirements of welding ribs on the rear end of the mixing drum subframe of varying specifications.

[0061] like Figure 1 、 Figures 4 to 7As shown, further, in a preferred embodiment, the rib fixing mechanism 4 includes a flip platform 42, a flip rod 43, a second connecting rod 44 and a second driving cylinder 45, two first electromagnetic suction plates 41 are installed on the flip platform 42, and the second driving cylinder 45 is arranged horizontally on the base 1. The upper end of the second connecting rod 44 is hingedly installed on the base 1, and the lower end is hinged to the flip rod 43. The front end of the flip rod 43 extends out of the base 1 for fixed connection with the flip platform 42, and the rear end of the flip rod 43 is hinged to the driving end of the second driving cylinder 45, so that when the second driving cylinder 45 pushes the flip rod 43 forward, the flip rod 43 drives the flip platform 42 to flip upward and into an upright state.

[0062] The design of the rib fixing mechanism 4 is simple and compact, which does not take up too much space. Secondly, it is specially designed for the special structure of the rear end of the mixing barrel sub-frame. It can be turned upward before operation so as not to hinder the placement of the platform plate 2. It can also be turned upward during operation to limit and support the two ribs, which is convenient for welding and fixing the two ribs and the rear plate. It can also be withdrawn when welding the front plate, so as not to hinder the welding and installation of the front plate.

[0063] like Figure 1 、 Figure 2 、 Figure 8 、 Figure 9 As shown, in a preferred embodiment, the side panel fixing mechanism 5 includes a third driving cylinder 51, a third connecting rod 52, a pressure rod 53, and a pressure block 54. The third driving cylinder 51 is arranged horizontally on the base 1. One end of the third connecting rod 52 is hinged to the base 1 and the other end is connected to the pressure rod 53. One end of the pressure rod 53 is hinged to the driving end of the third driving cylinder 51, and the other end is provided with a pressure block 54. During operation, the third driving cylinder 51 extends forward to push the pressure rod 53 upward and upright, so that the pressure block 54 is pressed against the side panel. The design of the side panel fixing mechanism 5 is simple and compact, not occupying excessive space. Secondly, it is specially designed for the special structure of the rear end of the mixing drum subframe. When the rear end of the mixing drum subframe is rotated and flipped for welding, the lower portion of the side panel will tightly contact the front panel, rear panel, and bottom panel, ensuring excellent welding results.

[0064] Furthermore, in a preferred embodiment, the flip mechanism 6 includes a stand 61 and a rotating arm 62. One end of the rotating arm 62 is mounted on the stand 61 via a vertical rotation drive assembly 63, so that the rotating arm 62 can rotate vertically under the drive of the vertical rotation drive assembly 63. The other end of the rotating arm 62 is provided with a horizontal rotation drive assembly 64. The base 1 is mounted on the rotating arm 62 via the horizontal rotation drive assembly 64. During welding operations, the vertical rotation drive assembly 63 and the horizontal rotation drive assembly 64 cooperate with each other to cause the base 1 to drive the workpiece to be welded to rotate vertically and / or horizontally, so that the gripper robot can grasp the workpiece and / or the welding robot can weld the workpiece. This special structural design can cooperate and support each other with the numerous limiting and fixing mechanisms on the aforementioned base 1: it is precisely because these limiting and fixing mechanisms ensure the fixation of multiple plates on the base 1 that the workpiece to be welded can be rotated vertically and / or horizontally. It is precisely because the workpiece to be welded can be rotated vertically and / or horizontally that the excellent welding effect is guaranteed, the floor space is small, and this group forms a highly efficient operation coordination between the welding device, welding robot, and gripper robot. The vertical rotation drive assembly 63 has various structural forms. For example, it can adopt the rotating gear plate design in the prior art. The rotating arm 62 is rotatably fixed to the stand 61 through the rotating gear plate. The stand 61 is equipped with a rotating motor. The drive shaft of the rotating motor is connected to the rotating arm 62 to drive the rotating arm 62 to rotate. Alternatively, other methods can be used, which will not be repeated here.

[0065] like Figure 16 As shown, the present invention also provides an automated welding system, comprising a welding robot 7, a gripper robot 8, and any of the above-described mixing drum subframe rear assembly welding devices. The gripper robot 8 is used to grasp the workpiece to be welded and transport it to the mixing drum subframe rear assembly welding device, and the welding robot 7 is used to weld the workpiece on the mixing drum subframe rear assembly welding device. Through the above-described configuration, the automated welding system of the present invention has a high degree of automation, occupies a small space, has good welding effects, and has high welding efficiency, greatly improving work efficiency and significantly reducing labor costs.

[0066] Although the present invention has been disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, utilize the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A mixing barrel sub-frame rear assembly welding device, used for working with a welding robot and a gripper robot, characterized in that: The invention comprises a flipping mechanism (6) and a base (1) mounted on the flipping mechanism (6), wherein the base (1) is used to fix a workpiece to be welded grasped by a gripper robot, and the flipping mechanism (6) is used to drive the base (1) to flip so that the welding robot can weld the workpiece. The upper part of the base (1) is provided with a platform plate (2) and a top plate fixing mechanism (3), wherein the platform plate (2) is used to carry the top plate to be welded and fix the top plate through the top plate fixing mechanism (3), and the front side of the base (1) is hinged with a rib plate fixing mechanism (4) that can be flipped up and down, and is used for turning the rib plate fixing mechanism (4) upward to the platform plate (2) when the rib plate fixing mechanism (4) is flipped upward. ) above, the two rib plates are adsorbed and limited on the top plate to facilitate the welding operation of the rib plate and the back plate by the welding robot. A side plate fixing mechanism (5) is provided on the left and right sides of the base (1) for limiting the side plates when welding the side plates so that the side plates can be kept limited when the flipping mechanism (6) drives the base (1) to flip; the top plate fixing mechanism (3) includes more than two positioning columns (32) protruding from the platform plate (2), and the positioning columns (32) are used to be inserted into the positioning holes on the top plate to position and limit the top plate on the platform plate (2); the top plate fixing mechanism (3) includes more than one movably arranged on the fixed A limit hook (33) is provided in the positioning column (32), the positioning column (32) is provided with an opening for pressing the top plate downward when the limit hook (33) is pressed into the opening, the middle portion of the limit hook (33) is hinged to the middle portion of the positioning column (32) via a first rotating shaft (331), the lower portion of the limit hook (33) extends below the platform plate (2) and is hinged to a first connecting rod (34), the lower end of the first connecting rod (34) is hinged to a driving end of a vertically arranged first driving cylinder (35), and is used to press the limit hook (33) downward into the opening when the first driving cylinder (35) pulls the first connecting rod (34) downward. Alternatively, when the first connecting rod (34) is pushed upward, the limit hook (33) is flipped upward to avoid blocking the top plate; the rib plate fixing mechanism (4) is provided with two symmetrically arranged first electromagnetic suction plates (41); when the rib plate fixing mechanism (4) is flipped upward to above the platform plate (2), the two first electromagnetic suction plates (41) respectively adsorb the two rib plates and limit them on the top plate; the rib plate fixing mechanism (4) is provided with two sets of slide rail assemblies; the first electromagnetic suction plates (41) are adjustably fixed to the rib plate fixing mechanism (4) through the slide rail assemblies, so as to adjust the position of the first electromagnetic suction plates (41) according to the requirements of rib plates of different specifications.

2. The mixing barrel sub-frame rear assembly welding device according to claim 1 is characterized in that: The top plate fixing mechanism (3) comprises one or more second electromagnetic suction plates (31) which are laid flat, and the second electromagnetic suction plates (31) are arranged close to the platform plate (2) and are used for sucking and limiting the top plate placed on the platform plate (2).

3. The mixing drum sub-frame rear assembly welding device according to claim 1 is characterized in that: The rib plate fixing mechanism (4) comprises a flipping platform (42), a flipping rod (43), a second connecting rod (44) and a second driving cylinder (45); the two first electromagnetic suction plates (41) are mounted on the flipping platform (42); the second driving cylinder (45) is arranged transversely on the base (1); the upper end of the second connecting rod (44) is hingedly mounted on the base (1) and the lower end is hingedly connected to the flipping rod (43); the front end of the flipping rod (43) extends out of the base (1) and is fixedly connected to the flipping platform (42); the rear end of the flipping rod (43) is hingedly connected to the driving end of the second driving cylinder (45) and is used to drive the flipping rod (43) to flip the flipping platform (42) upward to an upright state when the second driving cylinder (45) pushes the flipping rod (43) forward.

4. The mixing drum sub-frame rear assembly welding device according to claim 1 is characterized in that: The side plate fixing mechanism (5) comprises a third driving cylinder (51), a third connecting rod (52), a pressure rod (53) and a pressure block (54); the third driving cylinder (51) is arranged transversely on the base (1); one end of the third connecting rod (52) is hinged to the base (1) and the other end is connected to the pressure rod (53); one end of the pressure rod (53) is hinged to the driving end of the third driving cylinder (51) and the other end is provided with a pressure block (54); when in operation, the third driving cylinder (51) extends forward and is used to push the pressure rod (53) to flip upward to an upright state so that the pressure block (54) is pressed onto the side plate.

5. The mixing drum sub-frame rear assembly welding device according to claim 1 is characterized in that: The flip mechanism (6) comprises a stand (61) and a rotating arm (62); one end of the rotating arm (62) is mounted on the stand (61) via a vertical rotating drive assembly (63) so as to rotate the rotating arm (62) in a vertical direction under the drive of the vertical rotating drive assembly (63); the other end of the rotating arm (62) is provided with a horizontal rotating drive assembly (64); the base (1) is mounted on the rotating arm (62) via the horizontal rotating drive assembly (64); during welding operation, the vertical rotating drive assembly (63) and the horizontal rotating drive assembly (64) cooperate with each other so as to enable the base (1) to drive the workpiece to be welded to rotate in a vertical direction and / or a horizontal direction so as to facilitate the gripper robot to grip the workpiece and / or the welding robot to weld the workpiece.

6. An automated welding system, characterized in that: A welding robot (7) and a gripper robot (8) are provided, and also a mixing barrel sub-frame rear-end assembly welding device as claimed in any one of claims 1 to 5 is provided, the gripper robot (8) is used to grab the workpiece to be welded and transport it to the mixing barrel sub-frame rear-end assembly welding device, and the welding robot (7) is used to weld the workpiece on the mixing barrel sub-frame rear-end assembly welding device.

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