Large plastic thick plate butt welding machine

Abstract

The invention relates to the technical field of plastic hot plate welding, in particular to a large plastic thick plate butt welding machine which comprises a machine base, a set of butt welding devices are arranged in the middle of the top of the machine base in a lifting mode, and a set of heating plates are arranged between heating plate side supports on the two sides in a lifting mode. Two groups of movable welding tables I and movable welding tables II are arranged on the machine base corresponding to the two sides of the lower part of the butt welding device in a relatively moving manner; the two sets of self-adaptive fixing mechanisms are installed on the two sides of the butt welding device correspondingly, the main driving device is arranged on one side of the top of the machine base, the main driving device comprises a power base fixed to one side of the top of the machine base through a supporting frame, a driving assembly is installed at the bottom of the power base, and a rotating assembly is arranged at the top of the power base; the rotating assembly is rotationally connected with the driving assembly, and a rotating connecting piece I and a rotating connecting piece II are arranged between the driving assembly and the butt welding device and between the driving assembly and the self-adaptive fixing mechanism correspondingly. The butt welding is automatically operated, the operation is simple, and energy conservation and high efficiency are realized.

Description

Technical Field

[0001] The invention relates to the technical field of plastic hot plate welding, in particular to a large-scale plastic thick plate butt welding machine. Background Art

[0002] In recent years, plastic products have been widely used. The filter plates, the main accessories used in filter presses, are mainly plastic products. In addition to one-time molding of plastic products, they can also be formed by welding to increase the use area to meet more use conditions. When welding plastic plates, in general, butt welding machines are more commonly used.

[0003] Butt welding machine is a kind of equipment used for metal welding, which is mainly used to connect two metal workpieces together by heating and pressurizing. Butt welding machine is widely used in automobile manufacturing, construction, pipeline installation, metal processing and other industries.

[0004] The existing butt welding machines generally have the following problems when used for butt welding of large plastic thick plates: in most cases, manual participation is required for the feeding of plastic plates and the discharging of materials after welding. The corresponding power systems are required to control the movement of plastic plates, the lifting of heating plates, and the lifting and movement of fixing devices. There is a lack of effective connection between them, resulting in high energy consumption during processing and operation, and insufficient linkage between various programs, which affects the welding speed and efficiency of plastic thick plates;

[0005] Therefore, in view of the above-mentioned problems, the present technical solution proposes a large-scale plastic thick plate butt welding machine. Summary of the invention

[0006] The purpose of the present invention is to provide a large-scale plastic thick plate butt welding machine to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a large plastic thick plate butt welding machine, comprising a machine base, a group of butt welding devices are arranged in a lifting manner in the middle of the top of the machine base, the butt welding devices include heating plate side brackets fixed on the two side walls of the machine base, and a group of heating plates are arranged in a lifting manner between the heating plate side brackets on both sides;

[0008] Two sets of mobile welding tables I and II are relatively movable on the corresponding machine bases at both sides of the lower part of the butt welding device. Large plastic thick plates to be welded are placed on the tops of the mobile welding tables I and II. The plastic thick plates moved to the lower side of the heating plate are first heated and melted by the heating plate, and then the heating plate is raised, and the mobile welding tables I and II are moved again to contact and weld the melted side walls of the plastic thick plates;

[0009] The adaptive fixing mechanism is provided with two groups, which are respectively installed on both sides of the butt welding device, and are used for adaptive rolling and pressing and positioning of the plastic thick plate. Since the plastic thick plates on both sides need to move twice during butt welding, that is, after the first rolling and pressing and positioning, the plastic thick plates are synchronously rolled along the upper surface of the plastic thick plates by using their rolling contact during the second movement of the plastic thick plates, that is, they are kept in real-time pressing and positioning;

[0010] The main driving device is arranged on one side of the top of the machine base, and is used to drive the relative movement of the mobile welding table I and the mobile welding table II, and the lifting and lowering of the butt welding device and the adaptive fixing mechanism. The main driving device includes a power base fixed on one side of the top of the machine base through a support frame. A driving component is installed at the bottom of the power base, and a rotating component is arranged on the top. The rotating component is rotatably connected with the driving component. The driving component controls the relative movement of the mobile welding table I and the mobile welding table II by telescopic operation, and synchronously drives the rotating component to rotate. A rotating connecting member I and a rotating connecting member II are respectively arranged between the driving component and the butt welding device and the adaptive fixing mechanism. When the driving component rotates, the rotating connecting member I is used to drive the butt welding device to rise and fall, so as to control the heating plate to heat and melt the side walls of the plastic thick plates on both sides, and the rotating connecting member II is used to drive the adaptive fixing mechanisms on both sides to roll, press and position the plastic thick plates on the lower side, so as to realize linear operation to control the transfer of the plastic thick plates, and at the same time, the linear motion is converted into rotational motion to control the lifting and lowering of the butt welding device and the adaptive fixing mechanism.

[0011] Among them, the two large plastic thick plates to be butt-welded are respectively placed on the mobile welding table Ⅰ and the mobile welding table Ⅱ on both sides, and the driving assembly is started to drive the mobile welding table Ⅰ and the mobile welding table Ⅱ to approach each other. At this time, the rotating assembly is rotated by force, and then under the connection of the rotating connector Ⅰ and the rotating connector Ⅱ, the side walls of the plastic thick plates on both sides and the heating plate, the three are moved synchronously until the heating plate and the side walls of the heating plate are in contact with the side walls of the plastic thick plates on both sides at the same time. At the same time, under the control of the rotating connector Ⅱ, the adaptive fixing mechanism also descends synchronously to position the plastic thick plates by rolling contact, and then heat and melt the side walls of the plastic thick plates. After the melting is completed, the driving assembly drives the mobile welding table Ⅰ and the mobile welding table Ⅱ to continue to approach. At this time, the butt welding device is driven by force to lift the heating plate under the action of the rotating connector Ⅰ. Since the two sides of the plastic thick plate are in a molten state, the heating plate can be easily The two sides rise and separate, and then the adaptive fixing mechanism presses and rolls along the top of the plastic thick plate until the side walls of the plastic thick plates on both sides are in contact for welding. At this time, the driving component drives the mobile welding table I and the mobile welding table II to move close to each other to the maximum extent. After the butt welding is completed, the driving component continues to run in the reverse direction to drive the mobile welding table I and the mobile welding table II to move back. At this time, the adaptive fixing mechanism rises to release the pressure on the plastic thick plate. At this time, the plastic thick plates on both sides are butt-welded as a whole. With the separation of the mobile welding table I and the mobile welding table II, the plastic thick plate will also move toward one side, so as to automatically output it, thereby realizing the use of a single set of driving structure to simultaneously control the lifting and lowering of the heating plate, the movement of the mobile welding table I and the mobile welding table II, the lifting and lowering of the adaptive fixing mechanism, and the automated butt welding operation of the plastic thick plate, thereby realizing the energy-saving and efficient operation mode of the butt welding machine.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: by setting a group of hydraulic cylinders for telescopic operation, cooperating with the telescopic rod II, telescopic rod I, external side rack, internal side rack and spur gear designed around, the relative movement of mobile welding table I and mobile welding table II is controlled, and then the plastic thick plate is controlled to be fed and discharged, and then the rotating component is cooperated again to convert the telescopic operation part of the hydraulic cylinder into rotational motion, and then the rotational kinetic energy is used to lift the heating plate and the pressure positioning roller, and the effective cooperation between the structures is utilized to accurately control the precise positioning, heating, welding and transfer of the plastic thick plate, and the whole process is automated to realize the high-efficiency and energy-saving operation mode of the welding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a first-person structural diagram of a large plastic thick plate butt welding machine.

[0014] Figure 2 It is a second-view structural schematic diagram of a large plastic thick plate butt welding machine.

[0015] Figure 3The diagram is a top view of the structure of a large plastic thick plate butt welding machine.

[0016] Figure 4 The figure is a schematic diagram of the main structure of a large plastic thick plate butt welding machine.

[0017] Figure 5 for Figure 1 Schematic diagram of the enlarged structure of A.

[0018] Figure 6 for Figure 2 Schematic diagram of the enlarged structure of B.

[0019] Figure 7 for Figure 1 Schematic diagram of the enlarged structure of C in the figure.

[0020] Figure 8 for Figure 1 Schematic diagram of the enlarged structure of D in the figure.

[0021] Fig. 9 for Figure 1 Schematic diagram of the enlarged structure of E;

[0022] Among them: machine base 10, mobile welding table I 11, mobile welding table II 12, power base 13, hydraulic cylinder 14, outrigger 15, heating plate 16, heating plate side bracket 17, fixed connecting rod 18, nut 19, screw 20, telescopic rod positioning base block 21, connecting plate II 22, connecting plate I 23, hydraulic rod 24, telescopic rod II 25, telescopic rod I 26, external side rack 27, internal side rack 28, spur gear 29, main rotating shaft 30, bevel gear I 31, bevel gear II 32, connecting rod 33, bevel Gear III 34, bevel gear IV 35, support shaft 36, transmission belt I 37, L-shaped support sleeve rod 38, U-shaped bracket 39, pressure fixing part lifting base plate 40, connecting column 42, pressure positioning roller 43, sleeve 44, slider 45, slide rail 46, drive gear 47, incomplete tooth plate 48, bevel gear V 50, bevel gear VI 51, bevel gear VII 52, transmission belt II 53, bevel gear VIII 54, bevel gear IX 55, transmission belt III 56, transmission belt IV 57, transmission shaft 58, shaft rod 59, suction cup 60. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0027] See also Figure 1-Figure 4 A large plastic thick plate butt welding machine comprises a machine base 10, a group of butt welding devices are arranged in a lifting manner at the top middle of the machine base 10, the butt welding devices include heating plate side brackets 17 fixed on the two side walls of the machine base 10, and a group of heating plates 16 are arranged between the heating plate side brackets 17 on both sides;

[0028] Two sets of mobile welding tables Ⅰ11 and mobile welding tables Ⅱ12 are relatively movable on the corresponding machine bases 10 at both sides of the lower part of the butt welding device. Large plastic thick plates to be welded are placed on the tops of the mobile welding tables Ⅰ11 and Ⅱ12. The plastic thick plates moved to the lower side of the heating plate 16 are first heated and melted by the heating plate 16, and then the heating plate 16 is raised, and the mobile welding tables Ⅰ11 and Ⅱ12 are moved again to contact and weld the melted side walls of the plastic thick plates;

[0029] The adaptive fixing mechanism is provided with two groups, which are respectively installed on both sides of the butt welding device, and are used for adaptive rolling and pressing and positioning of the plastic thick plate. Since the plastic thick plates on both sides need to move twice during butt welding, that is, after the first rolling and pressing and positioning, the plastic thick plates are synchronously rolled along the upper surface of the plastic thick plates by using their rolling contact during the second movement of the plastic thick plates, that is, they are kept in real-time pressing and positioning;

[0030] The main driving device is arranged on one side of the top of the machine base 10, and is used to drive the relative movement of the mobile welding table I11 and the mobile welding table II12, and the lifting and lowering of the welding device and the adaptive fixing mechanism. The main driving device includes a power base 13 fixed on one side of the top of the machine base 10 through a support frame. A driving component is installed at the bottom of the power base 13, and a rotating component is arranged on the top. The rotating component is rotatably connected with the driving component. The driving component uses telescopic operation to control the relative movement of the mobile welding table I11 and the mobile welding table II12, and synchronously drives the rotating component to rotate. A rotating connecting member I and a rotating connecting member II are respectively arranged between the driving component and the welding device and the adaptive fixing mechanism. When the driving component rotates, the rotating connecting member I is used to drive the welding device to rise and fall, so as to control the heating plate 16 to heat and melt the side walls of the plastic thick plates on both sides, and the rotating connecting member II is used to drive the adaptive fixing mechanisms on both sides to roll and press and position the plastic thick plates on the lower sides, so as to realize linear operation to control the transfer of the plastic thick plates, and at the same time, the linear motion is converted into rotational motion to control the lifting and lowering of the welding device and the adaptive fixing mechanism.

[0031] Among them, the two large plastic thick plates to be butt-welded are respectively placed on the movable welding table Ⅰ11 and the movable welding table Ⅱ12 on both sides, and the driving assembly is started to drive the movable welding table Ⅰ11 and the movable welding table Ⅱ12 to approach each other. At this time, the rotating assembly is rotated by force, and then under the connection of the rotating connector Ⅰ and the rotating connector Ⅱ, the side walls of the plastic thick plates on both sides and the heating plate 16, the three move synchronously until the heating plates on both sides of the heating plate 16 are in contact with the side walls of the plastic thick plates on both sides at the same time. At the same time, under the control of the rotating connector Ⅱ, the adaptive fixing mechanism also descends synchronously to position the plastic thick plates by rolling contact, and then heat and melt the side walls of the plastic thick plates. After the melting is completed, the driving assembly drives the movable welding table Ⅰ11 and the movable welding table Ⅱ12 to continue to approach. At this time, the butt welding device is driven by force to drive the heating plate 16 to rise under the action of the rotating connector Ⅰ. Since the two sides of the plastic thick plates are in a molten state, the heating plate 16 can be easily It rises and separates from both sides, and then the adaptive fixing mechanism presses and rolls along the top of the plastic thick plate until the side walls of the plastic thick plates on both sides are in contact for welding. At this time, the driving component drives the mobile welding platform Ⅰ11 and the mobile welding platform Ⅱ12 to move close to each other to the maximum extent. After the butt welding is completed, the driving component continues to run in the reverse direction to drive the mobile welding platform Ⅰ11 and the mobile welding platform Ⅱ12 to move back. At this time, the adaptive fixing mechanism rises to release the pressure on the plastic thick plate. At this time, the plastic thick plates on both sides are butt-welded as a whole. With the separation of the mobile welding platform Ⅰ11 and the mobile welding platform Ⅱ12, the plastic thick plate will also move toward one side, so as to automatically output it, thereby realizing the use of a single set of driving structure to simultaneously control the lifting and lowering of the heating plate 16, the movement of the mobile welding platform Ⅰ11 and the mobile welding platform Ⅱ12, the lifting and lowering of the adaptive fixing mechanism, and the automated butt welding operation of the plastic thick plate, thereby realizing the energy-saving and efficient operation mode of the butt welding machine.

[0032] In the embodiment of the present invention, a plurality of legs 15 are fixedly installed at the four corners of the bottom of the base 10 to support the base 10 stably;

[0033] In order to keep the plastic thick plates on both sides from being melted and welded together, as the mobile welding table I11 and the mobile welding table II12 move away from each other, the plastic thick plates can be output along the mobile welding table II12 away from the power base 13, by evenly arranging multiple groups of suction cups 60 on the top of the mobile welding table II12, the suction cups 60 can be used to absorb the bottom of the plastic thick plates, so as to ensure that the plastic thick plates can be moved out along with the mobile welding table II12 after being positioned by the urban adaptive fixing mechanism;

[0034] Among them, for the heating plate 16, its two sides are set as heating surfaces, and the width of the heating surface is greater than the width of the side wall of the plastic thick plate to ensure that both sides of the plastic thick plate are fully heated and melted. Slide bars are installed at both ends of the heating plate 16, and a longitudinal slide groove is opened on the side wall of the heating plate side bracket 17 corresponding to the slide bar. The slide bar moves along the longitudinal slide groove to ensure smooth lifting and lowering when driven by the rotating connection member I.

[0035] In one embodiment of the present invention, see Figure 1 , Figure 2 , Figure 6 The driving assembly includes a hydraulic cylinder 14 fixedly installed on one side of the middle of the bottom of the power base 13, and the output end of the hydraulic cylinder 14 is connected to a hydraulic rod 24. At the same time, a connecting plate Ⅱ22 and a connecting plate Ⅰ23 are fixedly installed in the middle of the bottom of the mobile welding platform Ⅰ11 and the mobile welding platform Ⅱ12, respectively. The end of the hydraulic rod 24 is fixedly connected to the middle of the side wall of the connecting plate Ⅱ22, that is, by starting the hydraulic cylinder 14, the hydraulic rod 24 is driven to extend and retract, thereby driving the mobile welding platform Ⅰ11 to move horizontally. The bottom of the power base 13 on both sides of the hydraulic cylinder 14 is symmetrically provided with two groups of power steering parts, and the power steering parts The power steering member extends toward the direction of the mobile welding table Ⅰ11 and the mobile welding table Ⅱ12. The power steering member includes two sets of telescopic rods Ⅱ25 and telescopic rods Ⅰ26 distributed in parallel with the hydraulic rod 24. The telescopic rods Ⅱ25 and Ⅰ26 are both installed with telescopic rod positioning blocks 21 at the bottom ends of the power base 13. The telescopic rods Ⅱ25 and Ⅰ26 move through the telescopic rod positioning blocks 21 to maintain the stable horizontal movement of the telescopic rods Ⅱ25 and Ⅰ26. One end of the telescopic rod Ⅰ26 moves toward the mobile welding table Ⅱ12 and passes through the end of the mobile welding table Ⅰ11 to be fixedly connected. To the side wall of the mobile welding table II 12, the end of the telescopic rod II 25 facing the mobile welding table I 11 is fixed on the side wall of the mobile welding table I 11, and the telescopic rod II 25 and the telescopic rod I 26 located between the telescopic rod positioning base blocks 21 on both sides are respectively fixedly installed with an internal side rack 28 and an external side rack 27, and a group of spur gears 29 are meshed between the external side rack 27 and the internal side rack 28, and the top of the spur gear 29 is rotatably arranged at the bottom of the power base 13, that is, when the hydraulic cylinder 14 operates to control the hydraulic rod 24 to extend and retract, as the mobile welding table I 11 moves back and forth horizontally The telescopic rod Ⅰ26 is driven to move in the opposite direction by the engagement of the spur gear 29 with the external side rack 27, and then the fixed connection between the telescopic rod Ⅰ26 and the mobile welding table Ⅱ12 is utilized to control the relative movement of the mobile welding table Ⅰ11 and the mobile welding table Ⅱ12. Meanwhile, the spur gear 29 is in a rotating state, and the top of the spur gear 29 moves through the power base 13 to be connected with the rotating assembly, so as to partially convert the telescopic linear motion of the hydraulic cylinder 14 into the rotational motion of the rotating assembly.

[0036] As a preferred embodiment of the present invention, refer to Figure 1 The rotating assembly includes a main rotating shaft 30 fixedly connected to the top of the spur gear 29, a bevel gear I 31 is installed on the top of the main rotating shaft 30, a bevel gear II 32 is vertically meshed on one side of the bevel gear I 31, a connecting rod 33 is connected to the side of the bevel gear II 32 facing the heating plate 16, a bevel gear III 34 is installed on the end of the connecting rod 33, a bevel gear IV 35 is vertically meshed on one side of the bevel gear III 34, and the bottom of the bevel gear IV 35 is rotatably supported by a support shaft 36, that is, when the nut 19 rotates, the main rotating shaft 30 is driven to rotate synchronously, and then the support shaft 36 is driven to rotate under the rotation connection of the bevel gear I 31, the bevel gear II 32, the connecting rod 33, the bevel gear III 34, and the bevel gear IV 35, and the support shaft 36 is rotatably connected with the rotating connector I and the rotating connector II.

[0037] As a preferred embodiment of the present invention, refer to Figure 1-Figure 4 The rotating connecting member I includes a fixed connecting rod 18 installed on the side of the heating plate 16 facing the power base 13, a nut 19 is connected to the top of the fixed connecting rod 18, a vertical lead screw 20 is threadedly connected to the middle of the nut 19, and a guide device for limiting its rotation is provided on the nut 19. Guide rods are installed at both ends of the lead screw 20, and the top guide rod is supported and positioned by an L-shaped support sleeve rod 38. The top guide rod is rotationally connected to the support shaft 36 on the corresponding side through a transmission belt I37. By setting the tooth groove direction of the lead screw 20 and the length of the lead screw 20, it is ensured that under the rotation connection of the transmission belt I37, when the lead screw 20 is controlled to rotate, the connection with the nut 19 and the fixed connecting rod 18 can be coordinated to control the heating plate 16 to accurately lift and move between the side walls of the thick plastic plates on both sides.

[0038] As a preferred embodiment of the present invention, refer to Figure 1-Figure 4 , Figure 7 , Figure 8 The adaptive fixing mechanism includes a plurality of groups of pressure positioning rollers 43 distributed in parallel, roller shafts are installed at both ends of the pressure positioning rollers 43, and a group of shaft sleeves 44 with a triangular structure are commonly sheathed between the roller shafts on the same side, and a pressure fixing part lifting base plate 40 is commonly connected between the tops of the shaft sleeves 44 at both ends through a connecting column 42, and a U-shaped bracket 39 is slidably connected to the outside of the pressure fixing part lifting base plate 40 on both sides, and one side of the bottom end of the U-shaped bracket 39 is fixed on the machine base 10, and a slide rail 46 is provided on the side wall of the U-shaped bracket 39 facing the side of the pressure fixing part lifting base plate 40, and a slider 45 is installed on the side wall of the pressure fixing part lifting base plate 40 corresponding to the slide rail 46, and the slider 45 slides longitudinally along the slide rail 46 to keep the lifting and lowering of the pressure fixing part lifting base plate 40, thereby controlling the rolling pressure holding and positioning of the plastic thick plate by the pressure positioning roller 43;

[0039] A lifting assembly is provided on the side of the pressure fixing member lifting base plate 40 facing the heating plate 16. The lifting assemblies on both sides are rotatably connected, and the lifting assembly on the side close to the power base 13 is rotatably connected to the rotating connection member II, that is, under the operation of the rotating connection member II, the lifting assembly is controlled to drive the pressure positioning roller 43 to move up and down, so as to position the plastic thick plate. The lifting assembly has an adaptive pressing function, that is, when the plastic thick plate is pressed once, it is contacted and positioned. As the plastic thick plates on both sides continue to approach, the longitudinal pressing force of the lifting assembly on the plastic thick plate remains unchanged;

[0040] Specifically, the lifting assembly includes an incomplete tooth plate 48 installed on the side wall of the pressure fixing lifting base plate 40 facing the heating plate 16, and a driving gear 47 is meshed on one side of the incomplete tooth plate 48. Wheel rods are installed at both ends of the driving gear 47, and a positioning rod is mounted on the wheel rod. The end of the positioning rod is fixed on the adjacent U-shaped bracket 39. The driving gears 47 on both sides are symmetrically distributed. A group of transmission shafts 58 are arranged above the heating plate 16 between the driving gears 47 on both sides. The transmission shaft 58 and the wheel rods on the driving gears 47 on both sides are rotationally connected through transmission belts III 56 and transmission belts IV 57 respectively. One end of the transmission shaft 58 is connected to a shaft rod 59, and the bottom of the shaft rod 59 is fixed to the heating plate side bracket 17 through a bracket;

[0041] It should be noted that the top of the incomplete tooth plate 48 is set as an area without tooth grooves. When the driving gear 47 moves the incomplete tooth plate 48 downward to the area, the driving gear 47 is in an idling state and the tooth groove at the top is moved, that is, a stable downward pressure is maintained on the incomplete tooth plate 48.

[0042] In order to keep the driving gears 47 on both sides rotating in opposite directions, and then cooperate with the incomplete tooth plate 48 to drive the pressure fixing part to lift the pressure positioning roller 43 at the bottom of the base plate 40 to roll and press the plastic thick plate, a group of steering connectors are arranged on the wheel rod on the driving gear 47 on the side close to the power base 13, and the steering connector is rotatably connected with the rotating connector II, and the rotating connector II drives the wheel rod to rotate, and then cooperates with the transmission belt III 56, the transmission belt IV 57, and the transmission shaft 58 to drive the driving gear 47 on the opposite side to rotate in the same direction, and then under the action of the steering connector, the driving gear 47 on the side adjacent to the power base 13 is driven to rotate in the opposite direction to the rotating connector II, so as to realize the same-direction lifting and lowering of the pressure positioning rollers 43 on both sides;

[0043] The steering connecting member includes two sets of bevel gears V50 and bevel gears VII52 installed on the driving gear 47 and distributed in parallel with each other. A set of bevel gears VI51 is meshed between the bevel gears V50 and VII52. A connecting guide rod is installed on the side of the bevel gear VII52 away from the bevel gear V50. The connecting guide rod is rotationally connected with the rotating connecting member II, that is, the connecting guide rod is rotated in the opposite direction to the bevel gear V50 by utilizing the rotation connection between the bevel gear V50, the bevel gear VI51 and the bevel gear VII52, and then the driving gear 47 is driven to rotate.

[0044] Specifically, one side of the bevel gear VI 51 is positioned by a support rod.

[0045] As a preferred embodiment of the present invention, refer to Figure 1-Figure 4 , Figure 5 , Fig. 9 The rotating connecting member II includes a transmission belt II 53 rotatably connected to the connecting guide rod, the end of the transmission belt II 53 is connected to a gear shaft, one side of the gear shaft is connected to a bevel gear VIII 54, and one side of the bevel gear VIII 54 is vertically meshed with a bevel gear IX 55 fixed on the support shaft 36. When the support shaft 36 rotates, the bevel gear IX 55 is driven to rotate synchronously, and then the bevel gear VIII 54 is controlled to rotate, and then the connecting guide rod is driven to rotate under the transmission of the transmission belt II 53, thereby cooperating with the steering connecting member, the transmission belt III 56, the transmission belt IV 57, the transmission shaft 58 and the like are connected, driving the pressure positioning rollers 43 on both sides to rise and fall synchronously, thereby realizing the rolling positioning of the thick plastic plate.

[0046] The working principle of the present invention is: in the idle position of the device, all the driving parts mentioned above, which refer to the power elements, electrical components and the adapted power supply, are connected through wires, and the electrical connection is completed in a sequential working order between the electrical components. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process, and does not explain the electrical control. During operation, the two large plastic thick plates to be butt-welded are respectively placed on the mobile welding table Ⅰ11 and the mobile welding table Ⅱ12 on both sides, the hydraulic cylinder 14 is started to extend, and then the mobile welding table is gradually driven under the connection of the hydraulic rod 24, the telescopic rod Ⅱ25 and the telescopic rod Ⅰ26. Ⅰ11, move the welding table Ⅱ12 to each other, and at the same time, the spur gear 29 is driven to rotate under the movement of the external side rack 27 and the internal side rack 28. At this time, the main rotating shaft 30 is controlled to rotate, and then the screw 20 is driven to rotate in conjunction with the rotation connection of the bevel gear Ⅰ31, the bevel gear Ⅱ32, the connecting rod 33, the bevel gear Ⅲ34, the bevel gear Ⅳ35, and the transmission belt Ⅰ37, and then the nut 19 is controlled to drive the heating plate 16 to descend until the side wall of the plastic thick plate contacts and melts on both sides of the heating plate 16. At this time, the hydraulic cylinder 14 stops. In this process, the bevel gear Ⅸ55, the bevel gear Ⅷ54, the transmission belt Ⅱ53, the bevel gear Ⅶ52, Under the transmission connection of bevel gear VI 51, bevel gear V 50, transmission belt III 56, transmission belt IV 57 and transmission shaft 58, the driving gears 47 on both sides are controlled to mesh and rotate with the incomplete tooth plate 48, and the pressure positioning roller 43 at the bottom of the pressure fixing part lifting base plate 40 is controlled to contact with the top of the plastic thick plate, and the plastic thick plate is rolled and pressed to fix it. At this time, the plastic thick plates on both sides are stably heated. After heating and melting, the hydraulic cylinder 14 continues to extend. At this time, the driving gear 47 is used to contact the position of the top of the incomplete tooth plate 48 that does not contain the tooth groove. The driving gear 47 is in a rotating state, and the incomplete tooth plate 48 is kept under continuous downward pressure. At the same time, the nut 19 will rise up, and when the heating plate 16 is separated from the side walls of the plastic thick plates on both sides, the side walls on both sides contact each other for docking, and in this process, the pressure positioning roller 43 applies rolling pressure to the top of the plastic thick plate. After the hydraulic cylinder 14 extends to the maximum distance, the plastic thick plates on both sides are fully docked, and then the hydraulic cylinders 14 on both sides begin to shrink, and the heating plate 16 continues to move upward. At the same time, the pressure positioning roller 43 also rises synchronously, and then the mobile welding table I11 and the mobile welding table II12 begin to separate. At this time, the plastic thick plates on both sides are welded together, and with the positioning of the suction cup 60, the plastic thick plates are output along the mobile welding table II12.

[0047] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A large plastic thick plate butt welding machine, characterized in that: The machine base (10) comprises a machine base (10), a group of butt welding devices are arranged in a lifting manner at the top middle of the machine base (10), the butt welding devices include heating plate side brackets (17) fixed on the two side walls of the machine base (10), and a group of heating plates (16) are arranged in a lifting manner between the heating plate side brackets (17) on both sides; Two sets of movable welding tables I (11) and movable welding tables II (12) are relatively movably arranged on the corresponding machine bases (10) at both sides of the lower part of the butt welding device; The adaptive fixing mechanism has two groups, which are respectively installed on both sides of the butt welding device and are used for adaptive rolling, pressing and positioning of the plastic thick plate; A main driving device is arranged on one side of the top of the machine base (10) and is used to drive the relative movement of the mobile welding table I (11) and the mobile welding table II (12), and the lifting and lowering of the butt welding device and the adaptive fixing mechanism. The main driving device includes a power base (13) fixed to one side of the top of the machine base (10) through a support frame. A driving component is installed at the bottom of the power base (13), and a rotating component is arranged on the top. The rotating component is rotatably connected to the driving component. A rotating connecting member I and a rotating connecting member II are respectively arranged between the driving component and the butt welding device and the adaptive fixing mechanism. When the driving component rotates, the rotating connecting member I is used to drive the butt welding device to lift and lower, thereby controlling the heating plate (16) to heat and melt the side walls of the plastic thick plates on both sides, and the rotating connecting member II is used to drive the adaptive fixing mechanisms on both sides to roll, press and position the plastic thick plates below.

2. A large plastic thick plate butt welding machine according to claim 1, characterized in that: A plurality of groups of suction cups (60) are evenly arranged on the top of the movable welding platform II (12).

3. A large plastic thick plate butt welding machine according to claim 2, characterized in that: Slide bars are installed at both ends of the heating plate (16), and a longitudinal slide groove is provided on the side wall of the heating plate side bracket (17) corresponding to the slide bar, and the slide bar moves along the longitudinal slide groove.

4. A large plastic thick plate butt welding machine according to claim 3, characterized in that: The driving assembly comprises a hydraulic cylinder (14) fixedly mounted on one side of the middle part of the bottom of the power base (13); the output end of the hydraulic cylinder (14) is connected to a hydraulic rod (24); a connecting plate II (22) and a connecting plate I (23) are respectively fixedly mounted on the middle part of the bottom of the mobile welding platform I (11) and the mobile welding platform II (12); the end of the hydraulic rod (24) is fixedly connected to the middle part of the side wall of the connecting plate II (22); two groups of power steering components are symmetrically arranged on the bottom of the power base (13) on both sides of the hydraulic cylinder (14); the power steering components extend toward the mobile welding platform I (11) and the mobile welding platform II (12); The power steering component comprises two groups of telescopic rods II (25) and telescopic rods I (26) which are distributed in parallel with the hydraulic rod (24). The two ends of the bottom of the power base (13) corresponding to the telescopic rods II (25) and the telescopic rods I (26) are both installed with telescopic rod positioning blocks (21). The telescopic rods II (25) and the telescopic rods I (26) move through the telescopic rod positioning blocks (21). One end of the telescopic rod I (26) moves through the end of the mobile welding table I (11) toward the mobile welding table II (12) and is fixedly connected to the mobile welding table. On the side wall of the platform II (12), the end of the telescopic rod II (25) facing the movable welding platform I (11) is fixed on the side wall of the movable welding platform I (11), and the telescopic rod II (25) and the telescopic rod I (26) located between the telescopic rod positioning base blocks (21) on both sides are respectively fixedly installed with an internal side rack (28) and an external side rack (27), and a group of spur gears (29) are meshed between the external side rack (27) and the internal side rack (28), and the top of the spur gear (29) is rotatably arranged at the bottom of the power base (13).

5. A large plastic thick plate butt welding machine according to claim 4, characterized in that: The rotating assembly comprises a main rotating shaft (30) fixedly connected to the top of the spur gear (29), a bevel gear I (31) is installed at the top of the main rotating shaft (30), a bevel gear II (32) is vertically meshed with one side of the bevel gear I (31), a connecting rod (33) is connected to the side of the bevel gear II (32) facing the heating plate (16), a bevel gear III (34) is installed at the end of the connecting rod (33), a bevel gear IV (35) is vertically meshed with one side of the bevel gear III (34), and the bottom of the bevel gear IV (35) is rotatably supported by a support shaft (36).

6. A large plastic thick plate butt welding machine according to claim 5, characterized in that: The rotating connecting member I comprises a fixed connecting rod (18) installed on the side of the heating plate (16) facing the power base (13), the top of the fixed connecting rod (18) is connected with a nut (19), the middle of the nut (19) is threadedly connected with a vertical lead screw (20), the nut (19) is provided with a guide device for limiting its rotation, guide rods are installed at both ends of the lead screw (20), the top guide rod is supported and positioned by an L-shaped support sleeve rod (38), and the top guide rod is rotationally connected to the support shaft (36) on the corresponding side by a transmission belt I (37).

7. A large plastic thick plate butt welding machine according to claim 6, characterized in that: The adaptive fixing mechanism comprises a plurality of groups of pressure positioning rollers (43) arranged in parallel, roller shafts being installed at both ends of the pressure positioning rollers (43), a group of shaft sleeves (44) in a triangular structure being installed between the roller shafts on the same side, a pressure fixing part lifting base plate (40) being connected to the tops of the shaft sleeves (44) at both ends through a connecting column (42), a U-shaped bracket (39) being slidably connected to the outside of the pressure fixing part lifting base plate (40) on both sides respectively, one side of the bottom end of the U-shaped bracket (39) being fixed on the machine base (10), a slide rail (46) being provided on the side wall of the U-shaped bracket (39) facing the side of the pressure fixing part lifting base plate (40), a slider (45) being installed on the side wall of the pressure fixing part lifting base plate (40) corresponding to the slide rail (46), and the slider (45) slidingly sliding along the slide rail (46); A lifting assembly is provided on the side of the pressure fixing part lifting base plate (40) facing the heating plate (16), the lifting assemblies on both sides are rotatably connected to each other, and the lifting assembly on the side close to the power base (13) is rotatably connected to the rotating connection member II.

8. A large plastic thick plate butt welding machine according to claim 7, characterized in that: The lifting assembly comprises an incomplete tooth plate (48) installed on the side wall of the pressure fixing member lifting base plate (40) facing the heating plate (16), one side of the incomplete tooth plate (48) is meshed with a driving gear (47), both ends of the driving gear (47) are equipped with wheel rods, and the wheel rods are sleeved with positioning rods, and the ends of the positioning rods are fixed on adjacent U-shaped brackets (39). The driving gears (47) on both sides are symmetrically distributed, and a group of transmission shafts (58) are arranged above the heating plate (16) between the driving gears (47) on both sides. The transmission shaft (58) and the wheel rods on the driving gears (47) on both sides are rotationally connected through transmission belts III (56) and transmission belts IV (57) respectively. One end of the transmission shaft (58) is connected to a shaft rod (59), and the bottom of the shaft rod (59) is fixed to the heating plate side bracket (17) through a bracket.

9. A large plastic thick plate butt welding machine according to claim 8, characterized in that: A group of steering connecting members are arranged on the wheel rod on the driving gear (47) close to one side of the power base (13), and the steering connecting members are rotatably connected with the rotating connecting member II; The steering connecting member comprises two sets of bevel gears V (50) and bevel gears VII (52) which are arranged in parallel and spaced apart from each other and which are mounted on the driving gear (47); a set of bevel gears VI (51) is meshed between the bevel gears V (50) and the bevel gears VII (52); a connecting guide rod is mounted on a side of the bevel gear VII (52) away from the bevel gear V (50); and the connecting guide rod is rotatably connected to the rotating connecting member II.

10. A large plastic thick plate butt welding machine according to claim 9, characterized in that: The rotating connecting member II comprises a transmission belt II (53) rotatably connected to the connecting guide rod, the end of the transmission belt II (53) is connected to a gear shaft, one side of the gear shaft is connected to a bevel gear VIII (54), and one side of the bevel gear VIII (54) is vertically meshed with a bevel gear IX (55) fixed on the support shaft (36).

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