Prefabricated Plastic Pallet Welding Device and Method

Abstract

The present invention relates to the technical field of pallet welding, and particularly to an assembled plastic pallet welding device. Its technical solution includes a welding mechanism and a precise positioning mechanism. An adsorption mechanism is provided above the welding mechanism, a support mechanism is provided below the welding mechanism, a measurement telescopic mechanism and a measurement rotary device are provided on the lower surface of the adsorption mechanism, a limit telescopic mechanism and a limit rotary device are provided on the upper surface of the support mechanism. The precise positioning mechanism includes a precise positioning male head and a precise positioning female head. A limit sliding device is provided inside the precise positioning female head. The precise positioning male head is provided on the lower surface of the measurement telescopic mechanism, and the precise positioning female head is provided on the upper surface of the limit telescopic mechanism. The present invention realizes the positioning and alignment of the upper cover and the base through the measurement telescopic mechanism and the limit telescopic mechanism, and checks the alignment situation of the upper cover and the base through the precise positioning male head and the precise positioning female head, preventing the occurrence of inaccurate welding. The welding height is also adjusted through the limit sliding device, improving the accuracy of welding.

Description

Technical Field

[0001] The present invention relates to the technical field of pallet welding, and particularly to an assembly plastic pallet welding device and method. Background Art

[0002] Plastic pallets are widely used in the storage, loading, and handling of goods, and are one of the essential logistics equipment in modern logistics warehousing. At present, the welding technology of plastic pallets is relatively mature. However, the existing plastic pallet welding technology needs to be improved in terms of the positioning and alignment of the upper cover and the base.

[0003] In view of this, we propose an assembly plastic pallet welding device and method to solve the existing problems. Summary of the Invention

[0004] The purpose of the present invention is to provide an assembly plastic pallet welding device and method to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An assembly plastic pallet welding device includes a welding mechanism and a precise positioning mechanism. An adsorption mechanism is provided above the welding mechanism, a support mechanism is provided below the welding mechanism, a measurement telescopic mechanism and a measurement rotary device are provided on the lower surface of the adsorption mechanism, a limit telescopic mechanism and a limit rotary device are provided on the upper surface of the support mechanism. The precise positioning mechanism includes a precise positioning male head and a precise positioning female head. A limit sliding device is provided inside the precise positioning female head. The precise positioning male head is provided on the lower surface of the measurement telescopic mechanism, and the precise positioning female head is provided on the upper surface of the limit telescopic mechanism.

[0006] Further, the limit sliding device includes a limit block, a slide rail, a fixed rack, a transmission gear, and a motor. The slide rail is provided on the inner wall of the hole of the precise positioning female head. The side end of the slide rail is fixedly connected to the fixed rack. The fixed rack is meshed with the transmission gear. The limit block is provided inside the hole of the precise positioning female head. The motor is provided outside the precise positioning female head. The limit block is connected to the slide rail, and the transmission gear and the motor are connected in a way that penetrates the precise positioning female head.

[0007] Further, the adsorption mechanism includes a suction cup, a support frame, a fixed support plate, a lifting cylinder, and a cover plate. The upper end of the lifting cylinder is connected to the cover plate, the lower end of the lifting cylinder is connected to the fixed support plate. The lower surface of the fixed support plate is fixedly connected to the support frame, and the lower surface of the support frame is fixedly connected to the suction cup.

[0008] Further, the measuring telescopic mechanism includes a measuring starting end and a measuring telescopic end. There are four measuring telescopic mechanisms, which are arranged in a rhombus on the lower surface of the fixed support plate. The suction cup and the support frame are arranged inside the rhombus formed by the four measuring telescopic mechanisms. The corresponding four measuring starting ends are all connected to the lower surface of the fixed support plate through measuring rotary devices. The measuring rotary devices are rotatably connected to the lower surface of the fixed support plate and fixedly connected to the measuring starting ends. The corresponding four measuring telescopic ends all face the suction cup. One precise positioning male head is fixedly connected to one end of each measuring starting end away from the measuring telescopic end. The surface of the measuring telescopic end is provided with scales for measuring length, and the surface of the measuring rotary device is provided with scales for measuring angles.

[0009] Further, the limiting telescopic mechanism includes a limiting starting end and a limiting telescopic end. There are four limiting telescopic mechanisms, which are arranged in a rhombus on the upper surface of the support mechanism. The corresponding four limiting starting ends are all connected to the upper surface of the support mechanism through limiting rotary devices. The limiting rotary devices are rotatably connected to the upper surface of the support mechanism and fixedly connected to the limiting starting ends. The corresponding four limiting telescopic ends all face the inside of the rhombus. One precise positioning female head is fixedly connected to one end of each limiting starting end away from the limiting telescopic end. The surface of the limiting telescopic end is provided with scales for measuring length. A thumb-turn type locking device is provided at the connection between the limiting starting end and the limiting telescopic end. The surface of the limiting rotary device is provided with scales for measuring angles, and the surface of the limiting rotary device is provided with a thumb-turn type locking device.

[0010] Further, the welding mechanism includes a heating plate and a slide rail power device. One hydraulic rod is provided at each end of the heating plate. An outer protection plate is provided on the outer periphery of the heating plate. The lower ends of the two hydraulic rods are both connected to the outer protection plate, and the upper end of each hydraulic rod is respectively connected to a slide rail power device.

[0011] The welding method for the assembled plastic tray is implemented on the assembled plastic tray welding device. The welding steps for the upper cover and the base of the tray are as follows:

[0012] S1: Place the upper cover on the upper surface of the heating plate. The suction cup adsorbs the upper cover, and the lifting cylinder drives the upper cover to rise.

[0013] S2: The four measuring telescopic ends respectively measure the distance from the upper cover through telescoping, and adjust the rotation angles of the four measuring rotary devices on the lower surface of the adsorption mechanism so that the respective sides of the four measuring telescopic ends can be in contact with the sides of the upper cover.

[0014] S3: Place the base on the upper surface of the support mechanism. The four limiting telescopic ends respectively telescope to the corresponding limiting distances according to the corresponding measuring distances in S2 and fix the current telescopic state through the thumb-turn type locking device. The four limiting rotary devices respectively rotate to the corresponding rotary angles according to the corresponding rotation angles in S2 and fix the current rotary state through the thumb-turn type locking device.

[0015] S4: If the edges of the base do not fit and contact the respective edges of the four limit telescopic ends, repeat the operation steps of S2 - S4. If the edges of the base can fit and contact the respective edges of the four limit telescopic ends, then perform the following operation steps;

[0016] S5: The slide rail power device and the hydraulic rod move the heating plate to a fixed position, turn on the heating plate, and heat the upper cover and the base to fully melt them;

[0017] S6: The slide rail power device and the hydraulic rod move the heating plate out, the lifting cylinder drives the upper cover to descend. If the four precise positioning male heads and their respective precise positioning female heads are simultaneously aligned, it is considered that the upper cover and the base have achieved precise positioning. Adjust the lifting of the limit block through the motor and the transmission gear to make the upper cover and the base contact and weld. If the four precise positioning male heads and their respective precise positioning female heads fail to align, repeat the operation steps of S2 - S6.

[0018] Further, in step S3, the positions and telescopic directions of the four limit starting ends and the four measurement starting ends correspond one by one.

[0019] Further, in step S5, the slide rail power device controls the horizontal position of the heating plate, and the hydraulic rod controls the vertical position of the heating plate.

[0020] Further, in step S6, the motor drives the transmission gear to rotate, thereby driving the slide rail and the fixed rack to move up and down, and then driving the limit block to move up and down.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] The present invention realizes the positioning and alignment of the upper cover and the base by setting up a measurement and telescopic mechanism on the lower surface of the adsorption mechanism and a limit telescopic mechanism on the upper surface of the support mechanism, and checks the alignment of the upper cover and the base by setting up a precise positioning male head on the lower surface of the measurement and telescopic mechanism and a precise positioning female head on the upper surface of the limit telescopic mechanism, preventing the occurrence of inaccurate welding. It also adjusts the welding height by setting up a limit sliding device inside the precise positioning female head to adapt to the welding positions of plastic pallets of different sizes, improving the accuracy of welding, and thus improving the quality and efficiency of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the front view plane structure schematic diagram of the present invention;

[0024] Figure 2 is the front view sectional structure schematic diagram of the precise positioning female head of the present invention;

[0025] Figure 3Schematic side sectional structure diagram of the precise positioning female head of the present invention;

[0026] Figure 4 Schematic plan structure diagram of the lower surface of the fixed support plate of the present invention;

[0027] Figure 5 Schematic plan structure diagram of the upper surface of the support mechanism of the present invention.

[0028] In the figure: 101, heating plate; 102, slide rail power device; 103, hydraulic rod; 104, outer protection plate; 201, precise positioning male head; 202, precise positioning female head; 301, suction cup; 302, support frame; 303, fixed support plate; 304, lifting cylinder; 305, cover plate; 4, support mechanism; 5, measurement telescopic mechanism; 501, measurement starting end; 502, measurement telescopic end; 6, limit telescopic mechanism; 601, limit starting end; 602, limit telescopic end; 701, measurement rotary device; 702, limit rotary device; 8, limit sliding device; 801, limit block; 802, slide rail; 803, fixed rack; 804, transmission gear; 805, motor; 901, upper cover; 902, base. Detailed implementation manners

[0029] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. Embodiment 1

[0030] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , the assembled plastic pallet welding device includes a welding mechanism and a precise positioning mechanism. An adsorption mechanism is provided above the welding mechanism, a support mechanism 4 is provided below the welding mechanism, a measurement telescopic mechanism 5 and a measurement rotary device 701 are provided on the lower surface of the adsorption mechanism, a limit telescopic mechanism 6 and a limit rotary device 702 are provided on the upper surface of the support mechanism 4. The precise positioning mechanism includes a precise positioning male head 201 and a precise positioning female head 202. A limit sliding device 8 is provided inside the precise positioning female head 202. The precise positioning male head 201 is provided on the lower surface of the measurement telescopic mechanism 5, and the precise positioning female head 202 is provided on the upper surface of the limit telescopic mechanism 6.

[0031] Furthermore, the limit sliding device 8 includes a limit block 801, a slide rail 802, a fixed rack 803, a transmission gear 804, and a motor 805. The slide rail 802 is arranged on the inner wall of the hole of the precise positioning female head 202. The side end of the slide rail 802 is fixedly connected to the fixed rack 803. The fixed rack 803 is meshed with the transmission gear 804. The limit block 801 is arranged inside the hole of the precise positioning female head 202. The motor 805 is arranged outside the precise positioning female head 202. The limit block 801 is connected to the slide rail 802. The transmission gear 804 and the motor 805 are connected in a way that penetrates the precise positioning female head 202.

[0032] Furthermore, the adsorption mechanism includes a suction cup 301, a support frame 302, a fixed support plate 303, a lifting cylinder 304, and a cover plate 305. The upper end of the lifting cylinder 304 is connected to the cover plate 305. The lower end of the lifting cylinder 304 is connected to the fixed support plate 303. The lower surface of the fixed support plate 303 is fixedly connected to the support frame 302. The lower surface of the support frame 302 is fixedly connected to the suction cup 301.

[0033] Furthermore, the measurement telescopic mechanism 5 includes a measurement starting end 501 and a measurement telescopic end 502. There are four measurement telescopic mechanisms 5, which are arranged in a diamond shape on the lower surface of the fixed support plate 303. The suction cup 301 and the support frame 302 are arranged inside the diamond formed by the four measurement telescopic mechanisms 5. The corresponding four measurement starting ends 501 are all connected to the lower surface of the fixed support plate 303 through the measurement rotary device 701. The measurement rotary device 701 is rotatably connected to the lower surface of the fixed support plate 303. The measurement rotary device 701 is fixedly connected to the measurement starting end 501. The corresponding four measurement telescopic ends 502 all face the suction cup 301. One precise positioning male head 201 is fixedly connected to each end of each measurement starting end 501 away from the measurement telescopic end 502. The surface of the measurement telescopic end 502 is provided with scales for measuring length. The surface of the measurement rotary device 701 is provided with scales for measuring angles.

[0034] Further, the limit telescopic mechanism 6 includes a limit starting end 601 and a limit telescopic end 602. There are four limit telescopic mechanisms 6 arranged in a diamond shape on the upper surface of the support mechanism 4. The corresponding four limit starting ends 601 are all connected to the upper surface of the support mechanism 4 through limit rotary devices 702. The limit rotary devices 702 are rotatably connected to the upper surface of the support mechanism 4 and are fixedly connected to the limit starting ends 601. The corresponding four limit telescopic ends 602 all face the inside of the diamond. One precision positioning male head 202 is fixedly connected to one end of each limit starting end 601 away from the limit telescopic end 602. The surface of the limit telescopic end 602 is provided with scales for measuring length. A turn thumb-type locking device is provided at the connection between the limit starting end 601 and the limit telescopic end 602. The surface of the limit rotary device 702 is provided with scales for measuring angles, and a turn thumb-type locking device is provided on the surface of the limit rotary device 702.

[0035] Further, the welding mechanism includes a heating plate 101 and a slide rail power device 102. A hydraulic rod 103 is provided at each end of the heating plate 101. An outer protection plate 104 is provided on the outer periphery of the heating plate 101. The lower ends of the two hydraulic rods 103 are both connected to the outer protection plate 104, and the upper end of each hydraulic rod 103 is respectively connected to a slide rail power device 102.

[0036] The working principle of the assembled plastic pallet welding device based on Embodiment 1 is as follows:

[0037] The welding steps of the upper cover 901 and the base 902 of the pallet are as follows:

[0038] S1: The upper cover 901 is placed on the upper surface of the heating plate 101, and the suction cup 301 adsorbs the upper cover 901, and the lifting cylinder 304 drives the upper cover 901 to rise.

[0039] S2: The four measurement telescopic ends 502 respectively measure the distance from the upper cover 901 through telescoping, and adjust the rotation angles of the four measurement rotary devices 701 on the lower surface of the adsorption mechanism so that the sides of the four measurement telescopic ends 502 can be in contact with the sides of the upper cover 901.

[0040] S3: The base 902 is placed on the upper surface of the support mechanism 4. The four limit telescopic ends 602 respectively telescope to the corresponding limit distances according to the measured distances in S2 and fix the current telescopic state through the turn thumb-type locking device. The four limit rotary devices 702 respectively rotate to the corresponding rotary angles according to the rotation angles in S2 and fix the current rotary state through the turn thumb-type locking device.

[0041] S4: If the edges of the base 902 do not fit and contact the respective edges of the four limit telescopic ends 602, repeat the operation steps of S2 - S4. If the edges of the base 902 can fit and contact the respective edges of the four limit telescopic ends 602, perform the following operation steps;

[0042] S5: The slide rail power device 102 and the hydraulic rod 103 move the heating plate 101 to a fixed position, turn on the heating plate 101, and heat the upper cover 901 and the base 902 to fully melt them;

[0043] S6: The slide rail power device 102 and the hydraulic rod 103 move the heating plate 101 out, the lifting cylinder 304 drives the upper cover 901 to descend. If the four precise positioning male heads 201 and their respective precise positioning female heads 202 are simultaneously aligned, it is considered that the upper cover 901 and the base 902 have achieved precise positioning. Adjust the lifting of the limit block 801 through the motor 805 and the transmission gear 804 to make the upper cover 901 and the base 902 contact and weld. If the four precise positioning male heads 201 and their respective precise positioning female heads 202 fail to be aligned, repeat the operation steps of S2 - S6.

[0044] Further, in step S3, the positions and telescopic directions of the four limit starting ends 601 and the four measurement starting ends 501 correspond one by one.

[0045] Further, in step S5, the slide rail power device 102 controls the horizontal position of the heating plate 101, and the hydraulic rod 103 controls the vertical position of the heating plate 101.

[0046] Further, in step S6, the motor 805 drives the transmission gear 804 to rotate, thereby driving the slide rail 802 and the fixed rack 803 to move up and down, and thus driving the limit block 801 to move up and down.

[0047] The above specific embodiments are merely several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant revelations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. The prefabricated plastic pallet welding device includes a welding mechanism and a precise positioning mechanism, and is characterized in that: Above the welding mechanism, there is an adsorption mechanism. Below the welding mechanism, there is a support mechanism (4). On the lower surface of the adsorption mechanism, there is a measurement telescopic mechanism (5) and a measurement rotary device (701). On the upper surface of the support mechanism (4), there is a limit telescopic mechanism (6) and a limit rotary device (702). The precise positioning mechanism (2) includes a precise positioning male head (201) and a precise positioning female head (202). Inside the precise positioning female head (202), there is a limit sliding device (8). The precise positioning male head (201) is arranged on the lower surface of the measurement telescopic mechanism (5), and the precise positioning female head (202) is arranged on the upper surface of the limit telescopic mechanism (6); Among them, the limit sliding device (8) includes a limit block (801), a slide rail (802), a fixed rack (803), a transmission gear (804), and a motor (805). The slide rail (802) is arranged on the inner wall of the hole of the precise positioning female head (202). The side end of the slide rail (802) is fixedly connected to the fixed rack (803). The fixed rack (803) is meshed with the transmission gear (804). The limit block (801) is arranged inside the hole of the precise positioning female head (202). The motor (805) is arranged outside the precise positioning female head (202). The limit block (801) is connected to the slide rail (802), and the transmission gear (804) is connected to the motor (805) in a way that penetrates the precise positioning female head (202); Among them, the measurement telescopic mechanism (5) includes a measurement starting end (501) and a measurement telescopic end (502). There are four measurement telescopic mechanisms (5) arranged in a diamond shape on the lower surface of the fixed support plate (303). The suction cup (301) and the support frame (302) are arranged inside the diamond formed by the four measurement telescopic mechanisms (5). The corresponding four measurement starting ends (501) are all connected to the lower surface of the fixed support plate (303) through the measurement rotary device (701). The measurement rotary device (701) is rotatably connected to the lower surface of the fixed support plate (303). The measurement rotary device (701) is fixedly connected to the measurement starting end (501). The corresponding four measurement telescopic ends (502) all face the suction cup (301). One end of each measurement starting end (501) far from the measurement telescopic end (502) is respectively fixedly connected to a precise positioning male head (201). The surface of the measurement telescopic end (502) is provided with scales for measuring length, and the surface of the measurement rotary device (701) is provided with scales for measuring angles; Among them, the limit telescopic mechanism (6) includes a limit starting end (601) and a limit telescopic end (602). There are four limit telescopic mechanisms (6) arranged in a diamond shape on the upper surface of the support mechanism (4). The corresponding four limit starting ends (601) are all connected to the upper surface of the support mechanism (4) through limit rotary devices (702). The limit rotary devices (702) are rotatably connected to the upper surface of the support mechanism (4), and the limit rotary devices (702) are fixedly connected to the limit starting ends (601). The corresponding four limit telescopic ends (602) all face the inside of the diamond. One precision positioning male head (202) is fixedly connected to each end of each limit starting end (601) away from the limit telescopic end (602). The surface of the limit telescopic end (602) is provided with scales for measuring length. A turn thumb-type locking device is provided at the connection between the limit starting end (601) and the limit telescopic end (602). The surface of the limit rotary device (702) is provided with scales for measuring angles, and a turn thumb-type locking device is provided on the surface of the limit rotary device (702).

2. The prefabricated plastic pallet welding device according to claim 1, characterized in that: The adsorption mechanism includes a suction cup (301), a support frame (302), a fixed support plate (303), a lifting cylinder (304), and a cover plate (305). The upper end of the lifting cylinder (304) is connected to the cover plate (305), the lower end of the lifting cylinder (304) is connected to the fixed support plate (303), the lower surface of the fixed support plate (303) is fixedly connected to the support frame (302), and the lower surface of the support frame (302) is fixedly connected to the suction cup (301).

3. The prefabricated plastic tray welding device according to claim 2, characterized in that: The welding mechanism includes a heating plate (101) and a slide rail power device (102). One hydraulic rod (103) is provided at each end of the heating plate (101). An outer protection plate (104) is provided on the outer periphery of the heating plate (101). The lower ends of the two hydraulic rods (103) are both connected to the outer protection plate (104), and one slide rail power device (102) is respectively connected to the upper end of each hydraulic rod (103).

4. The welding method of the assembled plastic pallet is implemented on the assembled plastic pallet welding device according to claim 3, and is characterized in that, The welding steps of the upper cover (901) and the base (902) of the tray are as follows: S1: The upper cover (901) is placed on the upper surface of the heating plate (101), the suction cup (301) adsorbs the upper cover (901), and the lifting cylinder (304) drives the upper cover (901) to rise; S2: The four measurement telescopic ends (502) respectively measure the distance from the upper cover (901) through telescoping, and the rotation angles of the four measurement rotary devices (701) on the lower surface of the adsorption mechanism are adjusted so that the respective sides of the four measurement telescopic ends (502) can be in contact with the sides of the upper cover (901); S3: The base (902) is placed on the upper surface of the support mechanism (4). The four limit telescopic ends (602) respectively telescope to the corresponding limit distances according to the measured distances in S2 and fix the current telescopic state through the turn thumb-type locking device. The four limit rotary devices (702) respectively rotate to the corresponding rotary angles according to the rotation angles in S2 and fix the current rotary state through the turn thumb-type locking device; S4: If the edges of the base (902) do not fit and contact the respective edges of the four limit telescopic ends (602), repeat the operation steps of S2 - S4. If the edges of the base (902) can fit and contact the respective edges of the four limit telescopic ends (602), then perform the following operation steps; S5: The slide rail power device (102) and the hydraulic rod (103) move the heating plate (101) to a fixed position, turn on the heating plate (101), and heat the upper cover (901) and the base (902) to fully melt them; S6: The slide rail power device (102) and the hydraulic rod (103) move the heating plate (101) out, the lifting cylinder (304) drives the upper cover (901) to descend. If the four precise positioning male heads (201) and their respective precise positioning female heads (202) are simultaneously aligned, it is considered that the upper cover (901) and the base (902) have achieved precise positioning. Adjust the lifting of the limit block (801) through the motor (805) and the transmission gear (804) to make the upper cover (901) and the base (902) contact and weld. If the four precise positioning male heads (201) and their respective precise positioning female heads (202) fail to be aligned, repeat the operation steps of S2 - S6.

5. The prefabricated plastic pallet welding method according to claim 4, characterized in that: In step S3, the positions and telescopic directions of the four limit starting ends (601) and the four measurement starting ends (501) correspond one by one.

6. The prefabricated plastic pallet welding method according to claim 4, characterized in that: In step S5, the slide rail power device (102) controls the horizontal position of the heating plate (101), and the hydraulic rod (103) controls the vertical position of the heating plate (101).

7. The welding method of the assembled plastic pallet according to claim 4, characterized in that: In step S6, the motor (805) drives the transmission gear (804) to rotate, thereby driving the slide rail (802) and the fixed rack (803) to move up and down, and then driving the limit block (801) to move up and down.

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