A hot melt sheet welding device

Abstract

The present invention relates to a hot melt sheet welding device, which includes a frame, a welding mechanism and a feeding mechanism. The welding mechanism includes a blanking component, a pressing component and a welding component. The blanking component includes a containing box. A blanking hole is vertically formed in the containing box. One hot melt sheet can pass through the blanking hole. The pressing component includes a telescopic component. The telescopic component is used to press the hot melt sheet onto the plastic sheet. The welding component includes a hot melt gun. The hot melt gun is used to weld the hot melt sheet to the plastic sheet. The feeding mechanism includes a feeder and a material bin. The feeder includes a housing, a pushing component and a connecting component. A feeding channel is formed inside the housing. The material bin is used to store the hot melt sheets, and is connected to the housing and communicates with the feeding channel. The connecting component connects the discharge port to the blanking hole. The pushing component is used to push the hot melt sheet in the feeding channel so that it enters the blanking hole from the feeding channel. The present invention has the advantages of high welding efficiency and good quality.

Description

Technical Field

[0001] The present invention relates to the technical field of welding plastic sheets with special-shaped anchoring structures, and particularly to a hot-melt sheet welding device. Background Art

[0002] Plastic sheets with special-shaped anchoring structures, such as geogrid mats, can effectively prevent the erosion and damage of concrete structures. Especially in bridges, tunnels, and water conservancy projects, they can extend the service life of these structures. They also have excellent corrosion resistance and anti-seepage performance, and can effectively prevent liquid penetration. In agricultural irrigation and municipal engineering, they can prevent harmful substances such as pesticides and fertilizers from penetrating deep into the soil, protect the soil quality and crop safety, and at the same time prevent groundwater leakage and protect water resources.

[0003] When installing a geogrid mat, it needs to be fixed to structures such as walls by bolts. However, bolts cannot be directly driven into the geogrid mat. Therefore, holes need to be drilled in the geogrid mat first, and then a hot-melt sheet is welded at the hole. The hot-melt sheet has through holes for bolts to pass through. Finally, the bolts pass through the hot-melt sheet and are connected to other structures, thus realizing the installation of the geogrid mat. In the prior art, when welding a hot-melt sheet to a geogrid mat, workers need to hold a hot-melt gun for welding, resulting in low welding efficiency and difficult-to-guarantee welding quality. Summary of the Invention

[0004] In order to improve the efficiency and quality when welding a hot-melt sheet to a plastic sheet with a special-shaped anchoring structure, the present application provides a hot-melt sheet welding device.

[0005] The hot-melt sheet welding device provided by the present invention adopts the following technical solutions:

[0006] A hot-melt sheet welding device, comprising a frame, a welding mechanism and a feeding mechanism; wherein, the welding mechanism includes a blanking component, a pressing component and a welding component; the blanking component includes a receiving box; the receiving box is arranged on the frame, above the plastic sheet; the receiving box is provided with a blanking hole in the vertical direction; the diameter of the blanking hole matches the diameter of the hot-melt sheet, and one hot-melt sheet can pass through; the lower opening of the blanking hole faces the plastic sheet; the pressing component includes a telescopic component; the telescopic component is arranged on the receiving box and can pass through the blanking hole in the vertical direction to press the hot-melt sheet on the plastic sheet; the welding component includes a hot-melt gun; the hot-melt gun is arranged on the frame and below the plastic sheet, and is used to heat the hot-melt sheet to weld the hot-melt sheet and the plastic sheet; the feeding mechanism includes a feeder and a material bin; the feeder includes a housing, a pushing component and a connecting component; the housing is fixedly connected to the receiving box through the connecting component, and a feeding channel is formed inside; the material bin is used to store the hot-melt sheet, which is connected to the housing and communicated with the feeding channel; one side of the housing facing the welding mechanism forms a discharge port, and the discharge port is the end of the feeding channel; the connecting component is arranged between the housing and the receiving box to connect the discharge port and the blanking hole; the pushing component is used to push the hot-melt sheet in the feeding channel so that it enters the blanking hole from the feeding channel.

[0007] Optionally, a plurality of connection ports are provided on the upper side of the housing; each connection port is connected to one of the material bins, and only one of the material bins supplies materials at the same time.

[0008] Optionally, the feeding channel expands to form a bypass channel on either side in its feeding direction; the number of the connection ports is four, and the four connection ports are arranged in a square; the four connection ports are respectively a first connection port, a second connection port, a third connection port and a fourth connection port; the projections of the first connection port and the second connection port in the housing in the vertical direction are located in the feeding channel, and the second connection port is located between the first connection port and the discharge port; the projections of the third connection port and the fourth connection port in the housing in the vertical direction are both located in the bypass channel, and the third connection port is closer to the discharge port; the pushing component can push the hot-melt sheets below the first connection port and the second connection port to the discharge port along the feeding direction, and can also push the hot-melt sheet below the third connection port to below the second connection port and push the hot-melt sheet below the fourth connection port to below the first connection port along the horizontal direction and perpendicular to the feeding direction.

[0009] Optionally, the pushing component includes a first electric push rod, a second electric push rod, and a third electric push rod; the first electric push rod, the second electric push rod, and the third electric push rod are all arranged on the housing; wherein, the push rod of the first electric push rod extends into the feeding channel along the feeding direction, and is used to push the hot melt sheet below the first connection port, so as to push the hot melt sheet below the second connection port out of the discharge port, or directly push the hot melt sheet below the first connection port out of the discharge port; the push rod of the second electric push rod extends into the bypass channel along the horizontal direction and perpendicular to the feeding direction, and is used to push the hot melt sheet below the fourth connection port to below the first connection port; the push rod of the third electric push rod extends into the bypass channel along the horizontal direction and perpendicular to the feeding direction, and is used to push the hot melt sheet below the third connection port to below the second connection port.

[0010] Optionally, the storage bin is cylindrical, and a cylindrical storage space is formed therein; the diameter of the storage space matches the diameter of the hot melt sheet; the hot melt sheets are allowed to be stacked in the storage space along the thickness direction of the hot melt sheet; the lower end of the storage bin is connected to the first connection port to the fourth connection port, so that the storage space is communicated with the feeding channel or the bypass channel.

[0011] Optionally, the feeding channel and the bypass channel have the same height, and are both greater than the thickness of one hot melt sheet and less than the thickness of two stacked hot melt sheets.

[0012] Optionally, the welding mechanism further includes a lifting component; the lifting component includes a lifting cylinder; the cylinder body of the lifting cylinder is arranged on the frame, and the piston rod extends and retracts in the vertical direction; the end of the piston rod of the lifting cylinder is fixedly connected to the hot melt gun to drive the hot melt gun to approach or move away from the hot melt sheet.

[0013] Optionally, a plurality of welding mechanisms are arranged on the frame at intervals along the width direction of the plastic sheet with a special-shaped anchoring structure; a plurality of feeding mechanisms are arranged on the frame at intervals along the width direction of the plastic sheet with a special-shaped anchoring structure in one-to-one correspondence with the welding mechanisms.

[0014] Optionally, a limiting component is further included; the limiting component includes a limiting plate; the limiting plate is arranged vertically and is arranged on one side or both sides of the accommodating box in the width direction of the plastic sheet with a special-shaped anchoring structure; the length direction of the limiting plate is consistent with the length direction of the plastic sheet with a special-shaped anchoring structure, and extends into the space between two adjacent rows of special-shaped anchoring structures of the plastic sheet with a special-shaped anchoring structure along its width direction to limit the displacement of the plastic sheet with a special-shaped anchoring structure in its width direction.

[0015] Optionally, the limiting component further includes a driving component and a limiting gate; the limiting gate is vertically arranged, and the length direction thereof is consistent with the width direction of the plastic sheet with the special-shaped anchoring structure; the driving component is arranged on the telescopic component and connected to the limiting gate for driving the limiting gate to lift in the vertical direction; the limiting gate can extend between two adjacent rows of special-shaped anchoring structures along the length direction of the plastic sheet with the special-shaped anchoring structure to limit the displacement of the plastic sheet with the special-shaped anchoring structure in its length direction.

[0016] As described above, the hot melt sheet welding device of the present invention has at least the following beneficial effects:

[0017] The present invention not only greatly improves the efficiency of the welding operation of welding the hot melt sheet to the plastic sheet, but also has a high welding operation quality, enabling the welded plastic sheet to be firmly connected to structures such as walls. Description of the Drawings

[0018] Figure 1 is a schematic diagram for embodying the structure of the hot melt sheet welding device.

[0019] Figure 2 is another schematic diagram for embodying the structure of the hot melt sheet welding device.

[0020] Figure 3 is Figure 2 an enlarged view of part A in

[0021] Figure 4 is a schematic diagram for embodying the internal structures of the feeding mechanism and the welding mechanism.

[0022] Figure 5 is a schematic diagram for embodying the positional relationship between the storage bin and the feeding channel when the number of storage bins is one.

[0023] Figure 6 is a schematic diagram for embodying the positional relationship between the storage bins and the feeding channel when the number of storage bins is two.

[0024] Figure 7 is a schematic diagram for embodying the positional relationship between the storage bins and the feeding channel and the bypass channel when the number of storage bins is two.

[0025] Figure 8 is a schematic diagram for embodying the positional relationship between the storage bins and the feeding channel and the bypass channel when the number of storage bins is four.

[0026] Figure 9 is a schematic diagram for embodying the positions of the lifting component and the welding component.

[0027] Reference numerals: 01, plastic sheet; 02, special-shaped anchoring structure; 03, hot melt sheet; 1, frame; 11, frame body; 12, cross beam; 13, mounting rod; 2, receiving box; 21, blanking hole; 3, pressing assembly; 4, welding component; 5, feeder; 51, housing; 511, feeding channel; 512, bypass channel; 513, first connection port; 514, second connection port; 515, third connection port; 516, fourth connection port; 517, discharge port; 52, first electric push rod; 53, second electric push rod; 54, third electric push rod; 55, connecting component; 551, connecting channel; 6, storage bin; 7, lifting component; 8, limiting plate; 9, limiting shutter; 91, weight reduction hole; 10, driving component. Detailed implementation manners

[0028] The following specific examples illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. It should also be understood that the terms used in the embodiments of the present invention are for describing specific implementation manners and are not intended to limit the protection scope of the present invention. The test methods without specific conditions noted in the following embodiments are usually in accordance with conventional conditions or in accordance with the conditions recommended by each manufacturer.

[0029] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not intended to limit the limited conditions under which the present invention can be implemented. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear description and are not intended to limit the scope under which the present invention can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope under which the present invention can be implemented.

[0030] The present invention discloses a hot melt sheet welding device, aiming to improve the efficiency and quality when welding a hot melt sheet to a plastic sheet with a special-shaped anchoring structure. Please refer to Figure 1, The grid mat is a common plastic sheet with a special-shaped anchoring structure. On one side in the thickness direction, there are special-shaped anchoring structures densely arranged in a matrix. The longitudinal section of the special-shaped anchoring structure is V-shaped, protruding from the surface of the grid mat, which is used to improve the firmness of the combination of the grid mat and other structures. There are intervals between two rows of special-shaped anchoring structures spaced along the width direction of the grid mat and between two rows of special-shaped anchoring structures spaced along the length direction of the grid mat. The objects to be welded by the device of the present invention include grid mats and various plastic sheets similar to the grid mat, on the surface of which there are special-shaped anchoring structures densely arranged in a matrix. The hot-melt sheet 03 includes sheet materials made of plastics such as PE, and welding can be achieved by heating and melting.

[0031] Please refer to Figures 1 to 9 , The hot-melt sheet welding device of the present invention includes a frame 1, a welding mechanism and a feeding mechanism.

[0032] Please refer to Figures 1 to 3 , The frame 1 includes a frame body 11 and a cross beam 12. The frame 1 is floor-standing. The length direction of the cross beam 12 is parallel to the length direction of the plastic sheet 01. Multiple cross beams 12 are evenly spaced along the width direction of the plastic sheet 01 and are erected on the frame body 11. The upper side surfaces of all the cross beams 12 together form a working surface, and the plastic sheet 01 is placed on the working surface for welding.

[0033] The welding mechanism includes a feeding component, a pressing component 3 and a welding component 4. The feeding component includes a receiving box 2. The receiving box 2 is arranged on the frame 1, above the plastic sheet 01 with the special-shaped anchoring structure 02. As Figure 3 shown, as an optional installation method, two mounting rods 13 are erected on the frame body 11 of the frame 1 along the width direction of the plastic sheet 01. Both of the two mounting rods 13 pass through the receiving box 2, thus realizing the installation of the receiving box 2.

[0034] Please refer to Figures 2 to 4 , A blanking hole 21 is opened on the receiving box 2 in the vertical direction. The diameter of the blanking hole 21 matches the diameter of the hot-melt sheet 03, and one hot-melt sheet 03 can pass through. The lower opening of the blanking hole 21 faces the plastic sheet 01. It should be noted that the blanking hole 21 and the hole for the mounting rod 13 to pass through the receiving box 2 do not interfere with each other. The pressing component 3 includes a telescopic component. The telescopic component is arranged on the receiving box 2 and can pass through the blanking hole 21 in the vertical direction to press the hot-melt sheet 03 on the plastic sheet 01 with the special-shaped anchoring structure 02. The welding component 4 includes a hot-melt gun. The hot-melt gun is arranged on the frame 1 and is located below the plastic sheet 01, which is used to heat the hot-melt sheet 03 to weld the hot-melt sheet 03 and the plastic sheet 01.

[0035] The feeding mechanism includes a feeder 5 and a magazine 6. The feeder 5 includes a housing 51, a pusher component, and a connecting component 55. The housing 51 is in the shape of a cuboid and is fixedly connected to the receiving box 2 through the connecting component 55, with a feeding channel 511 formed inside. The magazine 6 is used to store the hot melt sheet 03, which is connected to the housing 51 and communicates with the feeding channel 511. On one side of the housing 51 facing the welding mechanism, there is a discharge port 517 formed, and the discharge port 517 is the end of the feeding channel 511. The connecting component 55 is arranged between the housing 51 and the receiving box 2 to connect the discharge port 517 with the blanking hole 21. The pusher component is used to push the hot melt sheet 03 in the feeding channel 511 so that it enters the blanking hole 21 from the feeding channel 511.

[0036] Before welding, place the part to be welded on the plastic sheet 01 under the blanking hole 21 of the receiving box 2. One hot melt sheet 03 in the magazine 6 drops into the feeding channel 511, and the pusher component pushes the hot melt sheet 03 into the blanking hole 21 and then drops to the part to be welded on the plastic sheet 01. The telescopic component presses the hot melt sheet 03 tightly on the plastic sheet 01 after passing through the blanking hole 21. Finally, the hot melt gun heats the hot melt sheet 03 below the plastic sheet 01 to melt the hot melt sheet 03, and the welding is completed after the hot melt sheet 03 cools down.

[0037] Specifically, the shape of the hot melt sheet 03 can be circular, square or other shapes. However, in actual use, the circular hot melt sheet 03 is welded most evenly and is more firm after welding. Therefore, preferably, in this embodiment, the magazine 6 is cylindrical, and a cylindrical storage space is formed inside. The diameter of the storage space matches the diameter of the hot melt sheet 03. The hot melt sheets 03 are allowed to be stacked in the thickness direction of the hot melt sheet 03 in the storage space. After the lower end of the magazine 6 is connected to the housing 51, the storage space communicates with the feeding channel 511, so that the hot melt sheets 03 in the magazine 6 can fall into the feeding channel 511 due to gravity.

[0038] The number of hot melt sheets 03 stored in the magazine 6 is related to the thickness of a single hot melt sheet 03 and the height of the magazine 6. The higher the height of the magazine 6 and the thinner the thickness of a single hot melt sheet 03, the more hot melt sheets 03 can be stored in the storage space. The number of hot melt sheets 03 stored in the magazine 6 of the feeder 5 should be sufficient to meet the welding needs of at least one roll of plastic sheet 01.

[0039] As Figure 5 shown, when the number of magazines 6 is one, a connection port is provided on the upper side of the housing 51, denoted as the first connection port 513. The magazine 6 is connected to the first connection port 513. The orthographic projection of the first connection port 513 in the housing 51 along the vertical direction falls within the feeding channel 511. The pusher assembly can push the hot melt sheet 03 in the feeding channel 511 to push the hot melt sheet 03 out of the discharge port 517.

[0040] As shown Figure 6 in the figure, when the number of bins 6 is two, two connection ports are provided on the upper side of the housing 51, denoted as the first connection port 513 and the second connection port 514 respectively. The orthographic projections of the first connection port 513 and the second connection port 514 in the housing 51 along the vertical direction both fall within the feeding channel 511, and the second connection port 514 is located between the first connection port 513 and the discharge port 517. Hot melt sheets 03 fall at both the first connection port 513 and the second connection port 514. When the pusher assembly pushes the hot melt sheet 03 below the first connection port 513, the hot melt sheet 03 below the second connection port 514 will be pushed out of the discharge port 517. When the hot melt sheets 03 in the bin 6 on the first connection port 513 are consumed, the pusher assembly directly pushes the hot melt sheet 03 below the second connection port 514 until the hot melt sheets 03 in the bin 6 on the second connection port 514 are consumed.

[0041] As shown Figure 7 in the figure, when the number of bins 6 is two, there is another situation: two connection ports are provided on the upper side of the housing 51, denoted as the second connection port 514 and the third connection port 515 respectively. The feeding channel 511 expands to form a bypass channel 512 on either side in its feeding direction. The orthographic projection of the second connection port 514 in the housing 51 along the vertical direction falls within the feeding channel 511. The orthographic projection of the third connection port 515 in the housing 51 along the vertical direction falls within the bypass channel 512. At this time, the pusher assembly first pushes the hot melt sheet 03 below the second connection port 514. After the hot melt sheets 03 in the bin 6 on the second connection port 514 are consumed, the pusher assembly first pushes the hot melt sheet 03 below the third connection port 515 to below the second connection port 514, and then pushes it out of the discharge port 517 until the hot melt sheets 03 in the bin 6 on the third connection port 515 are consumed.

[0042] Since the length of a roll of plastic sheet 01 is usually 50 m or longer, two bins 6 are also difficult to meet the supply of the hot melt sheets 03. Therefore, please refer to Figure 8, in a preferred embodiment of the present invention, the number of the bins 6 is four. The feeding channel 511 extends to either side of its feeding direction to form a bypass channel 512. Four connection ports are provided on the upper side of the housing 51, and the four connection ports are arranged in a square. The four connection ports are the first connection port 513, the second connection port 514, the third connection port 515, and the fourth connection port 516 respectively. The orthographic projections of the first connection port 513 and the second connection port 514 in the housing 51 along the vertical direction are located in the feeding channel 511, and the second connection port 514 is located between the first connection port 513 and the discharge port 517. The orthographic projections of the third connection port 515 and the fourth connection port 516 in the housing 51 along the vertical direction are both located in the bypass channel 512, and the third connection port 515 is closer to the discharge port 517. The pushing member can push the hot melt sheet 03 below the first connection port 513 and the second connection port 514 to the discharge port 517 along the feeding direction, and can also push the hot melt sheet 03 below the third connection port 515 to below the second connection port 514 and push the hot melt sheet 03 below the fourth connection port 516 to below the first connection port 513 along the horizontal direction and perpendicular to the feeding direction.

[0043] In actual use, first, the hot melt sheet 03 in the bin 6 on the second connection port 514 is consumed, and then the hot melt sheets 03 in the bins 6 on the first connection port 513, the third connection port 515, and the fourth connection port 516 are consumed in sequence.

[0044] In some other embodiments of the present invention, the number of the bins 6 can be more than four, and its working principle is similar to the case when the number of the bins 6 is four, which will not be elaborated here.

[0045] It should also be noted that the feeding channel 511 and the bypass channel 512 have the same height, and both are greater than the thickness of one hot melt sheet 03. If the heights of the feeding channel 511 and the bypass channel 512 are sufficient to allow two or more stacked hot melt sheets 03 to pass through, although feeding can also be carried out, it is easy to occur the situation that the hot melt sheet 03 is blocked in the feeding channel 511 or the bypass channel 512 due to the inclination of the hot melt sheet 03, which affects the welding efficiency. Therefore, in a preferred embodiment of the present invention, the heights of the feeding channel 511 and the bypass channel 512 are both greater than the thickness of one hot melt sheet 03 and less than the thickness of two stacked hot melt sheets 03. At this time, the feeding channel 511 and the bypass channel 512 also have the function of limiting the hot melt sheet 03 in the height direction, ensuring the feeding efficiency of the feeder 5, and thus contributing to ensuring the welding operation efficiency.

[0046] The pushing member can be an electric push rod, a cylinder, a hydraulic cylinder and other components. Since the electric push rod has the advantages of small volume, high precision and easy installation, in this embodiment, the pushing member adopts an electric push rod.

[0047] Specifically, please refer to Figure 8 , when the number of the bins 6 is four and they are arranged in the manner as shown in Figure 8 . The number of the electric push rods is three, namely a first electric push rod 52, a second electric push rod 53 and a third electric push rod 54. Among them, the push rod of the first electric push rod 52 extends into the feeding channel 511 along the feeding direction, and is used to push the hot melt sheet 03 below the first connection port 513, so as to push out the hot melt sheet 03 below the second connection port 514 from the discharge port 517, or directly push out the hot melt sheet 03 below the first connection port 513 from the discharge port 517. The push rod of the second electric push rod 53 extends into the bypass channel 512 along the horizontal direction and perpendicular to the feeding direction, and is used to push the hot melt sheet 03 below the fourth connection port 516 to below the first connection port 513. The push rod of the third electric push rod 54 extends into the bypass channel 512 along the horizontal direction and perpendicular to the feeding direction, and is used to push the hot melt sheet 03 below the third connection port 515 to below the second connection port 514.

[0048] Through the cooperation of the electric push rods and the bins 6, the hot melt sheets 03 in the bins 6 can be quickly input into the welding mechanism, thereby improving the efficiency of the welding operation.

[0049] Please continue to refer to Figures 2 to 4 . The receiving box 2 is in a cuboid shape. The blanking hole 21 is opened in the middle of the receiving box 2 along the vertical direction. The connecting member 55 is in a cuboid shape, and a connecting channel 551 is formed inside. One side opening of the connecting channel 551 is communicated with the discharge port 517, and the other side opening is communicated with the blanking hole 21 at the middle position of the inner wall of the blanking hole 21. When the hot melt sheet 03 is pushed out from the discharge port 517, the push rod of the electric push rod continues to push the hot melt sheet 03, so that the hot melt sheet 03 enters the blanking hole 21, and finally falls from the blanking hole 21 to the position where the plastic sheet 01 needs to be welded under the action of gravity.

[0050] The pressing assembly 3 can be a pressing oil cylinder. The cylinder body of the pressing oil cylinder is arranged on the upper side of the receiving box 2, and the piston rod extends into the blanking hole 21 along the vertical direction, and its stroke is sufficient to press the hot melt sheet 03 on the surface of the plastic sheet 01. In some other embodiments of the present invention, the pressing assembly 3 can also adopt suitable components such as air cylinders and motor lead screws.

[0051] Please refer to Figure 2 , Figure 9, The hot melt gun uses electric heating. By connecting to the power supply, high temperature can be generated at its upper end, so as to melt the hot melt sheet 03 and the plastic sheet 01 to achieve welding. When the melting degree of the hot melt sheet 03 and the plastic sheet 01 is sufficient for welding, the hot melt gun should stop heating to prevent the hot melt sheet 03 or the plastic sheet 01 from being damaged due to overheating. However, there is still residual heat at the upper end of the hot melt gun after power-off, and heating cannot be stopped immediately. Therefore, in order to avoid overheating of the hot melt sheet 03 or the plastic sheet 01, the welding mechanism further includes a lifting component 7. The lifting component 7 includes a lifting cylinder. The cylinder body of the lifting cylinder is arranged on the frame 1, and the piston rod stretches and retracts in the vertical direction. The end of the piston rod of the lifting cylinder is fixedly connected to the hot melt gun to drive the hot melt gun to approach or move away from the hot melt sheet 03.

[0052] When welding the hot melt sheet 03 and the plastic sheet 01, the lifting cylinder drives the hot melt gun to rise, so that the upper end of the hot melt gun approaches the hot melt sheet 03 and the plastic sheet 01 for welding. After the melting degree of the hot melt sheet 03 and the plastic sheet 01 is sufficient for welding, the lifting cylinder drives the hot melt gun to descend, away from the hot melt sheet 03 and the plastic sheet 01, to avoid damage to the hot melt sheet 03 or the plastic sheet 01 due to excessive melting. In this way, the welding quality of the hot melt sheet 03 can be further improved.

[0053] Furthermore, if multiple hot melt sheets 03 need to be welded to the plastic sheet 01 at intervals in the width direction of the plastic sheet 01, multiple welding mechanisms are arranged on the frame 1 at intervals in the width direction of the plastic sheet 01 with the special-shaped anchoring structure 02. The feeding mechanisms and the welding mechanisms are arranged on the frame 1 at intervals in the width direction of the plastic sheet 01 in one-to-one correspondence. In order to ensure the welding efficiency, each feeding mechanism and welding mechanism act synchronously. Figure 1 , Figure 2 The situation is shown when the number of both the feeding mechanism and the welding mechanism is six.

[0054] Please refer to Figures 2 to 4 , during the welding process between the hot melt sheet 03 and the plastic sheet 01, if the position of the plastic sheet 01 shifts, it will lead to poor welding quality or even welding failure. In order to reduce the shift of the plastic sheet 01 during the welding operation, the device of the present invention further includes a limiting component. The limiting component includes a limiting plate 8, a driving component 10 and a limiting gate plate 9.

[0055] The limiting plate 8 is arranged vertically and is arranged on one side or both sides of the accommodating box 2 in the width direction of the plastic sheet 01 with the special-shaped anchoring structure 02. The length direction of the limiting plate 8 is the same as the length direction of the plastic sheet 01 and extends between two adjacent rows of the special-shaped anchoring structures 02 of the plastic sheet 01 in its width direction to limit the displacement of the plastic sheet 01 in its width direction. However, the limiting plate 8 does not contact the surface of the plastic sheet 01 and does not affect the displacement of the plastic sheet 01 in its length direction.

[0056] The driving component 10 is arranged on the telescopic component and connected to the limiting shutter 9, and is used to drive the limiting shutter 9 to lift in the vertical direction. In this embodiment, the driving component 10 adopts a driving cylinder. When the number of feeding mechanisms is one, one driving cylinder is arranged on each of the two sides of the accommodating box 2 along the length direction of the plastic sheet 01. When the number of feeding mechanisms is multiple, a mounting plate is installed on each of the two sides of the two adjacent accommodating boxes 2 near the middle of the plastic sheet 01 along the length direction of the plastic sheet 01. One driving cylinder is respectively installed on the two mounting plates. The piston rod of the driving cylinder lifts and lowers in the vertical direction.

[0057] The limiting shutter 9 is vertically arranged, and its length direction is consistent with the width direction of the plastic sheet 01. The limiting shutter 9 can extend into the space between two adjacent rows of special-shaped anchoring structures 02 on the plastic sheet 01 along its length direction, so as to limit the displacement of the plastic sheet 01 with the special-shaped anchoring structures 02 in its length direction.

[0058] One limiting shutter 9 is arranged on each of the two driving cylinders, and the installation methods of the two limiting shutters 9 are the same. Specifically, the limiting shutter 9 is a trapezoidal plate. One side serving as the upper base of the trapezoid is connected to the end of the piston rod of the corresponding driving cylinder, and the side serving as the lower base of the trapezoid extends into the space between two adjacent rows of special-shaped anchoring structures 02 on the plastic sheet 01 along its length direction. In order to reduce the weight of the limiting shutter 9 and enable the limiting shutter 9 to act more quickly and accurately, a number of weight-reducing holes 91 can be opened on the limiting shutter 9.

[0059] When the plastic sheet 01 is placed at the predetermined position and ready for welding, the two driving cylinders respectively drive the two limiting shutters 9 to fall, restricting the displacement of the plastic sheet 01 in its length direction, which helps to improve the quality of the welding operation. After the welding operation is completed, when it is necessary to change the working position or remove the plastic sheet 01, the two driving cylinders respectively drive the two limiting shutters 9 to rise.

[0060] Before welding, the part of the plastic sheet 01 that needs to be welded is placed below the blanking hole 21 of the accommodating box 2 in the device of the present invention. One hot melt sheet 03 in the material bin 6 falls into the feeding channel 511, and the pushing component pushes the hot melt sheet 03 into the blanking hole 21 and then falls onto the part of the plastic sheet 01 that needs to be welded. The telescopic component passes through the blanking hole 21 and presses the hot melt sheet 03 against the plastic sheet 01. Finally, the hot melt gun heats the hot melt sheet 03 below the plastic sheet 01 to melt the hot melt sheet 03, and the welding is completed after the hot melt sheet 03 cools. During welding, the limiting component restricts the displacement of the plastic sheet 01 in its width direction and length direction.

[0061] It can be seen that compared with the prior art, the present invention not only greatly improves the efficiency of the welding operation of welding the hot melt sheet 03 to the plastic sheet 01, but also has high welding operation quality, enabling the welded plastic sheet 01 to be firmly connected to structures such as walls.

[0062] The above embodiments are only illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A hot melt welding device, characterized in that: It comprises a frame (1), a welding mechanism and a feeding mechanism; wherein: A plurality of welding mechanisms are arranged on the frame (1) at intervals along the width direction of the plastic sheet (01); A plurality of the feeding mechanisms and the welding mechanisms are arranged on the frame (1) in a one-to-one correspondence with each other at intervals along the width direction of the plastic sheet (01); The welding mechanism comprises a blanking assembly, a pressing assembly (3) and a welding component (4); The blanking assembly comprises a containing box (2); the containing box (2) is arranged on the frame (1) and is located above the plastic sheet (01); a blanking hole (21) is provided on the containing box (2) in a vertical direction; the diameter of the blanking hole (21) matches the diameter of the hot melt sheet (03) and can allow a hot melt sheet (03) to pass through; the lower side opening of the blanking hole (21) faces the plastic sheet (01); The pressing assembly (3) comprises a telescopic component; the telescopic component is arranged on the accommodating box (2) and can pass through the blanking hole (21) in a vertical direction to press the hot melt sheet (03) onto the plastic sheet (01); The welding component (4) comprises a hot melt gun; the hot melt gun is arranged on the frame (1) and is located below the plastic sheet (01), and is used to heat the hot melt sheet (03) so as to weld the hot melt sheet (03) to the plastic sheet (01); the welding mechanism further comprises a lifting component (7); the lifting component (7) comprises a lifting cylinder; the cylinder body of the lifting cylinder is arranged on the frame (1), and the piston rod is retracted in the vertical direction; the end of the piston rod of the lifting cylinder is fixedly connected to the hot melt gun; the lifting component (7) is used to drive the hot melt gun to approach the plastic sheet (01) to heat the plastic sheet (01), or to move away from the plastic sheet (01) to prevent the residual heat of the hot melt gun from causing the plastic sheet (01) to melt excessively; The feeding mechanism comprises a feeder (5) and a material bin (6); the feeder (5) comprises a housing (51), a material pushing component and a connecting component (55); The outer shell (51) is fixedly connected to the containing box (2) via the connecting component (55), and a material supply channel (511) is formed inside; the material bin (6) is used to store the hot melt sheet (03), is connected to the outer shell (51), and is in communication with the material supply channel (511); A material outlet (517) is formed on a side of the housing (51) facing the welding mechanism, and the material outlet (517) is the end of the material supply channel (511); The connecting component (55) is arranged between the housing (51) and the containing box (2) to connect the discharge port (517) with the drop hole (21); The pushing component is used to push the hot melt sheet (03) in the material supply channel (511) so that it enters the material drop hole (21) from the material supply channel (511); The upper side of the housing (51) is provided with a plurality of connection ports; each connection port is connected to one of the silos (6), and only one of the silos (6) is supplied with material at the same time; The feed channel (511) is extended to either side of the feed direction to form a bypass channel (512); The number of the connection ports is four, and the four connection ports are arranged in a square shape; the four connection ports are respectively a first connection port (513), a second connection port (514), a third connection port (515) and a fourth connection port (516); The orthographic projections of the first connecting port (513) and the second connecting port (514) in the housing (51) along the vertical direction are located in the material supply channel (511), and the second connecting port (514) is located between the first connecting port (513) and the material discharge port (517); The orthographic projections of the third connection port (515) and the fourth connection port (516) in the housing (51) along the vertical direction are both located in the bypass channel (512), and the third connection port (515) is closer to the discharge port (517); The pushing component can push the hot melt sheet (03) below the first connection port (513) and the second connection port (514) to the discharge port (517) along the feeding direction, and can also push the hot melt sheet (03) below the third connection port (515) to below the second connection port (514) and push the hot melt sheet (03) below the fourth connection port (516) to below the first connection port (513) along a direction horizontally and perpendicular to the feeding direction.

2. The hot melt welding device according to claim 1, characterized in that: The material pushing component comprises a first electric push rod (52), a second electric push rod (53) and a third electric push rod (54); the first electric push rod (52), the second electric push rod (53) and the third electric push rod (54) are all arranged on the housing (51); wherein, The push rod of the first electric push rod (52) extends into the feeding channel (511) along the feeding direction, and is used to push the hot melt sheet (03) below the first connecting port (513), thereby pushing the hot melt sheet (03) below the second connecting port (514) out of the discharge port (517), or directly pushing the hot melt sheet (03) below the first connecting port (513) out of the discharge port (517); The push rod of the second electric push rod (53) extends into the bypass channel (512) in a direction horizontally and perpendicular to the feeding direction, and is used to push the hot melt sheet (03) below the fourth connecting port (516) to below the first connecting port (513); The push rod of the third electric push rod (54) extends into the bypass channel (512) in a direction horizontally and perpendicular to the feeding direction, and is used to push the hot melt sheet (03) below the third connecting port (515) to below the second connecting port (514).

3. The hot melt welding device according to claim 2, characterized in that: The silo (6) is cylindrical, and a cylindrical storage space is formed therein; the diameter of the storage space matches the diameter of the hot melt sheet (03); the hot melt sheet (03) is allowed to be stacked in the storage space along the thickness direction of the hot melt sheet (03); The lower end of the silo (6) is connected to the first to fourth connecting ports (516) so that the storage space is in communication with the feed channel (511) or the bypass channel (512).

4. The hot melt welding device according to any one of claims 1 to 3, characterized in that: The feed channel (511) and the bypass channel (512) have the same height, and are both greater than the thickness of one hot melt sheet (03) and less than the thickness of two hot melt sheets (03) stacked together.

5. The hot melt welding device according to claim 1, characterized in that: It also includes a limit assembly; the limit assembly includes a limit plate (8); The limiting plate (8) is arranged vertically and is arranged on one side or both sides of the containing box (2) in the width direction of the plastic sheet (01); The length direction of the limiting plate (8) is consistent with the length direction of the plastic sheet (01), and extends between two adjacent rows of special-shaped anchoring structures (02) along the width direction of the plastic sheet (01), thereby limiting the displacement of the plastic sheet (01) in the width direction.

6. The hot melt welding device according to claim 5, characterized in that: The limiting assembly further comprises a driving component (10) and a limiting gate (9); The limit gate (9) is arranged vertically, and its length direction is consistent with the width direction of the plastic sheet (01); The driving component (10) is arranged on the telescopic component and connected to the limit gate plate (9), and is used to drive the limit gate plate (9) to move up and down in a vertical direction; The limiting gate (9) can extend between two adjacent rows of special-shaped anchoring structures (02) on the plastic sheet (01) along its length direction, thereby limiting the displacement of the plastic sheet (01) in its length direction.

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