Hot melting piece welding device

Abstract

The invention relates to a hot melting piece welding device. The hot melting piece welding device comprises a rack, a welding mechanism and a feeding mechanism. The welding mechanism comprises a discharging assembly, a pressing assembly and a welding part. The discharging assembly comprises a containing box. A discharging hole is formed in the containing box in the vertical direction. And one hot melting piece can pass through the blanking hole. The pressing assembly comprises a telescopic component. And the telescopic part is used for pressing the hot melting sheet on the plastic sheet. The welding part comprises a hot melting gun. The hot melting gun is used for welding the hot melting piece and the plastic sheet. The feeding mechanism comprises a feeder and a stock bin. The feeder comprises a shell, a pushing part and a connecting part. A feeding channel is formed in the shell. The stock bin is used for storing the hot melting pieces, connected to the shell and communicated with the feeding channel. And the discharge hole is communicated with the blanking hole through the connecting part. And the material pushing part is used for pushing the hot melting pieces in the material supply channel, so that the hot melting pieces enter the material falling hole from the material supply channel. The method has the advantages of high welding efficiency and good quality.

Description

Technical Field

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

[0002] Plastic sheets with special-shaped anchor structures, such as speed pads, can effectively prevent erosion and damage to concrete structures, especially in bridges, tunnels and water conservancy projects, and can extend the service life of these structures. It also has excellent corrosion resistance and anti-seepage properties, and can effectively prevent liquid penetration. In agricultural irrigation and municipal engineering, it can prevent harmful substances such as pesticides and fertilizers from penetrating into the deep soil layer, ensuring soil quality and crop safety, while preventing groundwater leakage and protecting water resources.

[0003] When installing the speed grid pad, it needs to be fixed to the wall or other structures by bolts, but the bolts cannot be driven directly into the speed grid pad. Therefore, it is necessary to first punch a hole in the speed grid pad, and then weld a hot melt sheet at the hole, and the hot melt sheet has a through hole for the bolt to pass through. Finally, the hot melt sheet is connected to other structures by bolts, thereby realizing the installation of the speed grid pad. In the prior art, if the hot melt sheet needs to be welded to the speed grid pad, the staff needs to hold a hot melt gun for welding, which has low welding efficiency and is 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 welding device provided by the present invention adopts the following technical solution: A hot melt sheet welding device, comprising a frame, a welding mechanism and a feeding mechanism; wherein the welding mechanism comprises a blanking assembly, a pressing assembly and a welding component; the blanking assembly comprises a containing box; the containing box is arranged on the frame and is located above the plastic sheet; a blanking hole is provided on the containing box in the vertical direction; the diameter of the blanking hole matches the diameter of the hot melt sheet and can allow a hot melt sheet to pass through; the lower side opening of the blanking hole faces the plastic sheet; the pressing assembly comprises a telescopic component; the telescopic component is arranged on the containing box and can pass through the blanking hole in the vertical direction to press the hot melt sheet onto the plastic sheet; the welding component comprises a hot melt gun; the hot melt gun is arranged on the frame and is located above the plastic sheet Below the sheet, it is used to heat the hot melt sheet so that the hot melt sheet is welded to the plastic sheet; the feeding mechanism includes a feeder and a silo; the feeder includes an outer shell, a pushing component and a connecting component; the outer shell is fixedly connected to the containing box through the connecting component, and a feeding channel is formed inside; the silo is used to store the hot melt sheet, which is connected to the outer shell and communicated with the feeding channel; a discharge port is formed on the side of the outer shell facing the welding mechanism, and the discharge port is the end of the feeding channel; the connecting component is arranged between the outer shell and the containing box, connecting the discharge port with 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.

[0006] Optionally, a plurality of connection ports are provided on the upper side of the shell; each connection port is connected to one of the silos, and only one of the silos is supplied with materials at the same time.

[0007] Optionally, the feed channel expands to either side of its feeding direction to form a bypass channel; 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 orthographic projections of the first connection port and the second connection port in the vertical direction in the shell are located in the feed channel, and the second connection port is located between the first connection port and the discharge port; the orthographic projections of the third connection port and the fourth connection port in the vertical direction in the shell 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 under 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 under the third connection port to below the second connection port and the hot melt sheet under the fourth connection port to below the first connection port in a direction horizontally and perpendicular to the feeding direction.

[0008] 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 shell; 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 under the first connection port, and then push the hot melt sheet under the second connection port out of the discharge port, or directly push the hot melt sheet under the first connection port out of the discharge port; the push rod of the second electric push rod extends into the bypass channel in a direction horizontally and perpendicular to the feeding direction, and is used to push the hot melt sheet under the fourth connection port to below the first connection port; the push rod of the third electric push rod extends into the bypass channel in a direction horizontally and perpendicular to the feeding direction, and is used to push the hot melt sheet under the third connection port to below the second connection port.

[0009] Optionally, the silo is cylindrical, with a cylindrical storage space 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 along the thickness direction of the hot melt sheet in the storage space; the lower end of the silo is connected to the first connection port to the fourth connection port to enable the storage space to communicate with the feed channel or the bypass channel.

[0010] Optionally, the feed channel and the bypass channel have the same height, and both are greater than the thickness of one hot melt sheet and less than the thickness of two stacked hot melt sheets.

[0011] Optionally, the welding mechanism also includes a lifting component; the lifting component includes a lifting cylinder; the cylinder body of the lifting cylinder is set on the frame, and the piston rod is extended and retracted in the vertical direction; the end of the lifting cylinder piston rod is fixedly connected to the hot melt gun to drive the hot melt gun to move closer to or away from the hot melt sheet.

[0012] Optionally, a plurality of the welding mechanisms are arranged on the frame at intervals along the width direction of the plastic sheet with the special-shaped anchoring structure; and a plurality of the feeding mechanisms and the welding mechanisms are arranged on the frame at intervals along the width direction of the plastic sheet with the special-shaped anchoring structure in a one-to-one correspondence.

[0013] Optionally, a limiting component is also included; the limiting component includes a limiting plate; the limiting plate is vertically arranged and is arranged on one side or both sides of the accommodating box in the width direction of the plastic sheet with the special-shaped anchoring structure; the length direction of the limiting plate is consistent with the length direction of the plastic sheet with the special-shaped anchoring structure, and extends into between two adjacent rows of special-shaped anchoring structures of the plastic sheet with the special-shaped anchoring structure along its width direction, so as to limit the displacement of the plastic sheet with the special-shaped anchoring structure in its width direction.

[0014] Optionally, the limiting assembly also includes a driving component and a limiting gate; the limiting gate is vertically arranged, and its length direction 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 is connected to the limiting gate, and is used to drive the limiting gate to rise and fall in the vertical direction; the limiting gate can extend into between two adjacent rows of special-shaped anchoring structures on the plastic sheet with the special-shaped anchoring structure along its length direction, so as to limit the displacement of the plastic sheet with the special-shaped anchoring structure in its length direction.

[0015] As described above, the hot melt welding device of the present invention has at least the following beneficial effects: The present invention not only greatly improves the efficiency of welding the hot melt sheet to the plastic sheet, but also has high welding quality, so that the welded plastic sheet can be firmly connected to a structure such as a wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram for illustrating the structure of a hot melt welding device.

[0017] Figure 2 It is another schematic diagram for illustrating the structure of a hot melt welding device.

[0018] Figure 3 yes Figure 2 A zoomed in view of middle game A.

[0019] Figure 4 It is a schematic diagram used to reflect the internal structure of the feeding mechanism and welding mechanism.

[0020] Figure 5 It is a schematic diagram used to reflect the positional relationship between the silo and the feeding channel when the number of silos is one.

[0021] Figure 6 It is a schematic diagram used to reflect the positional relationship between the silo and the feeding channel when there are two silos.

[0022] Figure 7 It is a schematic diagram used to reflect the positional relationship between the silo and the feed channel and bypass channel when there are two silos.

[0023] Figure 8 It is a schematic diagram used to reflect the positional relationship between the silo and the feed channel and bypass channel when the number of silos is four.

[0024] Fig. 9 It is a schematic diagram used to reflect the positions of lifting parts and welding parts.

[0025] : 01, plastic sheet; 02, special-shaped anchoring structure; 03, hot melt sheet; 1, frame; 11, frame body; 12, crossbeam; 13, mounting rod; 2, accommodating box; 21, drop hole; 3, clamping assembly; 4, welding component; 5, feeder; 51, shell; 511, feed 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, silo; 7, lifting component; 8, limit plate; 9, limit gate; 91, weight reduction hole; 10, driving component. DETAILED DESCRIPTION

[0026] The following is an explanation of the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the features in the following embodiments and the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific embodiments, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or according to the conditions recommended by the manufacturers.

[0027] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0028] The present invention discloses a hot melt sheet welding device, which aims to improve the efficiency and quality of welding a hot melt sheet to a plastic sheet with a special-shaped anchoring structure. Figure 1The speed pad is a common plastic sheet 01 with a special-shaped anchoring structure. On one side of the speed pad in the thickness direction, there are special-shaped anchoring structures 02 densely distributed in a matrix shape. The longitudinal section of the special-shaped anchoring structure 02 is V-shaped and protrudes from the surface of the speed pad, which is used to improve the firmness of the speed pad combined with other structures. There are gaps between two rows of special-shaped anchoring structures 02 spaced apart along the width direction of the speed pad and between two rows of special-shaped anchoring structures 02 spaced apart along the length direction of the speed pad. The objects to be welded by the device of the present invention include speed pads, and various plastic sheets 01 similar to speed pads, which have special-shaped anchoring structures 02 densely distributed in a matrix shape on the surface. The hot melt sheet 03 includes a sheet material made of plastic such as PE, which can be welded by heating and melting.

[0029] Please refer to Figures 1 to 9 The hot melt welding device of the present invention comprises a frame 1, a welding mechanism and a feeding mechanism.

[0030] Please refer to Figures 1 to 3 The frame 1 includes a frame body 11 and a crossbeam 12. The frame 1 is placed on the ground. The length direction of the crossbeam 12 is parallel to the length direction of the plastic sheet 01. A plurality of crossbeams 12 are evenly spaced and erected on the frame body 11 along the width direction of the plastic sheet 01. The upper side surfaces of all the crossbeams 12 together form a working surface, and the plastic sheet 01 is placed on the working surface for welding.

[0031] The welding mechanism includes a blanking assembly, a pressing assembly 3 and a welding component 4. The blanking assembly includes a receiving box 2. The receiving box 2 is arranged on the frame 1 and is located above the plastic sheet 01 with the special-shaped anchoring structure 02. Figure 3 As shown, as an optional installation method, two installation rods 13 are installed on the frame body 11 of the frame 1 along the width direction of the plastic sheet 01. Both installation rods 13 pass through the receiving box 2, thereby realizing the installation of the receiving box 2.

[0032] Please refer to Figures 2 to 4 , a blanking hole 21 is provided 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 can allow a hot melt sheet 03 to pass through. The lower side 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 clamping assembly 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 onto 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, and is used to heat the hot melt sheet 03 so that the hot melt sheet 03 is welded to the plastic sheet 01.

[0033] The feeding mechanism includes a feeder 5 and a silo 6. The feeder 5 includes a shell 51, a pushing component and a connecting component 55. The shell 51 is in a rectangular shape, fixedly connected to the containing box 2 through the connecting component 55, and a feeding channel 511 is formed inside. The silo 6 is used to store the hot melt sheet 03, which is connected to the shell 51 and communicated with the feeding channel 511. A discharge port 517 is formed on the side of the shell 51 facing the welding mechanism, and the discharge port 517 is the end of the feeding channel 511. The connecting component 55 is arranged between the shell 51 and the containing box 2, and connects the discharge port 517 with the blanking hole 21. The pushing 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.

[0034] Before welding, the part of the plastic sheet 01 to be welded is placed under the blanking hole 21 of the receiving box 2, and a hot melt sheet 03 in the hopper 6 falls into the feeding channel 511. The pushing component pushes the hot melt sheet 03 into the blanking hole 21, and then falls to the part of the plastic sheet 01 to be welded. After the telescopic component passes through the blanking hole 21, the hot melt sheet 03 is pressed against the plastic sheet 01. Finally, the hot melt gun heats the hot melt sheet 03 under the plastic sheet 01 to melt the hot melt sheet 03, and the welding is completed after the hot melt sheet 03 cools down.

[0035] Specifically, the shape of the hot melt sheet 03 can be circular, square or other shapes, but in actual use, the circular hot melt sheet 03 is welded most evenly and is more secure after welding. Therefore, as a preferred embodiment, 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 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 silo 6 is connected to the housing 51, the storage space is connected to the feeding channel 511, so that the hot melt sheets 03 in the silo 6 can fall into the feeding channel 511 due to gravity.

[0036] The number of hot melt sheets 03 stored in the silo 6 is related to the thickness of a single hot melt sheet 03 and the height of the silo 6. The higher the height of the silo 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 silo 6 of the feeder 5 should be sufficient to meet the welding needs of at least one roll of plastic sheet 01.

[0037] like Figure 5 As shown, when there is only one silo 6, a connection port is provided on the upper side of the housing 51, which is recorded as the first connection port 513. The silo 6 is connected to the first connection port 513. The vertical projection of the first connection port 513 in the housing 51 falls in the feed channel 511. The push assembly pushes the hot melt sheet 03 in the feed channel 511 to push the hot melt sheet 03 out of the discharge port 517.

[0038] like Figure 6 As shown, when there are two silos 6, two connection ports are provided on the upper side of the housing 51, which are respectively recorded as the first connection port 513 and the second connection port 514. The vertical projections of the first connection port 513 and the second connection port 514 in the housing 51 both fall in 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 from 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 sheet 03 in the silo 6 on the first connection port 513 is consumed, the pusher assembly directly pushes the hot melt sheet 03 below the second connection port 514 until the hot melt sheet 03 in the silo 6 on the second connection port 514 is consumed.

[0039] like Figure 7 As shown, when there are two silos 6, there is another situation: two connection ports are provided on the upper side of the shell 51, which are respectively recorded as the second connection port 514 and the third connection port 515. The feed channel 511 expands to either side of the two sides of its feed direction to form a bypass channel 512. The orthographic projection of the second connection port 514 in the shell 51 along the vertical direction falls within the feed channel 511. The orthographic projection of the third connection port 515 in the shell 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, and after the hot melt sheet 03 in the silo 6 on the second connection port 514 is 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 sheet 03 in the silo 6 on the third connection port 515 is consumed.

[0040] Since the length of a roll of plastic sheet 01 is usually 50m or longer, two silos 6 are also difficult to meet the supply of hot melt sheet 03. Therefore, please refer to Figure 8In a preferred embodiment of the present invention, the number of silos 6 is four. The feed channel 511 expands to either side of the feed direction to form a bypass channel 512. Four connection ports are provided on the upper side of the shell 51, and the four connection ports are arranged in a square. 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 connection port 513 and the second connection port 514 in the shell 51 along the vertical direction are located in the feed 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 shell 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.

[0041] In actual use, the hot melt piece 03 in the material bin 6 on the second connection port 514 is consumed first, and then the hot melt piece 03 in the material bin 6 on the first connection port 513, the third connection port 515 and the fourth connection port 516 are consumed in sequence.

[0042] In some other embodiments of the present invention, the number of silos 6 may be more than four, and the working principle is similar to the case where there are four silos 6, which will not be described in detail here.

[0043] It should also be noted that the heights of the feed channel 511 and the bypass channel 512 are the same, and both are greater than the thickness of one hot melt sheet 03. If the heights of the feed channel 511 and the bypass channel 512 are sufficient to accommodate two or more stacked hot melt sheets 03, although feeding can be performed, it is easy for the hot melt sheet 03 to be blocked in the feed channel 511 or the bypass channel 512 due to the tilt of the hot melt sheet 03, which affects the efficiency of welding. Therefore, in a preferred embodiment of the present invention, the heights of the feed 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 feed 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 helping to ensure the efficiency of the welding operation.

[0044] The material pushing component can be an electric push rod, a cylinder, a hydraulic cylinder, etc. Since the electric push rod has the advantages of small size, high precision and easy installation, in this embodiment, the material pushing component adopts an electric push rod.

[0045] For details, please refer to Figure 8 , the number of silos 6 is four, and if Figure 8 When arranged in the manner shown. There are three electric push rods, namely the first electric push rod 52, the second electric push rod 53 and the 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, and then push the hot melt sheet 03 below the second connection port 514 out of the discharge port 517, or directly push the hot melt sheet 03 below the first connection 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 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 in a direction horizontally 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.

[0046] Through the cooperation of the electric push rod and the silo 6, the hot melt sheet 03 in the silo 6 can be quickly input into the welding mechanism, thereby improving the efficiency of the welding operation.

[0047] Please continue to refer to Figures 2 to 4 , the containing box 2 is in the shape of a rectangular parallelepiped. The blanking hole 21 is opened in the middle of the containing box 2 along the vertical direction. The connecting component 55 is in the shape of a rectangular parallelepiped, and a connecting channel 551 is formed inside. One side opening of the connecting channel 551 is connected to the discharge port 517, and the other side opening is connected to the blanking hole 21 at the middle position of the inner wall of the blanking hole 21. After 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 under the action of gravity to the position where the plastic sheet 01 needs to be welded.

[0048] The clamping assembly 3 can be a clamping oil cylinder, the cylinder body of which is arranged on the upper side of the receiving box 2, the piston rod extends into the blanking hole 21 in the vertical direction, and its stroke is sufficient to press the hot melt sheet 03 against the surface of the plastic sheet 01. In some other embodiments of the present invention, the clamping assembly 3 can also use suitable components such as a cylinder and a motor screw.

[0049] Please refer to Figure 2 , Fig. 9The hot melt gun adopts the form of electric heating. By connecting to a power source, its upper end can generate high temperature, thereby melting the hot melt sheet 03 and the plastic sheet 01 to achieve welding. When the hot melt sheet 03 and the plastic sheet 01 are melted to a degree 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 by excessive heating. However, after the hot melt gun is powered off, there is still residual temperature at the upper end, and heating cannot be stopped immediately. Therefore, in order to avoid excessive heating of the hot melt sheet 03 or the plastic sheet 01, the welding mechanism also 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 is retracted 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 move closer to or away from the hot melt sheet 03.

[0050] When the hot melt sheet 03 and the plastic sheet 01 are welded, the lifting cylinder drives the hot melt gun to rise, so that the upper end of the hot melt gun is close to the hot melt sheet 03 and the plastic sheet 01 for welding. After the hot melt sheet 03 and the plastic sheet 01 are melted to a sufficient degree 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.

[0051] Furthermore, if the plastic sheet 01 needs to be welded with multiple hot melt sheets 03 at intervals in the width direction thereof, multiple welding mechanisms are arranged at intervals on the frame 1 along the width direction of the plastic sheet 01 with the special-shaped anchoring structure 02. Multiple feeding mechanisms and welding mechanisms are arranged at intervals on the frame 1 along the width direction of the plastic sheet 01 in a one-to-one correspondence. In order to ensure the efficiency of welding, each feeding mechanism and welding mechanism operates synchronously. Figure 1 , Figure 2 The figure shows the situation when the number of the feeding mechanisms and the number of the welding mechanisms are both six.

[0052] Please refer to Figures 2 to 4 If the position of the plastic sheet 01 is offset during the welding process between the hot melt sheet 03 and the plastic sheet 01, the welding quality will be deteriorated or even the welding will fail. In order to reduce the position offset of the plastic sheet 01 during the welding operation, the device of the present invention also includes a limit assembly. The limit assembly includes a limit plate 8, a driving component 10 and a limit gate 9.

[0053] The limiting plate 8 is vertically arranged and is arranged on one or both sides of the containing 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 consistent with the length direction of the plastic sheet 01, and extends into between two adjacent rows of special-shaped anchoring structures 02 of the plastic sheet 01 along 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 along its length direction.

[0054] 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 rise and fall in the vertical direction. In this embodiment, the driving component 10 adopts a driving cylinder. When the number of the feeding mechanism is one, the driving cylinder is provided with one on each side of the containing box 2 along the length direction of the plastic sheet 01. When the number of the feeding mechanism is multiple, a mounting plate is installed on each side of the two containing boxes 2 adjacent to the middle of the plastic sheet 01 along the length direction of the plastic sheet 01. The driving cylinder is installed with one on each of the two mounting plates. The piston rod of the driving cylinder rises and falls in the vertical direction.

[0055] The limit gate 9 is vertically arranged, and its length direction is consistent with the width direction of the plastic sheet 01. The limit gate 9 can extend between two adjacent rows of special-shaped anchoring structures 02 on the plastic sheet 01 along its length direction to limit the displacement of the plastic sheet 01 with the special-shaped anchoring structures 02 in its length direction.

[0056] One limit gate plate 9 is provided on each of the two driving cylinders, and the two limit gate plates 9 are installed in the same manner. Specifically, the limit gate plate 9 is a trapezoidal plate, one side of the trapezoidal upper bottom is connected to the end of the corresponding driving cylinder piston rod, and one side of the trapezoidal lower bottom extends into 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 limit gate plate 9 and enable the limit gate plate 9 to move more quickly and accurately, a number of weight-reducing holes 91 can also be opened on the limit gate plate 9.

[0057] When the plastic sheet 01 is placed at a predetermined position for welding, the two driving cylinders drive the two limit gates 9 to fall respectively, limiting the displacement of the plastic sheet 01 along 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 workstation or remove the plastic sheet 01, the two driving cylinders drive the two limit gates 9 to rise respectively.

[0058] Before welding, the device of the present invention places the part of the plastic sheet 01 to be welded below the blanking hole 21 of the receiving box 2, and a hot melt sheet 03 in the hopper 6 falls into the feeding channel 511. The pushing component pushes the hot melt sheet 03 into the blanking hole 21, and then falls to the part of the plastic sheet 01 to be welded. After the telescopic component passes through the blanking hole 21, the hot melt sheet 03 is pressed 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 down. While welding, the limit assembly limits the displacement of the plastic sheet 01 in its width and length directions.

[0059] It can be seen that compared with the prior art, the present invention not only greatly improves the efficiency of welding the hot melt sheet 03 to the plastic sheet 01, but also has high welding quality, so that the plastic sheet 01 after welding can be firmly connected to a structure such as a wall.

[0060] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall 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: 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 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 drop hole (21) from the material supply channel (511).

2. The device according to claim 1, characterized in that: A plurality of connection ports are provided on the upper side of the housing (51); each connection port is connected to one of the silos (6), and only one of the silos (6) is feeding at the same time.

3. The device according to claim 2, characterized in that: 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.

4. The device according to claim 3, 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).

5. The device according to claim 4, 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 connecting port (513) to the fourth connecting port (516), so that the storage space is in communication with the feed channel (511) or the bypass channel (512).

6. The device according to any one of claims 1 to 5, 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.

7. The device according to claim 1, characterized in that 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 extended and retracted 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).

8. The device according to claim 1, characterized in that 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 and at intervals along the width direction of the plastic sheet (01).

9. The 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.

10. The device according to claim 9, 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.

Images