A hot melt welding machine

Abstract

A hot melt welding machine includes a hot melt welding cabinet, wherein a welding cavity is provided inside the hot melt welding cabinet; an upper mold lifting mechanism includes a first upper mold and a first lifting drive assembly; a lower mold lifting mechanism includes a second lower mold and a second lifting drive assembly; a horizontal moving mechanism includes a mold group and a horizontal drive assembly; the mold group includes a second upper mold and a first lower mold; the horizontal drive assembly is used to drive the mold group to move in a horizontal direction, so that the mold group and the second lower mold and the first upper mold are in a parallel state; the first lifting drive assembly can drive the first upper mold to lift in a vertical direction, so that the first upper mold and the first lower mold are separated or joined; the second lifting drive assembly can drive the second lower mold to lift in a vertical direction, so that the second lower mold and the second upper mold are joined or separated. The present application ensures the accuracy of mold joining, ensures the quality of mold joining, and the mold joining process is automatically performed by the driving assembly, which saves manpower, reduces the time of mold joining, and improves the efficiency of mold joining.

Description

Technical Field

[0001] The invention relates to the technical field of welding machines, in particular to a hot melt welding machine. Background Art

[0002] Hot melt welding uses a hot plate to heat the surface of the workpiece to make it fully melted, then quickly bond them together and maintain a certain pressure, and achieve the purpose of welding after cooling.

[0003] The existing hot melt welding equipment is simple and mainly relies on manual heating of the two welding surfaces to be welded, and then the two molds are pressed together by manpower to weld the two workpieces together. The working process mainly relies on manual operation, the process is unstable, and the mold closing is not accurate, resulting in poor welding quality and low welding efficiency. Summary of the invention

[0004] In view of the problems raised by the background technology, the purpose of the present invention is to provide a hot melt welding machine to solve the problems of low welding efficiency and inaccurate mold closing.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A hot melt welding machine comprises a hot melt welding cabinet, wherein a welding chamber is arranged inside the hot melt welding cabinet; an upper mold lifting mechanism, a lower mold lifting mechanism and a horizontal moving mechanism are arranged in the welding chamber; the upper mold lifting mechanism comprises a first upper mold and a first lifting drive assembly; the lower mold lifting mechanism comprises a second lower mold and a second lifting drive assembly; the second lower mold and the first upper mold are arranged in parallel; the horizontal moving mechanism comprises a mold group and a horizontal driving assembly; the mold group comprises a second upper mold and a first lower mold; the second upper mold is located below the first lower mold, and the second upper mold is arranged in parallel with the first lower mold; the horizontal driving assembly is used to drive the mold group to move in the horizontal direction, so that the mold group, the second lower mold and the first upper mold are in a parallel state; the first lifting drive assembly can drive the first upper mold to lift in the vertical direction, so that the first upper mold and the first lower mold are separated or closed; the second lifting drive assembly can drive the second lower mold to lift in the vertical direction, so that the second lower mold and the second upper mold are closed or separated.

[0007] Preferably, the first lifting drive assembly includes a first lifting drive member, a first mounting plate and a first lifting plate; the first mounting plate is installed at the top of the welding chamber; the first lifting drive member is installed on the first mounting plate, and the driving end of the first lifting drive member extends downward; the first lifting plate is connected to the driving end of the first lifting drive member, so that the first lifting drive member can drive the first lifting plate to rise and fall in the vertical direction; the first upper mold is installed at the bottom of the first lifting plate.

[0008] Preferably, the second lifting drive assembly includes a second lifting drive member, a second mounting plate and a second lifting plate; the second mounting plate is fixedly mounted on the bottom of the welding chamber; the second lifting drive member is mounted on the second mounting plate, and the driving end of the second lifting drive member extends upward; the second lifting plate is connected to the driving end of the second lifting drive member, so that the second lifting drive member can drive the second lifting plate to rise and fall in the vertical direction; the second lower mold is mounted on the top of the second lifting plate.

[0009] Preferably, the horizontal driving assembly includes a sliding structure, a horizontal driving member and a transmission assembly; the bottom of the horizontal driving member is hinged to the bottom of the welding cavity, and the driving end of the horizontal driving member is tilted upward; the driving end of the horizontal driving member is provided with a hinge part; the transmission assembly includes a first hinge rod and a second hinge rod; the two ends of the first hinge rod are respectively a first fixed end and a first hinge end; the first fixed end is hinged to the side wall of the welding cavity; the first hinge end is provided with a hinge groove; the two ends of the second hinge rod are respectively a second fixed end and a second hinge end; the second fixed end is hinged to the sliding structure; the second hinge end is sleeved in the hinge groove, and the second hinge end is rotatably connected to the first hinge end through a hinge shaft; the end of the hinge shaft is hinged to the hinge part, so that the horizontal driving member can make the first hinge rod and the second hinge rod rotate around the hinge shaft by lifting its driving end; the rotation of the second hinge rod can push and pull the sliding structure to slide in the front and rear directions.

[0010] Preferably, the horizontal driving member is a telescopic cylinder.

[0011] Preferably, the sliding structure includes a guide rail seat and a sliding seat; the guide rail seat is arranged in the front and rear of the welding cavity; a guide rail bar is provided on the top of the guide rail seat; a sliding member clamped with the guide rail bar is provided on the top of the sliding seat; the sliding member is clamped on the guide bar, so that the sliding seat can slide on the guide rail seat along the front and rear direction; the second upper mold is installed at the bottom of the sliding seat; the first lower mold is installed at the top of the sliding seat.

[0012] Preferably, a first hinge seat is provided on the rear side of the sliding seat; the second fixed end is hinged to the first hinge seat, so that when the second hinge rod rotates around the hinge axis, the sliding seat can be pushed and pulled to slide in the front-rear direction.

[0013] Preferably, the rear side wall of the welding cavity is provided with connecting beams arranged on the left and right; the connecting beam is provided with a second hinge seat, and the first fixed end is hinged to the first hinge seat.

[0014] Preferably, an exhaust pipe is further provided on the top of the hot melt welding cabinet; one end of the exhaust pipe is communicated with the welding chamber, and the other end of the exhaust pipe is communicated with the outside.

[0015] Preferably, an air supply device is also provided at the bottom of the welding chamber.

[0016] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0017] The present application uses the first lifting drive assembly, the second lifting drive assembly and the horizontal drive assembly to automatically close the first upper mold and the second lower mold with the mold group, thereby ensuring the accuracy of the mold closing and the quality of the mold closing. The mold closing process is completely automatically performed by the drive assembly, which saves manpower, reduces the time of mold closing and improves the efficiency of mold closing. Preferably, the first upper mold, the second lower mold and the mold group are set to close two sets of molds at one time, thereby improving the working efficiency of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is an overall schematic diagram of a hot melt welding machine according to an embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of the structure in a welding chamber according to an embodiment of the present invention;

[0020] Figure 3 It is a schematic diagram of the assembly of a mold set and a sliding seat according to an embodiment of the present invention;

[0021] Figure 4 is a schematic structural diagram of a horizontal drive assembly according to an embodiment of the present invention;

[0022] Figure 5 It is a schematic diagram of a part of the structure in a welding chamber according to an embodiment of the present invention;

[0023] Figure 6 is a side view of a hot melt welding machine according to an embodiment of the present invention;

[0024] Hot melt welding cabinet 1, welding chamber 10, upper mold lifting mechanism 11, first upper mold 111, first lifting drive member 112, first mounting plate 113, first lifting plate 114, lower mold lifting mechanism 12, second lower mold 121, second lifting plate 122, second mounting plate 123, second lifting drive member 124, horizontal moving mechanism 13, mold group 131, second upper mold 1311, first lower mold 1312, horizontal driving assembly 132, horizontal driving member 1321, hinged portion 1322, first hinged rod 1331, second hinged rod 1332, hinge groove 1333, hinge shaft 1334, guide rail seat 1341, sliding seat 1342, guide rail bar 1343, sliding member 1344, first hinged seat 1345, connecting beam 14, second hinged seat 141, exhaust pipe 15, air supply device 16. DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In addition, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined as "first", "second" and "third" may explicitly or implicitly include one or more of the features.

[0027] A preferred embodiment of the present application is as follows Figures 1 to 6As shown, a hot melt welding machine includes a hot melt welding cabinet 1, wherein a welding chamber 10 is provided inside the hot melt welding cabinet 1; an upper mold lifting mechanism 11, a lower mold lifting mechanism 12 and a horizontal moving mechanism 13 are provided inside the welding chamber 10; the upper mold lifting mechanism 11 includes a first upper mold 111 and a first lifting drive assembly; the lower mold lifting mechanism 12 includes a second lower mold 121 and a second lifting drive assembly; the second lower mold 121 and the first upper mold 111 are arranged in parallel; the horizontal moving mechanism 13 includes a mold group 131 and a horizontal driving assembly 132; the mold group 131 includes a second upper mold 1311 and a first lower mold 1312; the second upper mold 1311 is located at a position Below the first lower mold 1312, the second upper mold 1311 is arranged parallel to the first lower mold 1312; the horizontal driving component 132 is used to drive the mold group 131 to move in the horizontal direction, so that the mold group 131, the second lower mold 121 and the first upper mold 111 are in a parallel state; the first lifting driving component can drive the first upper mold 111 to rise and fall in the vertical direction, so that the first upper mold 111 and the first lower mold 1312 are separated or closed; the second lifting driving component can drive the second lower mold 121 to rise and fall in the vertical direction, so that the second lower mold 121 and the second upper mold 1311 are closed or separated.

[0028] like Figures 1 to 3As shown, the first upper mold 111 is located at the top of the welding cavity 10, the second lower mold 121 is located at the bottom of the welding cavity 10, and the first upper mold 111 and the second lower mold 121 are arranged in parallel and opposite to each other. The mold set 131 is located between the first upper mold 111 and the first lower mold 1312, and the mold set 131 is located at the rear end of the welding cavity 10 before the mold is closed. Before the hot melt welding machine closes the mold, the mold set 131 can be driven by the horizontal moving drive assembly to move forward to the bottom of the first lower upper mold. After the mold set 131 moves to the bottom of the first upper mold 111, the first lifting drive assembly drives the first upper mold 111 to descend, so that the first upper mold 111 and the first lower mold 1312 are closed, thereby achieving welding. While the first lifting drive assembly drives the first upper mold 111 to descend, the second lifting drive assembly also drives the second lower mold 121 to move upward, so that the second lower mold 121 and the second upper mold 1311 are closed, thereby achieving welding. After the mold closing is completed, the first lifting drive assembly drives the first upper mold 111 to rise, so that the first upper mold 111 is separated from the first lower mold 1312; at the same time, the second lifting drive assembly also drives the second lower mold 121 to descend, so that the second lower mold 121 is separated from the second upper mold 1311; after the mold group 131 is separated from the first upper mold 111 and the second lower mold 121, the horizontal drive assembly 132 moves backward and returns to the original position before the mold. Therefore, the present application uses the first lifting drive assembly, the second lifting drive assembly and the horizontal drive assembly 132 to automatically close the mold with the mold group 131, ensuring the accuracy of the mold closing, ensuring the quality of the mold closing, and the mold closing process is completely automatically carried out by the driving assembly, saving manpower, reducing the time of mold closing, and improving the efficiency of mold closing. More preferably, the first upper mold 111, the second lower mold 121 and the mold group 131 are set, so that two sets of molds can be closed at one time, thereby improving the working efficiency of welding.

[0029] Specifically, the first lifting drive assembly includes a first lifting drive member 112, a first mounting plate 113 and a first lifting plate 114; the first mounting plate 113 is mounted on the top of the welding chamber 10; the first lifting drive member 112 is mounted on the first mounting plate 113, and the driving end of the first lifting drive member 112 extends downward; the first lifting plate 114 is connected to the driving end of the first lifting drive member 112, so that the first lifting drive member 112 can drive the first lifting plate 114 to rise and fall in the vertical direction; the first upper mold 111 is mounted on the bottom of the first lifting plate 114. Figure 2As shown, when the mold is closed, the first lifting drive member 112 drives the first lifting plate 114 to descend, so that the first lifting plate 114 drives the first upper mold 111 to descend, so that the first upper mold 111 is closed with the first lower mold 1312. After the mold is closed, the first lifting drive member 112 drives the first lifting plate 114 to rise, so that the first lifting plate 114 drives the first upper mold 111 to rise and separate from the first lower mold 1312. Such a setting makes the transmission of the first lifting drive component stable, ensuring that the first upper mold 111 can be accurately and automatically closed or separated with the first lower mold 1312; and the structure is simple and compact, and the production cost is low.

[0030] Specifically, the second lifting drive assembly includes a second lifting drive member 124, a second mounting plate 123 and a second lifting plate 122; the second mounting plate 123 is fixedly mounted on the bottom of the welding chamber 10; the second lifting drive member 124 is mounted on the second mounting plate 123, and the driving end of the second lifting drive member 124 extends upward; the second lifting plate 122 is connected to the driving end of the second lifting drive member 124, so that the second lifting drive member 124 can drive the second lifting plate 122 to rise and fall in the vertical direction; the second lower mold 121 is mounted on the top of the second lifting plate 122. Figure 2 As shown, when the mold is closed, the second lifting drive member 124 drives the second lifting plate 122 to rise, so that the second lowering plate drives the second lower mold 121 to rise, so that the second lower mold 121 is closed with the second upper mold 1311. After the mold is closed, the second lifting drive member 124 drives the second lifting plate 122 to descend, so that the second lifting plate 122 drives the second lower mold 121 to descend and separate from the second parting mold. Such a setting makes the transmission of the first lifting drive assembly stable, ensuring that the first upper mold 111 can accurately and automatically close or separate with the first lower mold 1312; and the structure is simple and compact, and the production cost is low.

[0031] It is worth noting that, in the present embodiment, the first lifting drive member 112 and the second lifting drive member 124 are both telescopic cylinders, and in other embodiments, the first lifting drive member 112 and the second lifting drive member 124 may be other lifting drives.

[0032] Specifically, the horizontal driving assembly 132 includes a sliding structure, a horizontal driving member 1321 and a transmission assembly; the bottom of the horizontal driving member 1321 is hinged to the bottom of the welding cavity 10, and the driving end of the horizontal driving member 1321 is tilted upward; the driving end of the horizontal driving member 1321 is provided with a hinge part 1322; the transmission assembly includes a first hinge rod 1331 and a second hinge rod 1332; the two ends of the first hinge rod 1331 are respectively a first fixed end and a first hinge end; the first fixed end is hinged to the side wall of the welding cavity 10; the first hinge end is provided with a hinge groove 1333; the The two ends of the second hinge rod 1332 are respectively a second fixed end and a second hinge end; the second fixed end is hinged to the sliding structure; the second hinge end is sleeved in the hinge groove 1333, and the second hinge end is rotatably connected to the first hinge end through a hinge shaft 1334; the end of the hinge shaft 1334 is hinged to the hinge portion 1322, so that the horizontal driving member 1321 can make the first hinge rod 1331 and the second hinge rod 1332 rotate around the hinge shaft 1334 by lifting its driving end; the rotation of the second hinge rod 1332 can push and pull the sliding structure to slide in the front and rear directions. Before mold closing, the mold set 131 is located at the rear end of the welding cavity 10. When mold closing is required, the horizontal driving member 1321 drives its driving end to extend upward; the driving end of the horizontal driving member 1321 extends upward, so that the first hinge end of the first hinge rod 1331 hinged thereto rotates upward. The first hinge rod 1331 rotates upward, which pushes the second hinge rod 1332 sleeved in the hinge groove 1333 forward, so that the sliding structure hinged to the second hinge rod 1332 moves forward, so that the mold set 131 moves forward to the first upper mold 111 and the second lower mold 121 for mold closing and welding. When the mold closing is completed, the horizontal driving member 1321 drives its driving end to retract downward; when the driving end of the horizontal driving member 1321 retracts downward, the first hinge end rotates downward, thereby pulling the second hinge rod 1332 to move backward. The second hinge rod 1332 moves backward, which pulls the sliding structure to move backward, so that the mold set 131 is separated from the first upper mold 111 and the second lower mold 121. In the present application, the first hinged rod 1331 and the second hinged rod 1332 are V-shaped. Such a configuration can increase the bearing capacity between the first hinged rod 1331 and the second hinged rod 1332, so that the transmission assembly can smoothly push and pull the sliding structure, thereby ensuring smooth mold closing of the mold group 131 and improving the mold closing efficiency.

[0033] In actual manufacturing, there are many types of horizontal driving member 1321, but in this application, preferably, the horizontal driving member 1321 is a telescopic cylinder. Because the telescopic cylinder has stable transmission, it can ensure that the sliding seat 1342 slides smoothly on the guide bar 1343, thereby ensuring that the mold closing or mold separation can be carried out smoothly.

[0034] Further, the sliding structure includes a guide rail seat 1341 and a sliding seat 1342; the guide rail seat 1341 is arranged in front and back of the welding chamber 10; a guide rail bar 1343 is arranged on the top of the guide rail seat 1341; a sliding member 1344 is arranged on the top of the sliding seat 1342 and is clamped with the guide rail bar 1343; the sliding member 1344 is clamped with the guide rail bar 1343, so that the sliding seat 1342 can slide along the front and rear direction on the guide rail seat 1341; the second upper mold 1311 is installed at the bottom of the sliding seat 1342; the first lower mold 1312 is installed at the top of the sliding seat 1342. When the horizontal driving member 1321 drives its driving end to extend upward, the second hinge rod 1332 will push the sliding seat 1342 to move forward on the guide rail bar 1343, so that the mold group 131 moves to close the mold between the first upper mold 111 and the second lower mold 121. When the horizontal driving member 1321 drives its driving end to retract downward, the second hinge rod 1332 pulls the sliding seat 1342 to move backward on the guide bar 1343, so that the mold set 131 moves backward and is separated from the first upper mold 111 and the second lower mold 121. In this embodiment, the sliding seat 1342 and the guide bar 1343 are provided to ensure that the mold set 131 can be smoothly and stably closed or separated from the first upper mold 111 and the second lower mold 121, so as to avoid jamming of the mold set 131 when moving, thereby ensuring the efficiency of welding.

[0035] Preferably, the rear side of the sliding seat 1342 is provided with a first hinge seat 1345; the second fixed end is hinged to the first hinge seat 1345, so that when the second hinge rod 1332 rotates around the hinge shaft 1334, the sliding seat 1342 can be pushed and pulled to slide in the front-back direction. Such a configuration makes the connection between the second hinge rod 1332 and the sliding seat 1342 compact, thereby ensuring smooth transmission.

[0036] Specifically, the rear side wall of the welding chamber 10 is provided with connecting beams 14 arranged on the left and right sides; the connecting beam 14 is provided with a second hinge seat 141, and the first fixed end is hinged to the first hinge seat 1345. When the horizontal driving member 1321 drives its driving end to extend upward or contract downward, the first hinge rod 1331 rotates upward or downward around the first fixed end, so that the first hinge rod 1331 pushes or pulls the second hinge rod 1332, thereby realizing the forward or backward movement of the sliding seat 1342.

[0037] Preferably, an exhaust pipe 15 is further provided on the top of the hot melt welding cabinet 1; one end of the exhaust pipe 15 is connected to the welding chamber 10, and the other end of the exhaust pipe 15 is connected to the outside. Because gas or smoke, even toxic gas, is generated during hot melt welding, the exhaust pipe 15 is provided so that the gas or smoke generated in the welding chamber 10 is discharged into the welding chamber 10, keeping the welding chamber 10 clean and ensuring the safety and health of the workers.

[0038] Preferably, an air supply device 16 is further provided at the bottom of the welding chamber 10. Because the horizontal driving member 1321, the first lifting driving member 112 and the second lifting driving member 124 are all telescopic cylinders, an air supply device 16 is provided at the bottom of the welding chamber 10 to provide air pressure for the telescopic cylinders to ensure stable driving of the telescopic cylinders, thereby ensuring that the welding work can proceed smoothly.

[0039] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A hot melt welding machine, characterized in that: It comprises a hot melt welding cabinet, wherein a welding cavity is provided inside the hot melt welding cabinet; The welding chamber is provided with an upper die lifting mechanism, a lower die lifting mechanism and a horizontal moving mechanism; The upper mold lifting mechanism includes a first upper mold and a first lifting drive assembly; The lower die lifting mechanism comprises a second lower die and a second lifting drive assembly; The second lower mold and the first upper mold are arranged in parallel; The horizontal moving mechanism comprises a die set and a horizontal driving assembly; The mold set includes a second upper mold and a first lower mold; The second upper mold is located below the first lower mold, and the second upper mold is arranged parallel to the first lower mold; The horizontal driving assembly is used to drive the mold set to move in the horizontal direction so that the mold set, the second lower mold and the first upper mold are in a parallel state; The first lifting drive assembly can drive the first upper mold to rise and fall in the vertical direction, so that the first upper mold and the first lower mold are separated or closed; The second lifting drive assembly can drive the second lower mold to rise and fall in the vertical direction, so that the second lower mold and the second upper mold are closed or separated; The first lifting drive assembly includes a first lifting drive member, a first mounting plate and a first lifting plate; The first mounting plate is mounted on the top of the welding chamber; The first lifting drive member is mounted on the first mounting plate, and a driving end of the first lifting drive member extends downward; The first lifting plate is connected to the driving end of the first lifting drive member, so that the first lifting drive member can drive the first lifting plate to rise and fall in the vertical direction; The first upper mold is installed at the bottom of the first lifting plate; The horizontal driving assembly includes a sliding structure, a horizontal driving member and a transmission assembly; The bottom of the horizontal driving member is hinged to the bottom of the welding chamber, and the driving end of the horizontal driving member is tilted upward; The driving end of the horizontal driving member is provided with a hinged portion; The transmission assembly includes a first hinged rod and a second hinged rod; The two ends of the first hinged rod are respectively a first fixed end and a first hinged end; The first fixed end is hinged to the side wall of the welding cavity; The first hinged end is provided with a hinged slot; The two ends of the second hinged rod are respectively a second fixed end and a second hinged end; The second fixed end is hinged to the sliding structure; The second hinged end is sleeved in the hinged groove, and the second hinged end is rotatably connected to the first hinged end via a hinge shaft; The end of the hinge shaft is hinged to the hinge part, so that the horizontal driving member can make the first hinge rod and the second hinge rod rotate around the hinge shaft by lifting and lowering its driving end; The rotation of the second hinge rod can push and pull the sliding structure to slide in the front-rear direction.

2. A hot melt welding machine according to claim 1, characterized in that: The second lifting drive assembly includes a second lifting drive member, a second mounting plate, and a second lifting plate; The second mounting plate is fixedly mounted on the bottom of the welding chamber; The second lifting drive member is mounted on the second mounting plate, and a driving end of the second lifting drive member extends upward; The second lifting plate is connected to the driving end of the second lifting drive member, so that the second lifting drive member can drive the second lifting plate to rise and fall in the vertical direction; The second lower mold is installed on the top of the second lifting plate.

3. A hot melt welding machine according to claim 1, characterized in that: The horizontal driving member is a telescopic cylinder.

4. A hot melt welding machine according to claim 1, characterized in that: The sliding structure comprises a guide rail seat and a sliding seat; The guide rail seat is arranged in front and back of the welding cavity; A guide rail bar is provided on the top of the guide rail seat; A sliding piece is provided on the top of the sliding seat and is clamped with the guide rail; The sliding member is clamped on the guide rail, so that the sliding seat can slide on the guide rail seat along the front-rear direction; The second upper mold is installed at the bottom of the sliding seat; The first lower mold is installed on the top of the sliding seat.

5. A hot melt welding machine according to claim 4, characterized in that: A first hinged seat is provided on the rear side of the sliding seat; The second fixed end is hinged to the first hinge seat, so that when the second hinge rod rotates around the hinge axis, the sliding seat can be pushed and pulled to slide in the front-rear direction.

6. A hot melt welding machine according to claim 5, characterized in that: The rear side wall of the welding cavity is provided with connecting beams arranged on the left and right sides; The connecting crossbeam is provided with a second hinge seat, and the first fixed end is hinged to the first hinge seat.

7. A hot melt welding machine according to claim 1, characterized in that: An exhaust pipe is also provided on the top of the hot melt welding cabinet; One end of the exhaust pipe is communicated with the welding chamber, and the other end of the exhaust pipe is communicated with the outside.

8. A hot melt welding machine according to claim 1, characterized in that: The bottom of the welding chamber is also provided with an air supply device.

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