A welding mechanism and a baling press

Abstract

The application discloses a kind of welding mechanism and packing machine, belong to packing machine technical field, including button, pressing assembly, platform, cutting assembly, heating assembly, the button and the pressing assembly abut, the side end of the pressing assembly is equipped with the cutting assembly, the lower end of the pressing assembly is equipped with the platform, the platform and the pressing assembly form accommodating space between, one end of the heating assembly is movably inserted into the accommodating space.The application can effectively improve the welding efficiency of the packing belt by integrally arranging the movable pressing assembly and the heating assembly, and cooperatively arranging the button and the cutting assembly; and by combining the welding mechanism and the pulling belt mechanism on the base, integrated operation is realized, the operation steps are simplified, and the portability and multi-scenario adaptability are improved.

Description

Technical Field

[0001] This invention relates to the field of packaging machine technology, and more particularly to a welding mechanism and a packaging machine. Background Technology

[0002] Baling machines are key equipment for connecting and securing strapping straps in baling operations. Currently, the mainstream welding mechanisms mainly include friction welding and electrothermal welding. Friction welding machines utilize friction blocks to generate heat on the contact surface of the strapping straps to achieve welding; however, they produce significant vibration and noise during operation, affecting the operator's experience and interfering with the working environment, thus limiting their applicability. Electrothermal welding machines rely on electric heating elements to weld the strapping straps, offering advantages such as low vibration and low noise, and are suitable for a wider range of applications.

[0003] However, existing electric heating strapping machines typically set the welding mechanism and the strapping mechanism as two independent devices. Operators need to operate the two devices alternately during the strapping process, which increases the complexity of the operation steps and reduces the strapping efficiency. On the other hand, the carrying and use of the two independent devices are also limited by factors such as space and operating habits, making it difficult to meet the needs of efficient and convenient strapping operations. Summary of the Invention

[0004] The present invention aims to overcome the problem of low integration and automation in existing electrothermal packing machines, and provides a welding mechanism and a packing machine.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: a welding mechanism is provided, including a button, a clamping component, a platform, and a heating component. The button and the clamping component abut against each other. The platform is provided at the lower end of the clamping component. An accommodating space is formed between the platform and the clamping component. One end of the heating component extends movably into the accommodating space.

[0006] In one embodiment, the heating assembly includes a heating element, a first connecting block, a second connecting block, a coil, and a push rod. One end of the heating element is disposed between the second connecting block and the first connecting block. The first connecting block is fixedly connected to the push rod, and the coil is sleeved outside the push rod.

[0007] In one embodiment, the heating assembly further includes a second connector and a third elastic member. The second connector is disposed at the bottom end of the second connecting block, and the third elastic member is sleeved on the second connector. The ends of the third elastic member abut against the bottom end of the second connecting block and the end of the third elastic member, respectively. Heat insulation sheets are provided between the heating element and the second connecting block, and between the heating element and the first connecting block. The heating element, the heat insulation sheet, and the second connecting block form an integral assembly that slides up and down on the second connector.

[0008] In one embodiment, the clamping assembly includes an outer cylinder, a driven member, a pressure block, a first connecting member, a first elastic member, and a second elastic member. The driven member is provided at the upper end of the outer cylinder, and the pressure block is nested inside the outer cylinder. The pressure block is fixedly connected to one end of the first connecting member, and the other end of the first connecting member is movably disposed inside the outer cylinder. The first elastic member is disposed outside the outer cylinder, and its two ends abut against the frame and the flange of the outer cylinder, respectively. The second elastic member is disposed inside the outer cylinder and sleeved on the first connecting member, and its two ends abut against the inner top wall of the outer cylinder and the top of the pressure block, respectively.

[0009] In one embodiment, the button includes a button body, a pressing part, a limiting part, a cam, and a connecting hole. The pressing part and the cam are respectively disposed at both ends of the button body. The limiting part is disposed at the end of the button body where the pressing part is disposed, and the connecting hole is disposed at the end of the button body where the cam is disposed. The cam abuts against the follower of the pressing assembly.

[0010] In one embodiment, the cam has a first curved portion, a second curved portion, and a third curved portion. The first curved portion and the third curved portion are located on both sides of the second curved portion. The third curved portion is an inwardly recessed part of the cam. The shape of the third curved portion matches the outer edge shape of the follower of the clamping assembly. The radius of curvature of the second curved portion is greater than the radius of curvature of the first curved portion and the third curved portion. The connecting hole is eccentrically positioned, and the distance between the center of the connecting hole and the outer edge of the second curved portion is less than the distance between the center of the connecting hole and the outer edge of the first curved portion or the third curved portion. The welding mechanism further includes a control element, and the cam contacts or disconnects from the control element to generate a control signal.

[0011] In one embodiment, the welding mechanism further includes a cutting assembly disposed on the side end of the pressing assembly; the cutting assembly includes a cutting blade, a heat insulation plate, a mounting plate, and an outer plate, the cutting blade is disposed between the outer plate and the mounting plate, the heat insulation plate is provided between the cutting blade and the outer plate and between the cutting blade and the mounting plate, and the mounting plate is fixedly connected to the outer cylinder of the pressing assembly.

[0012] In one embodiment, the welding mechanism further includes a separator plate disposed on one side of the platform, with an upper and lower packing strapping that overlap each other disposed at the upper and lower ends of the separator plate, respectively.

[0013] The present invention also provides a packing machine, including a housing, a frame and a base, the housing being disposed on the base and the frame being disposed between the base and the housing, and further including a welding mechanism as described above, the welding mechanism being disposed on the base and connected to the frame.

[0014] The present invention also provides a packing machine, including a housing, a base, a frame, and a strapping mechanism. The housing is disposed on the base, and the frame and the strapping mechanism are disposed between the base and the housing. The strapping mechanism is connected to the frame. The machine also includes a welding mechanism as described above, which is disposed on the base and connected to the frame.

[0015] In summary, this application provides a welding mechanism and a packing machine. By integrating the movable pressing component and the heating component, and coordinating the button and the cutting component, the welding efficiency of the packing strap is effectively improved. Furthermore, by combining the welding mechanism and the strap pulling mechanism on the base, integrated operation is achieved, simplifying the operation steps and improving portability and adaptability to multiple scenarios.

[0016] To make the above-mentioned features and advantages of the invention more apparent and understandable, specific embodiments are described below, and detailed descriptions are provided in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the packaging machine in this invention.

[0018] Figure 2 for Figure 1 The front view.

[0019] Figure 3 for Figure 1 The first sectional view.

[0020] Figure 4 for Figure 1 The second sectional view.

[0021] Figure 5 This is a diagram showing the first usage state of the packaging machine in this invention.

[0022] Figure 6 This is a diagram showing the second usage state of the packaging machine in this invention.

[0023] Figure 7 This is a diagram showing the third usage state of the packaging machine in this invention.

[0024] Figure 8 This is a diagram showing the fourth usage state of the packaging machine in this invention.

[0025] Figure label:

[0026] Welding mechanism-1;

[0027] Button -11;

[0028] Button body - 111; Pressing part - 112; Limiting part - 113; Cam - 114; Connecting hole - 115;

[0029] First section - 1141; Second section - 1142; Third section - 1143;

[0030] Clamping assembly-12;

[0031] Outer cylinder-121; Follower-122; Pressure block-123; First connecting member-124; First elastic member-125; Second elastic member-126;

[0032] Stepped structure - 1211; Protrusion - 1241;

[0033] Platform-13;

[0034] Cutting component-14;

[0035] Cutting disc - 141; Insulation board - 142; Mounting plate - 143; Outer panel - 144;

[0036] Heating component -15;

[0037] Heating element - 151; First connecting block - 152; Second connecting block - 153; Coil - 154; Push rod - 155; Housing - 156; Heat insulation sheet - 157;

[0038] Second connector - 1531; Third connector - 1532; Third elastic element - 1533;

[0039] Control element-16;

[0040] Connecting terminal -17;

[0041] First connecting terminal-171; Second connecting terminal-172;

[0042] Separator-18;

[0043] Belt pulling mechanism-2;

[0044] Belt pulley-21; toothed plate-22; end cap-23; handle-24; drive assembly-25; transmission assembly-26;

[0045] Crossbar -241;

[0046] Base -3;

[0047] Rack-4. Detailed Implementation

[0048] To make the objectives and technical solutions of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0049] In order to overcome the problem of low integration and automation in existing electric heating packaging machines, this invention provides a welding mechanism and a packaging machine. Figure 1 This is a schematic diagram of the packaging machine in this invention. Figure 1 As shown, the welding mechanism 1 includes a button 11, a clamping assembly 12, a platform 13, a cutting assembly 14, and a heating assembly 15. The button 11 and the clamping assembly 12 abut against each other. The cutting assembly 14 is located at the side end of the clamping assembly 12, and the platform 13 is located at the lower end of the clamping assembly 12. A receiving space is formed between the platform 13 and the clamping assembly 12. One end of the heating assembly 15 extends movably into the receiving space. The welding mechanism 1 also includes a separator 18, which is disposed on one side of the platform 13.

[0050] Combination Figure 2As shown, the button 11 includes a button 11 body, a pressing part 112, a limiting part 113, a cam 114, and a connecting block 115. The pressing part 112 and the cam 114 are respectively disposed at both ends of the button 11 body. The limiting part 113 is disposed at the end of the button 11 body where the pressing part 112 is located, and the connecting block 115 is disposed at the end of the button 11 body where the cam 114 is located. The cam 114 is provided with a first curved part 1141, a second curved part 1142, and a third curved part 1143. The second curved part 1142 is disposed at the end of the cam 114 away from the pressing part 112. The first curved part 1141 and the third curved part 1143 are disposed on both sides of the second curved part 1142. The first curved part 1141 and the limiting part 113 are located on the same side. The third curved portion 1143 is an inwardly recessed part of the cam 114, and its shape matches the outer edge shape of the follower 122. The radius of curvature of the second curved portion 1142 is greater than the radii of curvature of the first curved portion 1141 and the third curved portion 1143; and the connecting block 115 is eccentrically positioned, with the distance between the center of the connecting block 115 and the outer edge of the second curved portion 1142 being less than the distance between the center of the connecting block 115 and the outer edge of either the first curved portion 1141 or the third curved portion 1143. The connecting block 115 is used to mount a rotating shaft, allowing the button 11 to rotate around the rotating shaft. During rotation, the second curved portion 1142 and the third curved portion 1143 sequentially contact the driven member 122. Because the connecting block 115 is eccentrically positioned and the radius of curvature of the second curved portion 1142 is greater than that of the third curved portion 1143, the driven member 122 will move linearly as the button 11 rotates. Meanwhile, the first curved portion 1141 will contact or disconnect from the control element 16 during rotation to transmit the rotational position of the button 11. The pressing part 112 allows the user to manually control the rotational position of the button 11, and the limiting part 113 can abut against the frame 4 to prevent excessive rotation of the button 11.

[0051] It is worth noting that the control element 16 is mounted on the frame 4 and is connected to the control system. When the first curved section 1141 and the control element 16 disconnect, the control element 16 will generate a signal and transmit it to the control system to control the melting time.

[0052] Combination Figure 3It is understood that the pressing assembly 12 includes an outer cylinder 121, a driven member 122, a pressing block 123, a first connecting member 124, a first elastic member 125, and a second elastic member 126. The driven member 122 is provided at the upper end of the outer cylinder 121, and the pressing block 123 is nested inside the outer cylinder 121. One end of the pressing block 123 is fixedly connected to one end of the first connecting member 124, and the other end of the first connecting member 124 is relatively movably disposed inside the outer cylinder 121. The first elastic member 125 is disposed outside the outer cylinder 121, and the two ends of the first elastic member 125 abut against the frame 4 and the flange of the outer cylinder 121, respectively. The second elastic member 126 is disposed inside the outer cylinder 121 and sleeved on the first connecting member 124, and the two ends of the second elastic member 126 abut against the inner top wall of the outer cylinder 121 and the top of the pressing block 123, respectively. Preferably, the driven member 122 is a roller to reduce friction between the cam 114 and the driven member 122. The inner wall of the outer cylinder 121 is provided with a stepped structure 1211, and the end of the first connecting member 124 is correspondingly provided with a protrusion 1241. The protrusion 1241 and the stepped structure 1211 can form a relative limiting position. A certain distance is left between the stepped structure 1211 and the bottom end of the driven member 122 to allow the first connecting member 124 to move. When the cam 114 rotates clockwise, the driven member 122 is subjected to a downward force, which in turn causes the pressing assembly 12 to move downward, and the first elastic member 125 will be deformed under pressure. When the cam 114 rotates counterclockwise, the pressing assembly 12 will be subjected to an upward force from the first elastic member 125 and move upward. When the bottom of the pressure block 123 contacts the packing strap, it will be subjected to an upward force and squeeze the second elastic member 126, causing the pressure block 123 and the first connecting member 124 to move upward. When the force on the bottom of the pressure block 123 decreases or disappears, the second elastic member 126 pushes the pressure block 123 downward until the protrusion 1241 and the stepped structure 1211 abut.

[0053] The heating assembly 15 includes a heating element 151, a first connecting block 152, a second connecting block 153, a coil 154, a push rod 155, a housing 156, and a heat insulation sheet 157. One end of the heating element 151 is disposed between the second connecting block 153 and the first connecting block 152. Heat insulation sheets 157 are provided between the heating element 151 and the second connecting block 153, and between the heating element 151 and the first connecting block 152. The first connecting block 152 and the push rod 155 (see...) Figure 1The push rod 155 is fixedly connected to the housing 156, which is fixed to the frame 4. The coil 154 is disposed inside the housing 156 and sleeved outside the push rod 155. When the coil 154 is energized, the push rod 155 moves horizontally under electromagnetic drive, thereby driving the first connecting block 152, the second connecting block 153, and the heating element 151 to move horizontally, inserting the end of the heating element 151 between the pressure block 123 and the platform 13 or removing it from between the pressure block 123 and the platform 13. The second connecting block 153 has a second connecting member 1531 and a third connecting member 1532 at its bottom end. The third connecting member 1532 fixes the heat insulation sheet 157 and the heating sheet 151 to the second connecting block 153. The third connecting member 1532, the heat insulation sheet 157, the heating sheet 151, and the second connecting block 153 form a whole and slide up and down on the second connecting member 1531. The third connecting member 1532 can move up and down within its mounting through hole. A third elastic member 1533 is also sleeved on the second connecting member 1531. The ends of the third elastic member 1533 abut against the bottom end of the second connecting block 153 and the end of the second connecting member 1531, respectively. When the heating sheet 157 is subjected to a downward force from the pressure block 123, the third elastic member 1533 is pressed tightly, causing the heating plate and the second connecting block 153 to move downward.

[0054] Combination Figure 4 As shown, the cutting assembly 14 includes a cutting blade 141, a heat insulation plate 142, a mounting plate 143, and an outer plate 144. The cutting blade 141 is disposed between the outer plate 144 and the mounting plate 143. The heat insulation plate 142 is provided between the cutting blade 141 and the outer plate 144, and between the cutting blade 141 and the mounting plate 143. The mounting plate 143 and the outer cylinder 121 (see...) Figure 3 The cutting assembly 14 will move vertically in coordination with the clamping assembly 12 and melt off any excess portion of the packing strap.

[0055] It is worth noting that, combined Figure 1 and Figure 5 It can be seen that both the cutting plate 141 and the heating plate 151 are connected to the connecting terminal 17. In fact, the cutting plate 141 is connected to the first connecting terminal 171, and the heating plate 151 is connected to the second connecting terminal 172 to realize the electric heating function.

[0056] The platform 13 has raised grooves to increase the friction between the platform 13 and the packing straps. A separator 18 is provided on one side of the platform 13, with its mounting end face located between the pressure block 123 and the platform 13 to separate overlapping packing straps. It is worth noting that the bottom end of the cutting blade 141 after being pressed down is not lower than the position of the separator 18 to prevent the cutting blade 141 from melting the lower layer of packing straps.

[0057] In addition, the present invention also provides a packing machine, which includes the above-mentioned welding mechanism 1, outer shell (not shown in the figure), frame 4 and base 3. The outer shell is disposed on the base 3, the frame 4 is disposed between the base 3 and the outer shell, the welding mechanism 1 is disposed on the base 3, and the welding mechanism 1 and the frame 4 are connected.

[0058] Furthermore, the strapping machine may also include a strap pulling mechanism 2, with the welding mechanism 1 disposed between the base 3 and the outer casing. The strap pulling mechanism 2 is connected to the frame 4, and is used to tighten the strapping for further welding. The strap pulling mechanism 2 includes a strap pulling wheel 21, a toothed plate 22, an end cap 23, a handle 24, a drive assembly 25, and a transmission assembly 26. The strap pulling wheel 21 and the toothed plate 22 are spaced apart. The strap pulling wheel 21 is disposed within the end cap 23. The strap pulling wheel 21 is connected to the transmission assembly 26, and the transmission assembly 26 is connected to the drive assembly 25. The handle 24 is connected to the strap pulling wheel 21 via the transmission assembly 26. Both the strap pulling wheel 21 and the toothed plate 22 are provided with protruding teeth. Preferably, the protruding teeth on the toothed plate 22 are opposite to the direction of movement of the strapping, while the protruding teeth on the strap pulling wheel 21 are in the same direction as the direction of movement of the strapping. The toothed plate 22 and the strap pulling wheel 21 will apply opposite forces to the strapping. The handle 24 is provided with a crossbar 241, one end of which is connected to the handle 24, and the other end of which extends below the button 11 so that the button 11 can be lifted together when the handle 24 is lifted. When the handle 24 is lifted, the transmission component 26 will drive the end cap 23 and the pull wheel 21 to lift, creating an installation gap between the pull wheel 21 and the toothed plate 22 for placing the packing strap; when the handle 24 is pressed down, the transmission component 26 will drive the end cap 23 and the pull wheel 21 to press down, and the pull wheel 21 and the toothed plate 22 will contact the overlapping upper and lower packing straps respectively; the drive component 25 can drive the pull wheel 21 to rotate through the transmission component 26, so that the packing strap is tightened.

[0059] The following combination Figures 1 to 8 It can be seen that when not in use (refer to the unused state) Figure 1The handle 24 is in a depressed state, and the gap between the pull puller 21 and the slot tooth plate 22 is small; the limiting part 113 of the button 11 is in contact with the top of the frame 4, the first curved part 1141 and the control unit 16 abut against each other, and the second curved part 1142 abuts against the follower 122.

[0060] In the first use state (refer to) Figure 1 First, lift the handle 24 to create an installation gap between the pulley 21 and the toothed plate 22. Place one end of the packing strap A, which is wound on the base 3, on the toothed plate 22 and pass it through the lower end of the separator 18; then, wrap the other end of the packing strap A around the base 3, pass it through the installation gap between the toothed plate 22 and the pulley 21, and pass it through the upper end of the separator 18.

[0061] When entering the second usage state (refer to) Figure 6 Pressing down the handle 24 causes the pulley 21 to press down, and the pulley 21 and the toothed plate 22 contact the upper and lower end faces of the packing strap A, respectively. Pressing the control switch causes the drive assembly 25 to tighten the packing strap A through the transmission assembly 26, and the control system actuates the coil 154 so that the heating element 151 extends into the space between the packing straps A, which are separated by the separator 18. After the packing strap A is tightened, the control system will control the drive assembly 25 to stop operating. When button 11 is pressed, the driven member 122 disengages from the second curved part 1142 and abuts against the third curved part 1143. The cam 114 presses down the pressing assembly 12 and drives the cutting assembly 14 to press down. At this time, the first elastic member 125 is in a compressed state. At the same time, the first curved part 1141 gradually disengages from the control element 16 and generates a control signal. After receiving the control signal, the control system controls the coil 154 to electromagnetically drive the push rod 155 to move after a certain heating time, thereby driving the heating element 151 to withdraw from between the overlapping packing straps A. During the heating time, as the pressure block 123 is pressed down, the lower surface of the upper packing strap and the upper surface of the lower packing strap come into direct contact with the heating plate 151, and the heating plate 151 heats the packing strap A to a molten state; the pressure block 123 is subjected to the upward reaction force of the heating plate 151, and the second elastic element 126 is compressed; and the cutting plate 141 comes into direct contact with the protruding end of the upper packing strap and melts off.

[0062] After the packing tape A has fully absorbed heat and is in a molten state, i.e., after the heating time of the control system has ended, it enters the third usage state (see...). Figure 7The control system controls the coil 154 to electromagnetically drive the push rod 155 back to its original position, causing the heating element 151 to retract; the second elastic element 126 resets and drives the pressure block 123 downward, and the pressure block 123 and the platform 13 work together to press the overlapping packing strap A.

[0063] After entering the fourth usage state (see...) Figure 8 The control system will further issue a prompt after the overlapping packing straps A have fused and cooled according to the cooling time. The user will then lift the handle 24 according to the prompt, and the pull wheel 21 will be lifted accordingly. The crossbar 241 will drive the button 11 to reset, the first elastic element 125 will reset, and the pressing assembly 12 will be lifted. The gap between the pressing block 123 and the platform 13, as well as between the pull wheel 21 and the toothed plate 22, will be re-formed so that the fused packing straps A can be removed.

[0064] In summary, this application provides a welding mechanism and a packing machine. By integrating the movable pressing component 12 and the heating component 15, and coordinating the button 11 and the cutting component 14, the welding efficiency of the packing strap is effectively improved. Furthermore, by combining the welding mechanism 1 and the strap pulling mechanism 2 on the base 3, integrated operation is achieved, simplifying the operation steps and improving portability and adaptability to multiple scenarios.

[0065] Although the present invention has been disclosed above by way of embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A welding mechanism, characterized in that, The device includes a button, a clamping assembly, a platform, and a heating assembly. The button and the clamping assembly abut against each other. The platform is located at the lower end of the clamping assembly. A receiving space is formed between the platform and the clamping assembly. One end of the heating assembly extends movably into the receiving space.

2. The welding mechanism as described in claim 1, characterized in that, The heating assembly includes a heating element, a first connecting block, a second connecting block, a coil, and a push rod. One end of the heating element is disposed between the second connecting block and the first connecting block. The first connecting block is fixedly connected to the push rod, and the coil is sleeved on the outside of the push rod.

3. A welding mechanism as described in claim 2, characterized in that, The heating assembly further includes a second connector and a third elastic member. The second connector is disposed at the bottom end of the second connecting block, and the third elastic member is sleeved on the second connector. The ends of the third elastic member abut against the bottom end of the second connecting block and the end of the third elastic member, respectively. Heat insulation sheets are provided between the heating element and the second connecting block and between the heating element and the first connecting block. The heating element, the heat insulation sheet, and the second connecting block form an integral assembly that slides up and down on the second connector.

4. A welding mechanism as described in claim 1, characterized in that, The clamping assembly includes an outer cylinder, a driven member, a pressure block, a first connecting member, a first elastic member, and a second elastic member. The driven member is located at the upper end of the outer cylinder, and the pressure block is nested inside the outer cylinder. The pressure block is fixedly connected to one end of the first connecting member, and the other end of the first connecting member is movably disposed inside the outer cylinder. The first elastic member is disposed outside the outer cylinder, and its two ends abut against the frame and the flange of the outer cylinder, respectively. The second elastic member is disposed inside the outer cylinder and sleeved on the first connecting member, and its two ends abut against the inner top wall of the outer cylinder and the top of the pressure block, respectively.

5. A welding mechanism as described in claim 1, characterized in that, The button includes a button body, a pressing part, a limiting part, a cam, and a connecting hole. The pressing part and the cam are respectively disposed at both ends of the button body. The limiting part is disposed at the end of the button body where the pressing part is disposed, and the connecting hole is disposed at the end of the button body where the cam is disposed. The cam abuts against the driven member of the pressing assembly.

6. A welding mechanism as described in claim 5, characterized in that, The cam has a first curved portion, a second curved portion, and a third curved portion. The first curved portion and the third curved portion are located on both sides of the second curved portion. The third curved portion is an inwardly recessed part of the cam. The shape of the third curved portion matches the outer edge shape of the follower of the clamping assembly. The radius of curvature of the second curved portion is greater than the radius of curvature of the first curved portion and the third curved portion. The connecting hole is eccentrically positioned. The distance between the center of the connecting hole and the outer edge of the second curved portion is less than the distance between the center of the connecting hole and the outer edge of the first curved portion or the third curved portion. The welding mechanism also includes a control element. The cam contacts or disconnects from the control element to generate a control signal.

7. A welding mechanism as described in claim 1, characterized in that, The welding mechanism further includes a cutting assembly, which is disposed on the side end of the pressing assembly. The cutting assembly includes a cutting blade, a heat insulation plate, a mounting plate, and an outer plate. The cutting blade is disposed between the outer plate and the mounting plate. The heat insulation plate is provided between the cutting blade and the outer plate, and between the cutting blade and the mounting plate. The mounting plate is fixedly connected to the outer cylinder of the pressing assembly.

8. A welding mechanism as described in claim 1, characterized in that, The welding mechanism also includes a separator, which is disposed on one side of the platform, with an upper and lower packing strap that overlap each other and are respectively disposed at the upper and lower ends of the separator.

9. A packing machine, comprising a housing, a frame, and a base, wherein the housing is disposed on the base, and the frame is disposed between the base and the housing, characterized in that, It also includes a welding mechanism as described in any one of claims 1-8, the welding mechanism being disposed on the base and connected to the frame.

10. A packing machine, comprising a housing, a base, a frame, and a strapping mechanism, wherein the housing is disposed on the base, the frame and the strapping mechanism are disposed between the base and the housing, and the strapping mechanism is connected to the frame, characterized in that, It also includes a welding mechanism as described in any one of claims 1-8, the welding mechanism being disposed on the base and connected to the frame.

Images