Hot melt welder

Abstract

The utility model relates to hot melting welding technical field discloses hot melting welding machine. In hot melting welding machine, first rack includes along the first tooth surface of first gear and / or second gear with up and down extension, first rack still includes the second tooth surface of abutment with first locking assembly and / or second locking assembly, second tooth surface extends along up and down direction, first tooth surface is adjacent with second tooth surface and is arranged in angle, can realize the lifting of upper and lower mould unit through the meshing of first tooth surface of first rack and gear, realizes the locking of mould unit through the abututement of second tooth surface and locking assembly, only utilizes first rack to complete two functions of lifting and locking, simplifies the structure of hot melting welding machine, reduces additional locking parts, reduces cost and equipment complexity, improves the precision and stability of mould unit positioning, and the overall reliability and durability of equipment.

Description

Technical Field

[0001] This utility model relates to the field of hot melt welding technology, and in particular to a hot melt welding machine. Background Technology

[0002] In the production and processing of plastic products, hot melt welding is a common and important connection method. It melts the contact surfaces of the plastic parts to be connected by heating, and then achieves a stable connection by pressurizing and cooling. It is widely used in the processing of plastic products such as pipes and sheets.

[0003] Currently, some hot melt welding machines are equipped with independent lifting drive structures and locking positioning structures to realize the up and down movement and position fixation of the mold. However, in actual operation, especially during frequent mold height adjustments or long-term use, there are problems such as the easy decrease in the accuracy of the lifting drive and locking mechanism, the complex overall structure leading to a high equipment failure rate, large space occupation, and cumbersome operation steps.

[0004] Therefore, there is an urgent need for a hot melt welding machine, which can solve the problems of complex structure, easy loss of accuracy, and high failure rate caused by the need for multiple components to implement the lifting and locking functions in existing hot melt welding machines. Utility Model Content

[0005] The purpose of this utility model is to provide a hot melt welding machine that can solve the problems of complex structure, easy loss of accuracy and high failure rate caused by the need for multiple components to realize the lifting and locking functions in existing hot melt welding machines. It can realize the simultaneous completion of mold lifting drive and position locking by a single first rack component, simplifying the equipment structure, improving the convenience of operation and long-term stability.

[0006] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0007] Hot melt welding machine, including:

[0008] The frame unit includes the welding machine frame;

[0009] The mold sliding unit includes a pair of first racks, which extend in a vertical direction and are mounted opposite each other on the left and right sides of the welding machine frame.

[0010] The upper mold unit includes an upper mold connecting assembly, a first locking assembly, and a first driving assembly. The first driving assembly includes a first gear, which is mounted on the left or right outer side wall of the upper mold connecting assembly and meshes with the corresponding first rack.

[0011] The lower mold unit includes a lower mold connecting assembly, a second locking assembly, and a second driving assembly. The second driving assembly includes a second gear, which is mounted on the left or right outer side wall of the lower mold connecting assembly and meshes with the corresponding first rack.

[0012] A heating unit is mounted on the frame unit and disposed between the upper mold unit and the lower mold unit for heating the parts to be connected that are housed in the upper mold unit and the lower mold unit.

[0013] The first rack includes a first tooth surface extending vertically and abutting the first gear or the second gear. The first rack also includes a second tooth surface abutting the first locking component or the second locking component. The second tooth surface extends vertically, and the first tooth surface and the second tooth surface are adjacent to each other and arranged at an angle, so that the upper mold unit and the lower mold unit can achieve their lifting and locking only through the first rack.

[0014] As an optional solution for the hot melt welding machine, the first locking assembly includes a first locking cylinder and a first latch. The first locking cylinder is installed in the upper mold unit, and the first latch is installed at the output end of the first locking cylinder. The first locking cylinder can drive the first latch to extend out of the upper mold unit and abut against the second tooth surface to achieve locking. The first locking cylinder can also drive the first latch to retract.

[0015] And / or, the second locking assembly includes a second locking cylinder and a second latch. The second locking cylinder is installed in the lower mold unit, and the second latch is installed at the output end of the second locking cylinder. The second locking cylinder can drive the second latch to extend out of the lower mold unit and abut against the second tooth surface to achieve locking. The second locking cylinder can also drive the second latch to retract.

[0016] As an optional feature of this hot melt welding machine, the mold sliding unit also includes:

[0017] The first slide rail is installed on the left and right sides of the welding machine frame. The first slide rail extends in the vertical direction and is arranged parallel to and spaced apart from the first rack.

[0018] The first slider is connected to the upper mold unit or the lower mold unit respectively, and the first slider is also mounted on the first slide rail and slidably connected to the first slide rail.

[0019] As an optional configuration for this hot melt welding machine, the first gear is provided in two parts, and the first drive assembly includes:

[0020] A first servo motor is mounted on the upper mold connection assembly;

[0021] A first speed reducer is mounted on and cooperates with the first servo motor;

[0022] A first drive shaft is mounted on the first reducer. The two ends of the first drive shaft pass through the left and right walls of the upper mold connecting assembly, respectively, and are connected to the first gear.

[0023] The first tensioning mechanism is mounted on the upper mold connection assembly.

[0024] As an optional configuration for this hot melt welding machine, the second gear is provided in two parts, and the second drive assembly includes:

[0025] A second servo motor is mounted on the lower mold connection assembly;

[0026] The second speed reducer is mounted on and cooperates with the second servo motor;

[0027] The second drive shaft is mounted on the second reducer. Both ends of the second drive shaft pass through the left and right side walls of the lower mold connecting assembly, respectively, and are connected to the second gear.

[0028] The second tensioning mechanism is installed on the lower mold connecting assembly.

[0029] As an optional solution for this hot melt welding machine, the upper mold connection assembly includes:

[0030] An upper mold support frame is provided, with the upper mold mounted under the upper mold support frame. The upper mold support frame is mounted on the mold sliding unit and can move up and down relative to the welding machine frame.

[0031] A positioning pin, which passes sequentially through the upper mold and the upper mold support frame;

[0032] A clamping cylinder is mounted on the upper mold support frame. The output end of the clamping cylinder extends downward and bends inward at the end, and can reciprocate in the up-down direction to clamp or release the upper mold, thereby enabling convenient assembly and disassembly of the upper mold.

[0033] As an optional solution for this hot melt welding machine, the lower mold connection assembly includes:

[0034] The lower mold support frame is mounted on the lower mold support frame, which is mounted on the mold sliding unit. The lower mold support frame can move up and down relative to the welding machine frame.

[0035] A lifting cylinder is installed at the bottom of the lower mold support frame. The output end of the lifting cylinder can extend out of the lower mold support frame and can move in the vertical direction. The output end of the lifting cylinder can abut against the lower mold. The lifting cylinder is used to push out the lower mold to realize convenient disassembly and assembly of the lower mold.

[0036] A positioning cylinder is installed on the lower mold support frame. The positioning cylinder is located at the left and right ends of the lower mold support frame. The output end of the positioning cylinder extends in opposite directions and is used to position the lower mold.

[0037] As an optional feature of this hot melt welding machine, the heating unit includes:

[0038] Heating element;

[0039] A hot plate sliding assembly includes a hot plate slide frame, a pair of hot plate guide rails extending in the front-rear direction and spaced parallel to each other, and a pair of mounting grooves. The hot plate guide rails are mounted on the left and right sides of the welding machine frame. The hot plate slide frame is slidably mounted on the pair of hot plate guide rails. The mounting grooves are mounted on the hot plate slide frame. The heating element has mounting protrusions protruding in the left and right directions, and the mounting protrusions are mounted in the mounting grooves.

[0040] As an optional solution for the hot melt welding machine, the heating unit also includes a hot plate limiting assembly, which further includes limiting cylinders. There are three limiting cylinders, which are arranged on the hot plate slide frame and on the left, right and rear sides of the heating element. The output ends of the limiting cylinders on the left and right sides move in the front-back direction, and the output end of the limiting cylinder on the rear side moves in the left-right direction. The limiting cylinders can limit the position of the heating element.

[0041] As an optional feature of this hot melt welding machine, the frame unit also includes:

[0042] The outer casing is fitted over the welding machine frame;

[0043] An automatic door that can open and close vertically is mounted on the housing.

[0044] The beneficial effects of this utility model are as follows:

[0045] This utility model proposes a hot melt welding machine. The mold sliding unit includes a pair of first racks extending vertically and mounted opposite each other on the left and right sides of the welding machine frame. The upper mold unit includes an upper mold connecting assembly, a first locking assembly, and a first driving assembly. The first driving assembly includes a first gear mounted on the left or right outer wall of the upper mold connecting assembly and meshing with a corresponding first rack. The lower mold unit includes a lower mold connecting assembly, a second locking assembly, and a second driving assembly. The second driving assembly includes a second gear mounted on the left or right outer wall of the lower mold connecting assembly and meshing with a corresponding first rack. A heating unit is mounted on the frame unit and positioned between the upper and lower mold units. The first rack is used to heat the parts to be connected, which are housed in the upper and lower mold units. The first rack includes a first tooth surface extending vertically and abutting against the first gear and / or the second gear. The first rack also includes a second tooth surface abutting against the first locking component and / or the second locking component. The second tooth surface extends vertically, and the first tooth surface and the second tooth surface are adjacent to each other and arranged at an angle. The upper and lower mold units can be raised and lowered by meshing the first tooth surface of the first rack with the gear, and the mold units can be locked by abutting against the locking component with the second tooth surface. The two functions of raising and lowering and locking can be completed using only the first rack, which simplifies the structure of the hot melt welding machine, reduces additional locking components, reduces costs and equipment complexity, improves the positioning accuracy and stability of the mold unit, and enhances the overall reliability and durability of the equipment. Attached Figure Description

[0046] Figure 1 This is a first structural schematic diagram of the hot melt welding machine provided in this embodiment of the utility model;

[0047] Figure 2 This is a first structural schematic diagram of the upper mold unit provided in this embodiment of the utility model;

[0048] Figure 3 This is a schematic diagram of the second structure of the lower mold unit provided in this embodiment of the utility model;

[0049] Figure 4 This is a first structural schematic diagram of the heating unit provided in this embodiment of the utility model;

[0050] Figure 5 This is a schematic diagram of the second structure of the heating unit provided in this embodiment of the present invention;

[0051] Figure 6 This is a first structural schematic diagram of the hot melt welding machine provided in this embodiment of the utility model.

[0052] In the picture:

[0053] 1. Frame unit; 11. Welding machine frame; 12. Housing; 13. Automatic door;

[0054] 2. Mold sliding unit; 21. First rack; 211. First tooth surface; 212. Second tooth surface; 22. First slide rail; 23. First slider;

[0055] 3. Upper mold unit; 31. Upper mold connecting assembly; 311. Upper mold support frame; 312. Clamping cylinder; 32. First locking assembly; 33. First drive assembly; 331. First gear; 332. First servo motor; 333. First reducer; 334. First transmission shaft; 335. First tensioning mechanism;

[0056] 4. Lower mold unit; 41. Lower mold connecting assembly; 411. Lower mold support frame; 412. Lifting cylinder; 413. Positioning cylinder; 42. Second drive assembly; 421. Second gear; 422. Second servo motor; 423. Second reducer; 424. Second transmission shaft; 425. Second tensioning mechanism;

[0057] 5. Heating unit; 51. Heating element; 52. Hot plate sliding assembly; 521. Hot plate slide frame; 522. Hot plate guide rail; 523. Mounting slot; 524. Limiting cylinder; 53. Hot plate drive assembly; 531. Second rack; 532. Third gear; 533. Third servo motor; 534. Third transmission shaft; 535. Third reducer; 536. Third tensioning mechanism. Detailed Implementation

[0058] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effects achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0059] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0060] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0061] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0062] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0063] This embodiment discloses a hot melt welding machine, such as Figures 1-5As shown, in this embodiment, the hot melt welding machine includes a frame unit 1, a mold sliding unit 2, an upper mold unit 3, a lower mold unit 4, and a heating unit 5. The frame unit 1 includes a welding machine frame 11. The mold sliding unit 2 includes a pair of first racks 21, which extend vertically and are mounted opposite each other on the left and right sides of the welding machine frame 11. The upper mold unit 3 includes an upper mold connecting assembly 31, a first locking assembly 32, and a first driving assembly 33. The first driving assembly 33 includes a first gear 331, which is mounted on the left or right outer side wall of the upper mold connecting assembly 31 and meshes with the corresponding first rack 21. The lower mold unit 4 includes a lower mold connecting assembly 41, a second locking assembly, and a second driving assembly 42. The second driving assembly 42 includes... The second gear 421 is installed on the left or right outer wall of the lower mold connecting assembly 41. The second gear 421 meshes with the corresponding first rack 21. The heating unit 5 is installed on the frame unit 1 and is located between the upper mold unit 3 and the lower mold unit 4. It is used to heat the parts to be connected that are housed in the upper mold unit 3 and the lower mold unit 4. The first rack 21 includes a first tooth surface 211 extending vertically and intersecting with the first gear 331 or the second gear 421. The first rack 21 also includes a second tooth surface 212 that abuts against the first locking assembly 32 or the second locking assembly. The second tooth surface 212 extends vertically. The first tooth surface 211 and the second tooth surface 212 are adjacent to each other and arranged at an angle, so that the upper mold unit 3 and the lower mold unit 4 can achieve their lifting and locking only through the first rack 21. When connecting the parts to be connected, first install the upper mold and the lower mold on the upper mold connecting assembly 31 of the upper mold unit 3 and the lower mold connecting assembly 41 of the lower mold unit 4, respectively. Then, accommodate the parts to be connected in the upper mold and the lower mold, respectively. Next, activate the first drive assembly 33 of the upper mold unit 3 and the second drive assembly 42 of the lower mold unit 4. This causes the first gear 331 to mesh and rotate along the first tooth surface 211 of the first rack 21 on the left and right sides of the welding machine frame 11, and the second gear 421 to mesh and rotate along the corresponding first tooth surface 211 of the first rack 21. This drives the upper mold unit 3 and the lower mold unit 4 to move up and down along the first rack 21, adjusting them to the position of the welding machine frame 11. After the heating unit 5 is positioned, the first locking component 32 and the second locking component abut against the second tooth surface 212 of the first rack 21 to lock the upper mold unit 3 and the lower mold unit 4. Finally, the heating unit 5, which is installed on the frame unit 1 and located between the two, is activated to heat the internal parts to be connected, completing the heat melting process. After the heat melting process is completed, the heating unit 5 is removed, the locking is released, and then the first drive component 33 and the second drive component 42 are activated to drive the upper mold unit 3 and the lower mold unit 4 to move towards each other along the first rack 21, so that the upper mold and the lower mold are closed, and the parts to be connected are pressed and bonded, completing the final heat melting connection process.

[0064] Preferably, such as Figure 1 and Figure 2 As shown, in this embodiment, the first tooth surface 211 is a helical tooth surface and the second tooth surface 212 is a straight tooth surface. The helical tooth surface 211 meshes with the first gear 331 or the second gear 421, which can reduce the impact and noise when the gear and the first rack 21 are in transmission, improve the transmission smoothness, and ensure that the lifting process of the upper and lower mold units 4 is precise and controllable. The straight tooth surface 212 abuts against the first locking component 32 or the second locking component, which can increase the contact area between the locking component and the first rack 21, avoid the risk of sliding caused by the tilt of the tooth surface during locking, strengthen the locking effect, and ensure the positional stability in the heating and mold closing processes.

[0065] Preferably, in this embodiment, the first locking component 32 includes a first locking cylinder and a first latch. The first locking cylinder is installed inside the upper mold unit 3, and the first latch is installed at the output end of the first locking cylinder. The first locking cylinder can drive the first latch to extend out of the upper mold unit 3 and abut against the second toothed surface 212 to achieve locking. The first locking cylinder can also drive the first latch to retract. By using the extension and retraction of the latch driven by the first locking cylinder, the locking and unlocking operations of the upper mold unit 3 can be completed quickly and stably. The second toothed surface 212 allows the upper mold unit 3 to achieve the locking function only through the first rack 21, simplifying the structure of the hot melt welding machine and ensuring the reliability of the locked state. In other embodiments, the first locking cylinder can be replaced by a first locking electric cylinder or a first locking hydraulic cylinder.

[0066] Preferably, in this embodiment, the second locking assembly includes a second locking cylinder and a second latch. The second locking cylinder is installed inside the lower mold unit 4, and the second latch is installed at the output end of the second locking cylinder. The second locking cylinder can drive the second latch to extend out of the lower mold unit 4 and abut against the second toothed surface 212 to achieve locking. The second locking cylinder can also drive the second latch to retract. By using the extension and retraction of the latch driven by the second locking cylinder, the locking and unlocking operations of the lower mold unit 4 can be completed quickly and stably. The second toothed surface 212 allows the lower mold unit 4 to achieve the locking function only through the first rack 21, simplifying the structure of the hot melt welding machine and ensuring the reliability of the locked state. In other embodiments, the second locking cylinder can be replaced by a second locking electric cylinder or a second locking hydraulic cylinder.

[0067] Specifically, such as Figures 1-3As shown, in this embodiment, the mold sliding unit 2 further includes a first slide rail 22 and a first slider 23. The first slide rail 22 is installed on the left and right sides of the welding machine frame 11. The first slide rail 22 extends in the vertical direction and is parallel to and spaced apart from the first rack 21. The first slider 23 is connected to the upper mold unit 3 or the lower mold unit 4 respectively. The first slider 23 is also installed on the first slide rail 22 and is slidably connected to the first slide rail 22, providing additional guidance and support for the vertical movement of the upper mold unit 3 and the lower mold unit 4, enhancing the stability and smoothness of their lifting and lowering, avoiding the shaking or deviation that may occur due to relying solely on the meshing of the first rack 21, and ensuring a more precise lifting and lowering process.

[0068] Preferably, such as Figures 1-3 As shown, in this embodiment, two sets of slide rails are provided, with two slide rails in each set. The two slide rails in each set are positioned on both sides of the corresponding first rack 21 along the front-rear direction. The two slide rails in each set are symmetrically spaced along the axis of symmetry of the corresponding first rack 21, forming a surrounding guide and support structure for the first rack 21 from the front-rear direction. This provides more stable guidance for the lifting and lowering of the upper / lower mold unit 4, offsetting any front-rear offset or swaying that may occur during mold unit movement. This significantly improves the stability and accuracy of the lifting process, avoiding gear and rack 21 meshing deviations caused by insufficient guidance on one side or in one direction. It ensures the alignment accuracy of processes such as heating the parts to be connected and mold closing, ultimately improving the quality consistency of hot melt welding and the reliability of equipment operation. In other embodiments, each set of slide rails may have one, three, or four rails, etc.

[0069] Specifically, such as Figure 1 and Figure 2 As shown, in this embodiment, two first gears 331 are provided. The first drive assembly 33 includes a first servo motor 332 and a first reducer 333. The first servo motor 332 is mounted on the upper mold connecting assembly 31, and the first reducer 333 is mounted on and cooperates with the first servo motor 332. The first transmission shaft 334 is mounted on the first reducer 333. The two ends of the first transmission shaft 334 pass through the left and right side walls of the upper mold connecting assembly 31, respectively, and are connected to the first gears 331, so as to realize the stable and precise lifting and lowering of the upper mold unit 3 along the first rack 21. The meshing transmission of the first gear 331 and the first rack 21 ensures the balance and synchronization of the upper mold unit 3 during the lifting process. The first servo motor 332, together with the first reducer 333, can provide a stable and controllable driving force, ensuring that the lifting speed and position are precisely adjustable to meet the precision requirements of different hot melt processes for the mold position. The design of the first drive shaft 334 with the first gear 331 at both ends allows the upper mold connecting component 31 to be evenly stressed on both sides, avoiding deviation or jamming during lifting, improving the stability and reliability of the equipment operation, and thus ensuring the quality of the hot melt connection of the parts to be connected.

[0070] Preferably, such as Figure 1 and Figure 2 As shown, in this embodiment, the first drive assembly 33 further includes a first tensioning mechanism 335. The first tensioning mechanism 335 is installed on the upper mold connecting assembly 31 to adjust the tightness of the transmission components in the first drive assembly 33. The first tensioning mechanism 335 adjusts the meshing clearance between the first gear 331 and the first rack 21, or compensates for the clearance caused by component wear during transmission. This ensures that the first gear 331 and the first rack 21 always maintain a stable and appropriate meshing state, avoiding transmission slippage and decreased position accuracy due to excessively loose meshing, or increased component wear and reduced drive efficiency due to excessively tight meshing. This extends the service life of the relevant components of the first drive assembly 33, reduces the frequency of equipment maintenance, ensures the continuous stability of the lifting action of the upper mold unit 3, and improves the overall operational reliability of the hot melt welding machine and the hot melt quality of the parts to be connected.

[0071] Specifically, such as Figures 1-3 As shown, in this embodiment, two second gears 421 are provided. The second drive assembly 42 includes a second servo motor 422 and a second reducer 423. The second servo motor 422 is mounted on the lower mold connecting assembly 41, and the second reducer 423 is mounted on the second servo motor 422 and cooperates with it. The second transmission shaft 424 is mounted on the second reducer 423. The two ends of the second transmission shaft 424 pass through the left and right side walls of the lower mold connecting assembly 41, respectively, and are connected to the second gears 421, so as to realize the stable and precise lifting and lowering of the lower mold unit 4 along the first rack 21, while simultaneously... The meshing transmission between the double second gears 421 and the first rack 21 ensures the balance and synchronization of the lower mold unit 4 during the lifting process. The second servo motor 422, combined with the second reducer 423, provides a stable and controllable driving force, ensuring that the lifting speed and position are precisely adjustable to meet the precision requirements of different hot-melt processes for mold position. The design of connecting the second gears 421 at both ends of the second drive shaft 424 allows the lower mold connecting component 41 to be evenly stressed on both sides, avoiding deviation or jamming during lifting, improving the stability and reliability of the equipment operation, and thus ensuring the quality of the hot-melt connection of the parts to be connected.

[0072] Preferably, such as Figures 1-3As shown, in this embodiment, the second drive assembly 42 further includes a second tensioning mechanism 425. The second tensioning mechanism 425 is installed on the lower mold connecting assembly 41 to adjust the tightness of the transmission components in the second drive assembly 42. The second tensioning mechanism 425 adjusts the meshing clearance between the second gear 421 and the first rack 21, or compensates for the clearance caused by component wear during transmission. This ensures that the second gear 421 and the first rack 21 always maintain a stable and appropriate meshing state, avoiding transmission slippage and decreased position accuracy due to excessively loose meshing, or increased component wear and reduced drive efficiency due to excessively tight meshing. This extends the service life of the relevant components of the second drive assembly 42, reduces the frequency of equipment maintenance, ensures the continuous stability of the lifting action of the lower mold unit 4, and improves the overall operational reliability of the hot melt welding machine and the hot melt quality of the parts to be connected.

[0073] Specifically, such as Figure 1 and Figure 2 As shown, in this embodiment, the upper mold connecting assembly 31 includes an upper mold bearing frame 311. The upper mold is installed under the upper mold bearing frame 311, and the upper mold bearing frame 311 is installed on the mold sliding unit 2. The upper mold bearing frame 311 can move up and down relative to the welding machine frame 11, providing a stable installation foundation for the upper mold. This ensures that the upper mold can accurately follow the first drive assembly 33 to adjust its position along the first rack 21 to adapt to the heating unit 5 or achieve mold closing. Furthermore, the stable structure of the bearing frame ensures that the upper mold is fixed in position and subjected to uniform force during the heating and pressure bonding process, thereby improving the accuracy and quality of the hot melt connection of the parts to be connected.

[0074] Preferably, such as Figure 1 and Figure 2 As shown, in this embodiment, the upper mold connecting assembly 31 also includes a positioning pin and a clamping cylinder 312. The positioning pin passes through the upper mold and the upper mold support frame 311 in sequence. The clamping cylinder 312 is installed on the upper mold support frame 311. The output end of the clamping cylinder 312 extends downward and bends inward at the end. The output end of the clamping cylinder 312 can reciprocate in the up-down direction. The output end of the clamping cylinder 312 is used to clamp or release the upper mold, realizing convenient assembly and disassembly of the upper mold. By having the positioning pin pass through the upper mold and the upper mold support frame 311 in sequence, the upper mold can be quickly and accurately positioned. Combined with the output end of the clamping cylinder 312, which can reciprocate up and down and bend inward at the end, the upper mold can be quickly clamped or released without additional tools, greatly simplifying the loading and unloading operation and improving efficiency. The positioning method of the positioning pin and the clamping adjustment capability of the clamping cylinder 312 can be combined to adapt to upper molds of different sizes and specifications without replacing the upper mold support frame 311 or making complex structural adjustments, thus expanding the processing range of the hot melt welding machine for different parts to be connected. In other embodiments, the clamping cylinder 312 may also be replaced by a clamping electric cylinder or a clamping hydraulic cylinder, etc.

[0075] Preferably, such as Figure 1 and Figure 2 As shown, in this embodiment, four clamping cylinders 312 are provided on each of the front and rear sides of the upper mold support frame 311. The four clamping cylinders 312 are arranged parallel and equidistantly along the circumference of the upper mold support frame, which can apply clamping force to the installed upper mold from multiple evenly distributed points, so as to avoid the upper mold from shifting or loosening due to uneven force, and ensure that the upper mold always maintains a precise position during heating, mold closing and pressurization processes, thereby improving the consistency and quality of the hot melt connection of the parts to be connected.

[0076] Specifically, such as Figures 1-3 As shown, in this embodiment, the lower mold connecting assembly 41 includes a lower mold support frame 411. The lower mold is mounted on the lower mold support frame 411, and the lower mold support frame 411 is mounted on the mold sliding unit 2. The lower mold support frame 411 can move up and down relative to the welding machine frame 11, enabling the lower mold to be stably installed and move flexibly up and down relative to the welding machine frame 11 with the mold sliding unit 2. This allows for precise adjustment of the relative positions of the lower mold, the heating unit 5, and the upper mold. The lower mold support frame 411 provides a stable installation foundation for the lower mold, ensuring the mold position is stable during the hot melting process and preventing the parts to be connected from shifting and affecting the welding quality.

[0077] Preferably, such as Figures 1-3 As shown, in this embodiment, the upper mold connecting assembly 31 further includes a lifting cylinder 412. The lifting cylinder 412 is installed at the bottom of the lower mold support frame 411. The output end of the lifting cylinder 412 can extend out of the lower mold support frame 411 and can move vertically. The output end of the lifting cylinder 412 can abut against the lower mold, and is used to push out the lower mold, enabling convenient disassembly and assembly of the lower mold without the need for manual prying or disassembly with additional tools. This simplifies the disassembly and assembly process of the lower mold, significantly saving time when changing lower molds of different specifications. The ejection force provided by the lifting cylinder 412 is stable and controllable, avoiding damage to the lower mold or support frame during manual disassembly and assembly, ensuring the integrity of the mold and equipment components, further improving the efficiency and safety of mold replacement in the hot melt welding machine, and adapting to the processing needs of more diverse parts to be connected. In other embodiments, the lifting cylinder 412 can also be replaced by a lifting electric cylinder or a lifting hydraulic cylinder, etc.

[0078] Preferably, such as Figures 1-3As shown, in this embodiment, four lifting cylinders 412 are provided. The four lifting cylinders 412 are arranged in a rectangular symmetrical manner, so that the four lifting cylinders 412 can simultaneously apply a pushing force to the lower mold from the four rectangular corners of the bottom of the lower mold support frame 411, thereby stably completing the ejection action of the lower mold. The rectangular symmetrical arrangement can make the ejection force evenly distributed at the bottom of the mold, avoiding mold tilting, jamming or local damage due to uneven force, and ensuring a smooth and stable disassembly and assembly process.

[0079] Preferably, such as Figures 1-3 As shown, in this embodiment, the upper mold connecting assembly 31 further includes a positioning cylinder 413. The positioning cylinder 413 is mounted on the lower mold support frame 411 and is located at both ends of the lower mold support frame 411. The output end of the positioning cylinder 413 extends in opposite directions to position the lower mold. The left-right opposing positioning method can restrict the displacement of the lower mold in the lateral direction, preventing the mold from shifting due to vibration, pressure, or other factors during the hot melt welding process, thus ensuring the welding accuracy of the parts to be connected. The output end of the positioning cylinder 413 can extend and retract flexibly, which can quickly complete the positioning and fixing of the lower mold, and can also quickly release the positioning when the mold needs to be disassembled, without affecting the mold replacement efficiency. In other embodiments, the positioning cylinder 413 can also be replaced by a positioning electric cylinder or a positioning hydraulic cylinder, etc.

[0080] Preferably, such as Figures 1-3 As shown, in this embodiment, four positioning cylinders 413 are provided. Two positioning cylinders 413 are provided at each of the left and right ends of the lower mold support frame 411. The positioning cylinders 413 on the same side are spaced apart, forming a multi-point and balanced positioning and fixing of the lower mold from the lateral direction. The spaced arrangement of two at each end can form a multi-support point positioning in the lateral direction of the mold. Compared with single-point positioning, it can better limit the lateral displacement and deflection of the mold, and avoid the welding accuracy being affected by the slight displacement of the mold during the hot melting process. The spaced cylinders can be adapted to lower molds of different lengths and specifications, ensuring more comprehensive positioning coverage of the mold. This not only improves the positioning stability, but also enhances the adaptability to the processing of different parts to be connected, and does not interfere with the lifting cylinder 412's disassembly and assembly operation of the mold, thus taking into account both positioning effect and operation convenience.

[0081] Specifically, such as Figure 1 , Figure 4 and Figure 5As shown, in this embodiment, the heating unit 5 includes a heating element 51 and a hot plate sliding assembly 52. ​​The hot plate sliding assembly 52 includes a hot plate slide frame 521, a pair of hot plate guide rails 522 extending in the front-back direction and arranged in parallel and spaced apart, and a pair of mounting grooves 523. The hot plate guide rails 522 are installed on the left and right sides of the welding machine frame 11. The hot plate slide frame 521 is slidably installed on the pair of hot plate guide rails 522. The mounting grooves 523 are installed on the hot plate slide frame 521. The heating element 51 is provided with mounting protrusions in the left and right directions. The mounting protrusions are installed in the mounting grooves 523, which can realize the stable sliding of the heating unit 5 in the front-back direction, thereby accurately entering or exiting the working position between the upper and lower mold units 4. The cooperation between the hot plate guide rails 522 and the hot plate slide frame 521 ensures that the heating element 51 moves smoothly and is accurately positioned, avoiding the heating position deviation from affecting the hot melting effect. The cooperation between the mounting grooves 523 and the mounting protrusions realizes the quick assembly and disassembly of the heating element 51, which is convenient for the maintenance or replacement of the heating element 51 in the future.

[0082] Preferably, such as Figure 1 , Figure 4 and Figure 5 As shown, in this embodiment, the heating unit 5 further includes a hot plate limiting assembly, which includes three limiting cylinders 524. These three limiting cylinders 524 are mounted on the hot plate slide frame 521 and are arranged on the left, right, and rear sides of the heating element 51. The output ends of the limiting cylinders 524 located on the left and right sides move in the front-back direction, while the output end of the limiting cylinder 524 located on the rear side moves in the left-right direction. The limiting cylinders 524 can limit the position of the heating element 51. The limiting cylinder 524, which moves forward, prevents the heating element 51 from shifting in the front-to-back direction. The limiting cylinder 524, which moves laterally in the left-to-right direction, prevents the heating element 51 from swaying in the left-to-right direction. The three cylinders work together to ensure that the heating element 51 remains in the preset working position during the hot-melt process, improving heating uniformity and hot-melt quality. The limiting cylinder 524 has a rapid response, quickly locking the heating element 51 during heating and quickly unlocking it when needed, without affecting the sliding efficiency of the heating unit 5, further ensuring the stability and smoothness of the overall hot-melt welding process. In other embodiments, there may be one, two, or four limiting cylinders 524. In other embodiments, the limiting cylinder 524 may also be replaced by a limiting electric cylinder or a limiting hydraulic cylinder.

[0083] Preferably, such as Figure 1 , Figure 4 and Figure 5As shown, in this embodiment, the heating unit 5 further includes a hot plate driving assembly 53. The hot plate driving assembly 53 includes a second rack 531, a third gear 532, a third servo motor 533, a third transmission shaft 534, and a third reducer 535. Two second racks 531 and two third gears 532 are provided. The two second racks 531 are respectively located at the bottom of the left and right frames of the hot plate slide frame 521. The third servo motor 533 is installed at the bottom of the rear frame of the hot plate slide frame 521. The third reducer 535 is installed on and cooperates with the third servo motor 533. The third transmission shaft 534 is installed on the third reducer 535. Both ends of the third transmission shaft 534 pass through the left and right side walls of the upper mold connecting assembly 31 and are connected to the third gear 532. The third gear 532 meshes with the second rack 531. The symmetrical layout of the double second racks 531 and the double third gears 532 enables the hot plate slide frame 521 to slide stably and accurately along the hot plate guide rail 522, ensuring that the hot plate slide frame 521 is subjected to balanced force on both sides, avoiding deviation or jamming during sliding, and improving the stability of the movement of the heating unit 5. The combination of the third servo motor 533 and the third reducer 535 can achieve precise control of the sliding speed and position of the heating unit 5, meeting the requirements of different hot melting processes for the timing and positioning accuracy of the heating element 51 entering and exiting. The overall drive structure is integrated on the hot plate slide frame 521, with a direct transmission path and low power loss, ensuring the rapid response of the heating unit 5 and improving the automation level and process reliability of the hot melting welding machine operation.

[0084] Preferably, such as Figure 1 , Figure 4 and Figure 5 As shown, in this embodiment, the hot plate drive assembly 53 further includes a third tensioning mechanism 536. The third tensioning mechanism 536 is installed on the hot plate slide frame 521 and adjusts the meshing clearance between the third gear 532 and the second rack 531. The third tensioning mechanism 536 can compensate for the clearance caused by long-term meshing wear of the gear and rack, avoid jamming or positional deviation during transmission, and ensure the stability and accuracy of the transmission of the hot plate drive assembly 53.

[0085] Specifically, such as Figure 1 and Figure 6As shown, in this embodiment, the frame unit 1 also includes a housing 12 and an automatic door 13. The housing 12 covers the welding machine frame 11, and the automatic door 13 can open and close in the vertical direction. The automatic door 13 is installed on the housing 12, which can achieve physical protection and isolation of the internal frame, mold and heating unit 5 of the hot melt welding machine. The housing 12 can isolate the high temperature and mechanical parts exposure risk during equipment operation, and avoid accidental injury to operators. The automatic door 13 can automatically close during core processes such as heating and mold closing, reduce heat loss to ensure stable hot melt temperature, and prevent external dust and impurities from entering the equipment and affecting the hot melt quality of the parts to be connected. It can also be opened and closed conveniently when switching processes without interfering with the normal operation of the equipment. Overall, it improves the operation safety, cleanliness of the working environment and stability of the hot melt welding machine.

[0086] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. Hot-melt welding machine, characterized in that, include: The frame unit (1) includes a welding machine frame (11); The mold sliding unit (2) includes a pair of first racks (21), which extend in the vertical direction and are mounted opposite to each other on the left and right sides of the welding machine frame (11). The upper mold unit (3) includes an upper mold connecting assembly (31), a first locking assembly (32) and a first driving assembly (33). The first driving assembly (33) includes a first gear (331). The first gear (331) is mounted on the left or right outer side wall of the upper mold connecting assembly (31). The first gear (331) meshes with the corresponding first rack (21). The lower mold unit (4) includes a lower mold connecting assembly (41), a second locking assembly and a second driving assembly (42). The second driving assembly (42) includes a second gear (421). The second gear (421) is mounted on the left or right outer side wall of the lower mold connecting assembly (41). The second gear (421) meshes with the corresponding first rack (21). Heating unit (5) is installed on the frame unit (1) and is disposed between the upper mold unit (3) and the lower mold unit (4) for heating the parts to be connected that are housed in the upper mold unit (3) and the lower mold unit (4); The first rack (21) includes a first tooth surface (211) extending vertically and corresponding to the first gear (331) or the second gear (421). The first rack (21) also includes a second tooth surface (212) abutting against the first locking component (32) or the second locking component. The second tooth surface (212) extends vertically. The first tooth surface (211) and the second tooth surface (212) are adjacent to each other and arranged at an angle, so that the upper mold unit (3) and the lower mold unit (4) can achieve their lifting and locking only through the first rack (21).

2. The hot wedge bonding machine according to claim 1, characterized in that, The first locking assembly (32) includes a first locking cylinder and a first latch. The first locking cylinder is installed in the upper mold unit (3), and the first latch is installed at the output end of the first locking cylinder. The first locking cylinder can drive the first latch to extend out of the upper mold unit (3) and abut against the second tooth surface (212) to achieve locking. The first locking cylinder can also drive the first latch to retract. And / or, the second locking assembly includes a second locking cylinder and a second latch. The second locking cylinder is installed in the lower mold unit (4), and the second latch is installed at the output end of the second locking cylinder. The second locking cylinder can drive the second latch to extend out of the lower mold unit (4) and abut against the second tooth surface (212) to achieve locking. The second locking cylinder can also drive the second latch to retract.

3. The hot melt welding machine according to claim 1, characterized in that, The mold sliding unit (2) further includes: The first slide rail (22) is installed on the left and right sides of the welding machine frame (11). The first slide rail (22) extends in the vertical direction and is parallel to and spaced apart from the first rack (21). The first slider (23) is connected to the upper mold unit (3) or the lower mold unit (4) respectively. The first slider (23) is also mounted on the first slide rail (22) and is slidably connected to the first slide rail (22).

4. The hot melt welding machine according to claim 1, characterized in that, Two first gears (331) are provided, and the first drive assembly (33) includes: The first servo motor (332) is mounted on the upper mold connection assembly (31); The first reducer (333) is mounted on and cooperates with the first servo motor (332); The first drive shaft (334) is mounted on the first reducer (333). The two ends of the first drive shaft (334) pass through the left side wall and the right side wall of the upper mold connecting assembly (31) respectively, and are connected to the first gear (331). The first tensioning mechanism (335) is mounted on the upper mold connecting assembly (31).

5. The hot melt welding machine according to claim 1, characterized in that, Two second gears (421) are provided, and the second drive assembly (42) includes: The second servo motor (422) is mounted on the lower mold connecting assembly (41); The second reducer (423) is mounted on and cooperates with the second servo motor (422); The second drive shaft (424) is mounted on the second reducer (423). The two ends of the second drive shaft (424) pass through the left side wall and the right side wall of the lower mold connecting assembly (41) respectively, and are connected to the second gear (421). The second tensioning mechanism (425) is mounted on the lower mold connecting assembly (41).

6. The hot melt welding machine according to any one of claims 1-5, characterized in that, The upper mold connecting assembly (31) includes: The upper mold support frame (311) is installed under the upper mold support frame (311). The upper mold support frame (311) is installed on the mold sliding unit (2). The upper mold support frame (311) can move up and down relative to the welding machine frame (11). Positioning pins pass sequentially through the upper mold and the upper mold support frame (311); A clamping cylinder (312) is installed on the upper mold support frame (311). The output end of the clamping cylinder (312) extends downward and bends inward at the end, and can reciprocate in the up and down direction to clamp or release the upper mold, thereby realizing convenient assembly and disassembly of the upper mold.

7. The hot melt welding machine according to any one of claims 1-5, characterized in that, The lower mold connecting assembly (41) includes: The lower mold support frame (411) is mounted on the lower mold support frame (411). The lower mold support frame (411) is mounted on the mold sliding unit (2). The lower mold support frame (411) can move up and down relative to the welding machine frame (11). A lifting cylinder (412) is installed at the bottom of the lower mold support frame (411). The output end of the lifting cylinder (412) can extend out of the lower mold support frame (411) and can move in the vertical direction. The output end of the lifting cylinder (412) can abut against the lower mold. The lifting cylinder (412) is used to push out the lower mold, so as to realize the convenient disassembly and assembly of the lower mold. A positioning cylinder (413) is installed on the lower mold support frame (411). The positioning cylinder (413) is located at the left and right ends of the lower mold support frame (411). The output end of the positioning cylinder (413) extends in opposite directions and is used to position the lower mold.

8. The hot melt welding machine according to any one of claims 1-5, characterized in that, The heating unit (5) includes: Heating element (51); The hot plate sliding assembly (52) includes a hot plate slide frame (521), a pair of hot plate guide rails (522) extending in the front-back direction and arranged in parallel and spaced apart, and a pair of mounting grooves (523). The hot plate guide rails (522) are installed on the left and right sides of the welding machine frame (11). The hot plate slide frame (521) is slidably installed on the pair of hot plate guide rails (522). The mounting grooves (523) are installed on the hot plate slide frame (521). The heating element (51) is provided with mounting protrusions in the left and right directions respectively. The mounting protrusions are installed in the mounting grooves (523).

9. The hot melt welding machine according to claim 8, characterized in that, The heating unit (5) further includes a hot plate limiting assembly, which also includes a limiting cylinder (524). There are three limiting cylinders (524), which are arranged on the hot plate slide frame (521). The three limiting cylinders (524) are arranged on the left, right and rear sides of the heating element (51). The output end of the limiting cylinder (524) arranged on the left and right sides moves in the front-back direction, and the output end of the limiting cylinder (524) arranged on the rear side moves in the left-right direction. The limiting cylinder (524) can limit the position of the heating element (51).

10. The hot melt welding machine according to any one of claims 1-5, characterized in that, The rack unit (1) also includes: The outer casing (12) is provided to cover the welding machine frame (11); An automatic door (13) is capable of opening and closing in the vertical direction and is mounted on the outer casing (12).

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