A heat-sealing device

Abstract

The present invention discloses a heat sealing device, comprising a mounting plate and a plurality of heat sealing components arranged on the mounting plate, the heat sealing components comprising a heat sealing head for sealing a bottle mouth and a mounting tube sleeved on the upper portion of the heat sealing head, the mounting tube being longitudinally passed through the mounting plate, the mounting tube being provided with a mounting cavity for accommodating the wires of the heat sealing head, the side walls of the mounting tube being provided with threading holes for the wires of the heat sealing head to pass through, the threading holes being located above the mounting plate. By hiding the wires in the mounting tube, the present invention prevents the wires from swaying in the cavity below the mounting plate and affecting the heat sealing of the heat sealing head, and also eliminates the need for separately providing a through hole or other structure on the mounting plate for threading the wires. This greatly reduces the possibility of dust entering the cavity below the mounting plate through gaps in the mounting plate, thereby ensuring the sealing and dustproof effect of the mounting plate on the cavity below the mounting plate.

Description

Technical Field

[0001] The present invention particularly relates to a heat sealing device. Background Art

[0002] At present, the heat sealing device of the filling machine on the market is usually installed on the mounting plate, and the heat sealing head of the heat sealing device extends into the dust-free chamber below the mounting plate to seal the bottle mouth of the packaging bottle. However, a through hole needs to be provided on the mounting plate to allow the wire connected to the side of the heat sealing head to pass from the bottom of the mounting plate to the top of the mounting plate, which makes it easy for dust to enter the dust-free chamber through the gap between the through hole and the wire, resulting in poor dust prevention effect. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a heat sealing device to solve at least one of the above problems.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solution: a heat sealing device, including a mounting plate and multiple heat sealing components arranged on the mounting plate, the heat sealing components including a heat sealing head for sealing the bottle mouth and a mounting tube sleeved on the upper part of the heat sealing head, the mounting tube is longitudinally passed through the mounting plate, and a mounting cavity for accommodating the wires of the heat sealing head is provided in the mounting tube, and a wire threading hole for the wires of the heat sealing head is provided on the side wall of the mounting tube, and the wire threading hole is located above the mounting plate.

[0005] In the above-mentioned heat sealing device, the heat sealing head includes a pressure head and a heating core vertically plugged into the pressure head, and the heating core is coaxially arranged with the central axis of the pressure head.

[0006] In the above heat sealing device, the heat sealing head further comprises a temperature sensor vertically plugged into the pressure head, and a wire at the end of the temperature sensor is located in the installation cavity and passes through the installation cavity through the wire hole.

[0007] In the above-mentioned heat sealing device, the pressure head includes a heat-conducting copper block and a stainless steel sleeve wrapped around the outside of the heat-conducting copper block, and the heating core and the temperature sensor are both inserted into the heat-conducting copper block.

[0008] In the above-mentioned heat sealing device, the heat sealing device also includes a positioning plate located above the mounting plate, and a linear drive mechanism is provided on the positioning plate. The drive rod of the linear drive mechanism is connected to the mounting tube to push the heat sealing assembly up and down and seal the bottle mouth below the mounting plate.

[0009] In the above heat sealing device, a limiting rod is provided on the positioning plate, and the limiting rod is passed through the limiting hole on the top of the mounting tube to limit the mounting tube in the horizontal direction.

[0010] In the above-mentioned heat sealing device, the heat sealing head is slidably connected to the mounting tube, a top plate is provided on the top of the mounting tube, a guide hole is provided on the top plate, a guide rod is provided in the mounting cavity, the bottom of the guide rod is fixed on the heat sealing head, the top of the guide rod is passed through the guide hole and is connected to a limit nut located above the top plate, and the limit nut prevents the heat sealing head from being detached from the mounting tube by abutting against the top plate.

[0011] In the above heat sealing device, the guide rod is provided with an installation step located in the installation cavity, and an elastic reset member is sleeved on the guide rod, and the upper and lower ends of the elastic reset member respectively abut against the bottom surface of the top plate and the top surface of the installation step.

[0012] In the above heat sealing device, the linear drive mechanism is a cylinder.

[0013] In the above heat sealing device, a through hole for passing the mounting tube is provided on the mounting plate, and a sealing member is provided between the inner wall of the through hole and the outer wall of the mounting tube.

[0014] The beneficial effects of the present invention are:

[0015] A heat sealing device includes a mounting plate and multiple heat sealing components mounted on the mounting plate. The heat sealing components include a heat sealing head for sealing the bottle mouth and a mounting tube sleeved on the upper portion of the heat sealing head. The mounting tube extends longitudinally through the mounting plate and has a mounting cavity within the mounting tube for accommodating the heat sealing head's wires. The sidewalls of the mounting tube are provided with threading holes for the heat sealing head's wires to pass through. The threading holes are located above the mounting plate. This technical solution has the following technical effects:

[0016] The present invention achieves this by passing a mounting tube sleeved on the upper portion of the heat sealing head through the mounting plate, so that the heat sealing head is located at the lower portion of the mounting plate, and a cavity for accommodating the wires at the top of the heat sealing head is formed in the mounting tube. The wires pass through the wire-threading holes on the side walls of the mounting tube to the upper portion of the mounting plate, so that the wires on the heat sealing head connected to the lower portion of the mounting plate are hidden in the mounting tube, and pass through the mounting cavity inside the mounting tube to the upper portion of the mounting plate, so that the entire process of the wires being routed from the lower portion of the mounting plate to the upper portion of the mounting plate is completely hidden in the mounting tube, thereby preventing the wires from shaking in the dust-free chamber and affecting the heat sealing of the heat sealing head, and also eliminating the need to separately provide a through-hole or other structure for passing the wires on the mounting plate, thereby greatly reducing the possibility of dust entering the dust-free chamber through the gaps in the mounting plate, and ensuring the sealing and dust-proof effect of the mounting plate on the dust-free chamber below the mounting plate.

[0017] The heat sealing head includes a pressure head and a heating core vertically inserted into the pressure head. The heating core is coaxially arranged with the central axis of the pressure head, that is, the heating core is arranged in the center of the pressure head. When the heating core heats up, the heating rate of each part of the pressure head remains basically consistent, preventing partial encapsulation of the sealing film due to uneven temperature rise at the bottom of the pressure head, ensuring the sealing performance of the heat sealing head for the packaging bottle and preventing leakage of the packaging bottle.

[0018] The heat sealing head also includes a temperature sensor that is vertically plugged into the pressure head. The wire at the end of the temperature sensor is located in the mounting cavity and passes through the wire hole. By plugging the temperature sensor into the pressure head, the temperature sensor can monitor the pressure head temperature in real time, ensuring that the temperature is maintained within a certain range. This prevents the pressure head temperature from being too high, which may damage the sealing film and packaging bottle, and prevents the pressure head temperature from being too low, which may cause the sealing film to fail to seal.

[0019] The pressure head includes a heat-conducting copper block and a stainless steel sleeve wrapped around the outside of the heat-conducting copper block. The heating core and the temperature sensor are both inserted into the heat-conducting copper block. By setting the pressure head to a structure in which the stainless steel sleeve, which is not easy to rust, wraps the heat-conducting copper block with good thermal conductivity, the heat generated by the heating core can be quickly transferred to the stainless steel sleeve through the heat-conducting copper block, and then the stainless steel sleeve seals the bottle mouth of the packaging bottle. While the sealing effect is good, the pressure head is not easy to be damaged and rusted, thereby extending the service life of the pressure head.

[0020] A limit rod is provided on the positioning plate, and the limit rod is passed through the limit hole at the top of the mounting tube to limit the mounting tube in the horizontal direction. By passing the limit rod through the limit hole, the mounting tube is guided to prevent the heat sealing assembly from shaking in the horizontal direction, thereby ensuring the stability of the heat sealing assembly.

[0021] The heat sealing head is slidably connected to the mounting tube. A top plate is located on the top of the mounting tube, which has a guide hole. A guide rod is located within the mounting cavity. The bottom of the guide rod is fixed to the heat sealing head. The top of the guide rod passes through the guide hole and is connected to a stop nut located above the top plate. The stop nut abuts against the top plate to prevent the heat sealing head from disengaging from the mounting tube. The sliding connection between the heat sealing head and the mounting tube allows the heat sealing assembly to have a certain amount of movement margin. Specifically, when the pressure head contacts the bottle mouth, if the linear drive device continues to push the mounting tube downward, the pressure head, which abuts against the bottle, stops moving downward, and only the mounting tube moves downward, preventing the pressure head from further downward movement and damaging the bottle. When the mounting tube moves upward to move away from the bottle, the pressure head slides downward until the bottom of the stop nut abuts against the top plate, preventing the pressure head from disengaging from the mounting tube.

[0022] The guide rod is equipped with a mounting step within the mounting cavity. An elastic return element is sleeved onto the guide rod, with its upper and lower ends respectively abutting the bottom surface of the top plate and the top surface of the mounting step. This arrangement allows the ram to quickly descend as the heat-sealing assembly moves upward, propelled by the elastic return element until the bottom of the limit nut abuts the top plate, accelerating the ram's return.

[0023] The linear drive mechanism is a cylinder. By using the cylinder as the linear drive device, the structure of the linear drive device is simple and compact, and can adapt to various environments and has a wide range of applications.

[0024] A through hole for passing the mounting tube is provided on the mounting plate, and a sealing member is provided between the inner wall of the through hole and the outer wall of the mounting tube to seal the mounting plate and the mounting tube, preventing dust from entering the cavity below the mounting plate through the gap between the inner wall of the through hole and the outer wall of the mounting tube, thereby ensuring a dust-free environment for the packaging bottles.

[0025] The features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0027] Figure 1 A top view of a heat sealing device according to the present invention;

[0028] Figure 2 for Figure 1 A magnified view of part A;

[0029] Figure 3 A cross-sectional view of the heat sealing assembly.

[0030] Reference numerals:

[0031] 100, mounting plate; 110, sealing member;

[0032] 200, heat sealing head; 210, pressure head; 211, heat-conducting copper block; 212, stainless steel sleeve; 220, heating core; 230, temperature sensor; 240, wire; 250, guide rod; 251, mounting step; 252, elastic reset member;

[0033] 300, mounting tube; 310, mounting cavity; 320, threading hole; 330, top plate; 331, limiting hole; 332, guide hole;

[0034] 400, positioning plate; 410, linear drive mechanism; 411, drive rod; 420, limit rod. DETAILED DESCRIPTION

[0035] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more, unless otherwise explicitly specified.

[0038] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0039] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0040] Example:

[0041] A heat sealing device, such as Figures 1 to 3As shown, it includes a shell, a mounting plate 100 and a plurality of heat sealing components. The mounting plate 100 is horizontally arranged in the shell to divide the shell into a dust-free chamber located at the lower part of the mounting plate 100 and a control chamber located at the upper part of the mounting plate 100. A through hole is vertically passed through the mounting plate 100. The heat sealing component includes a heat sealing head 200 for sealing the bottle mouth and a mounting tube 300 sleeved on the upper part of the heat sealing head 200. The mounting tube 300 vertically passes through the through hole so that the heat sealing head 200 is located in the dust-free chamber. The inner wall of the through hole and the mounting tube are connected. A seal 110 is provided between the outer walls of the tube 300 to ensure the seal between the mounting plate 100 and the mounting tube 300. A mounting cavity 310 is provided in the mounting tube 300. A threading hole 320 communicating with the mounting cavity 310 is provided on the side wall of the mounting tube 300. The threading hole 320 is located above the mounting plate 100. One end of the wire 240 of the heat sealing head 200 is connected to the top of the heat sealing head 200, and the other end passes through the mounting cavity 310 and out of the threading hole 320 to the top of the mounting plate 100.

[0042] The present invention hides the wire 240 connected to the heat sealing head 200 at the bottom of the mounting plate 100 in the mounting tube 300, and passes through the mounting cavity 310 inside the mounting tube 300 to the top of the mounting plate 100, so that the entire process of the wire 240 running from the bottom of the mounting plate 100 to the top of the mounting plate 100 is hidden in the mounting tube 300, thereby preventing the wire 240 from shaking in the dust-free chamber and affecting the heat sealing of the heat sealing head 200. There is no need to separately set a through hole or other structure on the mounting plate 100 for passing the wire 240, which greatly reduces the possibility of dust entering the dust-free chamber through the gaps on the mounting plate 100, thereby ensuring the sealing and dust-proof effect of the mounting plate 100 on the dust-free chamber below the mounting plate 100.

[0043] like Figure 3As shown, the heat sealing head 200 in this embodiment includes a pressure head 210, a heating core 220 and a temperature sensor 230. The heating core 220 is vertically plugged into the pressure head 210. The heating core 220 is coaxially arranged with the central axis of the pressure head 210, that is, the heating core 220 is arranged in the center of the pressure head 210. When the heating core 220 generates heat, the heating rate of each part of the pressure head 210 remains basically consistent, preventing the sealing film from being only partially encapsulated due to uneven heating at the bottom of the pressure head 210, thereby ensuring the sealing performance of the heat sealing head 200 for the packaging bottle and preventing leakage of the packaging bottle. The temperature sensor 230 is vertically plugged into the pressure head 210 and is located on one side of the heating core 220. By plugging the temperature sensor 230 into the pressure head 210, the temperature sensor 230 can monitor the temperature of the pressure head 210 in real time, ensuring that the temperature of the pressure head 210 is maintained within a certain range, preventing the pressure head 210 from being too hot and causing damage to the sealing film and the packaging bottle, and also preventing the pressure head 210 from being too cold and causing the sealing film to be unable to be sealed. In order to ensure the sealing of the mounting plate 100, the wire 240 connected to the top of the temperature sensor 230 is also hidden in the mounting cavity 310 and passes through the mounting cavity 310 and the threading hole 320 to the top of the mounting plate 100.

[0044] Preferably, in this embodiment, the pressure head 210 includes a heat-conducting copper block 211 and a stainless steel sleeve 212. The stainless steel sleeve 212 is wrapped around the outside of the heat-conducting copper block 211. The heating core 220 and the temperature sensor 230 are both inserted into the heat-conducting copper block 211. By setting the pressure head 210 to a structure in which the stainless steel sleeve 212, which is not easy to rust, wraps the heat-conducting copper block 211 with good thermal conductivity, the heat generated by the heating core 220 can be quickly transferred to the stainless steel sleeve 212 through the heat-conducting copper block 211, and then the stainless steel sleeve 212 seals the bottle mouth of the packaging bottle. While the sealing effect is good, the pressure head 210 is not easy to be damaged and rusted, thereby extending the service life of the pressure head 210.

[0045] In this embodiment, a top plate 330 is provided on top of the mounting tube 300, integrally formed with the mounting tube 300. The heat sealing device also includes a positioning plate 400 positioned above the mounting plate 100. A linear drive mechanism 410 is fixed to the positioning plate 400. A drive rod 411 of the linear drive mechanism 410 is connected to the top plate 330. The drive rod 411 propels the heat sealing assembly up and down through the top plate 330 to seal the bottle openings beneath the mounting plate 100. To guide the movement of the heat sealing assembly, a limiting hole 331 is provided on the top plate 330, and a limiting rod 420 is provided on the positioning plate 400. The limiting rod 420 extends within the limiting hole 331 to guide the mounting tube 300, preventing horizontal shaking of the heat sealing assembly and ensuring its stability. The linear drive mechanism 410 is preferably a pneumatic cylinder or an electric push rod, which has a simple structure and stable operation.

[0046] In this embodiment, the mounting tube 300 is sleeved onto the heat sealing head 200 and slidably connected thereto. A guide hole 332 is provided on the top plate 330, and a guide rod 250 is provided within the mounting cavity 310. The bottom of the guide rod 250 is fixed to the top of the heat sealing head 200 for interlocking movement therewith. The top of the guide rod 250 is passed through the guide hole 332. A stop nut is mounted on the top of the guide rod 250, located above the top plate 330. The stop nut is interlocked with the guide rod 250 and abuts against the top plate 330 to prevent the heat sealing head 200 from disengaging from the mounting tube 300. A mounting step 251 surrounds the guide rod 250, which is located within the mounting cavity 310. An elastic return member 252 is sleeved on the guide rod 250, with the top of the elastic return member 252 abutting against the top plate 330 and the bottom of the elastic return member 252 abutting against the mounting step 251.

[0047] The steps for sealing the bottle with heat sealing device are as follows:

[0048] When the heat sealing device is aligned with the packaging bottle, the driving rod 411 of the linear driving device pushes the top plate 330 downward, and the top plate 330 drives the mounting tube 300 and the heat sealing head 200 downward together until the bottom surface of the pressure head 210 contacts the heat sealing film at the bottle mouth. The hot bottom of the pressure head 210 heat-seals the peripheral side of the heat sealing film with the bottle mouth, thereby achieving the heat sealing film sealing the packaging bottle. The sliding connection between the heat sealing head 200 and the mounting tube 300 gives the heat sealing assembly a certain amount of movement margin, that is, when the pressure head 210 contacts the bottle mouth, if the linear driving device continues to move downward, the heat sealing assembly will be sealed. When the mounting tube 300 is pushed, the pressing head 210 abutting against the bottle stops moving downward, and only the mounting tube 300 moves downward. While the mounting tube 300 moves downward, the elastic return member 252 is squeezed downward so that the elastic return member 252 presses the pressing head 210 against the bottle mouth of the bottle, preventing the pressing head 210 from continuing to move downward and causing damage to the bottle. When the mounting tube 300 moves upward to move away from the bottle, the pressing head 210 slides down under the push of the elastic return member 252 until the bottom of the limit nut abuts against the top plate 330, thereby preventing the pressing head 210 from disengaging from the mounting tube 300.

[0049] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A heat sealing device comprising a housing, a mounting plate, and a plurality of heat sealing components mounted on the mounting plate, characterized in that: The mounting plate is horizontally arranged in the shell to divide the shell into a dust-free chamber located at the lower part of the mounting plate and a control chamber located at the upper part of the mounting plate. The heat sealing assembly includes a heat sealing head for sealing the bottle mouth and a mounting tube sleeved on the upper part of the heat sealing head. The mounting tube is longitudinally penetrated through the mounting plate so that the heat sealing head is located in the dust-free chamber. The mounting plate is provided with a through hole for penetrating the mounting tube, and a sealing member is provided between the inner wall of the through hole and the outer wall of the mounting tube. The mounting tube is provided with a mounting cavity for accommodating the wire of the heat sealing head, and the side wall of the mounting tube is provided with a threading hole for the wire of the heat sealing head to pass through, and the threading hole is located above the mounting plate. The heat sealing device also includes a positioning plate located above the mounting plate, and a linear drive mechanism is provided on the positioning plate. The driving rod of the linear drive mechanism is connected to the mounting tube to push the heat sealing assembly to move up and down and seal the bottle mouth below the mounting plate, and the heat sealing head is slidably connected to the mounting tube.

2. A heat sealing device according to claim 1, characterized in that: The heat sealing head includes a pressure head and a heating core vertically plugged into the pressure head, and the heating core is coaxially arranged with the central axis of the pressure head.

3. A heat sealing device according to claim 2, characterized in that: The heat sealing head further comprises a temperature sensor vertically plugged into the pressure head, and a wire at an end of the temperature sensor is located in the installation cavity and passes through the wire threading hole to exit the installation cavity.

4. A heat sealing device according to claim 3, characterized in that: The pressure head includes a heat-conducting copper block and a stainless steel sleeve wrapped around the outside of the heat-conducting copper block. The heating core and the temperature sensor are both inserted into the heat-conducting copper block.

5. The heat sealing device according to claim 1, characterized in that: The positioning plate is provided with a limiting rod, and the limiting rod is passed through the limiting hole on the top of the mounting tube to limit the mounting tube in the horizontal direction.

6. The heat sealing device according to claim 1, characterized in that: A top plate is provided on the top of the mounting tube, a guide hole is provided on the top plate, a guide rod is provided in the mounting cavity, the bottom of the guide rod is fixed to the heat sealing head, the top of the guide rod is passed through the guide hole and is connected to a limiting nut located above the top plate, and the limiting nut prevents the heat sealing head from being detached from the mounting tube by abutting against the top plate.

7. A heat sealing device according to claim 6, characterized in that: The guide rod is provided with an installation step located in the installation cavity. The guide rod is sleeved with an elastic reset member. The upper and lower ends of the elastic reset member respectively abut against the bottom surface of the top plate and the top surface of the installation step.

8. The heat sealing device according to claim 1, characterized in that: The linear drive mechanism is a cylinder.

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