Heat sealing device

Abstract

The utility model relates to the technical field of packaging, and provides a heat sealing device. The heat sealing device comprises a bearing mechanism and a sealing mechanism, wherein the bearing mechanism comprises a pressing sleeve; the cup holder assembly comprises a template and a supporting bracket, the template is provided with a positioning hole, the supporting bracket is of an annular structure and is coaxial with the positioning hole, one axial upward end of the supporting bracket is connected to the template, an opening in the other end of the supporting bracket can be expanded or shrunk, and the supporting bracket is used for bearing the cup edge of a cup body to be heat-sealed; the cup holder assembly can move to the position above the bearing mechanism and move in the vertical direction, and the cup body is released into the pressing sleeve. And the heat sealing mechanism is located above the bearing mechanism and comprises a hot pressing piece, the hot pressing piece and the pressing sleeve are correspondingly arranged, and the cup edge of the cup body can be pressed between the pressing sleeve and the hot pressing piece. The heat sealing device is provided. The cup stand assembly of the heat sealing device can be matched with cup bodies of different sizes and specifications, the template and the supporting bracket do not need to be replaced, the dismounting and mounting time of the device is greatly shortened, and the cost and management difficulty of the template are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to packaging technical field especially relates to a heat sealing device. BACKGROUND

[0002] At present in cup food production, usually utilize heat sealing device to press tightly and seal with heat sealing film and cup along, make cup body interior space and outside isolation, guarantee the health quality of product.

[0003] The upper portion of heat sealing device is equipped with heat sealing mechanism, by template support cup body to be heat sealed. After completing food filling, template drives multiple cup bodies to move to the lower portion of heat sealing mechanism, multiple heat sealing heads on heat sealing mechanism move downward and press tightly with template. Heat sealing film and cup along press tightly between heat sealing mechanism and template, the low temperature film of heat sealing film lower layer is melted by high temperature heat sealing head of heat sealing mechanism, promote cup along annular area and the low temperature film of melting to occur adhesion, thereby realize the sealing of multiple cup bodies.

[0004] However, because different sizes of cup type will produce corresponding template, when carrying out heat sealing to different specifications cup body, need to replace the template of corresponding specification. The greater the product quantity, the more templates need to be replaced, and the disassembly and assembly of the template need to consume a lot of time, which affects the production efficiency, and also increases the procurement cost and management difficulty of the template. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of heat sealing device to solve the problem of low production efficiency, high mold cost and big management difficulty caused by the need of different molds in prior art heat sealing device according to the size specification of product.

[0006] The utility model provides a kind of heat sealing device, comprising:

[0007] Support mechanism, comprising press tightly sleeve;

[0008] Cup support assembly, comprising template and support support, the template is equipped with positioning hole, the support support is annular structure and is coaxially arranged with the positioning hole, one end of the support support axially is connected to the template, the opening of other end can expand or shrink, for the cup along of cup body to be heat sealed is supported;The cup support assembly can be moved to the upper portion of the support mechanism, and move along vertical direction, release the cup body to the press tightly sleeve inside;

[0009] Heat sealing mechanism, located the upper portion of the support mechanism, comprising heat pressing piece, the heat pressing piece is correspondingly arranged with the press tightly sleeve, and the cup along of the cup body can be pressed tightly between the press tightly sleeve and the heat pressing piece.

[0010] According to the heat sealing device, the supporting support includes a connecting part and a plurality of elastic fingers, the connecting part is connected to the template, the plurality of elastic fingers are arranged at intervals along the circumference of the connecting part, the elastic fingers are arranged obliquely from one end of the connecting part to the axis of the connecting part, the elastic fingers can be extruded to change the oblique angle, and the end of the elastic fingers away from the connecting part is used for bearing the cup edge of the cup body.

[0011] According to the heat sealing device, the cup support assembly further includes a fixing ring and an adjusting ring, the fixing ring, the adjusting ring and the positioning hole are coaxially arranged, the fixing ring is fixedly connected with the template, the adjusting ring is located on the inner side of the fixing ring, and the connecting part is located between the fixing ring and the adjusting ring.

[0012] The fixing ring is provided with a first annular flange extending to the inner side, the elastic fingers are located between the end of the adjusting ring and the first annular flange, and the position of the adjusting ring in the axial direction relative to the fixing ring is adjustable, so that the elastic fingers are deformed to change the oblique angle.

[0013] According to the heat sealing device, the fixing ring has a first ring body, the first annular flange is protruded on the inner side surface of the first ring body, and an inner chamfer is formed between the first annular flange towards one side of the lower end of the first ring body and the inner side surface of the first ring body.

[0014] According to the heat sealing device, the supporting mechanism further includes a top plate and an elastic piece, the top plate is located in the compression sleeve and is used for bearing the cup body, and the top plate is connected with the bottom of the compression sleeve through the elastic piece, so that the cup edge of the cup body can be separated from the compression sleeve under the action of the elastic piece.

[0015] According to the heat sealing device, the supporting mechanism further includes a driving piece and a supporting beam, a plurality of compression sleeves are installed on the supporting beam, the driving end of the driving piece is connected with the supporting beam, and the supporting beam is driven to move towards the heat pressing piece.

[0016] According to the heat sealing device, the heat sealing mechanism further includes a support and a suspension beam, the suspension beam is installed on the support, a plurality of heat pressing pieces are fixed below the suspension beam, and the template is correspondingly provided with a plurality of positioning holes; the supporting mechanism further includes a supporting beam, and a plurality of compression sleeves are correspondingly installed on the supporting beam.

[0017] The heat sealing device further comprises a plurality of adjusting assemblies, the adjusting assembly comprises a lead screw, a nut and a clamping holder, the lead screw is vertically arranged in the support, the suspension beam is fixed to the lower end of the lead screw, the nut is threadedly connected to the lead screw, and the clamping holder is arranged on the lead screw in an openable and closable manner.

[0018] The heat sealing device further comprises a plurality of adjusting assemblies, the adjusting assembly comprises a lead screw, a nut and a clamping holder, the lead screw is vertically arranged in the support, the suspension beam is fixed to the lower end of the lead screw, the nut is threadedly connected to the lead screw, and the clamping holder is arranged on the lead screw in an openable and closable manner.

[0019] The heat sealing device further comprises a plurality of adjusting assemblies, the adjusting assembly comprises a lead screw, a nut and a clamping holder, the lead screw is vertically arranged in the support, the suspension beam is fixed to the lower end of the lead screw, the nut is threadedly connected to the lead screw, and the clamping holder is arranged on the lead screw in an openable and closable manner.

[0020] The heat sealing device further comprises a plurality of adjusting assemblies, the adjusting assembly comprises a lead screw, a nut and a clamping holder, the lead screw is vertically arranged in the support, the suspension beam is fixed to the lower end of the lead screw, the nut is threadedly connected to the lead screw, and the clamping holder is arranged on the lead screw in an openable and closable manner.

[0021] The heat sealing device further comprises a plurality of adjusting assemblies, the adjusting assembly comprises a lead screw, a nut and a clamping holder, the lead screw is vertically arranged in the support, the suspension beam is fixed to the lower end of the lead screw, the nut is threadedly connected to the lead screw, and the clamping holder is arranged on the lead screw in an openable and closable manner. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0023] Figure 1 It is one of the structure schematic views of the heat sealing device provided by the utility model

[0024] Figure 2 It is the second structure schematic view of the heat sealing device provided by the utility model.

[0025] Figure 3 It is the position relation schematic view of the heat sealing device provided by the utility model.

[0026] Figure 4 is the structural schematic view of the support of the heat sealing device provided by the utility model.

[0027] Figure 5 is the structural schematic view of the holding clamp of the heat sealing device provided by the utility model.

[0028] Reference signs:

[0029] 1, bearing mechanism;11, compression sleeve;12, top plate;13, elastic member;14, positioning column;15, support beam;16, driving member;2, cup holder assembly;21, template;22, support;221, connecting part;222, elastic finger;23, fixed ring;231, first annular flange;232, first ring body;233, inner chamfer;24, adjusting ring;241, second ring body;242, second annular flange;3, heat sealing mechanism;31, hot pressing piece;311, heating seat plate;3111, heating piece;312, pressing block;32, support;321, support column;322, cross beam;33, suspension beam;34, adjusting assembly;341, lead screw;342, nut;343, holding clamp;3430, screw thread;3431, first holding part;3432, second holding part;3433, fixing member;35, air cylinder;4, cup body;41, cup edge;5, heat sealing film. DETAILED DESCRIPTION

[0030] In order that the object, technical scheme and advantages of the utility model are more clear, the technical scheme in the utility model will be clearly and completely described below in combination with the drawings in the utility model. Obviously, the described embodiments are some of the embodiments of the utility model, instead of all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0031] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "first" and "second" are numbered for the purpose of clearly identifying product components and do not represent any substantial difference. The directions of "upper," "lower," "left," and "right" are all based on the directions shown in the accompanying drawings. The terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances. Furthermore, "multiple" means two or more. In the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0032] The following is combined Figures 1-5 This invention describes the heat sealing device.

[0033] like Figure 1 and Figure 2 As shown, the heat-sealing device provided in this embodiment of the present invention includes a support mechanism 1, a cup holder assembly 2, and a heat-sealing mechanism 3. The support mechanism 1 includes a clamping sleeve 11. The cup holder assembly 2 includes a template 21 and a support bracket 22. The template 21 has a positioning hole, and the support bracket 22 has an annular structure and is coaxially arranged with the positioning hole. One axial end of the support bracket 22 is connected to the template 21, and the opening at the other end can be enlarged or reduced to support the rim 41 of the cup body 4 to be heat-sealed. The cup holder assembly 2 can move above the support mechanism 1 and can move vertically to release the cup body 4 into the clamping sleeve 11. The heat-sealing mechanism 3 is located above the support mechanism 1. The heat-sealing mechanism 3 includes a heat-pressing component 31, which is correspondingly arranged with the clamping sleeve 11, and the rim 41 of the cup body 4 can be pressed between the clamping sleeve 11 and the heat-pressing component 31.

[0034] In the heat-sealing device, the supporting mechanism 1 and the heat-sealing mechanism 3 are located at the heat-sealing station. One or more positioning holes are provided on the template 21, and a support 22 for supporting the cup body 4 is provided within each positioning hole. The cup holder assembly 2 is used to move the filled cup body 4 to the heat-sealing station. After the support 22 of the cup holder assembly 2 is aligned vertically with the pressing sleeve 11 of the supporting mechanism 1, the cup body 4 is released into the pressing sleeve 11. Then, through the relative vertical movement of the supporting mechanism 1 and the heat-sealing mechanism 3, the rim 41 of the cup body 4 is pressed between the pressing sleeve 11 and the heat-pressing component 31. The cup body 4 is sealed by the heating of the heat-pressing component 31.

[0035] The template 21 is provided with a plurality of positioning holes, and a corresponding template 21 is provided with a plurality of supporting supports 22, so that the cup support assembly 2 can support a plurality of cup bodies 4 at the same time, and a plurality of cup bodies can be sealed by one heat sealing operation, thereby improving the production efficiency. Optionally, the plurality of positioning holes are arranged in a straight line at intervals. Figure 1 and Figure 2 The template 21 in the above is provided with four positioning holes arranged in a transverse direction, so that one cup support assembly 2 can support four cup bodies at the same time.

[0036] It can be understood that the opening size of the supporting support 22 at the end away from the template 21 can be adjusted according to the size of the cup body 4, so that the cup rim 41 of the cup body 4 can be supported at the end of the supporting support 22 away from the template 21. The compression sleeve 11 is used to accommodate the cup body 4, and the compression sleeve 11 is matched with the size of the cup rim 41 of the cup body 4, and is used to bear the cup body 4 and apply pressure to the cup rim 41 and the heat sealing film 5.

[0037] The heat sealing device provided in the embodiment of the utility model can expand or reduce the supporting support 22 provided on the template 21, the supporting support 22 can support the cup rim of the cup body 4 of different sizes, the cup support assembly 2 can be matched with the cup body 4 of different sizes, and the universality of the cup support assembly 2 is improved. When sealing the cup body 4 of different sizes, the template 21 and the supporting support 22 do not need to be replaced, and only the compression sleeve 11 on the supporting mechanism 1 needs to be replaced, so that the disassembly and assembly time of the device is greatly shortened, the production efficiency is improved, and the cost and management difficulty of the template 21 are reduced.

[0038] As shown in Figure 4 In the embodiment of the utility model, the supporting support 22 comprises a connecting portion 221 and a plurality of elastic fingers 222. The connecting portion 221 is connected to the template 21, and the plurality of elastic fingers 222 are arranged at intervals along the circumference of the connecting portion 221. The elastic finger 222 is arranged obliquely from one end of the connecting portion 221 to the axis of the connecting portion 221, and the elastic finger 222 can be extruded to change the oblique angle. The end of the elastic finger 222 away from the connecting portion 221 is used to bear the cup rim 41 of the cup body 4.

[0039] The elastic finger 222 is a hard structure member with a certain elasticity, which has the ability of elastic deformation and elastic recovery, and can bear the cup body 4. Optionally, the elastic finger 222 and the connecting portion 221 are integrally formed. The elastic finger 222 is a sheet structure, and the plurality of elastic fingers 222 are arranged to form a polygonal ring, thereby supporting and positioning the cup body 4.

[0040] When the elastic fingers 222 are pressed by an external force from the inner side, the inclination angle of the elastic fingers 222 relative to the axis of the connecting portion 221 will increase, so that the end of the elastic fingers 222 away from the connecting portion 221 moves radially to the inner side, thereby reducing the opening of the support 22. In this case, the elastic fingers 222 can be pressed by an external force from the inner side by means of other adjusting members. When the external force disappears, the elastic fingers 222 automatically return to the natural state of the original inclination angle.

[0041] When the elastic fingers 222 are pressed by an external force from the outer side, the inclination angle of the elastic fingers 222 relative to the axis of the connecting portion 221 will decrease, so that the end of the elastic fingers 222 away from the connecting portion 221 moves radially to the outer side, thereby expanding the opening of the support 22. In this case, the elastic fingers 222 can be pressed by an external force from the outer side by means of other adjusting members. Alternatively, the elastic fingers 222 can expand the opening by means of the cup body 4 itself. Since the size of the upper end of some cup bodies 4 is larger than that of the lower end, as long as the size of the opening formed by the plurality of elastic fingers 222 in the natural state is appropriate, the cup bodies 4 of various sizes can be adapted without the aid of other adjusting members, and at this time the external force acting on the elastic fingers 222 is the external force from the outer side of the cup body 4 itself. When the external force disappears, the elastic fingers 222 automatically return to the natural state of the original inclination angle.

[0042] As shown in Figure 3 In the embodiment of the utility model, the cup holder assembly 2 further comprises a fixing ring 23 and an adjusting ring 24. The fixing ring 23, the adjusting ring 24 and the positioning hole are coaxially arranged. The fixing ring 23 and the adjusting ring 24 cooperate to form the adjusting member described in the above embodiment. The fixing ring 23 is fixedly connected with the template 21, the adjusting ring 24 is located on the inner side of the fixing ring 23, and the connecting portion 221 is located between the fixing ring 23 and the adjusting ring 24. The fixing ring 23 is provided with a first annular flange 231 extending to the inner side, and the elastic finger 222 is located between the end of the adjusting ring 24 and the first annular flange 231. The position of the adjusting ring 24 in the axial direction relative to the fixing ring 23 is adjustable, so that the elastic finger 222 is deformed to change the inclination angle.

[0043] Specifically, the fixing ring 23 has a first ring body 232, and the first annular flange 231 is protruded on the inner side of the first ring body 232. The first ring body 232 is a cylindrical structure, and is fixedly connected with the hole wall of the positioning hole. Optionally, the first annular flange 231 is located at the upper end of the first ring body 232. The first annular flange 231 and the first ring body 232 are integrally formed.

[0044] The adjusting ring 24 has a second ring body 241 and a second annular flange 242, the second ring body 241 is a cylindrical structure, which is spaced apart from the first ring body 232. The second annular flange 242 is protruded on the outer side of the second ring body 241 and is located at the lower end of the second ring body 241. The outer edge of the second annular flange 242 is in sliding connection with the first ring body 232. The second annular flange 242 and the second ring body 241 are integrally formed.

[0045] The connecting part 221 is located between the first ring body 232 and the second ring body 241 and is carried on the second annular flange 242. The top end of the first ring body 232 is located below the first annular flange 231 and is arranged staggered with the first annular flange 231, and a pressing space is formed between the top end of the first ring body 232 and the first annular flange 231, and the elastic fingers 222 are located in the pressing space.

[0046] When the adjusting ring 24 moves upward relative to the fixed ring 23, the elastic fingers 222 are pressed by the top end of the adjusting ring 24 and the first annular flange 231, so that the inclination angle of the elastic fingers 222 directed to the axis of the connecting part 221 is increased, thereby reducing the opening size of the support holder 22. When the adjusting ring 24 moves downward relative to the fixed ring 23, the elastic fingers 222 restore to the natural state.

[0047] Optionally, an inner chamfer 233 is formed between the side of the first annular flange 231 towards the lower end of the first ring body 232 and the inner wall of the first ring body 232. In this way, fine adjustment of the opening size of the support holder 22 can be achieved.

[0048] In the embodiment of the utility model, the cup holder assembly 2 further comprises a positioning piece (not shown in the figure). One of the fixed ring 23 and the adjusting ring 24 is provided with a plurality of first mounting holes in the axial direction, and the other is provided with a second mounting hole. The fixed ring 23 is installed on the adjusting ring through the positioning piece penetrating any first mounting hole and second mounting hole.

[0049] Specifically, a plurality of first mounting holes are arranged in the axial direction and spaced apart on the fixed ring 23, and the adjusting ring 24 is provided with a second mounting hole. Alternatively, a plurality of first mounting holes are arranged in the axial direction and spaced apart on the adjusting ring 24, and the fixed ring 23 is provided with a second mounting hole. By adjusting the relative positions of different first mounting holes and second mounting holes, and then fixing the fixed ring 23 and the adjusting ring 24 through the positioning piece, the adjustment of the position of the adjusting ring 24 relative to the fixed ring 23 in the axial direction is realized, and the adjustment of the opening size of the support holder 22 is realized.

[0050] In the embodiment of the utility model, the supporting mechanism 1 further comprises a top plate 12 and an elastic piece 13. The top plate 12 is located in the compression sleeve 11 and is used for bearing the cup body 4. The top plate 12 is connected with the bottom of the compression sleeve 11 through the elastic piece 13, so that the cup along 41 of the cup body 4 can be separated from the compression sleeve 11 under the action of the elastic piece 13. The elastic piece 13 can be a spring or a spring sheet.

[0051] When the cup holder assembly 2 releases the cup body 4 into the compression sleeve 11, due to the presence of the elastic member 13, the cup edge 41 of the cup body 4 is not in contact with the compression sleeve 11, but there is a certain gap, see Figure 1 When the compression sleeve 11 and the hot pressing piece 31 are close, the elastic force of the elastic member 13 is overcome, so that the cup edge 41 of the cup body 4 is pressed between the compression sleeve 11 and the hot pressing piece 31, see Figure 2 .

[0052] After heat sealing, the compression sleeve 11 and the hot pressing piece 31 are separated, and the cup edge 41 of the cup body 4 is separated from the compression sleeve 11 under the action of the elastic member 13, so that the cup body 4 and the compression sleeve 11 are prevented from being locked. After heat sealing, the cup holder assembly 2 needs to be moved upward to support the cup body 4 again and move away the cup body. In the embodiment, the elastic member 13 separates the cup edge 41 and the compression sleeve 11, so that the support 22 can smoothly support the cup edge 41 when moving upward. In the embodiment, the width of the top end of the compression sleeve 11 can be greater than or equal to the width of the cup edge 41, which is beneficial to increase the heat sealing area of the heat sealing film 5 and the cup edge 41 and improve the sealing effect.

[0053] Specifically, the bottom of the compression sleeve 11 is provided with a positioning column 14. The elastic member 13 is a spring, and a part of the spring is sleeved on the positioning column 14. The lower end of the spring is fixedly connected with the positioning column 14, and the upper end is fixedly connected with the top plate 12.

[0054] Further, the supporting mechanism 1 further comprises a support beam 15, and the compression sleeve 11 is installed on the support beam 15. A plurality of compression sleeves 11 can be installed on the support beam 15, corresponding to the plurality of supports 22 on the cup holder assembly 2. Optionally, a plurality of positioning columns 14 are fixed on the support beam 15, and the compression sleeve 11 is sleeved on the positioning column 14, so as to realize the installation and positioning of the compression sleeve 11, and the compression sleeve 11 can be conveniently installed and dismounted.

[0055] In the embodiment of the utility model, the supporting mechanism 1 further comprises a driving member 16, and the driving end of the driving member 16 is connected with the compression sleeve 11 and is used for driving the compression sleeve 11 to move towards the hot pressing piece 31. Wherein, the driving member 16 can be a linear cylinder or a hydraulic cylinder or other linear driving member. Specifically, a plurality of compression sleeves 11 are installed on the support beam 15, and the driving end of the driving member 16 is connected with the support beam 15 and is used for driving the support beam 15 to move towards the hot pressing piece 31. The plurality of compression sleeves 11 on the support beam 15 are driven to move upward by the driving member 16 and cooperate with the plurality of hot pressing pieces 31, so as to realize the sealing of the plurality of cup bodies 4.

[0056] In the traditional sealing device, multiple hot pressing pieces 31 are respectively moved downward under the guiding action of the guiding positioning structure and tightly press against the mold plate to realize hot pressing sealing of multiple cup bodies. Since the mold plate is a thin plate, it is easy to deform, and the guiding positioning structure can cause gap deviation of the hot sealing area, thereby causing incomplete and not tight sealing.

[0057] In the embodiment of the utility model, the hot pressing piece 31 remains stationary, the support beam 15 is driven to move upward by the driving piece 16, multiple pressing sleeves 11 are driven to correspondingly cooperate with multiple hot pressing pieces 31 to realize hot pressing sealing of multiple cup bodies 4, the problem of uneven sealing surface caused by deformation of the mold plate 21 can be avoided, since the guiding positioning structure is not needed, the problem of gap deviation caused by the guiding positioning structure can also be avoided, thereby improving the completeness and tightness of hot sealing.

[0058] In the embodiment of the utility model, the hot sealing mechanism 3 further comprises a bracket 32 and a suspension beam 33. The suspension beam 33 is installed on the bracket 32, and multiple hot pressing pieces 31 are fixed below the suspension beam 33. The mold plate 21 is correspondingly provided with multiple positioning holes. The supporting mechanism 1 further comprises a support beam 15, and multiple pressing sleeves 11 are correspondingly installed on the support beam 15.

[0059] The suspension beam 33 can be installed on the bracket 32 by a linear driving piece such as a pneumatic cylinder 35 or a hydraulic cylinder to adjust the height of the suspension beam 33 in the vertical direction. When the pressing sleeve 11 needs to be replaced, the suspension beam 33 can be moved upward by the driving piece to facilitate replacement operation.

[0060] Specifically, the bracket 32 comprises two support columns 321 and a cross beam 322, the two support columns 321 are separately arranged on both sides of the supporting mechanism 1, the cross beam 322 is connected between the two support columns 321 and located above the supporting mechanism 1, and the suspension beam 33 is installed below the cross beam 322. Multiple hot pressing pieces 31 are fixed below the suspension beam 33, and the multiple hot pressing pieces 31 are integrated into a whole structure.

[0061] Optionally, the support column 321 is provided with an external thread and two nuts are threadedly connected, the support column 321 is arranged through the cross beam 322, and the two nuts are separately arranged on both sides of the cross beam 322 to clamp the cross beam 322. In this way, detachable connection of the cross beam 322 and the support column 321 is realized, and the height and levelness of the cross beam 322 can be adjusted by the nuts.

[0062] In some optional embodiments, the suspension beam 33 is stationary, and the support beam 15 is driven upward by the driving piece to seal, that is, the hot pressing sealing is realized by moving the pressing sleeve 11 to the hot pressing piece 31.

[0063] In the embodiment of the utility model, hot pressing piece 31 includes heating seat plate 311, pressing block 312 and connecting column (not shown in the drawing). Heating seat plate 311 is internally provided with heating element 3111. Heating seat plate 311 is arranged in interval with suspension beam 33, and heating seat plate 311 is fixedly connected with suspension beam 33 through connecting column. Pressing block 312 is installed on the lower surface of heating seat plate 311 and is in heat conduction connection with heating seat plate 311.

[0064] Among them, heating element 3111 can be electric heating pipe embedded in the inside of heating seat plate 311. The cross-sectional dimension of connecting column is much smaller than the dimension of the side of heating seat plate 311 towards suspension beam 33, heating seat plate 311 is fixed with suspension beam 33 through connecting column, and a certain interval is kept between heating seat plate 311 and suspension beam 33, which can prevent the temperature of heating seat plate 311 from transmitting upwards. The temperature of heating seat plate 311 is transmitted to pressing block 312 below, so that the temperature is uniformly distributed in pressing block 312.

[0065] Optionally, pressing block 312 is detachably installed on heating seat plate 311, for example, pressing block 312 and heating seat plate 311 are fixed through countersunk head bolt. Different sizes of pressing block 312 can be replaced to adapt to cup body 4 of different sizes.

[0066] As shown in Figure 1 Or Figure 2 As shown in the optional embodiment, heat sealing mechanism 3 further includes a plurality of adjusting assemblies 34. Adjusting assembly 34 includes screw rod 341, nut 342 and clamping 343. Screw rod 341 is vertically penetrated in support 32, and suspension beam 33 is fixed to the lower end of screw rod 341. Nut 342 is threadedly connected to screw rod 341, and clamping 343 is clamped on screw rod 341 in an openable and closable manner. Support 32 is limited between nut 342 and clamping.

[0067] Specifically, screw rod 341 is vertically penetrated in cross beam 322 of support 32. Nut 342 is located above cross beam 322, and clamping 343 is located below cross beam 322, and cross beam 322 is clamped between nut 342 and clamping 343. Nut 342 limits the downward movement of screw rod 341 relative to cross beam 322, and clamping 343 limits the upward movement of screw rod 341 relative to cross beam 322, and through the bidirectional limiting of nut 342 and clamping 343, the reliable fixation of suspension beam 33 and support 32 is realized.

[0068] The suspension beam 33 is connected to the cross beam 322 through the lead screw 341 of the plurality of adjusting assemblies 34. The levelness of the suspension beam 33 can be adjusted by adjusting the positions of the nuts 342 and the clamps 343 on the lead screw 341 of the plurality of adjusting assemblies 34, so as to adjust the levelness of the plurality of hot pressing pieces 31. During the adjustment, the clamps 343 are opened to release the limit, then the nuts 342 are adjusted by the knobs, and the clamps 343 are closed to complete the fixation after the adjustment is completed. The openable and closable design of the clamps 343 facilitates the adjustment of the levelness.

[0069] Further, as shown in the drawings, Figure 5 The clamps 343 include first clamping portions 3431, second clamping portions 3432 and fixing members 3433. The first clamping portions 3431 and the second clamping portions 3432 are clamped on both sides of the lead screw 341 and locked through the fixing members 3433. The inner sides of the first clamping portions 3431 and the second clamping portions 3432 are provided with threads 3430 matched with the external threads of the lead screw 341.

[0070] Specifically, one end of the first clamping portion 3431 is rotationally connected with one end of the second clamping portion 3432, and the fixing member 3433 is arranged through the other end of the first clamping portion 3431 and the other end of the second clamping portion 3432 and fixes the two ends. The threads of the first clamping portion 3431 and the threads of the second clamping portion 3432 are matched with the external threads of the lead screw 341 to realize the axial fixation of the clamps 343 and the lead screw 341.

[0071] The steps of heat sealing by using the heat sealing device provided in the embodiment of the present application are as follows:

[0072] Step S1, placing the cup body 4 to be heat sealed on the cup holder assembly 2, supporting the cup rim 41 of the cup body 4 on the support 22, and covering the heat sealing film 5 on the cup body 4 after the cup body 4 is filled.

[0073] Step S2, controlling the pressing sleeve 11 to move downward to the first position, controlling the cup holder assembly 2 to move to the upper side of the supporting mechanism 1, and then controlling the pressing sleeve 11 to move upward, so that the cup body 4 is loaded in the pressing sleeve 11.

[0074] Step S3, controlling the pressing sleeve 11 to move upward to the second position, so that the cup rim 41 of the cup body 4 and the heat sealing film 5 are pressed between the pressing sleeve 11 and the hot pressing piece 31.

[0075] Step S4, controlling the pressing sleeve 11 to move downward, so that the cup rim 41 of the cup body 4 is supported on the support 22 again.

[0076] After the cup 4 is filled, the pressing sleeve 11 is controlled to move down to the first position while the cup holder assembly 2 moves to the supporting mechanism 1. Specifically, the support beam 15 is driven to move down by the driving member 16, and the pressing sleeve 11 is switched to the first position to avoid the cup holder assembly 2 moving in translation. After the cup holder assembly 2 moves to the top of the supporting mechanism 1, the supporting mechanism 1 moves upward again. See Figure 1 After moving upward to a certain height, the pressing sleeve 11 penetrates the support bracket 22, the support bracket 22 is located outside the pressing sleeve 11 and expands with it, the cup 4 is separated from the cup holder assembly 2 and is received by the pressing sleeve 11.

[0077] The pressing sleeve is continuously controlled to move upward to the second position, so that the cup rim 41 of the cup 4 and the heat-seal film 5 are pressed between the pressing sleeve 11 and the heat press member 31. Under the high-temperature heating action of the heat press member 31, the heat-seal film 5 is heat-sealed and connected with the cup 4.

[0078] After the heat sealing is completed, the support beam 15 is driven to move down by the driving member 16, and the pressing force of the pressing sleeve 11 and the heat press member 31 is released. After moving to a certain position, the pressing sleeve 11 is out of the support bracket 22, and the outwardly expanded part of the support bracket 22 is deformed and reset, and the cup rim 41 of the cup 4 is received by the support bracket 22 again. Then the cup holder assembly 2 can continue to move to move away the cup 4 with the completed packaging.

[0079] Before step S1, it also includes confirming whether the specification of the pressing sleeve 11 on the supporting mechanism 1 is consistent with the specification of the cup 4 with the packaging, and if not, the appropriate pressing sleeve 11 needs to be replaced.

[0080] Before step S1, it also includes confirming whether the opening size of the support bracket 22 is suitable for the cup 4 with the packaging, and if not, the opening size of the support bracket 22 needs to be adjusted. Specifically, by adjusting the position of the adjusting ring 24 relative to the fixed ring 23 in the axial direction to adjust the inclination angle of the elastic finger 222 relative to the axis of the connecting part 221, the opening size of the support bracket 22 is adjusted to adapt the support bracket 22 to the cup rim 41 of the cup 4 with the packaging.

[0081] Before step S1, it also includes confirming whether the level of the suspension beam 33 meets the heat sealing requirement, and if not, the level thereof is adjusted by the adjusting assembly 34, so that reliable pressing can be achieved between the plurality of heat press members 31 and the plurality of pressing sleeves 11, and the integrity and tightness of each cup 4 are ensured.

[0082] Finally, it should be noted that: the above examples are used to illustrate the technical solutions of the present application, but not limited to; although the present application is described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still be modified to the technical solutions recorded in the foregoing examples, or part of the technical features are replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A heat sealing device, characterized in that, The application relates to a cup supporting mechanism and a heat sealing mechanism. The cup supporting mechanism comprises a pressing sleeve. The cup supporting assembly comprises a template provided with positioning holes and a support ring arranged coaxially with the positioning holes, the support ring is connected to the template at one end in the axial direction, and the other end is provided with an opening capable of being expanded or shrunk to support the cup rim of a cup to be heat sealed; the cup supporting assembly can be moved above the cup supporting mechanism and in the vertical direction to release the cup into the pressing sleeve; the support ring comprises a connecting part connected to the template and a plurality of elastic fingers arranged at intervals in the circumferential direction of the connecting part, the elastic fingers are arranged obliquely from one end of the connecting part towards the center of the connecting part, the elastic fingers can be pressed to change the oblique angle, and the end of the elastic fingers away from the connecting part is used for supporting the cup rim of the cup. The heat sealing mechanism is arranged above the cup supporting mechanism and comprises a hot pressing part corresponding to the pressing sleeve, and the cup rim of the cup can be pressed between the pressing sleeve and the hot pressing part.

2. The heat sealing device of claim 1, wherein The cup supporting assembly further comprises a fixing ring and an adjusting ring arranged coaxially with the positioning holes, the fixing ring is fixedly connected to the template, and the adjusting ring is located on the inner side of the fixing ring; the connecting part is located between the fixing ring and the adjusting ring. The fixing ring is provided with a first annular flange extending inwardly, the elastic fingers are located between the end of the adjusting ring and the first annular flange, and the position of the adjusting ring in the axial direction relative to the fixing ring can be adjusted to deform the elastic fingers to change the oblique angle.

3. The heat sealing device of claim 2, wherein, The fixing ring has a first ring body, the first annular flange is protruded from the inner side of the first ring body, and an inner chamfer is formed between the first annular flange and the inner side of the first ring body towards the side of the lower end of the first ring body.

4. The heat sealing apparatus of claim 1, wherein The cup supporting mechanism further comprises a top plate located in the pressing sleeve and used for supporting the cup, and an elastic part connecting the top plate with the bottom of the pressing sleeve, so that the cup rim of the cup can be separated from the pressing sleeve under the action of the elastic part.

5. The heat sealing apparatus of claim 1, wherein The cup supporting mechanism further comprises a driving part and a support beam, the support beam is provided with a plurality of pressing sleeves, and the driving end of the driving part is connected with the support beam to drive the support beam to move towards the hot pressing part.

6. The heat sealing apparatus of claim 1, wherein The heat sealing mechanism further comprises a support frame and a suspension beam, the suspension beam is installed on the support frame, a plurality of hot pressing parts are fixed below the suspension beam, and the template is provided with a plurality of positioning holes.

7. The heat sealing apparatus of claim 6, wherein The heat sealing mechanism further comprises a plurality of adjusting assemblies, each adjusting assembly comprises a lead screw, a nut and a clamping part, the lead screw is vertically arranged in the support frame, the suspension beam is fixed to the lower end of the lead screw, the nut is threadedly connected to the lead screw, and the clamping part is clamped on the lead screw in an openable and closable manner, and the support frame is limited between the nut and the clamping part.

8. The heat sealing apparatus of claim 7, wherein The holding clamp comprises a first holding part, a second holding part and a fixing part, the first holding part and the second holding part hold two sides of the lead screw and are locked by the fixing part, inner sides of the first holding part and the second holding part are provided with threads matched with external threads of the lead screw.

9. The heat sealing apparatus of claim 6, wherein, The hot-pressing part comprises: A heating seat plate, a pressing block and a connecting column, the heating seat plate is internally provided with a heating part, the heating seat plate is spaced apart from the suspension beam, the heating seat plate is fixedly connected with the suspension beam through the connecting column, and the pressing block is installed on a lower surface of the heating seat plate and is in heat conduction connection with the heating seat plate.

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