Preheating sealing device for multi-lane packaging machines

Abstract

The present invention discloses a preheating and sealing device for a multi-row packaging machine, comprising a longitudinal sealing support mechanism, a longitudinal sealing forming mechanism, a remote longitudinal sealing mechanism, a longitudinal sealing edge guiding mechanism, a film guide roller mechanism, a longitudinal sealing preheating mechanism, a longitudinal sealing opening and closing mechanism, and a longitudinal sealing mechanism, wherein the longitudinal sealing support mechanism fixes the entire device on the packaging machine. In the present invention, heating and sealing are shared in mutually independent mechanisms, and the sealing temperature and sealing pressure can be independently controlled, and the installation and debugging process are convenient. In the present invention, a pressure roller type rolling sealing method is used, and there is no overlap or reciprocating phenomenon during the rolling process, and the bag making efficiency is improved while ensuring the packaging effect. In the preheating mechanism, the packaging film is uniformly passed through the gap between the two sealing blocks without substantial contact, avoiding the impact change of the alternating pressure on the heating mold sealing block, realizing continuous heating and rolling film pressing, and realizing continuous film walking to ensure the packaging quality without considering the bag length limit, thereby improving production efficiency.

Description

Technical Field

[0001] The present invention relates to a packaging machine, and more particularly to a preheating and sealing device for a multi-row packaging machine in a production equipment for bagged food or medicine packaging machinery. Background Art

[0002] In the existing packaging production machinery and equipment, the longitudinal sealing method of the multi-row packaging machine during bagging adopts the intermittent pressing working mode. The heated longitudinal sealing block presses the longitudinal sealing edge of the packaging film on the front block of the mold of the bag former. In the actual production process, according to the different materials of the packaging bag film itself, a certain clamping time is required. In order to make the packaging bag seal tightly and beautifully, it is necessary to increase the packaging pressure and ensure the clamping time and heating temperature. When the liquid product film itself has a certain thickness or special material, in order to ensure sufficient sealing conditions, the time consumption of the action of each mechanism during operation can only be sacrificed, and the production speed of the multi-row packaging machine will be greatly reduced. At the same time, due to structural limitations, this sealing device must ensure the contact surface processing accuracy, surface finish and matching accuracy of the parts during sealing, otherwise the sealing effect is difficult to ensure, resulting in high manufacturing costs of parts. Due to this sealing method of pressing and sealing, in order to meet the requirements of different bag lengths, the length of the sealing block and the mold block is greater than the maximum bag length, and repeated pressing and ironing will inevitably occur during sealing, so it is difficult to achieve seamless connection of the longitudinal edge sealing pattern, and only flat packaging can be done. In addition, the packaging machines currently on the market all use a single-channel horizontal sealing mechanism that moves up and down to pull the film for intermittent sealing. The intermittent longitudinal sealing method that matches it cannot be applied to the continuous sealing production mode and cannot meet the requirements of high speed, high quality and long-term stability of packaging equipment. Summary of the invention

[0003] In response to the above-mentioned prior art, the present invention provides a preheating and sealing device for a multi-row packaging machine, which has a reasonable structure, high cost performance, and is easy to install and adjust. The device is suitable for a continuous sealing production mode and can meet the requirements of high speed, high quality, and long-term stability of packaging equipment.

[0004] In order to solve the above technical problems, the present invention proposes a preheating and sealing device for a multi-row packaging machine, comprising a longitudinal sealing support mechanism, a longitudinal sealing forming mechanism, a remote longitudinal sealing mechanism, a longitudinal edge sealing guide mechanism, a film guide roller mechanism, a longitudinal sealing preheating mechanism, a longitudinal sealing opening and closing mechanism, and a longitudinal sealing mechanism. The structures and relative positional relationships of the above mechanisms are as follows:

[0005] The longitudinal sealing support mechanism comprises a longitudinal sealing back plate, a pair of left guide blocks are fixed to the front and rear surfaces of the left end of the longitudinal sealing back plate, two linear bearings A are provided through the longitudinal sealing back plate and the left guide block, a pair of right guide blocks are fixed to the front and rear surfaces of the right end of the longitudinal sealing back plate, three linear bearings B are provided through the longitudinal sealing back plate and the right guide block, the bottoms of the left guide blocks and the right guide blocks are flush with the bottom surface of the longitudinal sealing back plate, and a longitudinal sealing support seat is respectively fixed to the bottom surfaces of the two ends of the longitudinal sealing back plate;

[0006] The longitudinal sealing forming mechanism comprises an intermediate connecting and fixing plate fixed in front of the longitudinal sealing back plate, a packaging film inlet plate is fixed on the upper surface of the intermediate connecting and fixing plate, the packaging film inlet plate is provided with N grooves with openings facing forward, the upper front portion of the packaging film inlet plate is designed as an inclined surface intersecting with the grooves, and the upper portion of the grooves is the packaging film inlet; N formers are arranged in front of the intermediate connecting and fixing plate, the formers comprise a former front block and a former rear block, longitudinal semicircular grooves are formed on the longitudinal surfaces opposite to the former rear block, the former front block and the former rear block are assembled in pairs according to the longitudinal semicircular grooves to form a longitudinally through cylindrical channel; the cylindrical channels of the N formers are located at the positions of the N grooves on the packaging film inlet plate After one-by-one alignment, a feed tube is inserted therein, the outer diameter of which is smaller than the inner diameter of the cylindrical channel in which it is located, so that an annular gap for the packaging film to pass through is formed between the feed tube and the cylindrical channel; a narrow groove A is provided at the bottom of the semicircular groove of the former front block, and the back sealing edge of the packaging film is used to protrude from the narrow groove A, and the two back sealing edges are aligned and close together; a film receiving frame plate is provided on the packaging film inlet plate and in front of the bottom of the groove, and film receiving brackets are installed at both ends of the film receiving frame plate, and the film receiving bracket is fixedly connected to the front of the longitudinal back sealing plate, and the film receiving frame plate is provided with N film receiving sheets corresponding to the positions of the N grooves, and a narrow groove B is provided behind the film receiving sheet, and the opening direction of the narrow groove B is consistent with the tangent normal direction of the feed tube;

[0007] The remote longitudinal sealing mechanism includes two longitudinal sealing guide shafts A arranged on two linear bearings A in the longitudinal sealing support mechanism and three longitudinal sealing guide shafts B arranged on three linear bearings B in the longitudinal sealing support mechanism, a remote longitudinal left connecting plate is fixed to the shaft head at the rear end of the two longitudinal sealing guide shafts A, a rotating arm fixing block is fixed to the shaft head at the front end of the three longitudinal sealing guide shafts B, and a longitudinal edge sealing rotating shaft is installed on the rotating arm fixing block; a remote longitudinal right connecting plate is fixed to the shaft head at the rear end of the three longitudinal sealing guide shafts B, and a remote longitudinal connecting beam is connected between the remote longitudinal left connecting plate and the remote longitudinal right connecting plate; a remote longitudinal cylinder is provided in front of the left end of the longitudinal sealing back plate, and the cylinder rod of the remote longitudinal cylinder passes through the longitudinal sealing back plate and is connected to the remote longitudinal connecting beam; the longitudinal sealing preheating mechanism includes a longitudinal sealing main board and N groups of preheating molds Block; a rotating arm connecting block is fixed to the right end of the longitudinal sealing mainboard; a longitudinal sealing slide A is installed on each of the left and right sides of the longitudinal sealing mainboard, a longitudinal sealing cylinder A is installed on the right end of the longitudinal sealing mainboard, a longitudinal sealing guide shaft A that can slide axially left and right is installed between the two longitudinal sealing slides A through a linear bearing, and the cylinder rod of the longitudinal sealing cylinder A is connected to the right end of the longitudinal sealing guide shaft A; a longitudinal sealing slide B is installed on each of the left and right sides of the lower part of the longitudinal sealing mainboard, a longitudinal sealing cylinder B is installed on the left end of the lower part of the longitudinal sealing mainboard, a longitudinal sealing guide shaft B that can slide left and right is installed between the two longitudinal sealing slides B through a linear bearing, and the cylinder rod of the longitudinal sealing cylinder B is connected to the left end of the longitudinal sealing guide shaft B; N preheating module positioning holes are provided at the rear of the longitudinal sealing mainboard;

[0008] The preheating module comprises a heating block A, a heating block B and a longitudinal sealing rotating shaft, the heads of the heating blocks A and B are embedded with longitudinal sealing heating rods, the waists of the heating blocks A and B are both provided with through holes, the tail of the heating block A is provided with an upper fork, the tail of the heating block B is provided with a lower fork, the upper fork and the lower fork are provided with U-shaped fork openings with openings facing forward, and the upper and lower distances between the upper and lower forks are greater than the thickness of the longitudinal sealing mainboard; the upper fork is located above the longitudinal sealing mainboard, and the lower fork is located below the longitudinal sealing mainboard, the through holes on the waists of the heating blocks A and B are aligned with the preheating module positioning holes of the longitudinal sealing mainboard, and the longitudinal sealing rotating shaft is provided with a longitudinal sealing mainboard. The moving shaft passes through it; the heating block A and the heating block B are arranged in a scissor-like manner, the heating surfaces of the heating block A and the heating block B are arranged in a direction opposite to each other, and an equidistant gap is left between the two heating surfaces; the back edge sealing that is close together is placed in the gap between the two heating surfaces through the narrow groove A in front of the front block of the longitudinal former; an upper shift fork execution-positioning structure is provided between the longitudinal sealing guide shaft A and the upper surface of the longitudinal sealing main board, and a lower shift fork execution-positioning structure is provided between the longitudinal sealing guide shaft B and the lower surface of the longitudinal sealing main board. Under the drive of the longitudinal sealing cylinder A and the longitudinal sealing cylinder B, the heating block A and the heating block B are opened or fitted; the rotating arm connecting block is hinged to the longitudinal edge sealing rotating shaft;

[0009] The longitudinal sealing shutter mechanism comprises a longitudinal sealing shutter main block, a longitudinal sealing shutter auxiliary block and a longitudinal sealing shutter fork; a fork groove penetrating the left and right is provided in the middle and lower part of the longitudinal sealing shutter main block, and a through groove penetrating the front and back is provided in the middle position of the right side of the longitudinal sealing shutter main block; the longitudinal sealing shutter fork is arranged in the fork groove through an axial hole connecting structure, a blind hole A is provided on the top surface located on the left side of the longitudinal sealing shutter fork, a blind hole B is provided on the bottom surface of the through groove which is aligned with the position of the blind hole A up and down, and a shutter compression spring is embedded between the blind hole A and the blind hole B, and under the action of the shutter compression spring, the right end of the longitudinal sealing shutter fork is kept in a raised position; the longitudinal sealing shutter fork A wedge block is provided on the left side of the auxiliary block of the longitudinal seal shutter, and a groove is provided at the bottom of the wedge block, and the height of the wedge block is consistent with the height of the through groove on the right side of the main block of the longitudinal seal shutter; a longitudinal seal shutter locking block is installed in front of the auxiliary block of the longitudinal seal shutter, and a raised baffle is provided on the rear side of the longitudinal seal shutter locking block, and a screw is fixed on the rear side of the raised baffle, and a rubber block is provided on the screw, and the rubber block is in close contact with the front of the main block of the longitudinal seal shutter, and the main block of the longitudinal seal shutter is flush with the front of the auxiliary block of the longitudinal seal shutter; the main block of the longitudinal seal shutter is connected to the shaft head at the front end of the longitudinal seal guide shaft A through an shaft hole; the auxiliary block of the longitudinal seal shutter is fixed to the left end of the longitudinal seal main board;

[0010] The longitudinal sealing mechanism comprises roller connecting blocks fixed at both ends of the longitudinal sealing back plate, a longitudinal sealing bar is connected between the roller connecting blocks at both ends, the longitudinal sealing bar is located at the lower end of the former of the longitudinal sealing forming mechanism, a roller adjusting block is provided between the longitudinal sealing bar and the roller connecting blocks, and N pressure roller groups are installed on the longitudinal sealing bar;

[0011] The pressing roller group includes a film pressing block and a longitudinal film sealing pressing shaft A and a longitudinal film sealing pressing shaft B which are parallel to each other. The longitudinal film sealing pressing shaft A passes through the front and back of the longitudinal sealing sealing bar through a circular bearing hole arranged on the longitudinal sealing sealing bar, and the longitudinal film sealing pressing shaft B passes through the front and back of the longitudinal sealing sealing bar through a long hole A arranged on the longitudinal sealing sealing bar. The longitudinal sealing sealing bar is provided with a long hole B which is perpendicular to the long hole A and passes through the upper and lower parts of the longitudinal sealing sealing bar. A pin hole is provided in front of the longitudinal sealing bar and below the longitudinal film sealing pressing shaft B. The upper part of the film pressing block is provided with an axial hole which is clearance-matched with the longitudinal film sealing pressing shaft B, and the lower part of the film pressing block is provided with a through hole. The film pressing block is assembled on the longitudinal film sealing pressing shaft B through the through hole at the upper part. At the same time, the pressing A film pressing rotating shaft is installed in the through hole and the pin hole at the lower part of the film block, so that the film pressing block is hinged in the long hole B through the film pressing rotating shaft; the front and rear ends of the longitudinal film sealing axis A and the longitudinal film sealing axis B are respectively provided with a bearing group consisting of two bearings, and the outer end of a group of bearings at the rear end is provided with a film pressing shaft stop sleeve, so that the positions of the two groups of bearings are flush front and back; a film pressing positioning block is provided at the bottom of the longitudinal sealing sealing bar, and an adjusting bolt is provided between the film pressing positioning block and the lower part of the film pressing block, and a film pressing spring is provided on the adjusting bolt; the adjusting bolt is rotated to make the front and rear groups of bearings of the longitudinal film sealing axis A and the longitudinal film sealing axis B close to each other; the tangent of the N groups of bearings at the rear end of the N pressure roller groups is aligned with the symmetry line of the narrow groove A in front of the former block of the N formers;

[0012] The longitudinal edge sealing guide mechanism comprises brackets respectively fixed at the front ends of the two roller connecting blocks, a longitudinal sealing guide connecting plate is connected between the two brackets, the longitudinal sealing guide connecting plate is located below the longitudinal sealing mechanism, N guide retaining rings are fixed on the longitudinal sealing guide connecting plate, the guide retaining rings are arc-shaped retaining rings, and the N guide retaining rings respectively wrap N feeding tubes to press down the sealed back edge to make it stick to the tubular packaging film;

[0013] The film guide roller mechanism includes a roller beam fixed between two brackets, the roller beam is located below the longitudinal edge sealing guide mechanism, N groups of longitudinal sealing roller groups are arranged on the roller beam, the longitudinal sealing roller groups include two linear bearings penetrating the roller beam, longitudinal sealing roller guide shafts are arranged in the linear bearings, roller tensioning blocks are fixedly connected to the front ends of the two longitudinal sealing roller guide shafts, longitudinal sealing roller seats are inherently connected to the rear ends of the two longitudinal sealing roller guide shafts, longitudinal sealing rollers are arranged in the longitudinal sealing roller seats, roller springs are sleeved on the longitudinal sealing roller guide shafts, between the longitudinal sealing roller seats and the roller beam, the outer rotating surface of the longitudinal sealing roller is an inner concave arc surface, and the inner concave arc surface is consistent with the outer rotating surface of the feeding tube.

[0014] Furthermore, the preheating and sealing device for a multi-row packaging machine of the present invention comprises:

[0015] On the upper side of the longitudinal sealing main board: the longitudinal sealing guide shaft A passes through the U-shaped fork openings of all the upper forks of the N groups of preheating modules, the upper fork execution-positioning structure comprises a longitudinal sealing left retaining ring and a longitudinal sealing right retaining ring respectively fixed on the longitudinal sealing guide shaft A and located on the left and right sides of the upper fork, a longitudinal sealing compression spring is provided between the upper fork and the longitudinal sealing left retaining ring, the upper fork is kept in contact with the longitudinal sealing right retaining ring, and an L-shaped longitudinal sealing positioning plate is installed on the upper side of the longitudinal sealing main board and on the right side of the upper fork; Below the longitudinal sealing main board: the longitudinal sealing guide shaft B passes through the U-shaped fork openings of all the lower forks of the N groups of preheating modules, the lower fork execution-positioning structure includes a longitudinal sealing left retaining ring and a longitudinal sealing right retaining ring respectively fixed on the longitudinal sealing guide shaft B and located on the left and right sides of the lower fork, a longitudinal sealing compression spring is provided between the lower fork and the longitudinal sealing right retaining ring, the lower fork is kept in contact with the longitudinal sealing left retaining ring, and an L-shaped longitudinal sealing positioning plate is installed below the longitudinal sealing main board and on the left side of the lower fork.

[0016] In the longitudinal sealing mechanism, a group of bearings located at the rear side of the longitudinal sealing bar is located in front of a feed tube extending from the bottom of a longitudinally through cylindrical channel formed by embracing and assembling the former front block and the former rear block, and is arranged symmetrically with respect to the position of the narrow groove A in front of the former front block, so that the longitudinal sealing edge of the packaging bag after wrapping the feed tube is sandwiched between the two bearings of the group.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The preheating and sealing device for a multi-row packaging machine of the present invention can be used for longitudinal preheating and sealing of a continuous strip packaging machine. The device has a simple and compact structure and reliable operation. Heating and sealing are divided into two independent mechanisms. In this way, the sealing temperature and sealing pressure can be independently controlled, and the installation and debugging process is convenient.

[0019] The roller-type rolling sealing method used in the present invention can achieve the requirements of the longitudinal edge sealing pattern by setting different patterns on the roller. Since there is no overlap or reciprocating phenomenon during the rolling process, the bag making efficiency is improved while ensuring the packaging effect. Among them, in the preheating mechanism, since the packaging film passes through the gap between the two sealing blocks at a uniform speed without substantial contact, the impact change of the alternating pressure on the heating mold sealing block is avoided, the life loss of important parts can be almost ignored, and the requirements for the roughness and processing accuracy of the sealing position of the parts are reduced. At the same time, the design realizes the structural characteristics of continuous heating and rolling film pressing, and the two independent mechanisms can be adjusted separately. Without considering the bag length limit, it not only realizes continuous film movement to ensure the packaging quality, but also greatly improves the production speed and installation and debugging costs, meeting the market demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of a preheating and sealing device for a multi-row packaging machine according to the present invention;

[0021] Figure 2 yes Figure 1 The schematic diagram of the structure of the preheating and sealing device shown is a bottom view;

[0022] Figure 3 yes Figure 2 A schematic structural diagram of the preheating and sealing device from another perspective shown;

[0023] Figure 4 yes Figure 1 A front view of the preheating sealing device shown;

[0024] Figure 5 yes Figure 1 A top view of the preheating sealing device shown;

[0025] Figure 6 yes Figure 1 A bottom view of the preheating sealing device shown;

[0026] Figure 7 yes Figure 1 A schematic structural diagram of the longitudinal sealing support mechanism 100 and the remote longitudinal sealing mechanism 300 shown in FIG.

[0027] Figure 8 yes Figure 7 A schematic structural diagram of the longitudinal sealing support mechanism 100 and the remote longitudinal sealing mechanism 300 from another perspective;

[0028] Fig. 9 yes Figure 1 A schematic structural diagram of the longitudinal sealing molding mechanism 200 is shown in FIG.

[0029] Fig.10 yes Fig. 9 The schematic diagram of the local structure shown in the middle part A;

[0030] Fig.11 yes Fig. 9 The schematic diagram of the local structure shown in the middle part B;

[0031] Fig.12 yes Fig. 9 A schematic structural diagram of the longitudinal sealing and forming mechanism 200 from another perspective;

[0032] Fig.13 yes Figure 1 A structural schematic diagram of the longitudinal edge sealing guide mechanism 400 is shown in FIG.

[0033] Fig.14 yes Figure 1 A structural schematic diagram of the film guide roller mechanism 500 shown in FIG.

[0034] Fig.15 yes Fig.14 An enlarged view of the structure of the pressing roller group shown in FIG.

[0035] Fig.16 yes Fig.14 A structural schematic diagram of the film guide roller mechanism 500 from another perspective is shown.

[0036] Fig.17 yes Figure 1 A schematic structural diagram of the longitudinal sealing preheating mechanism 600 is shown in FIG.

[0037] Fig.18 yes Fig.17 The enlarged view of the local structure shown in the middle C part;

[0038] Fig.19 yes Fig.17 A structural schematic diagram of the longitudinal sealing preheating mechanism 600 from another perspective;

[0039] Fig. 20 yes Fig.19 The enlarged view of the local structure shown in the middle D part;

[0040] Fig.21 yes Fig.18 A schematic diagram of the structure of the preheating module 608 is shown in FIG.

[0041] Fig. 22 yes Fig.21 A schematic structural diagram of the preheating module 608 from another perspective;

[0042] Fig.23 yes Figure 1 and Figure 3 A schematic structural diagram of a longitudinal sealing shutter mechanism 700 is shown in FIG.

[0043] Fig.24 yes Fig.23 A schematic structural diagram of the longitudinal sealing shutter mechanism 700 from another perspective;

[0044] Fig.25 yes Fig.24 A schematic structural diagram of the longitudinal seal shutter fork 704 is shown in FIG.

[0045] Fig.26 yes Fig.24 A structural diagram of the longitudinal sealing shutter main block 701 shown in FIG.

[0046] Fig. 27 yes Fig.24 A schematic diagram of the structure of the longitudinal sealing shutter sub-block 702 shown in FIG.

[0047] Fig.28 yes Fig. 27 The structure diagram of the longitudinal sealing shutter sub-block 702 from another perspective is shown;

[0048] Fig.29 yes Fig.23 The structural diagram of the left side of the longitudinal sealing shutter mechanism 700 is shown;

[0049] Fig.30 yes Fig.24 The longitudinal sealing shutter mechanism 700 is a cross-sectional view after the longitudinal sealing shutter main block 701 is cut away;

[0050] Fig.31 yes Fig.23 The schematic diagram of the working principle of the longitudinal sealing shutter mechanism 700 is shown;

[0051] Fig.32 yes Figure 1 A schematic structural diagram of the longitudinal sealing forming mechanism 200 and the longitudinal sealing mechanism 800 is shown in FIG.

[0052] Fig.33 yes Fig.32 The middle part E shows the positional relationship between the bearing group in the pressure roller group and the front block of the former;

[0053] Fig.34 yes Fig.32 A structural schematic diagram of the longitudinal sealing mechanism 800 and the feeding tube 204 is shown in FIG.

[0054] Fig.35 yes Fig.34 The structural schematic diagram of the longitudinal sealing mechanism 800 and the feeding tube 204 from another perspective is shown;

[0055] Fig.36 yes Fig.35 A structural schematic diagram of the longitudinal sealing bar 804 and one of the pressure roller groups shown in FIG.

[0056] Fig.37 yes Fig.36 The enlarged view of the local structure of the front part of the roller group shown in the middle F;

[0057] Fig.38 yes Fig.36 The middle G portion shows an enlarged view of the local structure of the relevant holes on the longitudinal sealing bar 804;

[0058] Fig.39 yes Fig.36 A schematic structural diagram of the longitudinal sealing bar 804 and one of the pressing roller groups from another perspective;

[0059] Fig.40 yes Fig.39 The enlarged view of the local structure of the rear part of the roller group shown in the middle H.

[0060] Description of reference numerals in the figures: 100-vertical sealing support mechanism 200-vertical sealing forming mechanism 300-longitudinal sealing mechanism

[0061] 400-Longitudinal edge sealing guide mechanism 500-Film guide roller mechanism 600-Longitudinal sealing preheating mechanism 700-Vertical seal opening and closing mechanism 800-Vertical seal closing mechanism

[0062] 101-vertical seal support seat 102-vertical seal back plate 103-right guide block A104-right guide block B 105-left guide block A 106-left guide block B 201-middle connecting fixing plate 202-packaging film inlet plate 203-film receiving bracket

[0063] 204-feeding pipe 205-film frame 206-film sheet

[0064] 207-former front block 208-former rear block 209-groove

[0065] 210-Narrow Slit A 211-Narrow Slit B 301-Longitudinal Cylinder 302-Longitudinal left connecting plate 303-Longitudinal right connecting plate

[0066] 304-longitudinal connecting beam 3051-longitudinal sealing guide axis A 3052-longitudinal sealing guide axis B 306-rotating arm fixing block 307-longitudinal edge sealing shaft 308-self-lubricating bushing

[0067] 401-longitudinal seal guide connecting plate 402-guide retaining ring 450-bracket

[0068] 501-longitudinal sealing roller 502-longitudinal sealing roller seat 503-linear bearing

[0069] 504-pressure roller spring 505 pressure roller beam 506-pressure roller tension block

[0070] 507- longitudinal sealing roller guide shaft 508- longitudinal sealing roller pin shaft

[0071] 601- Rotating arm connection block 602- Vertical seal main board 6031- Vertical seal cylinder A 6032-Longitudinal seal cylinder B 6041-Longitudinal seal cylinder A pad 6042-Longitudinal seal cylinder B pad 6051-Longitudinal seal guide shaft A 6052-Longitudinal seal guide shaft B 6061-Longitudinal seal slide A 6062-Longitudinal seal slide B 607-Longitudinal seal positioning block 608-Preheating module

[0072] 6091-Longitudinal sealing and sealing left retaining ring 6092-Longitudinal sealing and sealing right retaining ring 610-Longitudinal sealing compression spring

[0073] 6081-Heating block A 6082-Heating block B 6083-Vertical sealing heating rod

[0074] 6084-vertical seal rotating shaft 6085-vertical rotating shaft sleeve 6086-vertical seal baffle

[0075] 60871-upper fork60872-lower fork

[0076] 701-Main block of longitudinal seal switch 702-Sub block of longitudinal seal switch 703-Locking block of longitudinal seal switch 704-vertical seal switch fork 705-rubber bolt stopper 706-vertical seal switch pin 707-opener compression spring 708-shift fork slot 709-through slot

[0077] 710-Blind hole A 711-Blind hole B 712-Wedge block

[0078] 713-groove 714-raised baffle

[0079] 801-Roller connection block 802-Roller adjustment block 803-Vertical sealing and film pressing axis A 8032- vertical sealing film pressing shaft B 804- vertical sealing sealing bar 805- film pressing block

[0080] 806-film positioning block 807-adjusting bolt 8071-shaft shoulder

[0081] 808-film pressing spring 809-film pressing rotating shaft 810-bearing

[0082] 811-Moulding shaft stop sleeve 812-Long hole B 813-Circular bearing hole

[0083] 814-Long hole A

[0084] 815-Pin hole DETAILED DESCRIPTION

[0085] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the following embodiments are by no means intended to limit the present invention in any way.

[0086] like Figures 1 to 6As shown, the present invention proposes a preheating and sealing device for a multi-row packaging machine, comprising a longitudinal sealing support mechanism 100, a longitudinal sealing forming mechanism 200, a remote longitudinal sealing mechanism 300, a longitudinal edge sealing guide mechanism 400, a film guide roller mechanism 500, a longitudinal sealing preheating mechanism 600, a longitudinal sealing opener and closer mechanism 700 and a longitudinal sealing and closing mechanism 800; the general layout of the above-mentioned mechanisms is: the longitudinal sealing forming mechanism 200 and the remote longitudinal sealing mechanism 300 are arranged at the rear end of the longitudinal sealing support mechanism 100, the longitudinal sealing opener and closer mechanism 700 is arranged at the front end of the remote longitudinal sealing mechanism 300, the longitudinal sealing preheating mechanism 600 is arranged at the lower end of the longitudinal sealing opener and closer mechanism 700, the longitudinal sealing and closing mechanism 800 is arranged at the upper end of the longitudinal sealing forming mechanism 200, and the remaining mechanisms are connected as a whole through the longitudinal sealing support mechanism 100. The structures and relative positional relationships of the above-mentioned mechanisms are as follows.

[0087] like Figure 7 As shown, the longitudinal sealing support mechanism 100 includes a longitudinal sealing back plate 102, a pair of left guide blocks are fixed on the front and rear surfaces of the left end of the longitudinal sealing back plate 102, two linear bearings A are provided through the longitudinal sealing back plate 102 and the left guide block, a pair of right guide blocks are fixed on the front and rear surfaces of the right end of the longitudinal sealing back plate 102, three linear bearings B are provided through the longitudinal sealing back plate 102 and the right guide block, the bottom of the left guide block and the right guide block are flush with the bottom surface of the longitudinal sealing back plate 102, and a longitudinal sealing support seat 101 is respectively fixed to the bottom surface of the two ends of the longitudinal sealing back plate 102; the entire equipment can be fixedly connected to the packaging machine through the two longitudinal sealing support seats 101.

[0088] like Fig. 9 , Fig.12 and Fig.32 As shown, the longitudinal sealing molding mechanism 200 includes an intermediate connecting and fixing plate 201 fixed in front of the longitudinal sealing back plate 102, a packaging film inlet plate 202 is fixed on the upper surface of the intermediate connecting and fixing plate 201, and the packaging film inlet plate 202 is provided with N grooves 209 with openings facing forward, and the upper front portion of the packaging film inlet plate 202 is designed as an inclined surface intersecting with the grooves 209, and the upper portion of the grooves 209 is the packaging film inlet; N formers are provided in front of the intermediate connecting and fixing plate 201, and the formers include a former front block 207 and a former rear block 208, and the The longitudinal surfaces of the former front block 207 and the former rear block 208 facing each other are both provided with longitudinal semicircular grooves, and the former front block 207 and the former rear block 208 are assembled in pairs according to the longitudinal semicircular grooves to form a longitudinally penetrating cylindrical channel; after the positions of the N former cylindrical channels are aligned one by one with the N grooves 209 on the packaging film inlet plate 202, a feed tube 204 is inserted therein, and the outer diameter of the feed tube 204 is smaller than the inner diameter of the cylindrical channel, so that an annular gap for the packaging film to pass through is formed between the feed tube 204 and the cylindrical channel; Fig. 9 and Fig.10 As shown, a narrow groove A210 is provided at the bottom of the semicircular groove of the former front block 207, and the back sealing edge of the packaging film is used to protrude from the narrow groove A, and the two back sealing edges are aligned and close together.

[0089] like Fig. 9 and Fig.11 As shown, a film receiving frame plate 205 is provided on the packaging film inlet plate 202 in front of the bottom of the groove, and film receiving brackets 203 are installed at both ends of the film receiving frame plate 205. The film receiving bracket 203 is fixedly connected to the front of the longitudinal sealing back plate 102. N film receiving sheets 206 corresponding to the positions of the N grooves 209 are provided on the film receiving frame plate 205. A narrow groove B211 is provided at the rear of the film receiving sheet 206, and the opening direction of the narrow groove B is consistent with the tangent normal direction of the feeding tube 204.

[0090] like Figures 1 to 5 , Figure 7 and Figure 8 As shown, the remote longitudinal sealing mechanism 300 includes two longitudinal sealing guide shafts A3051 arranged on two linear bearings A in the longitudinal sealing support mechanism 100 and three longitudinal sealing guide shafts B3052 arranged on three linear bearings B in the longitudinal sealing support mechanism 100, a remote longitudinal left connecting plate 302 is fixed to the shaft head at the rear end of the two longitudinal sealing guide shafts A3051, a rotating arm fixing block 306 is fixed to the shaft head at the front end of the three longitudinal sealing guide shafts B3052, and a longitudinal edge sealing rotating shaft 307 is installed on the rotating arm fixing block 306; a remote longitudinal right connecting plate 303 is fixed to the shaft head at the rear end of the three longitudinal sealing guide shafts B3052, and a remote longitudinal connecting beam 304 is connected between the remote longitudinal left connecting plate 302 and the remote longitudinal right connecting plate 303; a remote longitudinal cylinder 301 is provided in front of the left end of the longitudinal sealing back plate 102, and the cylinder rod of the remote longitudinal cylinder 301 passes through the longitudinal sealing back plate 102 and is connected to the remote longitudinal connecting beam 304.

[0091] like Figures 17 to 22 As shown, the longitudinal sealing preheating mechanism 600 includes a longitudinal sealing main board 602 and N groups of preheating modules 608 ; a rotating arm connecting block 601 is fixed to the right end of the longitudinal sealing main board 602 .

[0092] like Fig.17 As shown, a longitudinal seal slide A6061 is installed on each of the left and right sides of the longitudinal seal main board 602, a longitudinal seal cylinder A6031 is installed on the right end of the longitudinal seal main board 602, a longitudinal seal guide shaft A6051 that can slide axially left and right is installed between the two longitudinal seal slides A6061 through a linear bearing, and the cylinder rod of the longitudinal seal cylinder A6031 is connected to the right end of the longitudinal seal guide shaft A6051; Fig.19As shown, a longitudinal sealing slide B6062 is installed on each of the left and right sides below the longitudinal sealing main board 602, a longitudinal sealing cylinder B6032 is installed on the left end below the longitudinal sealing main board 602, a longitudinal sealing guide shaft B6052 that can slide left and right is installed between the two longitudinal sealing slides B6062 through a linear bearing, and the cylinder rod of the longitudinal sealing cylinder B6032 is connected to the left end of the longitudinal sealing guide shaft B6052.

[0093] The rear portion of the longitudinal sealing mainboard 602 is provided with N preheating module positioning holes; Fig.21 and Fig. 22 As shown, the preheating module 608 includes a heating block A6081, a heating block B6082 and a longitudinal sealing rotating shaft 6084, the heads of the heating blocks A6081 and B6082 are embedded with longitudinal sealing heating rods 6083, the waists of the heating blocks A6081 and B6082 are both provided with through holes, the tail of the heating block A6081 is provided with an upper fork 60871, the tail of the heating block B6082 is provided with a lower fork 60872, the upper fork 60871 and the lower fork 60872 are provided with U-shaped fork openings facing forward, and the upper and lower distances between the upper and lower forks are greater than the thickness of the longitudinal sealing main board 602.

[0094] like Figures 17 to 20 As shown, the upper fork 60871 is located above the longitudinal sealing main board 602, and the lower fork 60872 is located below the longitudinal sealing main board 602. The through holes at the waist of the heating block A 6081 and the heating block B 6082 are aligned with the preheating module positioning holes of the longitudinal sealing main board 602, and the longitudinal sealing rotating shaft 6084 passes through them. Fig.21 and Fig. 22 As shown, the upper and lower ends of the longitudinal sealing rotating shaft 6084 are respectively installed with a longitudinal rotating shaft sleeve 6805 and a longitudinal sealing baffle 6086.

[0095] The heating block A6081 and the heating block B6082 are arranged in a scissor-like manner, the heating surfaces of the heating block A6081 and the heating block B6082 are arranged opposite to each other, and an equidistant gap is left between the two heating surfaces; the narrow groove A210 in front of the longitudinal former front block 207 protrudes out and the back seal edge that is close together is placed in the gap between the two heating surfaces.

[0096] An upper shift fork execution-positioning structure is provided between the longitudinal sealing guide shaft A6051 and the upper surface of the longitudinal sealing main board 602, and a lower shift fork execution-positioning structure is provided between the longitudinal sealing guide shaft B6052 and the lower surface of the longitudinal sealing main board 602. Driven by the longitudinal sealing cylinder A6031 and the longitudinal sealing cylinder B6032, the heating block A6081 and the heating block B6082 are opened or closed.

[0097] like Fig.17 and Fig.18 As shown, on the top of the longitudinal sealing main board 602: the longitudinal sealing guide shaft A6051 passes through the U-shaped fork openings of all the upper forks 60871 of the N group preheating module 608, the upper fork execution-positioning structure includes a longitudinal sealing left retaining ring 6091 and a longitudinal sealing right retaining ring 6092 respectively fixed on the longitudinal sealing guide shaft A6051 and located on the left and right sides of the upper fork 60871, a longitudinal sealing compression spring 610 is provided between the upper fork 60871 and the longitudinal sealing left retaining ring 6091, the upper fork 60871 and the longitudinal sealing right retaining ring 6092 are kept in contact, and an L-shaped longitudinal sealing positioning plate 607 is installed on the longitudinal sealing main board 602 and on the right side of the upper fork 60871.

[0098] like Fig.19 and Fig. 20 As shown, below the longitudinal sealing main board 602: the longitudinal sealing guide shaft B6052 passes through the U-shaped fork openings of all the lower forks 60872 of the N group preheating module 608, the lower fork execution-positioning structure includes a longitudinal sealing left retaining ring 6091 and a longitudinal sealing right retaining ring 6092 respectively fixed on the longitudinal sealing guide shaft B6052 and located on the left and right sides of the lower fork 60872, a longitudinal sealing compression spring 610 is provided between the lower fork 60872 and the longitudinal sealing right retaining ring 6092, the lower fork 60872 is kept in contact with the longitudinal sealing left retaining ring 6091, and an L-shaped longitudinal sealing positioning plate 607 is installed below the longitudinal sealing main board 602 and on the left side of the lower fork 60872.

[0099] The vertical plate of the L-shaped longitudinal seal positioning block 607 is provided with a screw hole, in which a positioning bolt can be installed.

[0100] like Fig.11 and Fig.12 As shown, the axial position of the longitudinal sealing left retaining ring 6091 relative to the longitudinal sealing guide shaft A6051 is adjustable, and the longitudinal sealing compression spring 610 is put in a compressed state by adjusting the position of the longitudinal sealing left retaining ring 6091.

[0101] The distance of the equidistant gap between the two heating surfaces is determined when debugging the equipment for each batch of products. It is generally 1-3 mm more than the thickness of the film. If the distance is too close, the film will be blocked from moving inside and the heating block may burn the film. If the distance is too far, the film will not be heated and the next sealing process will not be possible. The width of the equidistant gap between the two heating surfaces is controlled by the position of the longitudinal sealing left retaining ring and the longitudinal sealing right retaining ring in the upper and lower fork execution-positioning structure.

[0102] The rotating arm connecting block 601 is hinged to the longitudinal edge sealing shaft 307. Specifically, Figure 7As shown, the rotating arm connecting block 601 is sleeved on the longitudinal edge sealing shaft 307 , and a self-lubricating sleeve 308 is provided between the longitudinal edge sealing shaft 307 and the rotating arm connecting block 601 .

[0103] like Figures 23 to 31 As shown, the longitudinal sealing shutter mechanism 700 includes a longitudinal sealing shutter main block 701, a longitudinal sealing shutter auxiliary block 702 and a longitudinal sealing shutter shift fork 704; Fig.26 As shown, the middle and lower part of the main block 701 of the longitudinal seal shutter is provided with a fork groove 708 that passes through the left and right sides, and the middle position of the right side of the main block 701 of the longitudinal seal shutter is provided with a through groove 709 that passes through the front and back; Fig.30 As shown, the longitudinal seal shutter fork 704 is arranged in the fork groove 708 through the shaft hole connection structure, the top surface located on the left side of the longitudinal seal shutter fork 704 is provided with a blind hole A710, the bottom surface of the through groove 709 is provided with a blind hole B711 aligned with the position of the blind hole A710, and a shutter compression spring 707 is embedded between the blind hole A710 and the blind hole B711. Under the action of the shutter compression spring 707, the right end of the longitudinal seal shutter fork 704 is kept in a raised position; as shown in FIG. Fig.23 , Fig. 27 and Fig.28 As shown, a wedge block 712 is provided on the left side of the longitudinal sealing shutter auxiliary block 702, and a groove 713 is provided at the bottom of the wedge block 712. The height of the wedge block 712 is consistent with the height of the through groove 709 on the right side of the longitudinal sealing shutter main block 701; Fig.23 and Fig.29 As shown, a longitudinal sealing opener and closure locking block 703 is installed in front of the longitudinal sealing opener and closure sub-block 702, and a raised baffle plate 714 is provided on the rear side of the longitudinal sealing opener and closure locking block 703. Screws are fixed on the rear side surface of the raised baffle plate 714, and a rubber baffle block 705 is provided on the screw. The rubber baffle block 705 is in close contact with the front of the longitudinal sealing opener and closure main block 701, and the longitudinal sealing opener and closure main block 701 is flush with the front of the longitudinal sealing opener and closure sub-block 702.

[0104] like Figure 7 , Figure 8 , Fig.23 and Fig.24 As shown, two shaft holes are provided on the longitudinal sealing shutter main block 701 along the front-to-back direction, which are respectively aligned with the positions of the two longitudinal sealing guide shafts A3051 in the remote longitudinal sealing mechanism 300, and the longitudinal sealing shutter main block 701 is connected to the shaft head at the front end of the longitudinal sealing guide shaft A3051 through the shaft hole; Figure 8 , Fig.11 , Fig.23 and Fig.24As shown, the longitudinal sealing shutter sub-block 702 is fixedly connected to the left end of the longitudinal sealing main board 602. Specifically, the left end of the longitudinal sealing main board 602 is provided with two connecting holes for connecting the longitudinal sealing shutter mechanism 700, and the longitudinal sealing shutter sub-block 702 is provided with a through hole aligned with the two connecting holes on the left end of the longitudinal sealing main board 602. The longitudinal sealing shutter sub-block 702 and the longitudinal sealing main board 602 are fixed by bolts.

[0105] like Fig.32 As shown, the longitudinal sealing mechanism 800 includes roller connecting blocks 801 fixed at both ends of the longitudinal sealing back plate 102, and a longitudinal sealing rod 804 is connected between the roller connecting blocks 801 at both ends. The longitudinal sealing rod 804 is located at the lower end of the former of the longitudinal sealing forming mechanism 200, and a roller adjusting block 802 is provided between the longitudinal sealing rod 804 and the roller connecting block 801. Fig.32 , Fig.34 and Fig.35 As shown, N pressure roller groups are installed on the longitudinal sealing bar 804.

[0106] like Figures 34 to 40 As shown, the pressing roller group includes a film pressing block 805 and a longitudinal film pressing shaft A8031 and a longitudinal film pressing shaft B8032 which are parallel to each other. The longitudinal film pressing shaft A8031 passes through the front and rear of the longitudinal sealing bar 804 through a circular bearing hole 813 arranged on the longitudinal sealing bar 804. The longitudinal film pressing shaft B8032 passes through the front and rear of the longitudinal sealing bar 804 through a long hole A814 arranged on the longitudinal sealing bar 804. The longitudinal sealing bar 804 is provided with a longitudinal sealing shaft 8031 ​​which is perpendicular to the long hole A814. A long hole B812 intersects and passes through the upper and lower parts of the longitudinal sealing bar 804, and a pin hole 815 is provided in front of the longitudinal sealing bar 804 and below the longitudinal sealing film pressing shaft B8032; an axial hole that is clearance-matched with the longitudinal sealing film pressing shaft B8032 is provided on the upper part of the film pressing block 805, and a through hole is provided on the lower part of the film pressing block 805. The film pressing block 805 is assembled on the longitudinal sealing film pressing shaft B8032 through the through hole on the upper part, driving the bearings 810 fixed at the front and rear ends of the longitudinal sealing film pressing shaft B8032 to be connected in series.

[0107] At the same time, a film pressing rotating shaft 809 is installed in the through hole and the pin hole 815 at the bottom of the film pressing block 805, so that the film pressing block 805 is hinged in the long hole B812 through the film pressing rotating shaft 809; the front and rear ends of the longitudinal film sealing axis A8031 and the longitudinal film sealing axis B8032 are respectively provided with a bearing group consisting of two bearings 810 (the front and rear two groups of bearings are tightly attached to each other to form a roller structure), and the outer end of the rear end group of bearings 810 is provided with a film pressing shaft stop sleeve 811, so that the positions of the two groups of bearings are aligned front and back. A film pressing positioning block 806 is provided at the bottom of the longitudinal sealing bar 804, and an adjusting bolt 807 is provided between the film pressing positioning block 806 and the lower part of the film pressing block 805, and a film pressing spring 808 is provided on the adjusting bolt 807. Fig.39 and Fig.40 As shown, in the pressing roller group, the screw diameter of the adjusting bolt 807 is the same as the inner diameter of the film pressing spring 808, and a shoulder 8071 is provided at the tail end of the adjusting bolt 807. One end of the film pressing spring 808 abuts against the shoulder 8071, and the other end of the film pressing spring 808 abuts against the side of the film pressing block 805. The adjusting bolt 807 is rotated so that the front and rear groups of bearings 810 of the longitudinal sealing film pressing shaft A8031 and the longitudinal sealing film pressing shaft B8032 are tightly attached to each other.

[0108] In the longitudinal sealing mechanism 800, a group of bearings 810 located at the rear side of the longitudinal sealing bar 804 is located in front of the feed pipe 204 extending from the bottom of the longitudinally through cylindrical channel formed by the former block 207 and the former block 208 being assembled together. Fig.32 and Fig.33 As shown, the tangent lines of the N groups of bearings 810 at the rear end of the N pressure roller groups are aligned with the symmetry lines of the narrow grooves A210 in front of the former front blocks 207 of the N formers; that is, the group of bearings 810 at the rear end are arranged symmetrically with respect to the positions of the narrow grooves A210 in front of the former front blocks 207, so that the longitudinal edge seal after the packaging bag wraps the discharge tube 204 is sandwiched between the two bearings 810 of this group.

[0109] like Figure 2 As shown, the longitudinal edge sealing guide mechanism 400 includes brackets 450 respectively fixed to the front ends of two roller connecting blocks 801, and a longitudinal sealing guide connecting plate 401 is connected between the two brackets 450. The longitudinal sealing guide connecting plate 401 is located below the longitudinal sealing mechanism 800. Fig.13 As shown, N guide retaining rings 402 are fixed on the longitudinal sealing guide connecting plate 401, and the guide retaining rings 402 are arc-shaped retaining rings. The N guide retaining rings 402 respectively wrap N feed pipes 204. Figure 6 As shown, the sealed back edge is pressed down to make it stick to the tubular packaging film.

[0110] like Figures 14 to 16 As shown, the film guide roller mechanism 500 includes a roller beam 505 fixed between two brackets 450, the roller beam 505 is located below the longitudinal edge sealing guide mechanism 400, and the roller beam 505 is provided with N groups of longitudinal sealing roller groups, and the longitudinal sealing roller groups include two linear bearings 503 passing through the roller beam 505, and the linear bearings 503 are provided with longitudinal sealing roller guide shafts 507, and the front ends of the two longitudinal sealing roller guide shafts 507 are fixedly connected There is a roller tensioning block 506, and the rear ends of the two longitudinal sealing roller guide shafts 507 are inherently connected to the longitudinal sealing roller seat 502. The longitudinal sealing roller seat 502 is provided with a longitudinal sealing roller 501. A roller spring 504 is sleeved on the longitudinal sealing roller guide shaft 507 between the longitudinal sealing roller seat 502 and the roller crossbeam 505. The outer rotating surface of the longitudinal sealing roller 501 is an inner concave arc surface, and the inner concave arc surface is consistent with the outer rotating surface of the discharge pipe 204. Figure 2 , Figure 3 and Figure 6 As shown, in the N groups of longitudinal sealing and pressing rollers, the outer rotating surface of the longitudinal sealing and pressing roller 501 is coaxial with the outer rotating surfaces of the N feeding tubes 204 .

[0111] The process of sealing a packaging bag using the device provided by the present invention is as follows: Figure 1 , Fig. 9 , Fig.21 and Fig. 22 As shown, the packaging film divided into long strips descends along the inclined surface of the packaging film inlet plate 202 into the groove 209 with the opening facing forward and the feed tube 204 to wrap the profile tube shape. The two aligned and close-together sealed edges extend out from the narrow groove A210 at the front end of the former front block 207, pass through the equidistant gap between the heating surfaces of the heating block A6081 and the heating block B6082 of the longitudinal sealing preheating mechanism 600 for preheating, and continue to descend under the pulling of the external mechanism. The heated back sealed edge enters the pressure roller group on the rear side of the longitudinal sealing mechanism 800 for sealing, as shown in FIG. Fig.32 and Fig.33 The packaging film continues to move downward and enters the longitudinal edge sealing guide mechanism 400. Figure 6 and Fig.13 As shown, under the guidance of the guide ring 402, the back seal of the packaging bag falls toward the cylindrical surface of the packaging bag. The packaging film continues to move downward, and the packaging bag enters the film guide roller mechanism 500. The back seal is pressed and adhered to the cylindrical surface of the packaging bag by the longitudinal sealing roller 501.

[0112] like Figures 17 to 20As shown, in the longitudinal sealing preheating mechanism 600, the cylinder rod of the longitudinal sealing cylinder A6031 on the longitudinal sealing main board 602 extends out, and the longitudinal sealing left and right retaining rings 6091 and 6092 move to the left under the linkage action of the longitudinal sealing guide shaft A6051, and the longitudinal sealing right retaining ring 6092 pushes the upper shift fork 60871 at the tail of the heating block A6801 to rotate to the left; similarly, the cylinder rod of the longitudinal sealing cylinder B6032 under the longitudinal sealing main board 602 extends out, and the longitudinal sealing left and right retaining rings 6091 and 6092 move to the right under the linkage action of the longitudinal sealing guide shaft B605, and the longitudinal sealing left retaining ring 6091 pushes the lower shift fork 60872 at the tail of the heating block B6802 to rotate to the right. That is, the upper and lower forks 60871 and 60872 are both close to the middle, as shown in FIG. Fig.21 and Fig. 22 As shown, the two heating blocks 6081 and 6082 are separated, and maintenance, film penetration, debugging and other work can be carried out at this time. The installation positions of the upper longitudinal sealing right retaining ring 6092 and the lower longitudinal sealing left retaining ring 6092 can be adjusted respectively. In addition, the positioning bolts on the longitudinal sealing positioning block 607 can also adjust the gap between the heads of the two longitudinal sealing heating blocks to meet different film thickness requirements.

[0113] like Fig.36 , Fig.37 , Fig.39 and Fig.40 As shown, in the longitudinal sealing mechanism 800, the screwing amount of the adjusting bolt 807 on the film pressing positioning block 806 is adjusted to change the length of the film pressing spring 808 to adjust the sealing pressure. In addition, by changing the rear side bearing 810 to a roller with texture, the longitudinal sealing edge can be textured.

[0114] Fig.31 The figure shows the position and state of each part of the longitudinal seal shutter mechanism 700 when it is working. The shutter compression spring 707 is in a relatively relaxed state, the longitudinal seal shutter fork 704 is in a horizontal position, the longitudinal seal shutter main block 701 is flush with the front of the longitudinal seal shutter sub-block 702, the rubber end surface behind the rubber bolt stopper 705 is in contact with the front of the longitudinal seal shutter main block 701, and the right side of the longitudinal seal shutter fork 704 is inserted into the bottom groove of the longitudinal seal shutter sub-block 702, and the entire longitudinal seal shutter mechanism 700 maintains a balanced state. When the left side of the longitudinal seal shutter fork 704 is lifted, the shutter compression spring 707 is compressed, and the right end of the longitudinal seal shutter fork 704 is disengaged from the bottom groove of the longitudinal seal shutter sub-block 702, pulling the longitudinal seal shutter sub-block 702 outward, and the longitudinal seal shutter mechanism 700 performs an opening action, as shown in FIG. Figure 1 As shown, the entire longitudinal sealing preheating mechanism 600 rotates along the longitudinal edge sealing shaft 307 , and at this time, the longitudinal sealing preheating mechanism 600 can be debugged and maintained.

[0115] like Figure 1 and Figure 7As shown, when the cylinder rod of the far longitudinal cylinder 301 of the longitudinal sealing support mechanism 100 is extended, the far longitudinal connecting beam 304 moves backward, and the entire longitudinal sealing preheating mechanism 600 enters the working position under the linkage action of the longitudinal sealing opener main block 701 and the rotating arm fixed block 306, and the longitudinal edge seal enters the rear end gap of the preheating module 608 of the longitudinal sealing preheating mechanism 600 for preheating; when the cylinder rod of the far longitudinal cylinder 301 of the longitudinal sealing support mechanism 100 is retracted, the far longitudinal connecting beam 304 moves forward, and the entire longitudinal sealing preheating mechanism 600 withdraws from the working position under the linkage action of the longitudinal sealing opener main block 701 and the rotating arm fixed block 306, and the longitudinal edge seal withdraws from the rear end gap of the preheating module 608 of the longitudinal sealing preheating mechanism 600. At this time, the preheating work of the longitudinal edge seal can be stopped for maintenance and adjustment.

[0116] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front”, “back”, “bottom” and “top” are based on the directions 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 component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations of the present invention.

[0117] Although the present invention and the preheating and sealing device for a multi-row packaging machine are schematically described above in conjunction with the drawings, the present invention is not limited to the above-mentioned specific implementation scheme. What is shown in the drawings is only one of the implementation schemes of the present invention and is not limited to the above-mentioned specific implementation scheme. It is not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can make many variations without departing from the purpose of the present invention. Any obvious modifications thereto should be protected by the present invention.

Claims

1. A preheating and sealing device for a multi-row packaging machine, characterized in that: It comprises a longitudinal sealing support mechanism (100), a longitudinal sealing forming mechanism (200), a remote longitudinal sealing mechanism (300), a longitudinal edge sealing guide mechanism (400), a film guide roller mechanism (500), a longitudinal sealing preheating mechanism (600), a longitudinal sealing opening and closing mechanism (700) and a longitudinal sealing closing mechanism (800); The longitudinal sealing support mechanism (100) comprises a longitudinal sealing back plate (102), a pair of left guide blocks are fixed to the front and rear surfaces of the left end of the longitudinal sealing back plate (102), two linear bearings A are provided through the longitudinal sealing back plate (102) and the left guide block, a pair of right guide blocks are fixed to the front and rear surfaces of the right end of the longitudinal sealing back plate (102), three linear bearings B are provided through the longitudinal sealing back plate (102) and the right guide block, the bottoms of the left guide blocks and the right guide blocks are flush with the bottom surface of the longitudinal sealing back plate (102), and a longitudinal sealing support seat (101) is respectively fixed to the bottom surface of both ends of the longitudinal sealing back plate (102); The longitudinal sealing molding mechanism (200) comprises an intermediate connecting and fixing plate (201) fixed in front of the longitudinal sealing back plate (102), a packaging film inlet plate (202) is fixed on the upper surface of the intermediate connecting and fixing plate (201), the packaging film inlet plate (202) is provided with N grooves (209) with openings facing forward, the front upper portion of the packaging film inlet plate (202) is designed as an inclined surface intersecting with the grooves (209), and the upper portion of the grooves (209) is the packaging film inlet; the intermediate connecting and fixing plate N formers are arranged in front of (201), and the formers include a former front block (207) and a former rear block (208). The longitudinal surfaces of the former front block (207) and the former rear block (208) opposite to each other are both provided with longitudinal semicircular grooves. The former front block (207) and the former rear block (208) are assembled in pairs according to the longitudinal semicircular grooves to form a longitudinally through cylindrical channel; the cylindrical channels of the N formers are connected to the N grooves (207) on the packaging film inlet plate (202). 9) are aligned one by one, and a feed tube (204) is inserted therein, wherein the outer diameter of the feed tube (204) is smaller than the inner diameter of the cylindrical channel in which it is located, so that an annular gap for the packaging film to pass through is formed between the feed tube (204) and the cylindrical channel; a narrow groove A (210) is provided at the bottom of the semicircular groove of the former front block (207), so that the back sealing edge of the packaging film can protrude from the narrow groove A, and the two back sealing edges are aligned and close together; the packaging film inlet plate (202) is provided with a narrow groove A (210) at the bottom of the groove. A film collar frame plate (205) is provided in front of the part, and film collar brackets (203) are installed at both ends of the film collar frame plate (205), and the film collar bracket (203) is fixedly connected to the front of the longitudinal sealing back plate (102). The film collar frame plate (205) is provided with N film collar pieces (206) corresponding to the positions of the N grooves (209) one by one, and a narrow groove B (211) is provided at the rear of the film collar piece (206), and the opening direction of the narrow groove B is consistent with the tangent normal direction of the feeding tube (204); The remote longitudinal sealing mechanism (300) comprises two longitudinal sealing guide shafts A (3051) arranged on two linear bearings A in the longitudinal sealing support mechanism (100) and three longitudinal sealing guide shafts B (3052) arranged on three linear bearings B in the longitudinal sealing support mechanism (100); a remote longitudinal left connecting plate (302) is fixed on the shaft heads at the rear ends of the two longitudinal sealing guide shafts A (3051); a rotating arm fixing block (306) is fixed on the shaft heads at the front ends of the three longitudinal sealing guide shafts B (3052); a longitudinal edge sealing rotating shaft (307) is installed on the rotating arm fixing block (306); a remote longitudinal right connecting plate (303) is fixed on the shaft heads at the rear ends of the three longitudinal sealing guide shafts B (3052); a remote longitudinal connecting beam (304) is connected between the remote longitudinal left connecting plate (302) and the remote longitudinal right connecting plate (303); A far longitudinal cylinder (301) is provided in front of the left end of the longitudinal sealing back plate (102), and a cylinder rod of the far longitudinal cylinder (301) passes through the longitudinal sealing back plate (102) and is connected to the far longitudinal connecting beam (304); The longitudinal sealing preheating mechanism (600) comprises a longitudinal sealing main board (602) and N groups of preheating modules (608); a rotating arm connecting block (601) is fixed to the right end of the longitudinal sealing main board (602); a longitudinal sealing slide seat A (6061) is installed on the left and right sides of the longitudinal sealing main board (602), a longitudinal sealing cylinder A (6031) is installed on the right end of the longitudinal sealing main board (602), a longitudinal sealing guide shaft A (6051) capable of axially sliding left and right is installed between the two longitudinal sealing slide seats A (6061) via a linear bearing, and the cylinder of the longitudinal sealing cylinder A (6031) The rod is connected to the right end of the longitudinal sealing guide shaft A (6051); a longitudinal sealing slide B (6062) is installed on each of the left and right sides below the longitudinal sealing main board (602); a longitudinal sealing cylinder B (6032) is installed on the left end below the longitudinal sealing main board (602); a longitudinal sealing guide shaft B (6052) that can slide left and right is installed between the two longitudinal sealing slides B (6062) through a linear bearing; the cylinder rod of the longitudinal sealing cylinder B (6032) is connected to the left end of the longitudinal sealing guide shaft B (6052); N preheating module positioning holes are provided at the rear of the longitudinal sealing main board (602); The preheating module (608) comprises a heating block A (6081), a heating block B (6082) and a longitudinal sealing rotating shaft (6084), the heads of the heating blocks A (6081) and B (6082) are embedded with longitudinal sealing heating rods (6083), the waists of the heating blocks A (6081) and B (6082) are both provided with through holes, the tail of the heating block A (6081) is provided with an upper shift fork (60871), and the heating block B (6082) is provided with a longitudinal sealing rotating shaft (6084). A lower shift fork (60872) is provided at the tail of the vertical seal main board (602); the upper shift fork (60871) and the lower shift fork (60872) are provided with a U-shaped shift fork opening with an opening facing forward; the upper and lower shift forks are greater than the thickness of the vertical seal main board (602); the upper shift fork (60871) is located above the vertical seal main board (602), and the lower shift fork (60872) is located below the vertical seal main board (602), and the heating block A (6081) and the heating block B (608 2) the through hole at the waist is aligned with the preheating module positioning hole of the longitudinal sealing main board (602), and the longitudinal sealing rotating shaft (6084) passes through it; the heating block A (6081) and the heating block B (6082) are arranged in a scissor-like manner, and the heating surfaces of the heating block A (6081) and the heating block B (6082) are arranged in a manner facing each other, and an equidistant gap is left between the two heating surfaces; the narrow groove A (210) in front of the longitudinal former front block (207) protrudes from the back of the longitudinal former front block (207) and is close together. The edge seal is placed in the gap between the two heating surfaces; an upper shift fork execution-positioning structure is provided between the longitudinal sealing guide shaft A (6051) and the upper surface of the longitudinal sealing main board (602); a lower shift fork execution-positioning structure is provided between the longitudinal sealing guide shaft B (6052) and the lower surface of the longitudinal sealing main board (602); and the heating block A (6081) and the heating block B (6082) are opened or closed under the drive of the longitudinal sealing cylinder A (6031) and the longitudinal sealing cylinder B (6032); The rotating arm connecting block (601) is hinged to the longitudinal edge sealing rotating shaft (307); The longitudinal sealing shutter mechanism (700) comprises a longitudinal sealing shutter main block (701), a longitudinal sealing shutter auxiliary block (702) and a longitudinal sealing shutter shift fork (704); a shift fork groove (708) passing through the left and right sides is provided at the middle and lower part of the longitudinal sealing shutter main block (701), and a through groove (709) passing through the front and back is provided at the middle position of the right side of the longitudinal sealing shutter main block (701); the longitudinal sealing shutter shift fork (704) is connected to the longitudinal sealing shutter through an axial hole. The structure is provided in the fork groove (708), and a blind hole A (710) is provided on the top surface of the left side of the longitudinal seal shutter fork (704). The bottom surface of the through groove (709) is provided with a blind hole B (711) aligned with the blind hole A (710) in the vertical direction. A shutter compression spring (707) is embedded between the blind hole A (710) and the blind hole B (711). Under the action of the shutter compression spring (707), The right end of the longitudinal seal shutter fork (704) is kept in a raised position; a wedge block (712) is provided on the left side of the longitudinal seal shutter auxiliary block (702); a groove (713) is provided at the bottom of the wedge block (712); the height of the wedge block (712) is consistent with the height of the through groove (709) on the right side of the longitudinal seal shutter main block (701); a longitudinal seal shutter is installed in front of the longitudinal seal shutter auxiliary block (702). The longitudinal sealing shutter locking block (703) is provided with a protruding baffle (714) on the rear side of the longitudinal sealing shutter locking block (703), a screw is fixed on the rear side of the protruding baffle (714), a rubber baffle (705) is provided on the screw, the rubber baffle (705) is in close contact with the front of the longitudinal sealing shutter main block (701), and the longitudinal sealing shutter main block (701) is flush with the front of the longitudinal sealing shutter auxiliary block (702); The longitudinal seal shutter main block (701) is connected to the shaft head at the front end of the longitudinal seal guide shaft A (3051) via a shaft hole; the longitudinal seal shutter auxiliary block (702) is fixedly connected to the left end of the longitudinal seal main board (602); The longitudinal sealing mechanism (800) comprises roller connecting blocks (801) fixed at both ends of the longitudinal sealing back plate (102), a longitudinal sealing bar (804) is connected between the roller connecting blocks (801) at both ends, the longitudinal sealing bar (804) is located at the lower end of the former of the longitudinal sealing forming mechanism (200), a roller adjusting block (802) is provided between the longitudinal sealing bar (804) and the roller connecting blocks (801), and N pressure roller groups are installed on the longitudinal sealing bar (804); The pressing roller group includes a film pressing block (805) and a longitudinal film pressing axis A (8031) and a longitudinal film pressing axis B (8032) which are parallel to each other. The longitudinal film pressing axis A (8031) passes through the front and rear of the longitudinal sealing bar (804) through a circular bearing hole (813) provided on the longitudinal sealing bar (804). The longitudinal film pressing axis B (8032) passes through the front and rear of the longitudinal sealing bar (804) through a long hole A (814) provided on the longitudinal sealing bar (804). The longitudinal sealing bar (804) is provided with a long hole B (812) which is perpendicular to the long hole A (814) and passes through the longitudinal sealing bar (804) from top to bottom. A pin hole (815) is provided in front of the longitudinal sealing bar (804) and below the longitudinal sealing film pressing shaft B (8032). The upper part of the film pressing block (805) is provided with an axial hole which is clearance-matched with the longitudinal sealing film pressing shaft B (8032). The lower part of the film pressing block (805) is provided with a through hole. The film pressing block (805) is passed through the upper through hole. The longitudinal film-sealing and film-pressing shaft A (8031) and the longitudinal film-sealing and film-pressing shaft B (8032) are assembled on the longitudinal film-sealing and film-pressing shaft B (8032). At the same time, a film-pressing rotating shaft (809) is installed in the through hole and the pin hole (815) at the bottom of the film-pressing block (805), so that the film-pressing block (805) is hinged to the long hole B (812) through the film-pressing rotating shaft (809); the front and rear ends of the longitudinal film-sealing and film-pressing shaft A (8031) and the longitudinal film-sealing and film-pressing shaft B (8032) are respectively provided with a bearing group consisting of two bearings (810), and the outer ends of the group of bearings (810) at the rear end are respectively provided with A film pressing shaft stop sleeve (811) is provided to make the positions of the two groups of bearings flush front and back; a film pressing positioning block (806) is provided at the bottom of the longitudinal sealing and closing bar (804); an adjusting bolt (807) is provided between the film pressing positioning block (806) and the lower part of the film pressing block (805); a film pressing spring (808) is provided on the adjusting bolt (807); the adjusting bolt (807) is rotated to make the two groups of bearings (810) of the longitudinal sealing and film pressing shaft A (8031) and the longitudinal sealing and film pressing shaft B (8032) close to each other; The tangent lines of the N groups of bearings (810) at the rear end of the N groups of rollers are aligned with the symmetry lines of the narrow grooves A (210) in front of the former blocks (207) of the N formers; The longitudinal edge sealing guide mechanism (400) comprises brackets (450) respectively fixed at the front ends of two roller connecting blocks (801); a longitudinal sealing guide connecting plate (401) is connected between the two brackets (450); the longitudinal sealing guide connecting plate (401) is located below the longitudinal sealing mechanism (800); N guide retaining rings (402) are fixed on the longitudinal sealing guide connecting plate (401); the guide retaining rings (402) are arc-shaped retaining rings; the N guide retaining rings (402) respectively wrap around N feeding tubes (204) to press down the sealed back edge to make it stick to the tubular packaging film; The film guide roller mechanism (500) comprises a roller beam (505) fixed between two brackets (450), the roller beam (505) is located below the longitudinal edge sealing guide mechanism (400), the roller beam (505) is provided with N groups of longitudinal edge sealing roller groups, the longitudinal edge sealing roller groups include two linear bearings (503) passing through the roller beam (505), the linear bearings (503) are provided with longitudinal edge sealing roller guide shafts (507), the front ends of the two longitudinal edge sealing roller guide shafts (507) are fixedly connected with A roller tensioning block (506), the rear ends of the two longitudinal sealing roller guide shafts (507) are provided with a longitudinal sealing roller seat (502), a longitudinal sealing roller (501) is arranged inside the longitudinal sealing roller seat (502), a roller spring (504) is sleeved on the longitudinal sealing roller guide shaft (507) between the longitudinal sealing roller seat (502) and the roller cross beam (505), the outer rotating surface of the longitudinal sealing roller (501) is an inner concave arc surface, and the inner concave arc surface is consistent with the outer rotating surface of the discharge pipe (204).

2. The preheating and sealing device for a multi-row packaging machine according to claim 1, characterized in that: On the top of the longitudinal sealing main board (602), the longitudinal sealing guide shaft A (6051) passes through the U-shaped fork openings of all the upper forks (60871) of the N groups of preheating modules (608); the upper fork execution-positioning structure comprises a longitudinal sealing left retaining ring (6091) and a longitudinal sealing right retaining ring (6092) respectively fixed on the longitudinal sealing guide shaft A (6051) and located on the left and right sides of the upper fork (60871); a longitudinal sealing compression spring (610) is provided between the upper fork (60871) and the longitudinal sealing left retaining ring (6091); the upper fork (60871) and the longitudinal sealing right retaining ring (6092) are kept in contact; an L-shaped longitudinal sealing positioning plate (607) is installed on the top of the longitudinal sealing main board (602) and on the right side of the upper fork (60871); Below the longitudinal sealing main board (602): the longitudinal sealing guide shaft B (6052) passes through the U-shaped fork openings of all the lower forks (60872) of the N groups of preheating modules (608); the lower fork execution-positioning structure includes a longitudinal sealing left retaining ring (6091) and a longitudinal sealing right retaining ring (6092) respectively fixed on the longitudinal sealing guide shaft B (6052) and located on the left and right sides of the lower fork (60872); a longitudinal sealing compression spring (610) is provided between the lower fork (60872) and the longitudinal sealing right retaining ring (6092); the lower fork (60872) and the longitudinal sealing left retaining ring (6091) are kept in contact; an L-shaped longitudinal sealing positioning plate (607) is installed below the longitudinal sealing main board (602) and on the left side of the lower fork (60872).

3. The preheating and sealing device for a multi-row packaging machine according to claim 2, characterized in that: The axial position of the longitudinal sealing left retaining ring (6091) relative to the longitudinal sealing guide shaft A (6051) is adjustable, and the longitudinal sealing compression spring (610) is placed in a compressed state by adjusting the position of the longitudinal sealing left retaining ring (6091).

4. The preheating and sealing device for a multi-row packaging machine according to claim 1, characterized in that: The upper and lower ends of the longitudinal sealing rotating shaft (6084) are respectively provided with a longitudinal rotating shaft sleeve (6805) and a longitudinal sealing baffle (6086).

5. The preheating and sealing device for a multi-row packaging machine according to claim 1, characterized in that: The rotating arm connecting block (601) is sleeved on the longitudinal edge sealing rotating shaft (307) in the remote longitudinal sealing mechanism (300), and a self-lubricating shaft sleeve (308) is provided between the longitudinal edge sealing rotating shaft (307) and the rotating arm connecting block (601).

6. The preheating and sealing device for a multi-row packaging machine according to claim 1, characterized in that: The longitudinal sealing shutter main block (701) is provided with two axial holes along the front-to-back direction, which are respectively aligned with the positions of the two longitudinal sealing guide shafts A (3051) in the remote longitudinal sealing mechanism (300); the left end of the longitudinal sealing main board (602) is provided with two connecting holes for connecting the longitudinal sealing shutter mechanism (700); the longitudinal sealing shutter auxiliary block (702) is provided with a through hole aligned with the positions of the two connecting holes on the left end of the longitudinal sealing main board (602); the longitudinal sealing shutter auxiliary block (702) and the longitudinal sealing main board (602) are fixed by bolts.

7. The preheating and sealing device for a multi-row packaging machine according to claim 1, characterized in that: In the pressing roller group, the screw diameter of the adjusting bolt (807) is the same as the inner diameter of the film pressing spring (808), and the tail end of the adjusting bolt (807) is provided with a shoulder (8071), one end of the film pressing spring (808) abuts against the shoulder (8071), and the other end of the film pressing spring (808) abuts against the side of the film pressing block (805).

8. The preheating and sealing device for a multi-row packaging machine according to claim 1, characterized in that: In the longitudinal sealing mechanism, a group of bearings (810) located at the rear side of the longitudinal sealing bar (804) is located in front of a feed tube (204) extending from the bottom of a longitudinally through cylindrical channel formed by embracing and assembling the former front block (207) and the former rear block (208), and is arranged symmetrically with respect to the position of the narrow groove A (210) in front of the former front block (207), so that the longitudinal sealing edge of the packaging bag after wrapping the feed tube (204) is sandwiched between the two bearings (810) in the group.

9. The preheating and sealing device for a multi-row packaging machine according to claim 1, characterized in that: In the N groups of longitudinal sealing and pressing rollers, the outer rotating surface of the longitudinal sealing and pressing roller (501) is coaxial with the outer rotating surface of the N feeding tubes (204).

Images