TWI295984B - Forming unit for producing sealed packages from a tube of sheet packaging material filled with a pourable food product - Google Patents

Description

1295984 (1) 玖, description of the invention (invention description should be stated: the technical field, prior art, content, embodiment and kitchen description of the invention) TECHNICAL FIELD The present invention relates to a forming unit for filling a pourable food product Sheet packaging material tube production sealed package ^ Prior art As is well known, many pourable foods, such as juice, sterile or ultra-high temperature treatment (UHT) of milk, wine, Fan% Shi Bo ° 杳 汴 汴 ,, all It is sold in packaging made from sputum flakes. It is used to store liquids or it can be known as Tetra Brik Aseptic (a typical example of a package for laminating packaging materials, a parallelepiped package for dumping food, a weekly trademark). The seal is made of a long length. Fu consists of a layer of paper covered with a multi-layer heat-sealing plastic material (such as, take, the material, in the Kenting I such as polyethylene). The seedlings of products (like UHT milk) are now used for long-term “································································· The inner surface of the glue is then applied to the inner surface. Most, ', become the public packaging and food as is well known, this type of packaging is ~ Shiyi completely self-reported on the machine a continuous tube is made from the Le packaging machine, κ duck sheet recognition is more clear, the long The sheet is made of packaging material.

The policy material is jpA and is loosened out through a sterilization chamber of the packaging machine at the end of a roll, using a bactericide, such as peroxidation ^°, in the child sterilization room, borrowed as 'package 铋Wei later evaporates by heating; and / cloth - 4 poisons, fungicides 4 hunting with appropriate 沧 s to illuminate the packaging material, to eliminate the main 'K and intensity of radiation

兮 而 该 长 长 长 长 长 长 长 长 长 -7 -7 -7 -7 -7 -7 -7 -7 -7 -7 295 295 295 295 295 295 295 295 295 295 295 295 295 295 295 295 295 295 295 295 295 295 295 295 295 295 295 295 295 295 295 295 Sealing 'to form a continuous tube of known style... Two packaging material tubes (actually, {extension of the sterilization chamber) are in the vertical direction: 丄 'Continue to feed 'filled with food that has been sterilized or sterilized It is passed through a forming unit to make individual packages. The single piece includes two pairs of jaws, which are continuously and continuously applied to the packaging material tube, and the tube is clamped and heat-sealed on the equally spaced cross section, and is formed into a continuous strip of pillow-shaped packaging. The individual transverse seals (i.e., the extensions are oriented perpendicular to the direction in which the tubes are fed) are interconnected. The pillow packs are separated by cutting individual transverse seals and then fed to a folding station where they are machined into a completed parallelepiped shape. The tube portion held between each pair of jaws is heat sealed by a heating device; the heating device is carried on one of the jaws and used for local melting and clamping between the jaws Two-layer heat-sealing plastic material ^

Once the heat sealing operation is completed, the cutting member carried by the clamp is activated and interacts with the packaging material tube to cut along the center line of the transverse sealing strip, thereby cutting a pillow-shaped packaging from the bottom end of the packaging material tube. . The bottom end is transversely sealed. The two clamps are opened when they reach the bottom dead center position to avoid disturbing the top of the tube; and at the same time, the other two clamps are activated in exactly the same way, from one top. The dead point moves downward to repeat the above-mentioned work of clamping/forming, sealing, and cutting. The problems associated with the forming unit are necessarily related to the so-called "modification correction" system. That is, in normal case, the packaging material of the long sheet is finally the outer surface portion of the continuation package of the I295984 (3) invention, including a series of equally spaced printed images or decorations, so the long sheet material must The forming unit is fed in such a manner that the continuous enamel ornament is aligned in accordance with the forming, sealing, cutting, and the like of the package. On the matter of K, the decoration is printed at equal intervals, and the position of each ornament relative to the shape of the upper jaw is changed. One is caused by the mechanical pressure exerted on the packaging material by the clamp. The different deformations of the packaging material, one is due to the pulsating pressure of the pourable food in the tube of the packaging material, therefore the 'requirement of the decorative position correction system' because, for the operation of the packaging machine at the skillful output speed Even if the ornament is slightly deviated from the theoretical alignment, if it is not corrected immediately, it will eventually rise to an unacceptable package that must be discarded. In the case of modern packaging machines, such a system includes an optical sensor for detecting a mark (such as a bar code), a pouring hole, which is repeated at regular intervals on the long sheet of packaging material. Or a folding line, and finally the filling tube; and a control unit for comparing the position of the detected mark position with respect to the theory. In some commercial machines, each jaw has two traction members for applying a downward pulling force on opposite sides of the tube of packaging material, and the two traction members are movably mounted to each pair. A slap in the shackle is placed on the top corner 隅 and the bottom corner of the pillow package to form a rectangular sheet. At the time of Chad's bit error I, the control unit adjusts the horse speed of the long-sheet packaging material. If this correction is not sufficient, the traction member can be controlled to slightly increase or decrease the tension of the packaging material -9-(4) 1295984. In another solution, the indexing member does not have to adjust the length of the control; and the operation is repeated again and again. For example, as illustrated by the Applicant, the two traction members are fitted to the two jaws in the respective cams and associated cam follower clocks. And in the specific case illustrated by _, in a manner that can be moved in the axial direction, parallel to the joint arm to be made at the end of the packaging material # is connected to the associated cam from the gravity of the articulated arm to the two Holding? The member moves toward the two traction members so that the packaging material can be more or less grasped at the position of the jaw. Each of the cams is laterally fixed to an associated jaw and can be stretched in a direction perpendicular to the package, primarily in the straightening direction. The movement of the cams towards the associated jaws produces a larger or smaller dynamic and smaller rotation of the lever, and thus corresponds to a smaller pulling force. The read control unit directly acts on the speed of the motor feeding the piece of packaging material until the garnish and the theoretical position of the double 颚 clip in the Italian Patent No. 1296062 is moved by a phase interaction, the former In an adjustable structure, the latter is connected to the two traction members in a rocking manner. The mechanism includes an actuating lever that is attached to the transverse sealing strip on the jaw tube in which the two traction members are mounted, and on the other end. In actual use, the shafts of the rods rotate toward each other or downward, and thus the horizontal surface of the vertical tube feeding path of the forming unit support structure of the pair of decorative objects is adjusted and has a beginning of a slope shape. The greater or lesser the degree of movement, the greater the extent to which the two traction members act on the packaging material tube or

• 1Ό - 1295984 Describing to the continuation (5) The device is guided by a related continuous straight line: the latter is fitted to the forming unit. The system control unit is activated. A fairly accurate decoration is corrected for two pairs of positions, the linear urging member being clamped to the minimum and maximum proximity. Regarding the minimum proximity of the clip, there will still be some interaction and momentum. Cause thousands of questions; In particular, when the two pairs of jaws in the forming unit are emptied and are a more significant amount of interaction than the minimum proximity of the tube with the pourable jaws, it is not difficult (I and The sterilized state is weakened. The action of each cam is controlled by the transmission moving member (ie, a pneumatic cylinder), and the decoration is corrected to obtain a tube with the packaging material during the forming process. The maximum stroke of the interactive clip, and therefore the motion between the cams and positions, must be limited, even between the cams and the opposing cams and the associated cam followers. The minimum of the traction member, which may be moved when the packaging machine is started, the sterilized packaging material tube is fed between, normal when it is flat, and the food is wider. Therefore 'even in the relative wheel, in two There is still a packaging material for the flat tube containing the food between the traction members, which is the damage caused by the traction member. Therefore, the invention aims to provide a forming unit in the first embodiment. For packaging made of packaging material tube filled with tiltable ^ ^ ^ ^ ^ 〒 ^ sealed packaging, and designed to avoid the typical association of the known unit missing. The present invention, a forming unit, eight. Controlled by ~Packaging Materials ^' as claimed in claim 1 of the scope of the patent application. (6)^95984 Description of the Invention Continued The present invention also relates to a method from a package, such as households & $ y - The material tube is manufactured as a sealed package, as in the case of claim 8 of the scope of the patent application. A comparatively non-limiting example of the invention and a reference to the accompanying drawings are described. In Fig. 1, the numeral i indicates that the whole - _ packaging loose / early element 'is used to manufacture the sealed package 2 from a sheet of lacquers 3; the ^ _ _ & 1 package 2 has an axis A, filled with pourable food, and fed along a parallel path with a parallel path of fm ^ ^ ^ ^ A. More aptly, the child 3 system is made of a known method. In the longitudinal direction, "the firefly and the poor seal of a long sheet of packaging glory into the tremble, and from the unit 1 countercurrent irrigation Packed food. Hierarchical structure (not shown), and the material is covered on both sides of the surface. It is used for long-term storage products (such as the long-term sheet packaging material is suitable, including a layer Secondary paper layer heat-sealing plastic materials, such as polyethyl hydrazine

For the aseptic packaging of UHT^milk), the packaging material consists of an oxygen barrier material defined by the aluminum of the sheet, superimposed on a layer of heat-sealed plastic material, and then covered with another layer of heat-sealed plastic material, the latter layer The boundary is the inner side surface of the package 2 in contact with the food. a long sheet of sheet material, having a continuous image or ornament (not shown) on the side that is ultimately defined as the outer surface of the package 2, repeating the beta unit 1 at regular intervals with a set distance. The support structure 4' defines two vertical guides 5 which are arranged at a position symmetrical with respect to a central vertical longitudinal plane μ of the unit i, and the axes of the two guides, In the case of a central unit of the unit 1-12-1295984 (7) - the description of the continuation of the straight plane τ, 'then' axis A defines the intersection of the plane Μ and T. The unit 1 includes two forming assemblies 6, 6 in a known manner, and can be swayed along the respective guide members in the vertical direction, and thus moved along the portion of the path ρ; and the two forming assemblies 6 6, the low office from the % rotation and the packaging material tube 3 interaction to clamp and heat seal the cross section of the tube. Since the forming is pure and the 疋 is symmetrical to the plane Μ, only one of the figures 2 to 8 (forming assembly 6) is known as Weng-) 砰,·, Tian Xian, and is explained below; and the forming assembly 6 The corresponding parts of 6, and the flat _ _ 士 μ m are denoted by the same reference numerals in Fig. 1. As shown in Figures 1 and 2, the forming assembly 6 generally includes a slider 7, which is moved along the respective guides, and the two jaws "' are ribbed at the bottom to the slider 7, hinged, 尧. The respective horizontal axis B of the spoon rotates and is symmetrical with respect to the plane so that i can be roughly opened and closed like a "book style". The reciprocating motion of the slider 7 and the jaws ", the opening and closing action of the ribs are controlled by a pair of stupid straight rods (not shown) in a known manner, and will not be described here, the vertical rods are rotated again. More specifically, the jaws 8a, 8b comprise a main control body 10 which is substantially in the shape of a quadrilateral plate, with the working plane V of the respective axis 8 along the jaws 8a, 8b. (Fig. 2) stretching, and the main control body ι is hinged to the slider 7 near its bottom edge, and has a respective control arm 离 from the surface of the main control body 1 离 from the surface V Extending outwardly, and being activated by one of the vertical round rods in a known manner that is not known. The rhymes 8a, 8b also include respective support arms 12 that are fixed to the top end of the respective main control body 1' And in a direction parallel to the respective axis B and substantially in the direction of the respective working plane V, the plane Μ protrudes beyond the plane M, so that in 1295984 ___ (8) the invention continuation page opposite sides of the tube 3. The clips 8a, 8b support the protruding portion of the arm 12' with individual rod-shaped Body 13 (Figs. 1-4 and 8), the secondary body 13 is in turn provided with a respective sealing member 14 (shown in phantom in Figure 2) that interacts with the tube 3; and, for example, it can be defined as a sensor For generating an electric current in the aluminum layer of the packaging material, melting the thermoplastic layer by Joule-effect; and defining it as a viewing to provide the clamping tube 3 to a desired pressure The back pressures 8a, 8b are movable between a closed position and a fully open position; in the closed position the respective two sealing members 14 hold the tube ^ in the transverse sealing stage 'the tube 3 is at equal intervals The cross-section is heat-sealed to form the respective sealing strips 15 臂 clips 8a, 8b on the respective sub-body 13 of the arm 12, and is provided with a mold case 16 or a so-called "capacity box" for controlling the production The volume of the package 2 in the middle is only shown in FIGS. 1 and 2 and is only slightly described within the scope necessary for a clear understanding of the present invention. More specifically, the formwork 16 is hinged to the arms 12 of the individual panels 8b, hinged about the axis c parallel to the axis b, and is known by means of a known elastic device (not shown). Maintaining a given position on the arm 12. The form 16 has a C-shaped cross section with the opening open at the front and, after the sealing member 14 is transversely sealed, 'cooperating with each other to define a cavity of a given shape and volume, enclosing the tube 3, making it into- The configuration of a rectangular cross section. This forming stage produces a pillow pack 2 having a main portion 2〇 having a shape and capacity corresponding to the finished package' and a transition portion 21 defined by two I-triangle surfaces 22 and connecting the main portion 2〇 to Individual Neighbors-14- Invention Description Continued Page 1295984 (7) Sealing strip 15. The forming assembly 6 further includes a means 23 for adjusting the position of the ornament on the tube 3 of the packaging material relative to the jaws 8a, 8b such that the ornament is properly disposed on the outside surface of the package 2 from the unit 1.

The device 23 generally includes two traction members 25 movably fitted to one of the jaws 8a, 8b (8a) for applying a pulling force to the tube 3 of the packaging material in the direction of the path p; The cam assembly % is adjusted, and at the path P - given station 27, the two traction members 25 are actuated and used to adjust the stroke of the two traction members 25 to control the longitudinal feed of the tubes 3 through the unit turns. The two traction members 25 are provided on both sides of the tube 3 and adjacent to the tube 3, and are symmetrical with respect to the shaft, 'spring A. More specifically, the two traction members are (Fig. 2 and include: each of the scooping locks 28, which are fixed in the axial direction and rotatably, and are fitted through the respective through holes formed in the W body 13 of the sturdy body, And having an axis D perpendicular to the flat V' and the respective vanes 29, eccentrically | attached to the pin 28 and joined to the pin 28' and the respective vanes 29 interact with the tube 3 of the packaging material.

More specifically, the vanes 29 project toward the tube 3 from one end of the respective pin 28 and are projecting from the arms 12 of the associated clip 8a on the same side and above the associated sealing member 14 (Fig. 2), and curved in such a manner that the concave side thereof faces the tube 3 while the cross section gradually becomes smaller toward the tube 3. 3 and 4, the cam assembly 26 includes: a cam 30 fixed to the upright post 31 of the support structure 4 and extending mainly in a vertical direction, having an initial portion in a slope shape; and a cam follower 32, fitted to the jaw 8a, attached to the traction member 25, and when the forming assembly 6 is moved along the associated guide 5 (and thus along the path P), cooperates with the cam 30 in a sliding manner so as to be in a vertical direction - 15-Description of Inventions Continuation 1295984 (10) Path P and plane Μ, and parallel jaws "The X direction of the extension of the arm 12 is pushed by the cam 30. As will be explained later, the two traction members 25 are By a mechanism 32 connected to the cam follower 32, the mechanism converts the movement of the cam follower 32 in the X direction into an equal and opposite rotation of the traction members 25 about their respective axes D, thus making the two blades 29 symmetrical The cam 30 is moved by a contoured projection formed on the side of a vertical parallelepiped block 34. The block 34 is fixed to the upright post 3 1 and can be perpendicular to the path. Move on the horizontal plane of P, to adjust cam 30 in the X direction The position of the movement of the block 34 and thus the movement of the cam 30 along the > plane is controlled by the hydraulically actuated linear actuator 36 assembled to the support structure 4 via the mechanism 35. In the example shown, The actuator 36 is defined by two two-position pneumatic cylinders 37a, 37b. The two gas cylinders are arranged in series to be coaxial with an axis X of the vertical X direction and the axis a and are not placed in the mechanism. 3 5 and a fixing member 38; the fixing member 38 and the supporting structure 4 are integrated as a whole. More specifically, the air pressure: the cylinders 37a, 37b have respective cylinder sleeves 39, and the head and tail are fixedly connected, and their respective The piston slides inside the cylinder liner, and the connecting rods 4 (^ and 40b of the piston extend from opposite ends of the cylinder casing 39, and are respectively connected to the mechanism 35 and the fixing member 38. Block 34, on which the cam 30 is formed The support is between two top plates 41a and a bottom plate 41b, respectively, and the latter two are firmly fixed on the upright column 31 and protrude from the portion. -16- 1295984 The mechanism includes a horizontal L-shaped lever 42 having one end hingedly connected to the associated pneumatic cylinder 37a One end of the 捍40a is extended, and the other end is integrally fixed to the top end of a vertical round rod 43. The bottom end of the vertical round rod 43 is axially fixed and rotatably passed through the flat plate 41a and a cylindrical member. Integrated into an eccentric position, the cylindrical member 44 is erected to rotate a central vertical base in the interior of the block 34. Therefore, one of the links 牝a, 4〇b of the pneumatic cylinder 37 Movement causes the vertical round bar 43 to rotate about its axis, and thus, the eccentric connection of the round bar 43 and the block 34, the cam 3〇 has a component in the other direction and moves along the horizontal plane. The leaf spring 45 extends vertically on one side of the block 34 and has one end fixed to the flat plate 41a, and an opposite free end which is elastically pressed against the side of the block 34 opposite to the & Block 34 is at a predetermined angular position for the cylindrical member 44. The actuator 36 is designed to have three different operating positions along the axis E for the projecting end of the connecting rod 40a with respect to the fixed member 38, and the three positions correspond to three different angular positions of the round bar 43, and the cam 3〇 Three possible settings in the X direction. Alternatively, the actuator 36 can be defined by a pneumatic, so-called "multi-step" cylinder that has the ability to have three different operating positions for its output member. According to another possible embodiment, the driver 36 can be defined by a powered cylinder that defines a plurality of different operating positions. As shown in Figures 3, 4, 6 and 7, the cam follower 32 is defined by a rocker lever; the rocker lever has a middle portion 5〇 that is circumferentially perpendicular to the axis A and direction The rotation of the axis F of X is connected to a support member -17- 1295984 ___ (12). The continuation page 51, the support member 51 is firmly fixed to the main control body 10 of the 8 clip 8a, and is connected from the associated arm 12 Extending from the other side of the extended side; a first end portion 52 fitted with an idler technique, cooperates with the cam 30 in a rolling manner; and the second end portion 54 of the pair is connected by a mechanism 33 To the two traction members 25^ more specifically, the cam followers 32 project from the support members 51, substantially in the vertical direction. The intermediate portion 50 of the cam follower 32 is preferably coupled to the support member 51 by a toggle mechanism 55 that is engaged with the cam follower 32, and the toggle mechanism 55 is also attached to the support member 51. The actuator 56 can be moved between the maximum length of the extended configuration (Figs. 3 and 6) and the minimum length of the retracted configuration (Figs. 4 and 7); in the extended configuration, the cam follower 32 is retained In an I mode of operation (i.e., in cooperation with the cam 30), while in the retracted configuration, the cam follower 32 remains in an inactive configuration (i.e., separate from the cam). In the illustrated example (Figs. 6 and 7), the actuator 56 is defined by a pneumatic cylinder and includes a cylinder liner 57 secured to the support member 51 and extending from the support member 51 with its axis parallel axis A. And a movable member %, erected to slide axially in the cylinder liner" and having one end portion extending from the cylinder sleeve 57, connected to the toggle mechanism 55. The toggle mechanism 55 includes two levers 6〇, 61 In the extended configuration, perpendicular to the movable member 58 and substantially parallel to the direction X, and having adjacent ends connected to each other by a hinge and connected to the movable member 58, and the other ends thereof are respectively hinged to the support祙 is the π μ piece 51 and the intermediate portion 50 of the cam follower 32. The movable member 8 疋 is in a retracted position from the forward position (10) 3 and 6) of the maximum lead of the cylinder liner 57 and the minimum extension of the - k cylinder sleeve 57. (Figs. 3 and 6) is active; in the case of -18-1295984 _ (13) I, the continuation position 'the toggle mechanism 55 remains in the extended configuration, corresponding to the working form of the cam follower 32; In the retracted position, the toggle mechanism 55 remains in the retracted configuration, corresponding to the cam follower 32 In particular, with reference to Figures 6, 7, and 8, the mechanism 33 includes a round rod 65 that is axially slidable within the elongated base of the arm 12 of the jaw 8a and has a head portion from the end The base extends and is hingedly connected to the end portion 54 of the cam follower 32; a transmission mechanism 67 is received in a chamber 68 in the sub-body 13 of the jaw 8a to communicate with the upper base, and It is disposed between the round rod 65 and the pin 28 of the two traction members 25. More specifically, the transmission mechanism 67 includes a plate-shaped lever 70 integrally fixed to the round rod 65 opposite to (the hinge is connected to the cam follower The end of one end of 32 can be moved in the chamber 68, in a direction parallel to the direction X, and the round rod 65, and define two connecting portions 71, 72, which are the starting traction. The members 25 are hingedly connected to the two portions and are fitted to the respective pins 28 to project radially from the pins 28. More specifically, the lever 70 projects along a plane parallel to the plane V. And forming different angles with the two arms 73, 74, so that the linear movement of the round rod 65 in the X direction, The two traction members 25 rotate in opposite directions about respective axes D. The unit 1 is controlled by a known electronic central control unit 75 (shown schematically in Figure 1), which borrows one or more The optical sensor 76 (also shown schematically in Figure 1) determines that the final position of the ornament on the packaging material of the package 2 will be compared, the true position and the theoretical reference position, and the appropriate forming assemblies 6 The 6's actuator 3 is adjusted to the position of the cam 3〇 in the direction of the continuation page of the invention (14) 1295984, and the tension to be applied by the two traction members 25. The age of the young man is set to 11 yuan 75 and can also command the actuator 56, % a two pairs of clips 8a, flutter, the hunting aid related to the toggle mechanism 55, in the work and the code called the shape % < Each of the cam followers 32.

More specifically, in the case of unit 1 A # # W, the movable member of each of the actuators 56: 8疋 is held at the forward position / m summer' to make each cam 30 and the associated cam member j2 It is possible to have mutual gravity, so that the two traction members 25 can be operated.

Conversely, when the single-opening u, the temple's movable member 58 of each of the actuators 56 is held in the retracted position, between the respective cams 3〇 and the associated cam followers 3, and thus in two There is any interaction between the tow, the cattle 25 and the packaging material 2 fed along the path P). Finally, the movable furnace of each actuator 56 is α ^ ^ π4. J auxiliary element: >8, in the normal state, it is set in the retreat position (Figs. 4 and 7), but by φ stop « central control of the drought element 75 pushes the forward position to activate the actuator 56. Another way, % of the movable member of each actuator, normal

At the time of the advancement, the central control unit is pushed into the retracted position, and the trigger 56 is activated, and in the actual use, the clamps 8a of the forming assemblies 6, 6 are thrown when the assembly is lowered. Closed to hold the officer 3 with a downward vertical motion component equal to the speed of travel of the tube 3. More specifically, the 颚 仏 and 讣 of each of the forming assemblies 6, 6 are led together to gradually deform the tube 3, and "make it flat" at a cross section or a horizontal strip: at this moment The sealing member 14 seals the two overlapping portions of the packaging material into a flat horizontal strip. Near the forming assemblies 6, 6 and the bottom dead center position of the downward stroke, the clip -20· 1295984 (15) Illustrated continuation pages 8a, 8b open to release the tube 3, and move upwards, And fully open before reaching the top dead center position of the upward motion. At this moment, the two rhymes 8a, 8b begin to close and are fully closed before they begin to move downward. The movement of the two forming assemblies 6, 6' is apparently staggered by half the cycle. · The forming assembly 6 with the open jaws while the forming assembly 6' is moved downward with the closed jaws 8a, 8b 8a, 8b act upwards so that interference can be avoided. When the unit 1 is stably operated, the movable member 58 of the deflector 56 of each jaw 8a is set at the advanced position (Figs. 3 and 6), and at this time, the associated toggle mechanism 55 is held in the extended configuration. The associated cam follower 32 is maintained in a working configuration. When the forming assemblies 6, 6 are moved downward, the roller post 53 of the cam follower 32 of the associated jaw 8a contacts the initial ramp portion of the associated cam 30k (Fig. 3), which causes the X direction The tip portion 52 is turned toward the jaw 8a. Thus, the cam follower 32 rotates about the axis F, which is connected to the associated loss 8a by a hinge about the axis F, thus moving the end portion 54 away from the jaw 8a in the weir direction, and in the same direction Pull up the round rod μ. As indicated by the arrows in Fig. 8, by means of the two arms 73 and 74, the linear movement of the round rod 65 in the above-mentioned X direction causes the two traction mechanisms 25 to relatively rotate, and applies a predetermined pulling force downward in the packaging material. On tube 3. When there is any difference between the actual and reference position of the ornament, the central control unit 75 will command the % of the actuators 6, 6 to adjust the position of the associated cam 30 on X and adjust accordingly. The pulling force exerted on the tube 3 by the associated traction member. More specifically, the activation of the actuator 36 causes the round rod 43 to rotate about its axis such that an eccentric connection between the round rod 43 and the block 34, the cam 3〇, is provided at -21 ^ 1295984 (16) |^ Explain that the $^ direction of the water + surface moves, containing the required components. The above operation, i®, is repeated until the actual position of the ornament matches the position of the reference. When the field starts the unit 1 '? The movable member 58 of the damper 56 is set in the retracted position (Figs. 4 and 7)' corresponding to the retracted configuration of the toggle mechanism 55 and the incompetent configuration of the associated cam follower 32. When the assemblies 6, 6 are moved downward, any interaction between the cam follower 32 and the associated cam 30' itb & f is such that the two traction members 25 remain in space. Any interference between the two traction members 25 and the empty tubes 3 of the packaging material fed along the path p can therefore be avoided, thus eliminating the tube, any damage or reducing the risk of disinfection. Obviously, there may be many changes to the unit described herein without departing from the scope of the patent application. In particular, unit 1 may comprise two series of jaws 8a and 8b as part of a chain conveyor defining respective endless jaw paths, extending on opposite sides of the tube 3 feed path and cooperating with each other. . If this is the case, each of the forming assemblies 6, 6' will be defined by a clamp of one of the two transporters and a corresponding clamp of the other transporter. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 and FIG. 2 respectively show a front view and a side view of a forming unit according to the present invention, which is used to manufacture a tube of packaging material. Sealed package for dumping food; Figures 3 and 4 show π (removal of several parts for clarity) -22- 1295984 of the forming unit of Fig.-] Description of the continuation page One sealing jaw and one decorative correction device are different FIG. 5 shows a cross-sectional view of the horizontal plane VV of FIG. 3; FIGS. 6 and 7 respectively show a detailed large-scale side view of the forming unit in the operational modes of FIGS. 3 and 4; 8 shows a large scale cross-sectional view of a portion of the sealing jaw of Figures 3 and 4; several components have been removed for clarity. (forming) unit (sealed or pillow) packaging tube support structure guide forming assembly (or clamping device) slider diagram symbolic description 1 2 3 4 5 6, 6’ 7

8a, 8b 颚 10 main control body 11 control arm 12 support arm 13 secondary body 14 sealing member 15 sealing strip 16 form 20 main part -23 1295984 description of the invention continuation page (18) 21 transition part 22 triangular surface 23 adjustment device 25 Traction member (or device) 26 Cam assembly 27 Station 28 Pin 29 Blade 30 Cam or first interaction device 31 Upright column or support device 32 1 Cam follower or second interaction device 33 Mechanism (transmission) 34 Square 35 Mechanism 36, 56 Actuator 37a, 37b Two-position pneumatic cylinder 38 Fixing member 39, 57 Cylinder liner 40a, 40b, 43 Round rod 41a, 41b Flat plate 42, 60, 61, 70 Lever 44 Cylindrical member 45 Leaf spring 50 Middle SECTION 1295984 (19) DESCRIPTION OF THE INVENTION Continuation 51 52, 54 53 55 56 58 67 68 71,72 73, 74 75 76 A, B, C, D, E, F, G Μ GTVX, 支撑 The end of the support is partially inert Roller priming device (or toggle mechanism) priming device (or ejector) movable (or output) member transmission mechanism chamber connection part arm central control unit optical sensor axis central vertical longitudinal plane Ways to the central vertical cross-plane direction of the work plane

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Claims (1)

1295984 Patent application No. 092102537 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ a sealed packaging (2) made of a sheet packaging material fed along a feeding route (p), filled with a pourable food, and having a continuous equidistant decoration; (2); ) comprising two jaws (6, a portion along the path (P) for cyclical movement, at equal intervals defining the package (2) at the cross section of the opposite sealing strip (15), clamping and Six 1 = ) ' used to trim the decoration The adjustment device (23) comprises a packaging material (3) and includes an adjustment device (23), the position of the object relative to the clamping device (6, 6,); Controlling and starting the stroke of the traction device (25), the distal cam assembly (26) includes Between the forms, the second interactive device (32) is pushed. Characterized by: when the traction device (25) is activated to be movably fitted to the jaw device (6, 6,), jl Lago the packaging material tube (3) to adjust the feeding along the path (p) And include/cam assembly (26) for use in a predetermined station along the route (P) (2 is =, 2. according to the unit of claim 1 of the unit, when the unit is 'the levitation device (55, 56) The control is to push the second interactive device (32) into an inactive form. According to the unit of claim 1 or 2, there is a special 1295984 application for the patent garden renewal path (P) into a cross and a second interactive device (3 2 devices (6, ~ and - actuators (2) For the purpose of defining the extended configuration of the working device (32) and the retracting form of the incompetent shape defining the first device (32) (55p blasting the elbow mechanism 4. According to the application The unit of claim 3, characterized in that the actuator (56) comprises an output member (58) movable in a direction (9) parallel to the path (7); and the toggle mechanism (55) comprises Two levers (10), 6U, having adjacent ends are connected to each other by a money chain and connected to the actuator (56) (output member (58), and the other ends of the two levers (6〇, 61) are respectively Connected to the clip device (6, 6,) and the second interactive device (32) by a hinge. 5. According to the old unit of the patent application (4), having the feature &: the device includes at least two The forming assemblies (6, 6,) defined by the two jaws (8a, ,) are cyclically cooperated with the tube (3); and, the traction device The setting device (25), the guiding device ((55 56), and the second interactive device (32) are all made up of two of the forming assemblies (6, 6') for one day (8a 8b). A (8a) is carried. 6. According to the scope of the patent application, the single nt #m interaction device includes - the cam (30) contains a slope-like initial portion, the main plane is stretched in the way (7) and is - The position adjusted in the plane of the vertical path (p) is fixed to the support skirt (31); the second interaction device includes a cam follower (32) that cooperates with the cam in a sliding manner so that the cam can be Pushing in the direction (X) of the way (p) is 0-2, 1295984 The scope of the patent application continuation page • According to the unit of the sixth paragraph of the patent scope, the characteristic is: the cam follower (32) is a rocker arm having an intermediate portion (5〇) hingedly connected to the child's toggle, the mechanism (55), the -th-end portion (7), 53) cooperating with the cam - the second end portion (54) connected to the pulling device (25) by means of a transmission device (33): a manufacturing method for use on a forming unit (1) Feeding the k (P) feed, filling the pourable food, and having a continuous equidistant ornament of the foil-coated material tube (3) to make a sealed package (2), the method comprising the following steps: - along the route Partial circulation of (P) pushes the forming unit (1), at the equally spaced cross section, gripping and sealing the packaging material tube (3), defining the sealing strip (15) of the opposite side of the packaging (2) And - by applying a pulling force to the tube (3) to adjust the feeding of the tube along the path (p) to adjust the position of the ornament relative to the jaw device (6, 6,), and the application of pressure ' Controlled by a cam assembly (26) that includes a fixed first interaction device (30) and a second interaction device (32) from which the second interaction device (32) is attached The device (6, 6') carries and cooperates with the first interaction device (3〇) by the movement of the clamp device (6, 6'); the child method is characterized by: Another step, that is, selectively working with the second interactive device (32) in cooperation with the first interactive device (30) And push between the incompetent forms of the first interactive device (30). 9. The method of claim 8, wherein the second interactive device (32) is pushed into the incompetent form when the unit (1) of the patent application is initiated.