CN112829327A - Seam calibration method for continuous production of degradable plastic bags - Google Patents

Seam calibration method for continuous production of degradable plastic bags Download PDF

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Publication number
CN112829327A
CN112829327A CN202110135219.2A CN202110135219A CN112829327A CN 112829327 A CN112829327 A CN 112829327A CN 202110135219 A CN202110135219 A CN 202110135219A CN 112829327 A CN112829327 A CN 112829327A
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China
Prior art keywords
shaped
station
strip
clamping
clamping block
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CN202110135219.2A
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Chinese (zh)
Inventor
李荣建
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Individual
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Individual
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Priority to CN202110135219.2A priority Critical patent/CN112829327A/en
Publication of CN112829327A publication Critical patent/CN112829327A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841—Holding or clamping means for handling purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/03—After-treatments in the joint area
    • B29C66/032—Mechanical after-treatments
    • B29C66/0326—Cutting, e.g. by using waterjets, or perforating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/851—Bag or container making machines
    • B29C66/8511—Bag making machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7128—Bags, sacks, sachets

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)

Abstract

The invention belongs to the technical field of plastic packaging bag production and processing, and particularly relates to a seam calibration method for continuous production of degradable plastic bags, wherein a seam is a page-shaped structure formed by downwards bending and heat-sealing and bonding the end parts of two sections of horizontal strip-shaped materials; also comprises a traction mechanism, a shearing mechanism, a transfer mechanism and a hot-pressing mechanism. The invention can place the colored calibration object at the material joint and melt the colored calibration object and the material into a whole by heating, thereby being convenient for downstream equipment to identify and avoid the material joint and reducing the defective rate of the system.

Description

Seam calibration method for continuous production of degradable plastic bags
Technical Field
The invention belongs to the technical field of plastic packaging bag production and processing, and particularly relates to a seam calibration method for continuous production of degradable plastic bags.
Background
The plastic bag is generally processed and formed by adopting a blow molding process, and the general process flow comprises the following steps: firstly, heating and melting plastic particles by using a blowing device, blowing the plastic particles into a cylindrical plastic film, then hot-pressing the cylindrical plastic film to form a transverse hot seam, and finally cutting the cylindrical plastic film from the hot seam by using a cutting device to obtain a plastic bag monomer. In the process of blow molding of plastic bags, once impurities are mixed in molten plastic, holes are easily formed in the process of blow molding, the occurrence of the impurities is difficult to avoid, so that the phenomenon of film breakage often occurs in the prior art in the process of blow molding, and when the phenomenon occurs, the method in the prior art is as follows: firstly, the blow molding device is controlled to stop, then the broken hole area is manually torn off from the film, a knot is made on the film at the upper end of the blow molding device, then the blow molding device is restarted, and the film is pulled to the rolling position again. This type of treatment requires a blow molding device to be stopped halfway, so that it is not possible to realize a series connection with a downstream hot sealing and cutting device, and it is difficult to realize continuous automated production, which affects production efficiency. Therefore, the inventor of the invention designs a device capable of plugging and reinforcing a broken hole area on line when a broken hole occurs in a film, so that the film can still be subjected to continuous blow molding and conveyed to the downstream after the broken hole occurs, but the broken hole area cannot form a qualified plastic bag monomer, so that the film needs to be removed on a production line, and meanwhile, the seam generated after the broken hole area is removed can be effectively identified by downstream equipment so as to be avoided when the downstream equipment is processed.
Disclosure of Invention
The invention aims to provide a seam calibration method for continuous production of degradable plastic bags, which can calibrate seams generated after waste materials of a production line are cut off so as to avoid seam areas in the processing process of downstream equipment and reduce the defective rate.
The technical scheme adopted by the invention is as follows:
a method for calibrating seams for continuously producing degradable plastic bags is characterized in that a calibration mechanism is adopted to mark the seams of an external material, the seams are page-shaped structures formed by downwards bending and heat-sealing and bonding the end parts of two sections of horizontal strip-shaped materials, the calibration mechanism comprises strip-shaped calibration objects made of colored hot-melt materials, the strip-shaped calibration objects are wound on a discharging roller, and the axial direction of the discharging roller is parallel to the length direction of the strip-shaped materials; the device also comprises a drawing mechanism for drawing the strip-shaped calibration object from the feeding roller along the width direction of the strip-shaped material, a cutting mechanism for cutting the drawn strip-shaped calibration object, a transferring mechanism for transferring the cut strip-shaped calibration object to a joint and clamping the strip-shaped calibration object between the page-shaped structure and the strip-shaped material, and a hot pressing mechanism for heat-sealing and bonding the page-shaped structure, the strip-shaped calibration object and the strip-shaped material into a whole.
The transfer mechanism comprises a supporting table, the strip-shaped material is pulled by the traction device and fed along the top surface of the supporting table, and when the page-shaped structure reaches the supporting table, the page-shaped structure can be blocked by the side surface of the supporting table and then turned into a state of being attached to the strip-shaped material; the transfer mechanism further comprises clamping parts arranged on two sides of the supporting platform, the discharging roller and the traction mechanism are located below the supporting platform, the clamping parts are arranged in a rotating mode along a horizontal axis, two ends of a strip-shaped calibration object pulled out by the traction mechanism can be clamped tightly when the clamping parts rotate to a first preset station, the clamping parts clamp the strip-shaped calibration object tightly, the shearing mechanism shears the strip-shaped calibration object from the discharging roller, and the clamping parts can insert the strip-shaped calibration object between the page-shaped structure and the strip-shaped material and loosen two ends of the strip-shaped calibration object when the clamping parts rotate to a second preset station.
One end of the supporting platform, namely one end of the belt-shaped material coming material, is provided with an arc-shaped guide surface which extends downwards and smoothly from the top surface of the supporting platform, and the coming material direction of the belt-shaped material and the top surface of the supporting platform form a certain included angle so that part area of the belt-shaped material is attached to the arc-shaped guide surface; the centre of rotation of clamping part is coaxial with the arc center of arc guide face, and its area face is tangent with the arc guide face when banded calibration object revolves to the arc guide face along with clamping part.
The clamping part comprises a rotary seat, the rotary seat is fixedly connected with a rotary shaft, the rotary shaft is rotatably connected with the supporting platform along the horizontal direction, a first clamping block and a second clamping block are arranged on the rotary seat, the first clamping block is movably connected with the rotary seat along the radial direction of the rotary shaft, the second clamping block is movably connected with the rotary seat along the radial direction of the rotary shaft, and the first clamping block and the second clamping block form an opening and closing arrangement; the first clamping block is provided with a station a and a station b along the moving direction, wherein the station b is closer to the axis of the rotating shaft than the station a, the second clamping block is provided with a station c and a station d along the moving direction, wherein the station d is closer to the axis of the rotating shaft than the station c, only when the first clamping block is positioned at the station b, the second clamping block is positioned at the station c, the first clamping block and the second clamping block are in a clamping state, and the rest stations are in an opening state.
The clamping driving mechanism is assembled to drive the first clamping block and the second clamping block to be linked when the rotary shaft rotates, namely, the first clamping block and the second clamping block can be driven to the station b when the clamping part reaches the first preset station, the second clamping block can be driven to the station d when the clamping part reaches the second preset station, and the first clamping block can be driven to the station a and the second clamping block can be driven to the station c simultaneously when the clamping part rotates from the second preset station to the first preset station and does not reach the first preset station.
The clamping driving mechanism comprises a first elastic component arranged between the first clamping block and the rotary seat and a second elastic component arranged between the second clamping block and the rotary seat, the first elastic component is assembled to enable the elastic force of the first elastic component to drive the first clamping block to move from the station a to the station b, and the second elastic component is assembled to enable the elastic force of the second elastic component to drive the second clamping block to move from the station c to the station d; the clamping driving mechanism further comprises a first locking unit and a second locking unit, wherein the first locking unit is assembled to enable the first clamping block to be kept at the station a when the first clamping block is at the station a and to enable the first clamping block to be released from the station a when the clamping part reaches the first preset station; the second locking unit is assembled to be able to hold the second clamping block in the station c when the second clamping block is in the station c and to release the second clamping block from the station c when the clamping portion reaches the second preset station; the clamping driving mechanism further comprises a cam plate fixedly connected with the rack, a wheel surface of the cam plate and rollers arranged on the first clamping block and the second clamping block form rolling fit, and when the clamping portion rotates from the second preset station to the first preset station and does not reach the first preset station, the first clamping block can be driven to the station a from the station b and the second clamping block can be driven to the station c from the station d.
The first clamping block and the rotary seat form sliding fit through a first guide rod, the first locking unit comprises a first locking plate which is in sliding connection with the rotary seat along the radial direction of the first guide rod, a first arc-shaped notch is formed in the first locking plate, a first locking groove is formed in the first guide rod, the first arc-shaped notch and the first locking groove can be opposite or staggered in the sliding process of the first locking plate, the first guide rod can freely slide relative to the rotary seat when the first arc-shaped notch and the first locking groove are opposite, and the first locking plate can be clamped in the first locking groove when the first arc-shaped notch and the first locking groove are staggered so as to prevent the first guide rod from sliding relative to the rotary seat; a third elastic part and a limiting part for limiting the sliding stroke of the first locking plate are arranged between the first locking plate and the rotary seat, and the first locking plate can enable the first arc-shaped notch and the first locking groove to be in a staggered state under the action of the third elastic part; the first locking plate is provided with an arch-shaped bulge, the rack is also provided with a first arch-shaped unlocking block which is blocked and connected with the arch-shaped bulge of the first locking plate, and when the clamping part rotates to a first preset station, the first arch-shaped unlocking block can extrude the first locking plate to enable the first arc-shaped notch to be opposite to the first locking groove.
The second clamping block and the rotary seat form sliding fit through a second guide rod, the second locking unit comprises a second locking plate which is connected with the rotary seat in a sliding mode along the radial direction of the second guide rod, a second arc-shaped notch is formed in the second locking plate, a second locking groove is formed in the second guide rod, the second arc-shaped notch and the second locking groove can be opposite or staggered in the sliding process of the second locking plate, the second guide rod can freely slide relative to the rotary seat when the second arc-shaped notch and the second locking groove are opposite, and the second locking plate can be clamped in the second locking groove when the second arc-shaped notch and the second locking groove are staggered so as to prevent the first guide rod from sliding relative to the rotary seat; a fourth elastic component and a limiting part for limiting the sliding stroke of the second locking plate are arranged between the second locking plate and the rotary seat, and the second locking plate can enable the second arc-shaped notch and the second locking groove to be in a staggered state under the action of the fourth elastic component; the second arc-shaped notch is arranged on the second locking plate, the frame is further provided with a second arc-shaped unlocking block which is blocked and connected with the arc-shaped protrusion of the second locking plate, and when the clamping part rotates to the second preset station, the second arc-shaped unlocking block can extrude the second locking plate to enable the second arc-shaped notch to be right opposite to the second locking groove.
The discharging end of the discharging roller is provided with a guide frame for the strip-shaped calibration object to pass through; the traction mechanism comprises an electric cylinder arranged along the width direction of the belt-shaped material, and an electric clamp is arranged on a sliding block of the electric cylinder; hot pressing mechanism includes that the activity sets up along vertical direction scalds the shrouding, scalds the shrouding side and is equipped with the sensor that is used for discerning banded calibration thing, scalds the shrouding and links to each other with the linear drive element of vertical setting, and this linear drive element and sensor are connected with the controller electricity, and the draw gear action of controller control banded material when the sensor detects banded calibration thing arrival to scald the shrouding below makes the banded material of scalding the shrouding below stop to feed, and the control scalds the shrouding simultaneously and implements to scald to seal banded calibration thing place region.
An online waste treatment device for strip materials comprises the seam calibration method for continuous production of degradable plastic bags.
The invention has the technical effects that: the invention can place the colored calibration object at the material joint and melt the colored calibration object and the material into a whole by heating, thereby being convenient for downstream equipment to identify and avoid the material joint and reducing the defective rate of the system.
Drawings
FIG. 1 is a perspective view of a scrap cutting mechanism and a seam marking mechanism provided by an embodiment of the present invention;
FIG. 2 is a perspective view of a scrap cutting mechanism provided in accordance with an embodiment of the present invention;
fig. 3 is a perspective view of a swaging unit provided in an embodiment of the present invention;
fig. 4 is a partial exploded view of a swaging unit provided in an embodiment of the present invention;
FIG. 5 is a perspective view of a hot seal cutting unit provided by an embodiment of the present invention;
FIG. 6 is a partial exploded view of a hot seal cutting unit provided by an embodiment of the present invention;
FIG. 7 is a perspective view of a seam marking mechanism provided by embodiments of the present invention;
FIG. 8 is a perspective view of an emptying roll, pulling mechanism and shearing mechanism provided by an embodiment of the present invention;
FIG. 9 is a perspective view of a transfer mechanism provided by an embodiment of the present invention;
FIG. 10 is a schematic diagram of a transfer mechanism provided by an embodiment of the present invention;
FIG. 11 is an exploded view of a clamp provided by an embodiment of the present invention;
FIG. 12 is a side view of a pallet according to an embodiment of the present invention.
The rack in the invention refers to a supporting structure fixed with the ground, the supporting structure of the rack is hidden in the attached drawing of the invention, and the specific shape of the supporting structure can be selected according to the actual spatial layout.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the following description is given in conjunction with the accompanying examples. It is to be understood that the following text is merely illustrative of one or more specific embodiments of the invention and does not strictly limit the scope of the invention as specifically claimed.
Example 1
As shown in fig. 1, an online waste disposal apparatus for degrading strip-shaped materials comprises a waste material cutting mechanism 50 and a seam marking mechanism 60, which are arranged in sequence along the conveying direction of the strip-shaped materials.
As shown in fig. 2 to 6, the scrap cutting mechanism 50 includes a front conveying unit 51, a rear conveying unit 52, a pressing unit 53 and a hot seal cutting unit 54, the front conveying unit 51 and the rear conveying unit 52 are arranged at intervals along the horizontal direction, the pressing unit 53 is movably arranged between the front conveying unit 51 and the rear conveying unit 52 along the vertical direction, and the hot seal cutting unit 54 is located below the front conveying unit 51 and the rear conveying unit 52 and on both sides of the moving path of the pressing unit 53; the material pressing unit 53 is normally located above the front conveying unit 51 and the rear conveying unit 52, the band-shaped material, i.e., the flattened tubular plastic film 1, is conveyed from the front conveying unit 51 to the rear conveying unit 52, when the scrap section on the strip-shaped material reaches between the front conveying unit 51 and the rear conveying unit 52, the swaging unit 53 descends, the rear conveying unit 52 stops conveying, meanwhile, the front conveying unit 51 continues to convey, the pressing unit 53 draws the belt-shaped materials accumulated between the front conveying unit 51 and the rear conveying unit 52 into a U shape, the pressing unit 53 descends to a preset position, then the front conveying unit 51 stops conveying, meanwhile, the hot sealing and cutting unit 54 hot seals and bonds two side walls of the U-shaped material into a whole and cuts the belt-shaped material below the hot sealing area, a seam 2 with a page-shaped structure is generated on the belt-shaped material at the moment, and then the pressing unit 53 moves upwards and returns to the initial station; the swaging unit 53 includes a posture adjusting mechanism that is assembled to be able to transfer the swaging unit 53 to a side of the belt-shaped material so that the swaging unit 53 avoids the belt-shaped material when ascending.
As shown in fig. 7-12, the seam calibration mechanism 60 includes a strip-shaped calibration object 3 made of a colored hot-melt material, the strip-shaped calibration object 3 is wound on an emptying roller 61, and the axial direction of the emptying roller 61 is parallel to the length direction of the strip-shaped material; the device further comprises a drawing mechanism 62 for drawing the strip-shaped calibration object 3 from the discharging roller 61 along the width direction of the strip-shaped material, a cutting mechanism 63 for cutting the drawn strip-shaped calibration object 3, a transferring mechanism 64 for transferring the cut strip-shaped calibration object 3 to the seam 2 and clamping the strip-shaped calibration object 3 between the page-shaped structure and the strip-shaped material, and a hot pressing mechanism 65 for heat-sealing and bonding the page-shaped structure, the strip-shaped calibration object 3 and the strip-shaped material into a whole. The invention can realize the prior cutting of waste materials and simultaneously calibrate the generated seam 2, so that subsequent processing equipment can avoid the position of the seam 2 and reduce the number of defective products.
Preferably, as shown in fig. 3 and 4, the nip unit 53 includes a nip roll 531, the nip roll 531 is rotatably disposed on a lifting support 532, the lifting support 532 is movably connected to the frame along the vertical direction, a rotating shaft of the nip roll 531 is pivotally connected to the lifting support 532, so that the rotating shaft of the nip roll 531 can be switched between a horizontal state and a vertical state, and a pivoting shaft 533 between the nip roll 531 and the lifting support 532 is located beside the belt-shaped material when viewed along the vertical direction; the posture adjusting mechanism is configured to enable the rotating shaft of the nip roll 531 to maintain a horizontal posture during the downward movement of the nip roll 531, and to enable the rotating shaft of the nip roll 531 to maintain a vertical state during the upward movement of the nip roll 531.
Preferably, a pivot shaft 533 between the nip roll 531 and the lifting support 532 is fixedly connected with a rotating shaft of the nip roll 531, and is rotatably connected with the lifting support 532, the posture adjusting mechanism comprises a torsion spring 534 disposed between the pivot shaft 533 and the lifting support 532, and the torsion spring 534 is assembled such that the elasticity thereof can drive the nip roll 531 to swing from a horizontal state to a vertical state; the pivot shaft 533 is further provided with a swinging block 535, the upper end of the movement stroke of the lifting support 532 is provided with a guide wheel 539, the guide wheel 539 is rotatably connected with the frame, and when the lifting support 532 moves upwards to the upper end of the movement stroke, the guide wheel 539 can push and push the swinging block 535 to enable the nip roll 531 to swing from a vertical state to a horizontal state; the device further comprises a locking mechanism which is assembled to enable the nip roll 531 to be kept in a horizontal state when the nip roll 531 is in the horizontal state, and to enable the nip roll 531 to be released from the horizontal state to be swung to a vertical state under the action of the torsion spring 534 when the lifting bracket 532 descends to the lower end of the movement stroke; the locking mechanism comprises a flat shaft 5331 arranged on the pivot shaft 533 and a locking block 536 in sliding connection with the lifting support 532, the locking block 536 is provided with a U-shaped groove with the width consistent with that between two straight walls of the flat shaft 5331 and a circular groove with the diameter larger than the maximum width of the flat shaft 5331, the circular groove and the U-shaped groove are communicated into a whole, and when the pressure roller 531 is in a horizontal state, the two straight walls of the flat shaft 5331 are flush with two side walls of the U-shaped groove; a first elastic element 537 is arranged between the locking block 536 and the lifting bracket 532, and the first elastic element 537 is configured to drive the U-shaped groove of the locking block 536 to be clamped on the flat shaft 5331; the lower end of the movement stroke of the lifting support 532 is provided with an unlocking block 538, the unlocking block 538 is fixedly connected with the rack, the unlocking block 538 is connected with the locking block 536 in a blocking mode, when the pressure roller 531 moves to the preset position, the unlocking block 538 can extrude the locking block 536 and enable a circular groove in the locking block 536 to be opposite to the flat shaft 5331, and then the pivot shaft 533 can swing under the action of the torsion spring 534.
Preferably, as shown in fig. 5 and 6, the ironing and sealing cutting unit 54 includes two movable seats 541 arranged to open and close along a horizontal direction, the two movable seats 541 are respectively provided with a cutting knife 544 configured to be in shearing fit with each other, each of the two movable seats 541 is provided with a clamping block 542 and an ironing and sealing block 543, the ironing and sealing block 543 is an electric heating element, the clamping block 542 and the ironing and sealing block 543 are both long-strip-shaped, the clamping block 542 and the ironing and sealing block 543 are both located on opposite sides of the two movable seats 541, wherein the ironing and sealing block 543 is fixedly connected with the movable seats 541, the clamping block 542 is movably connected with the movable seats 541 along the opening and closing direction of the two movable seats 541, a second elastic element 545 is arranged between the clamping block 542 and the movable seats 541, and the second elastic element 545 is assembled such that its elastic force can drive the clamping block 542 to move in a direction away from the movable seats 541; the cutting knife 544 is positioned below the sealing block 543; the clamping block 542 protrudes from the sealing block 543 in a normal state, that is, when the two movable seats 541 are folded, the two clamping blocks 542 are folded first, and when the second elastic unit is deformed by a distance, the two sealing blocks 543 are folded.
Preferably, the movable seats 541 are slidably connected with a horizontal rail arranged on the frame, a linkage device is arranged between the lifting support 532 and the movable seats 541, and the linkage device is configured to simultaneously drive the two movable seats 541 to be closed when the lifting support 532 drives the nip roll 531 to move downwards to the preset position, and simultaneously drive the two movable seats 541 to be separated when the lifting support 532 moves upwards; the linkage device comprises trunnions 546 which are movably arranged in a protruding and extending mode and a driving plate 5321 fixedly connected with a lifting support 532, wherein an inclined waist-shaped groove 5322 is formed in the driving plate 5321, the lower end of the inclined waist-shaped groove 5322 penetrates through the edge of the driving plate 5321, the trunnions 546 can enter the inclined waist-shaped groove 5322 from the lower end of the inclined waist-shaped groove 5322 in the descending process of the lifting support 532, then the movable seats 541 are folded together along with the descending of the driving plate 5321, the movable seats 541 are firstly separated from each other along with the ascending of the driving plate 5321 in the ascending process of the lifting support 532, and then the trunnions 546 are moved away from the lower end of the inclined waist-shaped hole 422 to stop the movable.
Preferably, the two nip rolls 531 are symmetrically arranged along the center line of the strip-shaped material, and the two nip rolls 531 swing to two sides of the strip-shaped material respectively when the lifting support 532 moves upwards; the front conveying unit 51 and the rear conveying unit 52 are both conveying rollers.
Preferably, as shown in fig. 9, 11 and 12, the transfer mechanism 64 includes a pallet 642, and the strip-shaped materials are pulled by the pulling device and fed along the top surface of the pallet 642, and when the signature-like structures reach the pallet 642, the signature-like structures can be blocked by the sides of the pallet 642 and turned over to be attached to the strip-shaped materials; the transfer mechanism 64 further comprises clamping portions 641 arranged on two sides of the pallet 642, the discharging roller 61 and the drawing mechanism 62 are located below the pallet 642, the clamping portions 641 are arranged in a rotating mode along a horizontal axis, when the clamping portions 641 rotate to a first preset station, two ends of the strip-shaped calibration object 3 drawn by the drawing mechanism 62 can be clamped tightly, after the clamping portions 641 clamp the strip-shaped calibration object 3, the cutting mechanism 63 cuts the strip-shaped calibration object 3 from the discharging roller 61, and when the clamping portions 641 rotate to a second preset station, the strip-shaped calibration object 3 can be inserted between the page-shaped structure and the strip-shaped calibration object, and two ends of the strip-shaped calibration object 3 can be loosened; an arc-shaped guide surface which smoothly extends downwards from the top surface of the saddle 642 is arranged at one end of the saddle 642, namely one end of the belt-shaped material coming material, and the belt-shaped material coming direction and the top surface of the saddle 642 form a certain included angle so that the partial area of the belt-shaped material is attached to the arc-shaped guide surface; the centre of rotation of the clamping portion 641 is coaxial with the arc center of the arc guide surface, and the belt surface of the belt-shaped calibration object 3 is tangent to the arc guide surface when the clamping portion 641 rotates to the arc guide surface. The principle of inserting the strip-shaped object 3 into the seam 2 is shown in fig. 10, which is an enlarged schematic diagram, and in practical application, the strip-shaped object 3 is tightly attached to the bottom surface of the strip-shaped material during the transfer process, so that the strip-shaped object can be reliably inserted into the seam between the seam 2 and the strip-shaped material without slipping down below the seam 2.
Preferably, the clamping part 641 comprises a rotary seat 6413, the rotary seat 6413 is fixedly connected with a rotary shaft, the rotary shaft is rotatably connected with the supporting platform 642 in the horizontal direction, the rotary seat 6413 is provided with a first clamping block 6411 and a second clamping block 6412, the first clamping block 6411 is movably connected with the rotary seat 6413 in the radial direction of the rotary shaft, the second clamping block 6412 is movably connected with the rotary seat 6413 in the radial direction of the rotary shaft, and the first clamping block 6411 and the second clamping block 6412 are opened and closed; the first clamping block 6411 has a station a and a station b along the moving direction, wherein the station b is closer to the axis of the rotating shaft than the station a, the second clamping block 6412 has a station c and a station d along the moving direction, wherein the station d is closer to the axis of the rotating shaft than the station c, only when the first clamping block 6411 is at the station b and the second clamping block 6412 is at the station c, the two stations are in the clamping state, and the other stations are in the opening state; the clamping driving mechanism is assembled to drive the first clamping block 6411 and the second clamping block 6412 to be linked in the rotating process of the rotating shaft, namely, the first clamping block 6411 can be driven to the station b when the clamping portion 641 reaches the first preset station, the second clamping block 6412 can be driven to the station d when the clamping portion 641 reaches the second preset station, and the first clamping block 6411 can be driven to the station a and the second clamping block 6412 can be driven to the station c simultaneously when the clamping portion 641 rotates from the second preset station to the first preset station and does not reach the first preset station.
Preferably, the clamping driving mechanism comprises a first elastic component 6414 arranged between the first clamping block 6411 and the rotary seat 6413 and a second elastic component 6415 arranged between the second clamping block 6412 and the rotary seat 6413, wherein the first elastic component 6414 is assembled to enable the elastic force thereof to drive the first clamping block 6411 to move from the station a to the station b, and the second elastic component 6415 is assembled to enable the elastic force thereof to drive the second clamping block 6412 to move from the station c to the station d; the grip driving mechanism further includes a first locking unit and a second locking unit, the first locking unit being fitted to be able to hold the first block 6411 at the station a when the first block 6411 is at the station a and to be able to release the first block 6411 from the station a when the grip portion 641 reaches the first preset station; the second locking unit is fitted to be able to hold the second block 6412 at the station c when the second block 6412 is at the station c and to be able to release the second block 6412 from the station c when the grip portion 641 reaches the second preset station; the clamping driving mechanism further comprises a cam plate 643 fixedly connected with the frame, a wheel surface of the cam plate 643 is in rolling fit with rollers arranged on the first clamping block 6411 and the second clamping block 6412, and when the clamping portion 641 rotates from the second preset station to the first preset station and does not reach the first preset station, the first clamping block 6411 can be driven from the station b to the station a and the second clamping block 6412 can be driven from the station d to the station c.
Preferably, the first clamping block 6411 is in sliding fit with the rotating seat 6413 through a first guide rod 6416, the first locking unit includes a first locking plate 6418 slidably connected with the rotating seat 6413 along a radial direction of the first guide rod 6416, the first locking plate 6418 is provided with a first arc-shaped notch 64181, the first guide rod 6416 is provided with a first locking groove 64161, the first locking plate 6418 can enable the first arc-shaped notch 64181 to be opposite to or staggered with respect to the first locking groove 64161 during sliding, the first guide rod 6416 can freely slide with respect to the rotating seat 6413 when the first arc-shaped notch 64181 is opposite to the first locking groove 64161, and the first locking plate 6418 can be clamped in the first locking groove 64161 when the first arc-shaped notch 64181 is staggered with respect to the first locking groove 64161 so as to prevent the first guide rod 6416 from sliding with respect to the rotating seat 6413; a third elastic component 64182 and a limiting part for limiting the sliding stroke of the first locking plate 6418 are arranged between the first locking plate 6418 and the rotary seat 6413, and the first locking plate 6418 can keep the first arc-shaped notch 64181 and the first locking groove 64161 in a staggered state under the action of the third elastic component 64182; the first locking plate 6418 is provided with an arched protrusion, the frame is further provided with a first arched unlocking block 644 which is blocked with the arched protrusion of the first locking plate 6418, and when the clamping portion 641 rotates to the first preset station, the first arched unlocking block 644 can press the first locking plate 6418 to enable the first arched notch 64181 to be opposite to the first locking groove 64161.
Preferably, the second clamping block 6412 is in sliding fit with the rotary seat 6413 through a second guide rod 6417, the second locking unit includes a second locking plate 6419 slidably connected with the rotary seat 6413 along the radial direction of the second guide rod 6417, the second locking plate 6419 is provided with a second arc-shaped notch 64191, the second guide rod 6417 is provided with a second locking groove 64171, the second locking plate 6419 can enable the second arc-shaped notch 64191 to be opposite to or staggered with respect to the second locking groove 64171 during sliding, the second guide rod 6417 can freely slide with respect to the rotary seat 6413 when the second arc-shaped notch 64191 is opposite to the second locking groove 64171, and the second locking plate 6419 can be blocked in the second locking groove 64171 when the second arc-shaped notch 64191 is staggered with respect to the second locking groove 64171 so as to prevent the first guide rod 6416 from sliding with respect to the rotary seat 6413; a fourth elastic member 64192 and a limiting part for limiting the sliding stroke of the second locking plate 6419 are arranged between the second locking plate 6419 and the rotary seat 6413, and the second locking plate 6419 can keep the second arc-shaped notch 64191 and the second locking groove 64171 in a staggered state under the action of the fourth elastic member 64192; the second locking plate 6419 is provided with an arched protrusion, the frame is further provided with a second arched unlocking block 645 which is blocked with the arched protrusion of the second locking plate 6419, and when the clamping portion 641 rotates to the second preset station, the second arched unlocking block 645 can extrude the second locking plate 6419 to enable the second arc-shaped notch 64191 to be opposite to the second locking groove 64171. The clamping and releasing actions of the clamping part 641 are realized by using a simple mechanical transmission structure, the equipment structure is simplified, the equipment cost is reduced, and the reliability of the mechanical transmission structure is higher compared with a single electric control mode.
Preferably, as shown in fig. 8, the discharging roller 61 is rotatably disposed on the frame, and the discharging end of the discharging roller 61 is provided with a guiding frame 611 for the strip-shaped calibration object 3 to pass through; the drawing mechanism 62 comprises an electric cylinder 621 arranged along the width direction of the belt-shaped material, and an electric clamp 622 is arranged on a sliding block of the electric cylinder 621; the hot pressing mechanism 65 comprises a hot pressing plate 651 movably arranged in the vertical direction, a sensor 652 used for identifying the strip-shaped calibration object 3 is arranged beside the hot pressing plate 651, the hot pressing plate 651 is connected with a vertically arranged linear driving element, the linear driving element and the sensor 652 are electrically connected with a controller, when the sensor 652 detects that the strip-shaped calibration object 3 reaches the position below the hot pressing plate 651, the controller controls the action of a traction device of the strip-shaped material, so that the strip-shaped material below the hot pressing plate 651 stops feeding, and meanwhile, the hot pressing plate 651 is controlled to carry out hot pressing on the area where the strip-shaped calibration object 3 is located. The cutting device comprises two blades which are opened and closed up and down, the specific driving mode of the two blades can be selected from the prior art, and the two blades are driven by a pneumatic element or an electric element. The hot sealing device 70 and the cutting device 80 at the downstream of the production line in the invention both adopt mature structures in the prior art, and are not described again.
Example 2
A method of on-line treatment of waste material using the apparatus described in example 1 comprising the steps of:
step 1: drawing the waste material area to the lower part of the belt-shaped material conveying path to form a U shape;
step 2: two side walls of the upper end of the U-shaped waste material area are hot-sealed and bonded together, and waste materials below the hot-sealed area are cut; forming a page-shaped seam 2 on the belt-shaped material;
step 3; conveying the seam 2 to a seam 2 calibration station downstream;
and 4, step 4: and a strip of band-shaped calibration object 3 made of colored hot melt material is clamped between the page-shaped seam 2 and the band-shaped material at a calibration station of the seam 2, and the band-shaped calibration object 3, the page-shaped seam 2 and the band-shaped material are bonded into a whole by heat sealing.
In the step 1, the pressing unit 53 is adopted to draw the waste material area.
In the step 2, the upper end of the U-shaped waste area is hot sealed and cut by using the hot sealing and cutting unit 54.
In said step 4, the transfer mechanism 64 is used to transfer the strip-shaped object 3 to the seam 2 and to clamp the strip-shaped object 3 between the book-page-shaped structure and the strip-shaped material.
In the step 4, the page-shaped structure, the band-shaped calibration object 3 and the band-shaped material are thermally sealed and bonded into a whole by using the hot-pressing mechanism 65.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.

Claims (10)

1. A seam calibration method for continuous production of degradable plastic bags is characterized in that: marking the joint of the external material by using a calibration mechanism, wherein the joint (2) is a page-shaped structure formed by bending and heat-sealing the end parts of two sections of horizontal strip-shaped materials downwards, the calibration mechanism comprises a strip-shaped calibration object (3) made of a colored hot-melt material, the strip-shaped calibration object (3) is wound on a discharging roller (61), and the axial direction of the discharging roller (61) is parallel to the length direction of the strip-shaped materials; the device also comprises a drawing mechanism (62) for drawing the strip-shaped calibration object (3) out of the discharging roller (61) along the width direction of the strip-shaped material, a cutting mechanism (63) for cutting the drawn strip-shaped calibration object (3), a transferring mechanism (64) for transferring the cut strip-shaped calibration object (3) to the seam (2) and clamping the strip-shaped calibration object (3) between the page-shaped structure and the strip-shaped material, and a hot pressing mechanism (65) for heat-sealing and bonding the page-shaped structure, the strip-shaped calibration object (3) and the strip-shaped material into a whole.
2. The method for calibrating seams in continuous production of degradable plastic bags according to claim 1, wherein the method comprises the following steps: the transfer mechanism (64) comprises a pallet (642), the strip-shaped materials are pulled by a pulling device and fed along the top surface of the pallet (642), and when the page-shaped structures reach the pallet (642), the page-shaped structures can be blocked by the side surface of the pallet (642) and can be turned into a state of being attached to the strip-shaped materials; the transfer mechanism (64) further comprises clamping portions (641) arranged on two sides of the supporting table (642), the discharging roller (61) and the drawing mechanism (62) are located below the supporting table (642), the clamping portions (641) are arranged in a rotating mode along a horizontal axis, when the clamping portions (641) rotate to a first preset station, two ends of a strip-shaped calibration object (3) drawn by the drawing mechanism (62) can be clamped tightly, the clamping portions (641) clamp the strip-shaped calibration object (3) and then the cutting mechanism (63) cuts the strip-shaped calibration object (3) from the discharging roller (61), and when the clamping portions (641) rotate to a second preset station, the strip-shaped calibration object (3) can be inserted between the page-shaped structure and the strip-shaped calibration object and two ends of the strip-shaped calibration object (3) can be loosened.
3. The method for calibrating seams for continuous production of degradable plastic bags according to claim 2, wherein: one end of the tray table (642), namely one end of the belt-shaped material incoming material, is provided with an arc-shaped guide surface which extends downwards and smoothly from the top surface of the tray table (642), and the incoming material direction of the belt-shaped material and the top surface of the tray table (642) form a certain included angle so that the partial area of the belt-shaped material is attached to the arc-shaped guide surface; the centre of rotation of clamping portion (641) is coaxial with the arc center of arc guide face, and its area face is tangent with arc guide face when banded calibration thing (3) along with clamping portion (641) gyration to arc guide face.
4. The seam calibration method for the continuous production of degradable plastic bags according to claim 3, wherein: the clamping part (641) comprises a rotary seat (6413), the rotary seat (6413) is fixedly connected with a rotary shaft, the rotary shaft is rotatably connected with the supporting platform (642) along the horizontal direction, a first clamping block (6411) and a second clamping block (6412) are arranged on the rotary seat (6413), the first clamping block (6411) is movably connected with the rotary seat (6413) along the radial direction of the rotary shaft, the second clamping block (6412) is movably connected with the rotary seat (6413) along the radial direction of the rotary shaft, and the first clamping block (6411) and the second clamping block (6412) form an opening and closing arrangement; the first clamping block (6411) is provided with a station a and a station b along the moving direction, wherein the station b is closer to the axis of the rotating shaft than the station a, the second clamping block (6412) is provided with a station c and a station d along the moving direction, wherein the station d is closer to the axis of the rotating shaft than the station c, the second clamping block (6412) is in the clamping state only when the first clamping block (6411) is positioned at the station b and the station c is positioned at the same time, and the rest stations are in the opening state.
5. The seam calibration method for the continuous production of degradable plastic bags according to claim 4, wherein: the clamping driving mechanism is assembled to be capable of driving the first clamping block (6411) and the second clamping block (6412) to be linked when the rotating shaft rotates, namely the first clamping block (6411) can be driven to the station b when the clamping portion (641) reaches the first preset station, the second clamping block (6412) can be driven to the station d when the clamping portion (641) reaches the second preset station, and the first clamping block (6411) can be driven to the station a and the second clamping block (6412) can be driven to the station c simultaneously when the clamping portion (641) rotates from the second preset station to the first preset station and does not reach the first preset station.
6. The seam calibration method for the continuous production of degradable plastic bags according to claim 5, wherein: the clamping driving mechanism comprises a first elastic component (6414) arranged between a first clamping block (6411) and a rotary seat (6413), and a second elastic component (6415) arranged between a second clamping block (6412) and the rotary seat (6413), wherein the first elastic component (6414) is assembled to enable the elastic force of the first elastic component to drive the first clamping block (6411) to move from the station a to the station b, and the second elastic component (6415) is assembled to enable the elastic force of the second elastic component to drive the second clamping block (6412) to move from the station c to the station d; the clamp driving mechanism further includes a first locking unit and a second locking unit, the first locking unit being fitted to be able to hold the first block (6411) at the station a when the first block (6411) is at the station a and to be able to release the first block (6411) from the station a when the clamp portion (641) reaches a first preset station; the second locking unit is fitted to be able to hold the second block (6412) in the station c when the second block (6412) is in the station c and to release the second block (6412) from the station c when the grip portion (641) reaches the second preset station; the clamping driving mechanism further comprises a cam plate (643) fixedly connected with the rack, a wheel surface of the cam plate (643) is in rolling fit with rollers arranged on the first clamping block (6411) and the second clamping block (6412), and when the clamping portion (641) rotates from the second preset station to the first preset station and does not reach the first preset station, the first clamping block (6411) can be driven from the station b to the station a and the second clamping block (6412) can be driven from the station d to the station c.
7. The seam calibration method for the continuous production of degradable plastic bags according to claim 6, wherein: the first clamping block (6411) is in sliding fit with the rotary seat (6413) through a first guide rod (6416), the first locking unit comprises a first locking plate (6418) which is connected with the rotary seat (6413) in a sliding manner along the radial direction of a first guide rod (6416), a first arc-shaped notch (64181) is arranged on the first locking plate (6418), a first locking groove (64161) is arranged on the first guide rod (6416), the first arc-shaped notch (64181) and the first locking groove (64161) can be opposite to or staggered in the sliding process of the first locking plate (6418), when the first arc-shaped notch (64181) is aligned with the first locking groove (64161), the first guide rod (6416) can freely slide relative to the rotary seat (6413), when the first arc-shaped notch (64181) is staggered with the first locking groove (64161), the first locking plate (6418) can be clamped in the first locking groove (64161) so as to prevent the first guide rod (6416) from sliding relative to the rotary seat (6413); a third elastic component (64182) and a limiting part for limiting the sliding stroke of the first locking plate (6418) are arranged between the first locking plate (6418) and the rotary seat (6413), and the first locking plate (6418) can enable the first arc-shaped notch (64181) and the first locking groove (64161) to be kept in a staggered state under the action of the third elastic component (64182); the first locking plate (6418) is provided with an arched bulge, the rack is also provided with a first arched unlocking block (644) which is blocked with the arched bulge of the first locking plate (6418), and when the clamping part (641) rotates to a first preset station, the first arched unlocking block (644) can extrude the first locking plate (6418) to enable the first arched notch (64181) to be opposite to the first locking groove (64161).
8. The seam calibration method for the continuous production of degradable plastic bags according to claim 6, wherein: the second clamping block (6412) is in sliding fit with the rotary seat (6413) through a second guide rod (6417), the second locking unit comprises a second locking plate (6419) which is connected with the rotary seat (6413) in a sliding manner along the radial direction of a second guide rod (6417), a second arc-shaped notch (64191) is arranged on the second locking plate (6419), a second locking groove (64171) is arranged on the second guide rod (6417), and the second arc-shaped notch (64191) and the second locking groove (64171) can be opposite to or staggered in the sliding process of the second locking plate (6419), when the second arc-shaped notch (64191) is aligned with the second locking groove (64171), the second guide rod (6417) can freely slide relative to the rotary seat (6413), when the second arc-shaped notch (64191) is staggered with the second locking groove (64171), the second locking plate (6419) can be clamped in the second locking groove (64171) so as to prevent the first guide rod (6416) from sliding relative to the rotary seat (6413); a fourth elastic component (64192) and a limiting part for limiting the sliding stroke of the second locking plate (6419) are arranged between the second locking plate (6419) and the rotary seat (6413), and the second locking plate (6419) can enable the second arc-shaped notch (64191) and the second locking groove (64171) to be kept in a staggered state under the action of the fourth elastic component (64192); the second locking plate (6419) is provided with an arched bulge, the rack is further provided with a second arched unlocking block (645) which is blocked with the arched bulge of the second locking plate (6419), and when the clamping portion (641) rotates to a second preset station, the second arched unlocking block (645) can extrude the second locking plate (6419) to enable the second arched notch (64191) to be opposite to the second locking groove (64171).
9. The method for calibrating seams for continuous production of degradable plastic bags according to claim 1, wherein the method comprises the following steps: the discharging roller (61) is rotatably arranged on the frame, and a guide frame (611) for the strip-shaped calibration object (3) to pass through is arranged at the discharging end of the discharging roller (61); the drawing mechanism (62) comprises an electric cylinder (621) arranged along the width direction of the belt-shaped material, and an electric clamp (622) is arranged on a sliding block of the electric cylinder (621); the hot pressing mechanism (65) comprises a hot pressing plate (651) movably arranged in the vertical direction, a sensor (652) used for identifying the strip-shaped calibration object (3) is arranged beside the hot pressing plate (651), the hot pressing plate (651) is connected with a vertically arranged linear driving element, the linear driving element and the sensor (652) are electrically connected with a controller, when the sensor (652) detects that the strip-shaped calibration object (3) reaches the position below the hot pressing plate (651), the controller controls the action of a traction device of the strip-shaped material, the strip-shaped material below the hot pressing plate (651) stops feeding, and meanwhile the hot pressing plate (651) is controlled to carry out hot pressing on the area where the strip-shaped calibration object (3) is located.
10. An online treatment method for waste materials of strip materials is characterized in that: the method for calibrating seams for continuous production of degradable plastic bags according to any one of claims 1 to 9 is included.
CN202110135219.2A 2021-02-01 2021-02-01 Seam calibration method for continuous production of degradable plastic bags Withdrawn CN112829327A (en)

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Application Number Priority Date Filing Date Title
CN202110135219.2A CN112829327A (en) 2021-02-01 2021-02-01 Seam calibration method for continuous production of degradable plastic bags

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Application Number Priority Date Filing Date Title
CN202110135219.2A CN112829327A (en) 2021-02-01 2021-02-01 Seam calibration method for continuous production of degradable plastic bags

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114228178A (en) * 2021-12-16 2022-03-25 南通天维机械设备有限公司 Medical plastic bag heat sealing die and using method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114228178A (en) * 2021-12-16 2022-03-25 南通天维机械设备有限公司 Medical plastic bag heat sealing die and using method thereof
CN114228178B (en) * 2021-12-16 2023-12-12 南通靖航信息科技有限公司 Medical plastic bag heat sealing die and application method thereof

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Application publication date: 20210525