Packaging bag mounting device and method for packaging machine

Abstract

The invention discloses a packaging bag mounting device and method for a packaging machine. The mounting device comprises a packaging machine head, and a pair of longitudinal hot-pressing shafts, a pair of transverse hot-pressing shafts and a pair of cutter shafts are rotationally arranged on the packaging machine head from top to bottom; two end parts of the pair of longitudinal hot-pressing shafts, the pair of transverse hot-pressing shafts and the pair of cutter shafts are respectively in rolling contact, and gaps are respectively arranged among the middle parts; the pair of longitudinal hot-pressing shafts are respectively connected with a motor, and the motor is used for driving the pair of longitudinal hot-pressing shafts to rotate relatively; a packaging bag can be cut to form a width reducing part, and the narrowed width reducing part is arranged in a gap between the middle parts of a pair of longitudinal hot pressing shafts and then passes through a gap between the middle parts of a pair of transverse hot pressing shafts and a pair of cutter shafts in sequence so as to penetrate through a packaging machine head; and the packaging bag is mounted on the packaging machine head in cooperation with hand pulling of the packaging bag by an operator, so that operation is simplified, single-person operation is achieved, and working efficiency and safety are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of packaging, and in particular relates to a packaging bag installation device and an installation method for a packaging machine. Background Art

[0002] At present, the structure of the four-side sealing packaging machine head makes it cumbersome and troublesome to install the packaging bag each time. Since the longitudinal heat pressing wheel of the packaging machine head is tightly matched, the traditional packaging bag installation method is to first insert the front and back packaging bag heads into the tangent of the longitudinal heat pressing wheel, and they need to be close to each other; then start the two motors of the packaging machine head, and drive the packaging bag into the longitudinal gear by the rotation of the longitudinal wheel, and the motor stops; guide the packaging bag head to the middle of the horizontal heat pressing shaft and the cutter shaft and pass through, and at this time, two people are often required to cooperate, one of whom operates the motor and the other feeds and guides the bag; there is also a risk of pressing the hands due to rotating parts, which affects work efficiency and safety. Summary of the invention

[0003] The purpose of the present invention is to provide a packaging bag installation device and installation method for a packaging machine, so as to solve the problems of complicated operation, high manpower requirement, low work efficiency and low operation safety existing in the packaging machine head of the prior art when installing packaging bags, so as to simplify the operation, reduce the required manpower and improve work efficiency and safety.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] In the first aspect, the present invention provides a packaging bag installation device for a packaging machine, including a packaging machine head, on which a pair of longitudinal hot pressing shafts, a pair of transverse hot pressing shafts and a pair of cutting shafts are rotatably arranged from top to bottom; the two end portions of the pair of longitudinal hot pressing shafts, the pair of transverse hot pressing shafts and the pair of cutting shafts are in rolling contact respectively, and gaps are respectively arranged between the middle portions; the pair of longitudinal hot pressing shafts are respectively connected to motors, and the motors are used to drive the pair of longitudinal hot pressing shafts to rotate relative to each other.

[0006] Preferably, a pair of the transverse hot pressing shafts are respectively connected to motors.

[0007] Preferably, the packaging machine head is rotatably provided with at least one pair of longitudinal wheels, and the longitudinal wheels are arranged above the longitudinal hot pressing axis.

[0008] Preferably, the longitudinal wheels are arranged in three pairs, and the three pairs of longitudinal wheels are distributed in a U-shaped structure, and the side walls on both sides of the U-shaped structure are inclined to form an inverted eight-shaped structure.

[0009] Preferably, outer walls of the middle parts of the pair of longitudinal hot pressing shafts, the pair of transverse hot pressing shafts and the pair of cutting shafts are all provided with annular grooves.

[0010] In a second aspect, the present invention provides a packaging bag installation method for a packaging machine, which is implemented based on the packaging bag installation device for a packaging machine as described in the first aspect of the present invention, and includes the following steps:

[0011] Cutting the packaging bag: cutting off a portion of both sides of the packaging bag in the longitudinal direction to form a reduced width portion of the packaging bag, wherein the width of the reduced width portion is less than or equal to the gap between the pair of longitudinal hot pressing shafts, the pair of transverse hot pressing shafts and the pair of cutting shafts;

[0012] Loading into the packaging bag: pass the reduced width portion of the packaging bag through the slit; the operator pulls the packaging bag downward under the pair of cutter shafts with one hand, and turns on the motor with the other hand, so that the motor drives the pair of longitudinal hot pressing shafts to rotate relative to each other, guiding the end of the packaging bag to move downward.

[0013] Preferably, when the packaging bag is loaded, the motor is stopped after the width-reduced portion of the packaging bag is guided down.

[0014] Preferably, after being packed into the packaging bag, the following steps are performed:

[0015] Heat-sealing packaging: The heat-sealing mechanism of the packaging machine is started. After the temperature of the heat-sealing mechanism reaches the set heat-sealing temperature, the packaging of the packaging bag begins.

[0016] Preferably, during heat-sealing packaging, an empty packaging bag is first heat-sealed to heat-press the subsequent packaging bags laterally.

[0017] Preferably, when cutting the packaging bag, a portion of each of the two longitudinal sides of the packaging bag is cut off from the end portion to form the width-reduced portion at the end portion of the packaging bag;

[0018] When the package is put into a packaging bag, the end of the width-reduced portion is passed through the slit.

[0019] The packaging bag installation device and installation method for a packaging machine provided by the present invention have the following beneficial effects:

[0020] 1. The packaging bag installation method for a packaging machine of the present invention adopts the packaging bag installation device for a packaging machine of the present invention, cuts the packaging bag to form a width-reduced portion, and installs the narrowed width-reduced portion into the gap between the middle portions of a pair of longitudinal hot pressing shafts, and then passes through the gap between the middle portions of a pair of transverse hot pressing shafts and a pair of cutting shafts in sequence, thereby passing through the packaging machine head; then the packaging bag is installed on the packaging machine head by hand-pulling the packaging bag by the operator, thereby realizing the feeding-type safe loading of the packaging bag on the packaging machine head; the bag feeding method is changed from the method of inserting the packaging bag with both hands in the prior art to the method of pulling down the packaging bag with one hand, which can simplify the operation, realize single-person operation, reduce the required manpower, save time and effort, and improve work efficiency; and the bag feeding method of the pull-down method is safe and not easy to press the hand, thereby improving safety.

[0021] 2. The packaging bag installation method for the packaging machine of the present invention can be used to set a longitudinal wheel through the packaging bag installation device for the packaging machine of the present invention. The packaging bag is first tensioned by the longitudinal wheel, and then the packaging bag is guided and pulled down and installed on the packaging machine head, which helps to avoid wrinkling of the packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of a packaging bag installation device for a packaging machine provided by one embodiment of the present invention.

[0023] Figure 2 It is a schematic diagram of a packaging bag and a width reducing portion in a packaging bag installation method for a packaging machine provided in one embodiment of the present invention.

[0024] Figure 3 It is a flow chart of a method for installing a packaging bag for a packaging machine provided by one embodiment of the invention.

[0025] Reference numerals in the figures:

[0026] 100 is a packaging bag, 101 is a width reduction portion, 102 is a front side, 103 is a back side, 104 is a packaging bag roll, 1 is a packaging machine head, 110 is a longitudinal hot pressing shaft, 120 is a transverse hot pressing shaft, 130 is a cutting shaft, 140 is a longitudinal wheel, 151 is a groove, DETAILED DESCRIPTION

[0027] The present invention is further described in detail below through the accompanying drawings and specific embodiments.

[0028] Embodiment 1

[0029] Please refer to Figure 1The present embodiment provides a packaging bag installation device for a packaging machine, including a packaging machine head 1, on which a pair of longitudinal hot pressing shafts 110, a pair of transverse hot pressing shafts 120 and a pair of cutting knife shafts 130 are rotatably arranged from top to bottom; the two end portions of the pair of longitudinal hot pressing shafts 110, the pair of transverse hot pressing shafts 120 and the pair of cutting knife shafts 130 are respectively in rolling contact, and gaps are respectively arranged between the middle portions; the pair of longitudinal hot pressing shafts 110 are respectively connected to motors, and the motors are used to drive the pair of longitudinal hot pressing shafts 110 to rotate relative to each other.

[0030] Specifically, the packaging machine head 1 is provided with a machine head plate, and a pair of longitudinal hot pressing shafts 110, a pair of transverse hot pressing shafts 120 and a pair of cutting shafts 130 are symmetrically rotatably mounted on the machine head plate and are perpendicular to the machine head plate.

[0031] In one embodiment, a pair of transverse hot pressing shafts 120 are respectively connected to motors, and the motors are used to drive the pair of transverse hot pressing shafts 120 to rotate relative to each other.

[0032] In one embodiment, the packaging machine head 1 is rotatably provided with at least one pair of longitudinal wheels 140, and the longitudinal wheels 140 are arranged above the longitudinal heat pressing shaft 110. The longitudinal wheels 140 are used to contact the packaging bag 100 to tighten and guide the packaging bag 100 to move downward under the action of the pair of longitudinal heat pressing shafts 110.

[0033] Specifically, at least one pair of longitudinal wheels 140 , a pair of longitudinal hot pressing shafts 110 , a pair of transverse hot pressing shafts 120 and a pair of cutting shafts 130 are symmetrically arranged from top to bottom.

[0034] The vertical wheel 140 is rotatably mounted on the machine head plate and is perpendicular to the machine head plate.

[0035] Specifically, three pairs of vertical wheels 140 are provided, and the three pairs of vertical wheels 140 are distributed in a U-shaped structure, and the side walls of the U-shaped structure are inclined to form an inverted eight-shaped structure. Among the three pairs of vertical wheels 140, the outermost and innermost pairs of vertical wheels 140 are used to contact the bottom of the packaging bag 100, and the middle pair of vertical wheels 140 is used to contact the top of the packaging bag, so as to be more conducive to tensioning and guiding the packaging bag 100 to move downward.

[0036] Specifically, the outer walls of the middle parts of the pair of longitudinal hot pressing shafts 110, the pair of transverse hot pressing shafts 120 and the pair of cutter shafts 130 are all provided with an annular groove 151. The groove 151 reduces the diameter of the middle parts of the pair of longitudinal hot pressing shafts 110, the pair of transverse hot pressing shafts 120 and the pair of cutter shafts 130, which is conducive to forming a gap between the middle parts.

[0037] The cutter shaft 130 is used to connect the cutter to cut the continuous packaging bag roll 104 into individual packaging bags 100 .

[0038] The packaging bag rolls 104 are provided in a pair and are symmetrically arranged above the packaging machine head 1. The packaging bag 100 includes a front side 102 and a back side 103.

[0039] Embodiment 2

[0040] Please refer to Figures 1 to 3 A packaging bag installation method for a packaging machine is implemented based on the packaging bag installation device for a packaging machine as described in Example 1, and includes the following steps:

[0041] Step S1, cutting the packaging bag: cutting off a portion of each of the longitudinal sides of the packaging bag 100 to form a width-reduced portion 101 of the packaging bag 100, wherein the width of the width-reduced portion 101 is less than or equal to the gap between the pair of longitudinal hot pressing shafts 110, the pair of transverse hot pressing shafts 120 and the pair of cutting shafts 130;

[0042] Step S2, loading into the packaging bag: pass the width-reduced portion 101 of the packaging bag 100 through the gap; the operator pulls the packaging bag 100 downward under the pair of cutter shafts 130 with one hand, and turns on the motor with the other hand, so that the motor drives the pair of longitudinal hot pressing shafts 110 to rotate relative to each other, and guides the end of the packaging bag 100 to move downward.

[0043] When loading the packaging bag in step S2, the width-reduced portion 101 of the packaging bag 100 is passed through the gap between the middle parts of a pair of longitudinal hot pressing shafts 110, the gap between the middle parts of a pair of transverse hot pressing shafts 120, and the gap between the middle parts of a pair of cutting shafts 130 in sequence. Figure 1 In the figure, the hollow arrow direction is the bag pulling direction.

[0044] Specifically, when the packaging bag is loaded in step S2, after the width reduction portion 101 of the packaging bag 100 is guided down, the motor is stopped.

[0045] In one embodiment, after packaging, the following steps are performed:

[0046] Step S3, heat-sealing packaging: start the heat-sealing mechanism of the packaging machine, and after the temperature of the heat-sealing mechanism reaches the set heat-sealing temperature, start packaging the packaging bag 100.

[0047] Specifically, during the heat-sealing packaging in step S3, an empty packaging bag 100 is first heat-sealed to press the subsequent packaging bags 100 laterally with heat to prevent leakage of the subsequent packaging bags 100 after being filled with liquid.

[0048] Specifically, when cutting the packaging bag in step S1, a portion of each of the two longitudinal sides of the packaging bag 100 is cut off from the end, so as to form a width-reduced portion 101 at the end of the packaging bag 100;

[0049] When loading the packaging bag in step S2, the end of the width-reduced portion 101 is passed through the slit. The operator pulls the end of the packaging bag 100 downward under the pair of cutter shafts 130 with one hand, and turns on the motor with the other hand, so that the motor drives the pair of longitudinal heat pressing shafts 110 to rotate relative to each other, thereby facilitating the downward movement of the end of the packaging bag 100.

[0050] In one embodiment, when loading the packaging bag in step S2, the packaging bag 100 is first passed through and contacts the vertical wheel 140, and then the width-reduced portion 101 of the packaging bag 100 is passed through the slit.

[0051] Specifically, the width-reduced portion 101 of the packaging bag 100 is first passed through from below and contacts the outermost pair of vertical wheels 140, passed through from above and contacts the middle pair of vertical wheels 140, and passed through from below and contacts the innermost pair of vertical wheels 140, and then the width-reduced portion 101 is passed through each gap in turn.

[0052] Specifically, when cutting the packaging bag in step S1, a portion of each longitudinal side of the packaging bag 100 is symmetrically cut off in a cold state, and a width reduction portion 101 is symmetrically formed at the end of the packaging bag 100; it is convenient to insert the width reduction portion 101 into each gap.

[0053] When loading the packaging bag in step S2, after the width-reduced portion 101 of the packaging bag 100 passes through the gap, the operator pulls down the lower ends of the front side 102 and the back side 103 of the packaging bag 100 with one hand, and can set the resistance when the width of the packaging bag 100 changes the transition position when passing through a pair of longitudinal hot pressing shafts 110.

[0054] Specifically, when cutting the packaging bag in step S1, the packaging bag 100 is cut at both longitudinal sides by scissors to form the width reduction portion 101. The scissors are made of stainless steel, which is conducive to keeping the packaging bag 100 clean.

[0055] The length and width of the reduced width portion 101 were measured by a tape measure. The reduced width portion 101 had a length of 300 mm and a width of 60 mm. The graduation length of the tape measure was 500 mm.

[0056] The above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

[0057] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0059] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

Claims

1. A packaging bag installation device for a packaging machine, characterized in that: The packaging machine head comprises a pair of longitudinal hot pressing shafts, a pair of transverse hot pressing shafts and a pair of cutting shafts which are rotatably arranged from top to bottom; The two end portions of a pair of the longitudinal hot pressing shafts, a pair of the transverse hot pressing shafts and a pair of the cutting knife shafts are in rolling contact respectively, and gaps are respectively arranged between the middle portions; the pair of the longitudinal hot pressing shafts are respectively connected to motors, and the motors are used to drive the pair of the longitudinal hot pressing shafts to rotate relative to each other.

2. The packaging bag installation device for a packaging machine according to claim 1, characterized in that: A pair of transverse hot pressing shafts are respectively connected to motors.

3. The packaging bag installation device for a packaging machine according to claim 1, characterized in that: The packaging machine head is rotatably provided with at least one pair of longitudinal wheels, and the longitudinal wheels are arranged above the longitudinal hot pressing axis.

4. The packaging bag installation device for a packaging machine according to claim 3, characterized in that: The longitudinal wheels are arranged in three pairs, and the three pairs of longitudinal wheels are distributed in a U-shaped structure, and the side walls on both sides of the U-shaped structure are inclined to form an inverted eight-shaped structure.

5. The packaging bag installation device for a packaging machine according to any one of claims 1 to 4, characterized in that: The outer walls of the middle parts of a pair of longitudinal hot pressing shafts, a pair of transverse hot pressing shafts and a pair of cutting knife shafts are all provided with annular grooves.

6. A packaging bag installation method for a packaging machine, characterized in that: The packaging bag installation device for a packaging machine according to any one of claims 1 to 5 is implemented, comprising the following steps: Cutting the packaging bag: cutting off a portion of both sides of the packaging bag in the longitudinal direction to form a reduced width portion of the packaging bag, wherein the width of the reduced width portion is less than or equal to the gap between the pair of longitudinal hot pressing shafts, the pair of transverse hot pressing shafts and the pair of cutting shafts; Loading into the packaging bag: pass the reduced width portion of the packaging bag through the slit; the operator pulls the packaging bag downward under the pair of cutter shafts with one hand, and turns on the motor with the other hand, so that the motor drives the pair of longitudinal hot pressing shafts to rotate relative to each other, guiding the end of the packaging bag to move downward.

7. The packaging bag installation method for a packaging machine according to claim 6, characterized in that: When the packaging bag is loaded, the motor is stopped after the width-reduced portion of the packaging bag is guided down.

8. The packaging bag installation method for a packaging machine according to claim 7, characterized in that: After packaging, proceed as follows: Heat-sealing packaging: The heat-sealing mechanism of the packaging machine is started. After the temperature of the heat-sealing mechanism reaches the set heat-sealing temperature, the packaging of the packaging bag begins.

9. The packaging bag installation method for a packaging machine according to claim 8, characterized in that: During heat-sealing packaging, an empty packaging bag is first heat-sealed to heat-press the subsequent packaging bags in the transverse direction.

10. The packaging bag installation method for a packaging machine according to any one of claims 6 to 9, characterized in that: When cutting the packaging bag, a portion is cut off from the ends of both longitudinal sides of the packaging bag to form the width-reduced portion at the ends of the packaging bag; When the package is put into a packaging bag, the end of the width-reduced portion is passed through the slit.

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