Packaging bag opening mechanism

Abstract

The present invention provides a packaging bag mouth opening mechanism, wherein an inner frame which is pre-inserted into the packaging bag by a support platform is supported by a support platform to open two layers of film that are bonded to the packaging bag of a cylindrical structure, a recessed portion is arranged in the middle of the inner frame along the drawing direction of the packaging bag, a guide limit frame is fixedly arranged on the support platform, a limit head extends out of the inner frame and falls into the recessed portion, a gap for drawing out the packaging bag is reserved between the limit head and the recessed portion, when the packaging bag drags the inner frame to slide, the inner wall of the recessed portion of the inner frame is contacted and matched with the end of the limit head to limit the position, and the inner frame is arranged inside the cylindrical packaging bag so that the packaging bag is kept open at the opening position, and the contact and match between the recessed portion in the middle of the inner frame and the guide limit frame can ensure that the packaging bag is smoothly drawn out and the inner frame is limited at the same time, thereby ensuring the stability of the bag mouth opening structure of the packaging bag during the bagging process of the gypsum line.

Description

Technical Field

[0001] The invention relates to the technical field of building materials, and more particularly to a packaging bag opening propping mechanism. Background Art

[0002] Gypsum line is a house decoration material, mainly used for interior decoration. The surface of the gypsum line can have various patterns. It is practical and beautiful for interior decoration. It has fire prevention, moisture-proof, heat preservation, sound insulation, and heat insulation functions, and can create a luxurious decorative effect.

[0003] Gypsum lines are fragile products and can be easily damaged by external impacts, so they must be protected from damage during handling and transportation. At the same time, gypsum lines also need to be protected from rain or moisture, which will affect the surface finish quality of the gypsum lines. In order to ensure the safety of gypsum lines during transportation and storage, gypsum lines are usually bundled and packaged by stacking after production, and protective films are laid between gypsum lines. The stacked gypsum lines are wrapped in film packaging bags to ensure packaging quality.

[0004] In order to ensure the continuity of the existing gypsum line bagging, the packaging bag adopts a cylindrical structure and is continuously conveyed in the form of a coil. In order to ensure the convenience of pulling the packaging bag each time, it is necessary to ensure that the bag opening is automatically opened. However, due to the thin-walled plastic material of the packaging bag, the edge of the bag is easily automatically closed after the bag opening is opened, which affects the loading of the gypsum line bag.

[0005] Therefore, how to achieve structural stability of the bag opening is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0006] In view of this, the present invention provides a packaging bag opening propping mechanism to achieve structural stability of the packaging bag opening propping mechanism.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A packaging bag opening opening mechanism is used to open the opening of the packaging bag, comprising a support platform for supporting the packaging bag and guiding the pumping and sliding movement of the packaging bag;

[0009] An internal frame resting on the tabletop of the support table and extending into the interior of the packaging bag, wherein a recessed portion is provided in the middle of the internal frame along the direction in which the packaging bag is withdrawn;

[0010] A guide limit frame fixedly mounted on the support platform and used to limit the sliding movement of the built-in frame along the direction of drawing out the packaging bag, wherein a limit head extending from the guide limit frame falls into the recessed portion and contacts and cooperates with the inner wall of the recessed portion;

[0011] A gap for drawing out the packaging bag is reserved between the limiting head and the recessed portion.

[0012] Preferably, in the above-mentioned packaging bag opening propping mechanism, the built-in frame comprises a supporting cylinder made of a thin-walled material, and arc guide walls for protecting the inner wall of the packaging bag are arranged at both ends of the supporting cylinder along the packaging bag withdrawal direction.

[0013] Preferably, in the above-mentioned packaging bag opening opening mechanism, the built-in frame is a built-in frame made of stainless steel.

[0014] Preferably, in the above-mentioned packaging bag opening propping mechanism, the built-in frame includes a front supporting sphere and a rear supporting sphere arranged front and back along the drawing direction of the packaging bag, and the recessed portion is a sphere connecting portion connecting the front supporting sphere and the rear supporting sphere.

[0015] Preferably, in the above-mentioned packaging bag opening propping mechanism, the ball connecting portion is a ball connecting column symmetrically connected between the front supporting ball and the rear supporting ball.

[0016] Preferably, in the above-mentioned packaging bag mouth opening mechanism, the limit head includes a first guide roller and a second guide roller respectively arranged on both sides of the built-in frame in the width direction, and the rolling direction of the first guide roller and the second guide roller is the same as the pulling-out direction of the packaging bag.

[0017] Preferably, in the above-mentioned packaging bag opening opening mechanism, a protective roller located on the top of the built-in frame is further arranged between the first guide roller and the second guide roller.

[0018] Preferably, in the above-mentioned packaging bag opening propping mechanism, a plurality of opening fins for propping open the bag opening of the packaging bag are arranged around the outer wall surface of the front supporting sphere.

[0019] Preferably, in the above-mentioned packaging bag opening propping mechanism, the opening fins are supporting fins made of hard plastic material.

[0020] The packaging bag opening opening mechanism provided by the present invention is used for opening the opening of the packaging bag. When the packaging bag is put on, it is put into the gypsum line bag by rotating and conveying the coiled material. A support platform is arranged between the gypsum line and the packaging bag coiled material. When the packaging bag slides on the table surface of the support platform during the withdrawal process, it is pre-opened to facilitate the insertion of the packaging bag into the gypsum line bag. Considering that the packaging bag is in the form of two layers of film bonded together, an internal frame is arranged on the support platform, which is pre-inserted into the interior of the packaging bag to stretch out the two layers of film bonded together in the tubular structure of the packaging bag.

[0021] Since the built-in frame is located inside the packaging bag, the packaging bag drags the built-in frame to slide in the bagging direction during the withdrawal process. A recessed portion is set in the middle of the built-in frame along the withdrawal direction of the packaging bag, and a guide limit frame is fixed on the support platform. A limit head extends from the guide limit frame, and the limit head falls into the recessed portion. During the sliding process of the built-in frame along the withdrawal direction of the packaging bag, a gap for withdrawing the packaging bag is reserved between the limit head and the recessed portion, and the packaging bag passes between the limit head and the built-in frame. When the built-in frame is dragged to slide, the inner wall of the recessed portion of the built-in frame contacts and cooperates with the end of the limit head. The built-in frame is limited on the support platform through the contact limit between the limit head and the recessed portion. By setting the built-in frame inside the cylindrical packaging bag, the packaging bag is kept open at the opening position, and the contact and cooperation between the recessed portion in the middle of the built-in frame and the guide limit frame ensures that the packaging bag is smoothly withdrawn, and the built-in frame is limited, thereby ensuring the stability of the bag opening structure of the gypsum line during the bagging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A front view of the installation structure of the packaging bag opening opening mechanism provided by the present invention;

[0024] Figure 2 for Figure 1 A top view of the mounting structure of the opening opening mechanism of the middle packaging bag;

[0025] Figure 3 This is a schematic structural diagram of the packaging bag opening opening mechanism provided by the present invention. DETAILED DESCRIPTION

[0026] The invention discloses a packaging bag opening propping mechanism, which realizes the structural stability of the packaging bag opening propping structure.

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figure 1-Figure 3 As shown, Figure 1 A front view of the installation structure of the packaging bag opening opening mechanism provided by the present invention; Figure 2 for Figure 1 A top view of the mounting structure of the opening opening mechanism of the middle packaging bag; Figure 3 This is a schematic structural diagram of the packaging bag opening opening mechanism provided by the present invention.

[0029] The present invention provides a packaging bag opening opening mechanism, which is used for opening the packaging bag. When the packaging bag is put on, the packaging bag is put into the gypsum line bag by rotating and conveying the coil. A support platform 1 is arranged between the gypsum line and the packaging bag coil. The packaging bag is pre-opened when it slides on the table surface of the support platform 1 during the withdrawal process, so that the packaging bag is convenient for being put into the gypsum line bag. Considering that the packaging bag is in the form of two layers of film bonded together, an internal frame 2 is arranged on the support platform 1, which is pre-inserted into the interior of the packaging bag to stretch out the two layers of film bonded to the tubular structure of the packaging bag.

[0030] Since the built-in rack 2 is located inside the packaging bag, the packaging bag drags the built-in rack 2 to slide in the bagging direction during the process of drawing out the packaging bag. A recessed portion is set in the middle of the built-in rack 2 along the direction of drawing out the packaging bag, and a guide limit rack 3 is fixed on the support platform 1. A limit head extends from the guide limit rack 3, and the limit head falls into the recessed portion. During the sliding process of the built-in rack 2 along the direction of drawing out the packaging bag, a gap for drawing out the packaging bag is reserved between the limit head and the recessed portion, and the packaging bag passes between the limit head and the built-in rack. When the built-in rack 2 is dragged to slide, the inner wall of the recessed portion of the built-in rack 2 contacts and cooperates with the end of the limit head, and the built-in rack 2 is limited on the support platform 1 through the contact limit between the limit head and the recessed portion. By arranging the built-in frame 1 inside the cylindrical packaging bag, the packaging bag is kept open in the opening position, and the contact and cooperation between the recessed portion in the middle of the built-in frame 3 and the guide limit frame 3 ensure that the packaging bag is smoothly drawn out while limiting the built-in frame, thereby ensuring the stability of the bag opening structure of the packaging bag during the gypsum line bagging process.

[0031] In a specific embodiment of the present case, the built-in frame 2 includes a support cylinder made of a thin-walled material, and arc guide walls are provided at both ends of the support cylinder along the direction of drawing out the packaging bag to protect the inner wall of the packaging bag. The built-in frame 2 is placed inside the packaging bag, and during the process of drawing out the gypsum line bag, the built-in frame 2 and the inner wall of the packaging bag rub and slide, so the sharp corner structure on the outer surface of the built-in frame 2 should be avoided to ensure the safety of the packaging bag.

[0032] In this embodiment, the built-in frame 2 has a support cylinder structure made of thin-walled material, and the sliding contact surface between the support cylinder and the packaging bag is set as an arc guide arc surface, and the contact surface between the packaging bag and the built-in frame is an arc transition to ensure sliding safety. The thin-walled support cylinder reduces the weight of the built-in frame, and its pressing force on the bottom sliding surface of the packaging bag is small, avoiding the problem of tearing caused by excessive pressing force during the sliding process of the packaging bag.

[0033] Meanwhile, the built-in frame 2 is made of stainless steel. When the built-in frame 2 is pulled out of the packaging bag, it tends to move in the direction of the packaging bag being pulled out. The packaging bag sliding out of the recessed part of the built-in frame 2 is pressed by the limit head of the guide limit frame 3. In order to avoid deformation of the built-in frame in the recessed part after long-term work, which affects the supporting effect of the built-in frame, stainless steel is used to improve the structural stability of the built-in frame after long-term use.

[0034] In a specific embodiment of the present case, the built-in frame 2 includes a front supporting sphere 21 and a rear supporting sphere 22 arranged front and back along the direction of pulling out the packaging bag, and the recessed portion is a sphere connecting portion 23 connecting the front supporting sphere 21 and the rear supporting sphere 22.

[0035] During the process of packing and pulling out the packaging bag, the built-in frame 2 stretches the packaging bag from the double-layer film inner wall bonding state to the cylindrical state, and it has the functions of stretching and stretching the bag in the direction of pulling out the packaging bag. The sliding contact surface between the packaging bag and the built-in frame 2 adopts a curved surface structure to improve the smoothness and safety of opening the packaging bag. It can be understood that the built-in frame with a thin-walled cylindrical structure and the curved surface structure at both ends of the length direction of the built-in frame can produce a flow effect between the built-in frame 2 and the packaging bag, and the structure is better.

[0036] In this embodiment, the built-in frame 2 includes a front supporting sphere 21 and a rear supporting sphere 22 of a spherical structure. The overall pressure bearing capacity of the spherical structure is relatively strong, and it can ensure the stability of its own structure and avoid deformation during the long-term contact and pressure of the limit head. The recessed portion is arranged between the front supporting sphere 21 and the rear supporting sphere 22. The recessed portion can be arranged to directly connect the front supporting sphere 21 and the rear supporting sphere 22 at the connecting position through the inferior arc portion, or it can be arranged as an independent sphere connecting portion 23.

[0037] Preferably, the ball connection part 23 is a ball connection column symmetrically connected between the front supporting ball 21 and the rear supporting ball 22. The ball connection column adopts a ball connection column with a columnar structure, and the front supporting ball 21 and the rear supporting ball 22 are symmetrically connected by the ball connection column, and the ball centers of the two are located on the axis of the ball connection column.

[0038] A spherical connecting column with a columnar structure is adopted. By controlling the length and outer diameter of the spherical connecting column, the limit head can be pressed and matched with the outer wall of the rear supporting sphere 22 and the outer wall of the spherical connecting column at the same time, so as to avoid the limit head colliding with the front supporting sphere 21 and the rear supporting sphere 22 at the same time, causing contact and collision on the connecting end faces of the two and affecting the connection stability between the two.

[0039] In a specific embodiment of the present case, the limit head includes a first guide roller 31 and a second guide roller 32 respectively arranged on both sides of the width direction of the built-in frame, and the rolling direction of the first guide roller 31 and the second guide roller 32 is the same as the direction of drawing out the packaging bag. The built-in frame 2 with a spherical structure at the front and rear will swing and rotate as the packaging bag is drawn out. In order to avoid the limit head from contacting and pressing with the outer wall surface of the front supporting sphere 21 or the rear supporting sphere 22, which affects the smooth drawing out of the packaging bag, the limit head adopts a guide roller structure.

[0040] Specifically, the two spherical structures at the front and rear of the built-in frame 2 are adapted, and the limit heads are located on both sides of the width direction of the built-in frame 2 through the first guide roller 31 and the second guide roller 32. Specifically, the first guide roller 31 and the second guide roller 32 are axially arranged vertically, and their rolling directions are along the pulling-out direction of the packaging bag.

[0041] Then, when the built-in rack 2 swings left and right due to the extraction of the packaging bag, the first guide roller 31 and the second guide roller 32 provide position limits on both sides of the width direction to prevent the excessive swing from affecting the smooth extraction of the packaging bag. At the same time, when the outer wall surface of the rear supporting sphere 22 contacts and presses with the first guide roller 31 or the second guide roller 32 due to the swing of the built-in rack 2, the pulling force of the extraction of the packaging bag drives the guide roller to rotate at the same time, thereby preventing the packaging bag from being broken due to the instantaneous compression force, thereby improving the safety of the packaging bag transportation.

[0042] In a specific embodiment of the present case, a protective roller 33 located at the top of the built-in frame 2 is also arranged between the first guide roller 31 and the second guide roller 32. The front supporting sphere 21 and the rear supporting sphere 22 of the built-in frame 2 both fall on the table of the support platform 1. Due to their thin-walled spherical structures, the traction of the packaging bag easily causes the front and rear spherical structures to be unevenly stressed and swing back and forth. By setting the protective roller 33, which is located between the first guide roller 31 and the second guide roller 32 and above the built-in frame 2, the built-in frame 2 is limited between the support platform 1, the first guide roller 31, the second guide roller 32 and the protective roller 33, and at the same time, the left and right and up and down swinging amplitudes of the built-in frame 2 are limited, further improving the stability of the packaging bag extraction direction.

[0043] In a specific embodiment of the present case, a plurality of opening fins 24 for opening the bag opening of the packaging bag are arranged around the outer wall surface of the front supporting sphere 21. After the packaging bag is packaged once, its open end is opened by the front supporting sphere 21. Due to its flexible material and the thin film structure itself being opened by a double-layer film, the packaging bag is prone to deformation and closure problems at the opening position. By arranging a circle of opening fins 24 around the outer wall surface of the front supporting sphere 21, the opening of the packaging bag is opened and shaped, so as to facilitate the subsequent pulling of the packaging bag. Traction avoidance space for manual traction or mechanical claw traction should be reserved between the opening fins to facilitate the grabbing of the packaging bag.

[0044] Preferably, the opening fin 24 is a supporting fin made of hard plastic material. The hard plastic material avoids scratching the packaging bag, is light in weight, and is easy to replace after long-term use, thereby ensuring the safety of pulling out the packaging bag.

[0045] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A packaging bag opening opening mechanism, used for opening the opening of a packaging bag, characterized in that: It includes a support platform for supporting the packaging bag and guiding the pumping and sliding movement of the packaging bag; An internal frame resting on the tabletop of the support table and extending into the interior of the packaging bag, wherein a recessed portion is provided in the middle of the internal frame along the direction in which the packaging bag is withdrawn; The built-in frame includes a front supporting sphere and a rear supporting sphere arranged front and back along the drawing direction of the packaging bag, and the recessed portion is a sphere connecting portion connecting the front supporting sphere and the rear supporting sphere; A guide limit frame fixedly mounted on the support platform and used to limit the sliding movement of the built-in frame along the direction of drawing out the packaging bag, wherein a limit head extending from the guide limit frame falls into the recessed portion and contacts and cooperates with the inner wall of the recessed portion; A gap for drawing out the packaging bag is reserved between the limiting head and the recessed portion; The limiting head comprises a first guide roller and a second guide roller respectively arranged on both sides of the built-in frame in the width direction, and the rolling direction of the first guide roller and the second guide roller is the same as the pulling direction of the packaging bag; A protective roller located on the top of the built-in frame is also arranged between the first guide roller and the second guide roller; The built-in frame is limited between the support platform, the first guide roller, the second guide roller and the protective roller, and the left-right and up-and-down swinging amplitudes of the built-in frame are limited.

2. The packaging bag opening opening mechanism according to claim 1, characterized in that: The built-in frame comprises a supporting cylinder made of a thin-walled material, and arc guide walls for protecting the inner wall of the packaging bag are arranged at both ends of the supporting cylinder along the direction in which the packaging bag is pulled out.

3. The packaging bag opening opening mechanism according to claim 2, characterized in that: The built-in frame is made of stainless steel.

4. The packaging bag opening opening mechanism according to claim 2, characterized in that: The packaging bag mouth propping-opening mechanism is characterized in that the spherical connecting portion is a spherical connecting column symmetrically connected between the front supporting sphere and the rear supporting sphere; the centers of the front supporting sphere and the rear supporting sphere are located on the axis of the spherical connecting column.

5. The packaging bag opening opening mechanism according to claim 4, characterized in that: A plurality of opening fins for supporting the bag opening of the packaging bag are arranged around the outer wall surface of the front supporting sphere.

6. The packaging bag opening opening mechanism according to claim 5, characterized in that: The opening fins are supporting fins made of hard plastic material.

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