Powder material feeding bag

Abstract

The invention discloses a powder material feeding and filling bag, which belongs to the technical field of packaging, and comprises a bag body, the bag body comprises two membranes which are mutually aligned and overlapped, and the edges of the two membranes are constructed through double-layer heat sealing to obtain the bag body; a feeding port is formed in the top of the bag body, a discharging port is formed in the bottom of the bag body, transverse hanging rods are fixed to the portions, located on the two sides of the feeding port, of the bag body, and each transverse hanging rod is provided with a hanging hole formed in the bag body. A sealing clamp for sealing the discharging opening is arranged at the discharging opening, and an elastic piece is further arranged at the discharging opening and used for storing elastic force enabling the discharging opening to be opened under clamping of the sealing clamp. Through the arrangement of the transverse lifting rod and the lifting hole, the lifting force can be dispersed through the transverse lifting rod when the throwing and filling bag is lifted, and the bag body is prevented from being broken in the lifting process. In addition, through the arrangement of a sealing clamp and an elastic piece, after the sealing clamp is opened, the two discharging pieces can be separated from each other under the elastic force action of the elastic piece, then the discharging opening of the bag body is automatically opened, and therefore powder discharging is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of packaging, and in particular to a powder material filling bag. Background Art

[0002] In order to prevent leakage, existing powder material packaging bags are usually made of film materials, and a discharge port and a feed port are arranged on the manufactured bag body.

[0003] For bags with large packaging volume, in order to prevent the bag from tearing during lifting, multiple slings are usually fixed on the bag, and the hook is connected to multiple slings at the same time during lifting, so that the weight of the bag is dispersed through multiple slings to avoid excessive local pulling force on the bag. Although the sling can increase the connection area with the bag and reduce the local force on the bag, the sling with a longer length will not only increase the cost, but also increase the production cost when connecting the sling to the bag.

[0004] Usually, the slings are connected to the surface of the bag body by bonding or sewing. This connection method may fail or even fall off after long-term use. When a sling falls off, the lifting balance of the bag body is difficult to maintain, and it may even tip over during the lifting process.

[0005] The discharge port of existing powder material packaging bags is usually closed with a rolled belt or an inelastic tie, which is closed by shrinking the film material at the discharge port, but this may cause the film material to shrink insufficiently, leading to leakage. When unloading, the rolled belt or tie can be untied, but due to the long-term contraction of the film material, a dead point is formed, which may cause the discharge port to be unable to open temporarily after the rolled belt or tie is untied, especially when the powder material contained in the bag has a low density or a light overall weight. Summary of the invention

[0006] In view of the problems in the prior art that the slings provided on the powder material packaging bags for lifting are difficult to manufacture and easily fail, and the discharge port is difficult to close and open, the purpose of the present invention is to provide a powder material charging bag to at least partially solve the above problems.

[0007] To achieve the above object, the technical solution of the present invention is: A powder material loading bag comprises a bag body, the bag body comprises two aligned and stacked film sheets, the edges of the two film sheets are formed by a double-layer heat-sealed structure to obtain the bag body; a feed port is provided at the top of the bag body, and a discharge port is provided at the bottom, horizontal suspension rods are fixed to the bag body on both sides of the feed port, and each of the horizontal suspension rods is provided with a suspension hole opened on the bag body; a sealing clamp is provided at the discharge port to close it, and an elastic member is also provided at the discharge port, and the elastic member is used to store the elastic force for opening the discharge port under the clamping of the sealing clamp; the horizontal suspension rod is closed therein when the two film sheets are double-layer heat-sealed, the suspension hole is opened on the heat-sealed edges of the two film sheets, and the suspension hole is located on the lower side of the horizontal suspension rod.

[0008] In some preferred embodiments, the elastic member is in the shape of an arc-shaped long strip and is fixedly arranged along a direction perpendicular to the discharge direction of the discharge port.

[0009] In some preferred embodiments, there are two elastic members which are fixed on the two diaphragms in an opposite manner.

[0010] In some preferred embodiments, the length of the elastic member is equal to half of the circumference of the discharge port.

[0011] In some preferred embodiments, both clamp arms of the sealing clamp are provided with clamping grooves matched with the elastic member.

[0012] In some preferred embodiments, the bag body is further provided with a flushing port, which is closed by a detachable flushing cover.

[0013] In some preferred embodiments, the membrane sheet includes a sheet body, a feed sheet arranged on the top of the sheet body, and a discharge sheet arranged on the bottom of the sheet body, the top side of the two feed sheets is left blank during double-layer heat sealing to form the feed port, and the bottom side of the two discharge sheets is left blank during double-layer heat sealing to form the discharge port.

[0014] In some preferred embodiments, the connection between the feed sheet and the sheet body, and the connection between the discharge sheet and the sheet body are both processed with arc or circular transition.

[0015] In some preferred embodiments, the lower portion of the sheet body is tapered to facilitate powder unloading.

[0016] By adopting the above technical scheme, the beneficial effects of the present invention are as follows: the present invention arranges the horizontal hanging rod and the hanging hole, so that when the loading bag is hoisted, the pulling force of the hook will be dispersed by the horizontal hanging rod, avoiding the situation of excessive pulling force locally, and effectively preventing the bag from breaking during the hoisting process; and compared with the method of several slings, the horizontal hanging rod and the hanging hole in the present invention have obvious advantages in terms of both manufacturing cost and use process. In addition, the present invention arranges the sealing clamp and the elastic member, so that after opening the sealing clamp, the elastic force of the elastic member can separate the two discharge pieces from each other, and then automatically open the discharge port of the bag, so as to facilitate the unloading of powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the structure of the diaphragm in the present invention.

[0019] Figure 3 It is a schematic diagram of the installation of the elastic member on the discharge sheet in the present invention.

[0020] Figure 4 It is a schematic cross-sectional view of the clamp arm and the spring piece of the sealing clamp in the present invention.

[0021] In the figure: 1-bag body, 11-sheet body, 12-feed sheet, 13-discharge sheet, 14-shoulder, 2-feed port, 3-discharge port, 4-horizontal hanging rod, 5-hanging hole, 6-sealing clip, 7-spring sheet, 8-flushing port. DETAILED DESCRIPTION

[0022] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0023] It should be noted that, in the description of the present invention, the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are descriptions of the structure of the present invention based on the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0024] The "first" and "second" in this technical solution are only used to distinguish the names of the same or similar structures, or corresponding structures with similar functions, and are not an arrangement of the importance of these structures, nor do they have a ranking, comparison of size, or other meanings.

[0025] In addition, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, the connection 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 an indirect connection through an intermediate medium, or it can be a connection between the two structures. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood based on the overall idea of ​​the present invention and the specific context of the present solution.

[0026] Example

[0027] A powder material feeding bag, such as Figure 1 As shown, it includes a bag body 1, which includes two aligned and stacked membranes. The material of the membranes is configured as a high-density antistatic membrane material, which has the effect of reducing the residual powder discharge. The edge of the two membranes is double-layered and heat-sealed to obtain the bag body 1. The heat-sealed area at the edge of the membrane (called the heat-sealed edge) has a certain width, thereby strengthening the structural strength of the connection of the bag body 1 and the overall load-bearing capacity. When the edge of the two membranes is double-layered and heat-sealed, two gaps (called blanks) are reserved to form a feed port 2 at the top of the bag body 1 and a discharge port 3 at the bottom of the bag body 1.

[0028] Specifically, if Figure 2 As shown, the diaphragm includes a sheet body 11, a feed sheet 12 and a discharge sheet 13, which are integrally formed, that is, the diaphragm is an integral structure. The sheet body 11 is generally rectangular in shape, and the lower two sides of the sheet body 11 present a certain taper and the small sections are oriented, so that the powder contained in the bag body 1 formed by the diaphragm is easier to discharge. In addition, the connection between the feed sheet 12 and the sheet body 11, and the connection between the discharge sheet 13 and the sheet body 11 are both arc-shaped or circular transition treatments, so that sharp corners can be avoided at the corners of the bag body 1, which does not hinder the discharge of powder and can improve the structural stability of the bag body 1.

[0029] The feed sheet 12 is arranged at the middle position of the top of the sheet body 11, and the discharge sheet 13 is arranged at the middle position of the bottom of the sheet body 11. When double-layer heat sealing is performed, only the top positions of the two feed sheets 12 are left blank to form the feed port 2 of the bag body 1, and only the bottom positions of the two discharge sheets 13 are left blank to form the discharge port 3 of the bag body 1.

[0030] The feed sheet 12 and the discharge sheet 13 both protrude from the sheet body 11, so that the feed part formed by the two feed sheets 12 has a certain length dimension, thereby facilitating the filling of powder. Correspondingly, the discharge part constructed by the two discharge sheets 13 also has a certain length dimension, thereby facilitating the connection with other containers during unloading.

[0031] Due to the presence of the feed sheet 12, when the edges of the two film sheets are double-layered heat-sealed, two shoulders 14 are formed on the top of the sheet body 11. The two shoulders 14 are respectively located on both sides of the feed sheet 12. The shoulders 14 are actually part of the heat-sealed edge, which is obtained by the edge of the film through the double-layered heat-sealed structure.

[0032] The two shoulders 14 are fixed with horizontal suspension rods 4, which can be fixed in various ways, such as bonding or sewing, or the horizontal suspension rods 4 can be placed between the two membranes in advance, and heat-sealed in the membranes when the membranes are double-layered. Hanging holes 5 are also provided on the two shoulders 14, that is, the hanging holes 5 are also provided on the heat-sealed edges, and the hanging holes 5 are located on one side below the horizontal suspension rod 4, and the hanging holes 5 are approximately located in the middle of the horizontal suspension rod 4.

[0033] It also includes a sealing clip 6, which includes two clamping arms, one end of which is pivotally connected, and the other end is usually detachably connected by a buckle. When the other ends of the two clamping arms are connected by the buckle, the two clamping arms approach each other and clamp the two discharge pieces 13 constituting the discharge port 3 together, thereby closing the discharge port 3 of the bag body.

[0034] It is easy to understand that since the diaphragm is a film material, its shape can be easily changed. When the discharge port 3 of the bag body 1 is using its discharge function, it is expected that the discharge port 3 can remain roughly circular. In order to achieve this goal, the bag body 1 is also provided with an elastic member 7, and there are two elastic members 7 which are respectively fixed on the outer surfaces of the two discharge sheets 13.

[0035] The elastic member 7 is in an arc-shaped strip structure, and is fixedly arranged along a direction perpendicular to the discharge direction of the discharge port 3. When the two elastic members 7 are not subjected to external forces, the two elastic members 7 maintain their arc shape, so that the two discharge pieces 13 are separated from each other and form a tubular structure, that is, the discharge port 3 of the bag body 1 is opened under the action of the elastic member 7. Figure 3 shown.

[0036] It is easy to understand that the length of the elastic member 7 is approximately equal to half of the circumference of the discharge port 3, that is, the length of the elastic member 7 is approximately equal to the width of the discharge sheet 13 minus the width of the heat-sealed edge, so that the discharge port 3 of the bag body can be opened to the maximum extent without being constrained by the elastic member 7.

[0037] In this embodiment, Figure 4As shown, the two clamping arms of the sealing clamp 6 are provided with slots adapted to the elastic member 7, so that the sealing clamp 6 can be clamped on the two elastic members 7, so that the two elastic members 7 can be pressed into a straight strip structure while sealing, and the position of the sealing clamp 6 can be limited by the elastic member 4. When the elastic member 7 is clamped by the sealing clamp 6 and is in a straight strip structure, the elastic member 7 will correspondingly store the elastic force for opening the discharge port 3.

[0038] Among them, the fixing position of the elastic member 7 on the discharge sheet 13 is preferably on the side close to the sheet body 11, so that the discharge sheet 13 has a certain length on the side below the elastic member 7. This length is suitable for being easily inserted into the opening of the material holding or ingredient container after being folded and contracted during unloading.

[0039] In this embodiment, a flushing port 8 is provided on the bag body 1, for example, the flushing port 8 is provided on the feed sheet 12, and the flushing port 8 is closed by a detachable flushing cover (not shown in the figure), for example, a joint pipe is sealed and fixedly installed at the flushing port, and the flushing cover is threadedly connected to the joint pipe. When flushing, the flushing cover is unscrewed, and then the flushing pipe is connected to flush the inside of the bag body, so that the powder therein is completely flushed out.

[0040] The use process of the powder material charging bag provided in the embodiment of the present invention is as follows: When in use, the discharging part composed of two discharging pieces 13 is closed by the sealing clamp 6, and the elastic member 7 is also compressed to store elastic force; the powder material is fed into the bag body 1 through the feeding part composed of two feeding pieces 12 until it is full or reaches the specified amount; the tops of the two feeding pieces 12 are sealed by heat sealing, that is, the feeding port 2 of the bag body is closed. At this time, the bag body 1 filled with powder is in a closed state, and can be aligned for hoisting through the hanging holes 5 opened on the bag body 1. During hoisting, the pulling force of the hook will be transmitted to the horizontal hanging rod 4, and then transmitted to the shoulder 14 of the bag body 1 by the horizontal hanging rod 4, so that a larger range of heat-sealed area is stressed, avoiding the situation of excessive pulling force locally, and effectively preventing the bag body 1 from breaking during the hoisting process.

[0041] When unloading, the bag body 1 is hung above the material holding or ingredient container, and the discharge portion composed of the two discharge pieces 13 is partially inserted into the opening of the material holding or ingredient container, and then the flushing cover is opened, and the sealing clamp 6 is opened. After the sealing clamp 6 is opened, the elastic member 7 returns to an arc or circular shape, so that the two discharge pieces 13 are separated from each other, and then the discharge port 3 of the bag body 1 is opened, and the powder material in the bag body 1 enters the material holding or ingredient container through the discharge port 3.

[0042] When the powder material in the bag body 1 is roughly unloaded and the powder material is unloaded into the batching container, the flushing pipe can be connected to the flushing port 8 to flush the bag body 1 so that the small amount of powder material remaining in the bag body 1 can also be fully utilized.

[0043] Compared with the prior art, in order to achieve hoisting, the bag body 1 in the present invention only needs to heat-seal two horizontal hanging rods 4 in the bag body 1 during the manufacturing process, and then open two hanging holes 5, without going through complicated connections, so that the bag body 1 can have a hoisting function, and the horizontal hanging rods 4 can disperse the force to various parts of the shoulder 14 of the bag body 1 during hoisting, thereby effectively preventing the bag body 1 from being torn during hoisting. Through the setting of the sealing clamp 6 and the elastic member 7, the two discharge pieces 13 can be neatly attached together during sealing, thereby avoiding the appearance of leakage gaps, and the elastic member 7 can open the discharge port 3 in time during unloading.

[0044] It is easy to understand that the feed port 2 of the bag body 1 can also be closed by the sealing clamp 6 and the elastic member 5. When loading, the sealing clamp 6 is removed to allow the feed port 2 to open under the elastic action of the elastic member 5. After loading is completed, the sealing clamp 6 can be used to close the feed port 2.

[0045] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A powder material filling bag, characterized in that: The bag comprises a bag body, which comprises two aligned and stacked film sheets, and the edges of the two film sheets are formed by a double-layer heat-sealed structure to obtain the bag body; a feed port is provided at the top of the bag body, and a discharge port is provided at the bottom, and horizontal hanging rods are fixed on the bag body on both sides of the feed port, and each of the horizontal hanging rods is provided with a hanging hole opened on the bag body; a sealing clamp is provided at the discharge port to close it, and an elastic member is also provided at the discharge port, and the elastic member is used to store the elastic force for opening the discharge port under the clamping of the sealing clamp; the horizontal hanging rod is closed therein when the two film sheets are double-layer heat-sealed, and the hanging holes are opened on the heat-sealed edges of the two film sheets, and the hanging holes are located on the lower side of the horizontal hanging rod.

2. The powder material loading bag according to claim 1, characterized in that: The elastic member is in the shape of an arc-shaped long strip and is fixedly arranged along a direction perpendicular to the discharge direction of the discharge port.

3. The powder material loading bag according to claim 2, characterized in that: There are two elastic members which are opposite to each other and fixed on the two diaphragms respectively.

4. The powder material loading bag according to claim 3, characterized in that: The length of the elastic member is equal to half of the circumference of the discharge port.

5. The powder material loading bag according to claim 1, characterized in that: The two clamping arms of the sealing clamp are both provided with clamping grooves matched with the elastic member.

6. The powder material loading bag according to claim 1, characterized in that: The bag body is also provided with a flushing port, which is closed by a detachable flushing cover.

7. The powder material loading bag according to claim 1, characterized in that: The membrane sheet includes a sheet body, a feed sheet arranged on the top of the sheet body, and a discharge sheet arranged on the bottom of the sheet body. The top side of the two feed sheets is left blank during double-layer heat sealing to form the feed port, and the bottom side of the two discharge sheets is left blank during double-layer heat sealing to form the discharge port.

8. The powder material loading bag according to claim 7, characterized in that: The connection between the feed sheet and the sheet body, and the connection between the discharge sheet and the sheet body are both processed with arc or circular transition.

9. The powder material loading bag according to claim 7, characterized in that: The lower part of the sheet body is tapered to facilitate powder unloading.

Images