Plastic woven bag sealing device

Abstract

The utility model relates to the technical field of woven bag production, in particular to a plastic woven bag sealing device which comprises a base, a supporting seat is fixedly installed on the base, a metal heating strip is fixedly installed on the supporting seat, a pressing plate is installed on the base through an electric control air cylinder, a rectangular block is fixedly installed on the base, and the rectangular block is fixedly installed on the base. A cavity is formed in the rectangular block, a plurality of gas nozzles are installed on the rectangular block, a sealing plate is installed in the cavity in a sealed and sliding mode, a plurality of first telescopic springs are fixedly installed on the lower surface of the sealing plate, and a transmission assembly is arranged on the rectangular block. According to the utility model, gas can be continuously blown out to the metal heating strip after power failure, the surface temperature of the metal heating strip is taken away, a rapid cooling effect is achieved, the metal heating strip is prevented from being in a high-temperature state for a long time, and the service life of the metal heating strip is effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to weaving bag production technical field especially relates to a plastic woven bag sealing device. BACKGROUND

[0002] Plastic woven bag generally refers to woven bag. Woven bag, also known as snake skin bag, is a kind of plastic bag, which is used for packaging, and its raw material is generally polyethylene, polypropylene and various chemical plastic raw materials. When sealing, plastic woven bags are mostly hot-pressed into shape. During hot-pressing, the bag opening of the plastic woven bag is heated and sealed by a heated metal heating strip.

[0003] However, when continuously sealing the bag opening of the plastic woven bag, the metal heating strip is powered on to heat. After sealing is completed, the metal heating strip is powered off. However, the surface temperature of the metal heating strip after power-off is difficult to reduce quickly. The metal heating strip in a high-temperature state will deform and reduce its hardness, thereby reducing the service life of the metal heating strip. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the shortcomings in the prior art and provides a plastic woven bag sealing device.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A plastic woven bag sealing device comprises a base, a support seat fixedly installed on the base, a metal heating strip fixedly installed on the support seat, a power supply assembly for supplying power to the metal heating strip provided on the base, an electric control cylinder installed on the base through a mounting bracket, and a pressing plate fixedly installed on the output end of the electric control cylinder. A rectangular block is fixedly installed on the base, and the rectangular block is located on one side of the support seat. A cavity is formed in the rectangular block. A plurality of gas nozzles are installed on the rectangular block and are in communication with the cavity. One end of each of the plurality of gas nozzles points to the metal heating strip. A sealing plate is sealingly and slidingly installed in the cavity. A plurality of first extension springs are fixedly installed on the lower surface of the sealing plate. One end of each of the plurality of first extension springs is fixedly connected to the inner wall of the cavity. A transmission assembly is provided on the rectangular block for driving the sealing plate to move vertically downward. Two moving holes are formed in the upper surface of the rectangular block and are in communication with the cavity. The transmission assembly comprises two moving rods slidingly installed in the two moving holes in a vertical manner and two stop blocks fixedly installed on the side surface of the pressing plate. One end of each of the two moving rods is fixedly connected to the sealing plate. The two stop blocks are located directly above the two moving rods, respectively.

[0007] In order to better achieve the above object, the utility model discloses further technical scheme: the power supply component includes fixed installation on the base outside power supply and two respectively with outside power supply positive and negative pole connection's conductive wire, two the conductive wire away from outside power supply's one end is all with metal heating strip's one end fixed connection, the outside power supply electric connection has pressure control switch, the pressing plate one end is equipped with for controlling pressure control switch and starts the pressing assembly, the pressing assembly includes fixed installation in the pressing plate one end's mounting block, through the elastic part sliding installation on the mounting block's top rod and fixed installation in the top rod lower extreme's rubber block, the rubber block is located the right below pressure control switch.

[0008] In order to better achieve the above object, the utility model discloses further technical scheme: the mounting block is opened with round hole, the top rod vertical sliding installation is in the round hole, the elastic part includes fixed installation in the top rod upper extreme's limit block and the second telescopic spring of casing in the top rod, the second telescopic spring's both ends are fixed connection with mounting block and rubber block respectively.

[0009] The utility model discloses the beneficial effect is: can continuously blow out gas to the metal heating strip after power failure, takes away the temperature on the metal heating strip surface, plays the role of quick cooling, avoids the metal heating strip long -term in high temperature state, effectively improves the service life of metal heating strip, through the mutual cooperation of pressing assembly and pressure control switch, can automatically start outside power supply, thereby the power -on and power -off of metal heating strip are realized automatically, and the operation is simple and convenient. ACCURACY OF DRAWINGS

[0010] Figure 1 It is a front view three-dimensional structure schematic diagram of the plastic woven bag sealing device provided by the utility model;

[0011] Figure 2 It is a back view three-dimensional structure schematic diagram of the plastic woven bag sealing device provided by the utility model;

[0012] Figure 3 It is a three-dimensional structure schematic diagram of the power supply component and the metal heating strip;

[0013] Figure 4 It is a three-dimensional partial cross section structure schematic diagram of the rectangular block, the sealing plate and the gas jet head;

[0014] Figure 5 It is Figure 1 It is the structure enlarged view in A of the utility model;

[0015] Figure 6 It is Figure 4 It is the structure enlarged view in B of the utility model.

[0016] In the figure: 1 base, 2 support seat, 3 metal heating strip, 4 electric control cylinder, 5 pressing plate, 6 rectangular block, 7 cavity, 8 gas nozzle, 9 sealing plate, 10 first extension spring, 11 moving rod, 12 stop block, 13 external power supply, 14 conductive wire, 15 pressure control switch, 16 mounting block, 17 top rod, 18 rubber block, 19 limit block, 20 second extension spring. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0018] Referring to Figures 1-6 As shown in the figure, a plastic woven bag sealing device, including base 1, base 1 is fixedly installed with support seat 2, support seat 2 is fixedly installed with metal heating strip 3, base 1 is equipped with power supply assembly for supplying power to metal heating strip 3, base 1 is installed with electric control cylinder 4 through mounting bracket, the output end of electric control cylinder 4 is fixedly installed with pressing plate 5, metal heating strip 3 is prior art, after electrification, heat will be generated by itself, so that the temperature rises, when sealing the plastic woven bag, the bag opening of the plastic woven bag is placed between pressing plate 5 and metal heating strip 3, then pressing plate 5 is driven to move vertically downward by electric control cylinder 4, until the bag opening of the plastic woven bag is clamped between metal heating strip 3 and pressing plate 5, the sealing of the plastic woven bag is realized through the heat generated by metal heating strip 3.

[0019] Base 1 is fixedly installed with rectangular block 6, rectangular block 6 is located at one side of support seat 2, cavity 7 is formed in rectangular block 6, a plurality of gas nozzles 8 are installed on rectangular block 6 and are in communication with cavity 7, one end of the plurality of gas nozzles 8 points to metal heating strip 3, sealing plate 9 is sealingly and slidably installed in cavity 7, a plurality of first extension springs 10 are fixedly installed on the lower surface of sealing plate 9, one end of the plurality of first extension springs 10 is fixedly connected with the inner wall of cavity 7, transmission assembly for driving sealing plate 9 to move vertically downward is arranged on rectangular block 6, sealing plate 9 is sealingly and vertically slidably installed in cavity 7, when pressing plate 5 moves vertically downward, sealing plate 9 in cavity 7 will be driven to move vertically downward by transmission assembly, first extension spring 10 is compressed, at this time, the space above sealing plate 9 becomes larger, the space below sealing plate 9 becomes smaller, and the pressure of the lower space becomes larger, external air enters cavity 7 through gas nozzle 8, when the sealing of the plastic woven bag is finished, pressing plate 5 moves vertically upward, at this time, sealing plate 9 will be driven to move vertically upward under the action of the elastic force of the plurality of first extension springs 10 and the pressure of the space below sealing plate 9, the air in the space above sealing plate 9 is sprayed out from gas nozzle 8, the sprayed gas blows to metal heating strip 3 after power-off, carries away the temperature on the surface of metal heating strip 3, plays the role of rapid cooling, avoids that metal heating strip 3 is in high-temperature state for a long time, effectively improves the service life of metal heating strip 3.

[0020] Two moving holes are formed on the upper surface of the rectangular block 6 and communicate with the cavity 7. The transmission assembly includes two moving rods 11 vertically slidingly installed in the two moving holes and two stoppers 12 fixedly installed on the side surface of the pressing plate 5. One end of each of the two moving rods 11 is fixedly connected with the sealing plate 9. The two stoppers 12 are located directly above the two moving rods 11. When the pressing plate 5 moves vertically downward, the two stoppers 12 are driven to move toward one end of the moving rod 11. When the stopper 12 contacts with the moving rod 11, the sealing plate 9 is driven to move vertically downward in the cavity 7 through the moving rod 11. The moving rod 11 is in sealing contact with the moving hole.

[0021] The power supply assembly includes an external power source 13 fixedly installed on the base 1 and two conductive wires 14 connected with the positive and negative poles of the external power source 13. One end of each of the two conductive wires 14 is fixedly connected with one end of the metal heating strip 3. The external power source 13 is electrically connected with a pressure control switch 15. One end of the pressing plate 5 is provided with a pressing assembly for controlling the start of the pressure control switch 15. The pressing assembly includes a mounting block 16 fixedly installed on one end of the pressing plate 5, a top rod 17 slidingly installed on the mounting block 16 through an elastic component and a rubber block 18 fixedly installed on the lower end of the top rod 17. The rubber block 18 is located directly below the pressure control switch 15. A circular hole is formed on the mounting block 16. The top rod 17 is vertically slidingly installed in the circular hole. The elastic component includes a limiting block 19 fixedly installed on the upper end of the top rod 17 and a second extension spring 20 sleeved on the top rod 17. The two ends of the second extension spring 20 are fixedly connected with the mounting block 16 and the rubber block 18, respectively. The pressure control switch 15 is a prior art and is connected with the external power source 13 through wires. When the pressure control switch 15 is subjected to pressure, the external power source 13 is started. When the pressure disappears, the external power source 13 is turned off. When the pressing plate 5 moves vertically downward, the top rod 17 and the rubber block 18 are driven to move vertically downward. When the rubber block 18 contacts with the pressure control switch 15, the top rod 17 and the mounting block 16 are relatively moved. The second extension spring 20 is compressed. At the same time, the rubber block 18 applies pressure to the pressure control switch 15 to start the external power source 13. Then, the metal heating strip 3 can be powered through the conductive wires 14 to increase the temperature thereof, thereby completing the sealing of the plastic woven bag.

[0022] The utility model discloses when using, when the pressing plate 5 vertically moves down, will drive the sealing plate 9 in cavity 7 vertically moves down through transmission assembly, and the first telescopic spring 10 is compressed, the space above sealing plate 9 is big now, and the space below changes down, and the pressure of lower empty space changes big, and the air of external connection enters into cavity 7 through gas jet 8, when the plastic woven bag seal is finished, the pressing plate 5 vertically moves up, now under the action of the elasticity of multiple first telescopic springs 10 and the pressure of the space below sealing plate 9, will drive sealing plate 9 vertically to go up, and the air of the space above sealing plate 9 is spouted from gas jet 8, and the spouted gas blows to the metal heating strip 3 after power off, and the temperature on the surface of metal heating strip 3 is taken away, plays the role of rapid cooling, avoids metal heating strip 3 long -term in high temperature state, effectively improves the service life of metal heating strip 3.

Claims

1. A plastic woven bag sealing device comprising a base (1), characterized in that, The base (1) is fixedly installed with a support seat (2), the support seat (2) is fixedly installed with a metal heating strip (3), the base (1) is provided with a power supply assembly for supplying power to the metal heating strip (3), the base (1) is installed with an electric control cylinder (4) through a mounting bracket, the output end of the electric control cylinder (4) is fixedly installed with a pressing plate (5); The base (1) is fixedly installed with a rectangular block (6), the rectangular block (6) is located on one side of the support seat (2), a cavity (7) is formed in the rectangular block (6), a plurality of gas nozzles (8) are installed on the rectangular block (6) and are in communication with the cavity (7), one end of the plurality of gas nozzles (8) points to the metal heating strip (3), a sealing plate (9) is sealingly and slidably installed in the cavity (7), a plurality of first extension springs (10) are fixedly installed on the lower surface of the sealing plate (9), one end of the plurality of first extension springs (10) is fixedly connected with the inner wall of the cavity (7), the rectangular block (6) is provided with a transmission assembly for driving the sealing plate (9) to move vertically downward, two moving holes are formed in the upper surface of the rectangular block (6) and are in communication with the cavity (7), the transmission assembly comprises two moving rods (11) which are vertically and slidably installed in the two moving holes and two stop blocks (12) which are fixedly installed on the side surface of the pressing plate (5), one end of the two moving rods (11) is fixedly connected with the sealing plate (9), and the two stop blocks (12) are located above the two moving rods (11) respectively.

2. A plastic woven bag sealing device according to claim 1, wherein The power supply assembly comprises an external power supply (13) fixedly installed on the base (1) and two conductive wires (14) connected with the positive and negative electrodes of the external power supply (13) respectively, one end of the two conductive wires (14) away from the external power supply (13) is fixedly connected with one end of the metal heating strip (3), the external power supply (13) is electrically connected with a pressure control switch (15), one end of the pressing plate (5) is provided with a pressing assembly for controlling the pressure control switch (15) to start, the pressing assembly comprises a mounting block (16) fixedly installed on one end of the pressing plate (5), a top rod (17) slidably installed on the mounting block (16) through an elastic member and a rubber block (18) fixedly installed on the lower end of the top rod (17), and the rubber block (18) is located directly below the pressure control switch (15).

3. A plastic woven bag sealing device according to claim 2, wherein A circular hole is formed in the mounting block (16), the top rod (17) is vertically and slidably installed in the circular hole, and the elastic member comprises a limiting block (19) fixedly installed on the upper end of the top rod (17) and a second extension spring (20) sleeved on the top rod (17), and the two ends of the second extension spring (20) are fixedly connected with the mounting block (16) and the rubber block (18) respectively.

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