Film blowing and exhausting device of film blowing machine for processing medicinal low-density polyethylene bags

Abstract

The utility model relates to the technical field of film blowing machines, and discloses a film blowing and exhausting device of a film blowing machine for processing medicinal low-density polyethylene bags, which comprises an air blowing cylinder, an air outlet is arranged at one end of the air blowing cylinder, an air inlet is arranged at the other end of the air blowing cylinder, and the air blowing cylinder is connected with the air blowing cylinder through mutual matching of structures such as a pressure spring, a sealing baffle, a threaded rod and a sliding rod. Therefore, when the air pressure in the air blowing cylinder reaches a threshold value, the sealing baffle can overcome the pressure of the pressure spring to move, air exhausting is achieved, the situation that a low-density polyethylene bag is blown to be broken is avoided, and according to the specification of the low-density polyethylene bag to be produced, a sliding rod can be held and a handle is rotated to drive a threaded rod to rotate; the distance between the sealing baffle and the sliding rod is changed through the thread screwing-in relation, so that the pressure of the pressure spring on the sealing baffle is changed, the exhaust mechanism can adjust different exhaust threshold values according to the specification of a low-density polyethylene bag to be produced, and the adaptability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of film blowing machine, concretely to the film blowing exhaust device of medicinal low density polyethylene bag processing is used film blowing machine. BACKGROUND

[0002] Medicinal low density polyethylene bag is a kind of commonly used medicine packaging bag, in the process of low density polyethylene bag production and processing, need to use film blowing machine to blow, film blowing machine needs to use exhaust device to discharge excess gas when blowing, avoid blowing low density polyethylene bag.

[0003] The film blowing exhaust device of existing film blowing machine is in the open state when using, leading to the film blowing machine is in the exhaust state, thereby leading to the film blowing efficiency of film blowing machine is lower, the production and processing efficiency of medicinal low density polyethylene bag is reduced, and the time cost of medicinal low density polyethylene bag production is improved.

[0004] The patent with the authorized announcement number CN217454918U discloses a film blowing exhaust device of medicinal low density polyethylene bag processing is used film blowing machine.The utility model, including the blow cylinder, the right end of the blow cylinder is fixedly connected with the air inlet pipe, the cylinder wall of the blow cylinder is equipped with the exhaust hole, the outer wall of the blow cylinder is fixedly connected with the internal thread cylinder corresponding with the exhaust hole, the internal thread cylinder is internally threadedly connected with the external thread cylinder, the cylinder bottom of the external thread cylinder is equipped with the air release hole, the outer wall of the external thread cylinder is fixedly connected with the U-shaped plate, the U-shaped plate is slidably connected with the sealing plate, two sliding blocks are fixedly connected on the sealing plate, the side wall of the opposite side of the U-shaped plate is equipped with the sliding hole, and the two sliding blocks are located in the two sliding holes respectively, and the reset spring is fixedly connected between the sealing plate and the U-shaped plate.The utility model effectively improves the film blowing efficiency of film blowing machine, effectively improves the production efficiency of medicinal low density polyethylene bag, and reduces the production cost.

[0005] But the pressure of reset spring in the device to the sealing plate is not adjustable, cannot adjust the corresponding air pressure threshold according to the different specifications of the medicinal low density polyethylene bag to be produced, and the adaptability is general. UTILITY MODEL CONTENTS

[0006] (I) technical problem solved

[0007] In view of the defects of the prior art, the utility model provides a film blowing exhaust device of medicinal low density polyethylene bag processing is used film blowing machine, to solve the above technical problems.

[0008] (II) technical scheme

[0009] In order to achieve the above object, the utility model provides the following technical scheme: Medicinal low density polyethylene bag processing is blown with film blowing exhaust device of blowing machine, including blowing cylinder, the one end of blowing cylinder is arranged with gas outlet, the other end of blowing cylinder is provided with air inlet, the side of blowing cylinder is arranged with mounting block, is equipped with the exhaust port of communication with the inside of blowing cylinder on mounting block, the exhaust mechanism is connected on mounting block, is equipped with cavity in exhaust mechanism, the sealing baffle is arranged in the sliding of cavity, the sealing baffle is abutted at the connecting orifice of exhaust mechanism, the lateral wall of cavity is equipped with a plurality of through -holes along the circumferential direction interval, and the compression spring is arranged in the cavity, and one end of compression spring is abutted on the sealing baffle, and the other end of compression spring is abutted on the inner wall of cavity, and the sliding rod is arranged in the sliding of exhaust mechanism, and the threaded rod is connected on the sliding rod, and one end of threaded rod is rotatably installed on the sealing baffle, and the other end of threaded rod is installed with handle.

[0010] Preferably, the threaded hole is formed on the sliding rod, and the threaded hole is matched with the threaded rod.

[0011] Preferably, the annular limiting groove is formed on the exhaust mechanism, and the limiting ring matched with the annular limiting groove is protruded on the sliding rod.

[0012] Preferably, the rotating hole is formed on the sealing baffle, and the rotating block matched with the rotating hole is arranged on the end of the threaded rod away from the handle.

[0013] Preferably, the butt joint end is protruded on the bottom of the exhaust mechanism, the outer thread is arranged on the outer side wall of the butt joint end, and the inner thread matched with the outer thread is formed in the exhaust port.

[0014] Preferably, the limiting stop ring is arranged on the inner wall of the exhaust port, the rubber sealing ring is arranged on the top of the limiting stop ring, and the end of the butt joint end is abutted on the rubber sealing ring.

[0015] Preferably, the sealing baffle is made of metal material, and the rubber sleeve is covered on the outer surface of the sealing baffle.

[0016] Compared with the prior art, the utility model provides the blown film exhaust device of blowing machine for medicinal low density polyethylene bag processing, has the following beneficial effects:

[0017] 1. The utility model discloses a spring, sealing baffle, threaded rod and sliding rod etc. Structure's mutual cooperation is set up, thereby can make sealing baffle can overcome the pressure of spring movement when the air pressure in blow cylinder reaches threshold value, thereby realizes exhaust, avoids to use low density polyethylene bag is blown to break, and can according to the specification of low density polyethylene bag to be produced, holds the sliding rod and rotates handle and drives threaded rod rotation, through the screw thread spin -in relation makes the interval between sealing baffle and sliding rod change, thereby make the pressure of spring between sealing baffle change, and then make exhaust mechanism can adjust different exhaust threshold according to the specification of low density polyethylene bag to be produced, thereby improved the adaptability of device. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the main body structure schematic drawing of the utility model;

[0019] Figure 2 It is the cross section schematic drawing of the utility model's blow cylinder and exhaust mechanism;

[0020] Figure 3 It is the utility model's Figure 2 It is the structure enlarged diagram of A place in the utility model;

[0021] Figure 4 It is the utility model's Figure 2 It is the structure enlarged diagram of B place in the utility model.

[0022] Wherein: 1, blow cylinder, 2, air outlet, 3, mounting block, 4, exhaust mechanism, 5, through -hole, 6, handle, 7, air inlet, 8, exhaust port, 9, threaded rod, 10, sealing baffle, 11, rotation hole, 12, rotation block, 13, spring, 14, cavity, 15, threaded hole, 16, annular limit slot, 17, limit ring, 18, sliding rod, 19, butt joint end, 20, limit baffle ring, 21, rubber sealing ring. DETAILED DESCRIPTION

[0023] The embodiments of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0024] In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more than two;The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the utility model, it should be explained that, unless otherwise specified and limited, the terms "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be mechanically connected, or it can be electrically connected;It can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] Please refer to Figures 1-4 , the blowing film machine blowing exhaust device for processing medicinal low-density polyethylene bag, including blowing cylinder 1, the one end of blowing cylinder 1 is arranged with gas outlet 2, the other end of blowing cylinder 1 is provided with air inlet 7, one side of blowing cylinder 1 is arranged with mounting block 3, mounting block 3 is opened with exhaust port 8 that communicates with the inside of blowing cylinder 1, exhaust mechanism 4 is screw connected on mounting block 3, cavity 14 is opened in exhaust mechanism 4, sealing baffle 10 is slidably arranged in cavity 14, sealing baffle 10 is abutted at the connecting hole of exhaust mechanism 4, a plurality of through holes 5 are spaced apart and arranged on the side wall of cavity 14 along the circumferential direction, compression spring 13 is arranged in cavity 14, one end of compression spring 13 is abutted on sealing baffle 10, the other end of compression spring 13 is abutted on the inner wall of cavity 14, sliding rod 18 is slidably arranged on exhaust mechanism 4, threaded rod 9 is screw connected on sliding rod 18, one end of threaded rod 9 is rotatably installed on sealing baffle 10, the other end of threaded rod 9 is installed with handle 6.

[0027] The mutual cooperation of the compression spring 13, the sealing baffle 10, the threaded rod 9 and the sliding rod 18 can make the sealing baffle 10 move against the pressure of the compression spring 13 when the air pressure in the blowing cylinder 1 reaches a threshold value, so that the air is discharged, the low-density polyethylene bag is prevented from being blown, and the sliding rod 18 is held and the handle 6 is rotated to drive the threaded rod 9 to rotate according to the specifications of the low-density polyethylene bag to be produced, so that the distance between the sealing baffle 10 and the sliding rod 18 changes through the threaded screwing relationship, so that the pressure between the sealing baffle 10 and the compression spring 13 changes, and then the exhaust mechanism 4 can adjust different exhaust thresholds according to the specifications of the low-density polyethylene bag to be produced, thereby improving the adaptability of the device.

[0028] Specifically, in the embodiment, the sliding rod 18 is provided with a threaded hole 15, and the threaded hole 15 is matched with the threaded rod 9, so that when the threaded rod 9 is rotated, the distance between the sealing baffle 10 and the sliding rod 18 can be changed through the threaded screwing relationship.

[0029] Specifically, in the embodiment, the exhaust mechanism 4 is provided with an annular limiting groove 16, and the sliding rod 18 is provided with a limiting ring 17 matched with the annular limiting groove 16.

[0030] The mutual cooperation between the annular limiting groove 16 and the limiting ring 17 can facilitate the limitation of the movement range of the sliding rod 18.

[0031] Specifically, in the embodiment, the sealing baffle 10 is provided with a rotating hole 11, and the threaded rod 9 is provided with a rotating block 12 matched with the rotating hole 11.

[0032] The mutual cooperation between the rotating hole 11 and the rotating block 12 can make the sealing baffle 10 rotate on the threaded rod 9.

[0033] Specifically, in the embodiment, the bottom of the exhaust mechanism 4 is provided with a butt joint end 19, the outer side wall of the butt joint end 19 is provided with an external thread, and the exhaust port 8 is provided with an internal thread matched with the external thread.

[0034] The external thread on the butt joint end 19 and the internal thread in the exhaust port 8 can facilitate the disassembly and assembly of the exhaust mechanism 4, thereby facilitating the disassembly and assembly maintenance of the exhaust mechanism 4.

[0035] Specifically, in the embodiment, the inner wall of the exhaust port 8 is provided with a limiting baffle ring 20, the top of the limiting baffle ring 20 is provided with a rubber sealing ring 21, and the end of the butt joint end 19 abuts against the rubber sealing ring 21.

[0036] Through the cooperation of the limiting baffle ring 20 and the rubber sealing ring 21, the butt joint end 19 can abut against the rubber sealing ring 21 after the exhaust mechanism 4 is installed, so as to guarantee the sealing performance of the connection between the exhaust mechanism 4 and the blowing cylinder 1.

[0037] Specifically, in the embodiment, the sealing baffle is made of metal, and the sealing baffle is coated with a rubber sleeve.

[0038] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A film blowing exhaust device for a pharmaceutical low-density polyethylene bag processing film blowing machine, comprising a blowing cylinder, characterized in that: One end of the blowing cylinder is provided with an air outlet, the other end of the blowing cylinder is provided with an air inlet, one side of the blowing cylinder is provided with a mounting block, the mounting block is provided with an exhaust port communicated with the inside of the blowing cylinder, the mounting block is threadedly connected with an exhaust mechanism, the exhaust mechanism is provided with a cavity, the sealing baffle is slidably arranged in the cavity, the sealing baffle abuts against the connecting hole of the exhaust mechanism, a plurality of through holes are formed in the side wall of the cavity and are spaced apart in the circumferential direction, a compression spring is arranged in the cavity, one end of the compression spring abuts against the sealing baffle, and the other end of the compression spring abuts against the inner wall of the cavity, a sliding rod is slidably arranged on the exhaust mechanism, a threaded rod is threadedly connected to the sliding rod, one end of the threaded rod is rotatably installed on the sealing baffle, and the other end of the threaded rod is provided with a handle.

2. The pharmaceutical low density polyethylene bag processing film blowing machine film blowing exhaust device according to claim 1, characterized in that: The sliding rod is provided with a threaded hole, and the threaded hole is matched with the threaded rod.

3. The pharmaceutical low density polyethylene bag processing film blowing machine film blowing exhaust device according to claim 1, characterized in that: The exhaust mechanism is provided with an annular limiting groove, and the sliding rod is provided with a limiting ring matched with the annular limiting groove.

4. The pharmaceutical low density polyethylene bag processing film blowing machine film blowing exhaust device according to claim 1, characterized in that: The sealing baffle is provided with a rotating hole, and the threaded rod is provided with a rotating block matched with the rotating hole.

5. The pharmaceutical low density polyethylene bag processing film blowing machine film blowing exhaust device according to claim 1, characterized in that: The bottom of the exhaust mechanism is provided with a butt joint end, the outer side wall of the butt joint end is provided with an external thread, and the exhaust port is provided with an internal thread matched with the external thread.

6. The pharmaceutical low density polyethylene bag processing film blowing machine film blowing exhaust device according to claim 1, characterized in that: The inner wall of the exhaust port is provided with a limiting baffle ring, the top of the limiting baffle ring is provided with a rubber sealing ring, and the end of the butt joint end abuts against the rubber sealing ring.

7. The pharmaceutical low density polyethylene bag processing film blowing machine film blowing exhaust device according to claim 1, characterized in that: The sealing baffle is made of metal, and the sealing baffle is covered with a rubber sleeve.

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