Negative pressure feeding device of plastic vacuum forming machine

Abstract

The utility model discloses a negative pressure feeding device of a plastic vacuum forming machine. The negative pressure feeding device comprises a plastic vacuum forming machine body and a negative pressure feeding mechanism connected with a feeding port of the plastic vacuum forming machine body. The negative pressure feeding mechanism comprises a negative pressure pump, a feeding pipeline connected with a feeding port of the negative pressure pump, and a feeding pipeline connected with a feeding port of the negative pressure pump. A material guiding hopper is fixed to a top end opening of the feeding pipeline, and a dust treatment cabin is fixed to an upper end opening of the material guiding hopper. The negative pressure pump, the feeding pipeline and the feeding pipeline are matched with one another, plastic particles are sucked into the plastic suction machine through negative pressure, and therefore the situation that the interior of the material pipe is blocked is avoided; and meanwhile, the spiral discharging piece is arranged between the hopper and the negative pressure pump, in the process that the plastic particles spirally roll down on the spiral discharging piece, static electricity is released by means of a static electricity wind bar in the center of the spiral piece, fine dust attached to the particles is forced to be influenced by the static electricity to be adsorbed into the net barrel, and therefore it is guaranteed that the plastic particles keep certain purity.

Description

Technical Field

[0001] The utility model relates to the technical field of feeding facilities for blister forming machines, in particular to a negative pressure feeding device for blister forming machines. Background Art

[0002] Vacuum forming technology is one of the most commonly used forming methods in plastic packaging. It is a forming technology that uses thermoplastic plastic sheets as the forming object. Usually, the plastic particles to be formed are put into a hopper, and gravity is used to let the particles in the hopper fall naturally and be transported to the inside of the forming machine. However, the materials of the existing forming machines may be blocked inside the material pipe when falling. At the same time, in order to ensure the quality of the objects after forming, the plastic particles usually need to ensure a certain degree of purity. However, the existing forming machines do not have the function of dust removal, which can easily cause the dust adhered to the surface of the plastic particles to be mixed into the inside of the objects after forming, affecting the production quality of plastic products. Utility Model Content

[0003] The purpose of the utility model is to provide a negative pressure feeding device for a vacuum forming machine in view of the deficiencies in the prior art, so as to solve the problems raised in the background technology.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A negative pressure feeding device for a blister machine comprises a blister machine body, a negative pressure feeding mechanism arranged on the right side wall of the blister machine body and connected to a feeding port of the blister machine body;

[0006] The negative pressure feeding mechanism includes a negative pressure pump, a feeding pipeline connected to the feeding port of the negative pressure pump, and a feeding pipeline connected to the feeding port of the negative pressure pump;

[0007] A material introduction funnel is fixed on the top port of the feed pipe, a dust treatment cabin is fixed on the upper port of the material introduction funnel, and a material placement bin is fixed on the top port of the dust treatment cabin;

[0008] A circle of spiral material sheets is fixed in the inner cavity of the dust treatment chamber, a net cylinder is fixed at the inner central position of the spiral material sheets, and an electrostatic wind rod is fixed in the inner cavity of the net cylinder.

[0009] As a preferred solution for the negative pressure feeding device of the vacuum forming machine, the spiral feeding piece is in the shape of a spiral sheet as a whole, and the top port of the spiral feeding piece is connected with the inner cavity of the material placement bin, and the bottom port of the spiral feeding piece is connected with the inner cavity of the material introduction funnel, so as to allow the plastic particles to spiral and roll down from the spiral feeding piece.

[0010] As a preferred solution for the negative pressure feeding device of the vacuum forming machine, a plurality of circular holes are arranged in a linear array on the side wall of the outer surface of the mesh cylinder for allowing the electrostatic wind rod to release the dust on the electrostatically adsorbed plastic particles into the inner cavity of the dust treatment chamber.

[0011] As a preferred solution of the negative pressure feeding device of the vacuum forming machine, the plastic granular raw materials to be vacuum formed are placed in the inner cavity of the material placement bin, and the plastic granular raw materials enter the dust treatment chamber from the inner cavity of the material placement bin by gravity.

[0012] As a preferred solution for the negative pressure feeding device of the blister forming machine, the material placement bin, the dust treatment chamber and the feed funnel are interconnected to form an integral space, and the side walls of the inner cavity of the feed funnel and the feed pipe and the surface of the spiral feed sheet are all electroplated with a nickel layer.

[0013] As a preferred solution of the negative pressure feeding device of the vacuum forming machine, a base is fixed to the bottom surface of the negative pressure pump, and the bottom four corners of the base are locked on the ground by screws.

[0014] As a preferred solution of the negative pressure feeding device of the blister molding machine, one end of the feeding pipeline away from the negative pressure pump penetrates into the inner cavity of the blister molding machine body and is connected to the material receiving port of the blister molding machine body.

[0015] Beneficial effects of the utility model:

[0016] The utility model utilizes negative pressure to suck plastic particles into the interior of the vacuum forming machine by cooperating with a negative pressure pump, a feeding pipe and a feed pipe, thereby avoiding the situation that the interior of the material pipe is blocked; at the same time, a spiral feeding piece is arranged between the hopper and the negative pressure pump, and during the process that the plastic particles spirally roll down, the static electricity is released by the static wind rod in the center of the spiral piece, forcing the fine dust attached to the particles to be affected by the static electricity and adsorbed into the interior of the net cylinder, thereby ensuring that the plastic particles maintain a certain degree of purity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for use in the embodiments of the present utility model. Obviously, the drawings described below are only some embodiments of the present utility model, and for ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the negative pressure feeding device of the vacuum forming machine described in the utility model.

[0019] Figure 2 It is a structural schematic diagram of the negative pressure feeding mechanism described in the utility model.

[0020] Figure 3 It is a cross-sectional structural schematic diagram of the negative pressure feeding mechanism described in the utility model.

[0021] In the figure:

[0022] 1. Vacuum forming machine body; 2. Negative pressure feeding mechanism; 21. Negative pressure pump; 22. Feeding pipe; 23. Base; 24. Feeding pipe; 25. Feeding funnel; 26. Dust treatment cabin; 27. Material placement bin; 28. Spiral feeding sheet; 29. ​​Electrostatic wind rod; 210. Net cylinder. DETAILED DESCRIPTION

[0023] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0024] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0025] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is 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 must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term 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 an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] like Figures 1 to 3As shown, the utility model provides a negative pressure feeding device for a blister machine, comprising a blister machine body 1, a negative pressure feeding mechanism 2 arranged on the right side wall of the blister machine body 1 and connected to the feeding port of the blister machine body 1; the negative pressure feeding mechanism 2 comprises a negative pressure pump 21, a feeding pipe 22 connected to the feeding port of the negative pressure pump 21, and a feeding pipe 24 connected to the feeding port of the negative pressure pump 21; a feed hopper 25 is fixed to the top port of the feed pipe 24, a dust treatment cabin 26 is fixed to the upper port of the feed hopper 25, and a material placement bin 27 is fixed to the top port of the dust treatment cabin 26.

[0028] Specifically, a spiral feed sheet 28 is fixed in the inner cavity of the dust treatment chamber 26 of this embodiment, and a net cylinder 210 is fixed in the central position of the inner cavity of the spiral feed sheet 28, and an electrostatic wind rod 29 is fixed in the inner cavity of the net cylinder 210. The spiral feed sheet 28 is in the shape of a spiral sheet as a whole, and the top end of the spiral feed sheet 28 is connected with the inner cavity of the material placement bin 27, and the bottom end of the spiral feed sheet 28 is connected with the inner cavity of the material guide funnel 25, so as to allow the plastic particles to spiral and roll down from the spiral feed sheet 28.

[0029] More specifically, a plurality of circular holes are arranged in a linear array on the side walls of the outer surface of the mesh cylinder 210 for allowing the electrostatic wind rod 29 to release the dust on the electrostatically adsorbed plastic particles into the inner cavity of the dust treatment chamber 26; the inner cavity of the material placement bin 27 is filled with plastic particle raw materials to be vacuum-formed, and the plastic particle raw materials enter the dust treatment chamber 26 from the inner cavity of the material placement bin 27 by gravity.

[0030] More specifically, the material storage bin 27, the dust treatment chamber 26 and the feed hopper 25 are interconnected to form an integral space, and the feed hopper 25 and the inner cavity side walls of the feed pipe 24 and the surface of the spiral feed sheet 28 are all electroplated with a nickel layer. A base 23 is fixed to the bottom surface of the negative pressure pump 21, and the bottom four corners of the base 23 are screwed to the ground. The end of the feed pipe 22 away from the negative pressure pump 21 penetrates into the inner cavity of the blister machine body 1 and is connected to the material receiving port of the blister machine body 1.

[0031] According to the above-mentioned preferred technical solution, the workflow of the technical solution is described as follows:

[0032] The negative pressure feeding device of the vacuum forming machine of the utility model first puts the plastic particles into the material placement bin 27, and the particles roll down to the dust treatment chamber 26 under the influence of gravity, and at the same time, the particles will be received by the spiral lower material sheet 28 and the particles will spiral downward along the spiral line of the spiral lower material sheet 28. While slowing down the falling speed of the particles, the static wind rod 29 inside the net cylinder 210 will release static electricity to the particles on the spiral lower material sheet 28, forcing the fine dust attached to the particles to be affected by static electricity and adsorbed into the net cylinder 210. The dust-removed particles then enter the feed pipe 24 under the guidance of the feed funnel 25, and are transported to the internal vacuum forming area of ​​the vacuum forming machine body 1 through the feeding pipe 22 under the negative pressure of the negative pressure pump 21.

[0033] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. A negative pressure feeding device for a blister forming machine, characterized in that: It comprises a blister machine body (1), and a negative pressure feeding mechanism (2) which is arranged on the right side wall of the blister machine body (1) and connected to the feeding port of the blister machine body (1); The negative pressure feeding mechanism (2) comprises a negative pressure pump (21), a feeding pipe (22) connected to the feeding port of the negative pressure pump (21), and a feeding pipe (24) connected to the feeding port of the negative pressure pump (21); A material introduction funnel (25) is fixed on the top port of the feed pipe (24), a dust treatment chamber (26) is fixed on the upper port of the material introduction funnel (25), and a material placement bin (27) is fixed on the top port of the dust treatment chamber (26); A spiral material sheet (28) is fixed in the inner cavity of the dust treatment chamber (26), a net cylinder (210) is fixed in the central position of the inner part of the spiral material sheet (28), and an electrostatic wind rod (29) is fixed in the inner cavity of the net cylinder (210).

2. The negative pressure feeding device for the blister machine according to claim 1, characterized in that: The spiral material sheet (28) is in the shape of a spiral sheet as a whole, and the top end of the spiral material sheet (28) is connected to the inner cavity of the material placement bin (27), and the bottom end of the spiral material sheet (28) is connected to the inner cavity of the material introduction funnel (25), so as to allow the plastic particles to spiral and roll down from the spiral material sheet (28).

3. The negative pressure feeding device for the blister machine according to claim 1, characterized in that: The outer surface side wall of the net cylinder (210) is provided with a plurality of circular holes arranged in a linear array, for allowing the electrostatic wind rod (29) to release the dust on the electrostatically adsorbed plastic particles into the inner cavity of the dust treatment chamber (26).

4. The negative pressure feeding device for the blister machine according to claim 1, characterized in that: The inner cavity of the material storage bin (27) contains plastic granule raw materials to be vacuum-formed, and the plastic granule raw materials enter the dust treatment chamber (26) from the inner cavity of the material storage bin (27) by gravity.

5. The negative pressure feeding device for the blister machine according to claim 1, characterized in that: The material storage bin (27), the dust treatment chamber (26) and the feed hopper (25) are interconnected to form an integral space, and the surfaces of the feed hopper (25), the inner cavity side walls of the feed pipe (24) and the spiral feed sheet (28) are all electroplated with a nickel layer.

6. The negative pressure feeding device for the blister machine according to claim 1, characterized in that: A base (23) is fixed to the bottom surface of the negative pressure pump (21), and the four bottom corners of the base (23) are fastened to the ground by screws.

7. The negative pressure feeding device for the blister machine according to claim 1, characterized in that: One end of the feeding pipe (22) away from the negative pressure pump (21) penetrates into the inner cavity of the blister machine body (1) and is connected to the material receiving port of the blister machine body (1).

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