CN217144680U

CN217144680U - Non-return structure

Info

Publication number: CN217144680U
Application number: CN202220956950.1U
Authority: CN
Inventors: 宁路生
Original assignee: Chongqing Xinding Precision Machinery Co ltd
Current assignee: Chongqing Xinding Precision Machinery Co ltd
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2022-08-09
Anticipated expiration: 2032-04-21

Abstract

The utility model discloses a backstop structure, including connecting the fixed part, establish the support on should connecting the fixed part, the activity is equipped with the backstop piece on the support, and this backstop piece sets up along vertical direction during the closed condition, the upper end of backstop piece with the leg joint, its lower extreme is the free end. The check plate is opened during normal operating condition, and in the raw materials got into the hopper, the check plate was closed under gravity or other negative pressure equipment effect when needs stop work, and the material in the hopper can't flow out and get into other hoppers this moment in, has effectively reduced the defective percentage.

Description

Non-return structure

Technical Field

The utility model relates to an injection moulding equipment technical field, concretely relates to backstop structure.

Background

As shown in the attached figure 1, when the negative pressure air suction device is opened, the interior of the suction machine is vacuumized, and the raw materials enter the storage hopper 7 of the suction device under the action of negative pressure. When the multiple machines are used in a combined mode, the same negative pressure equipment is used, the negative pressure equipment is always in a working state, when one or more of the negative pressure equipment does not need to work, the three-way valve on the upper portion of the hopper is opened, air is led into the hopper by external air, negative pressure air suction is counteracted, and the purpose of stopping working is achieved, however, residual raw materials still exist in the hopper which stops working at the moment, and the residual raw materials can enter other working hoppers again through the raw material conveying pipe 9. Resulting in mixing of raw materials (different colors of raw materials for each machine), and formation of defective products or defective products.

Disclosure of Invention

To the technical problem that exists at present, the utility model provides a backstop structure to solve the problem among the prior art.

In order to achieve the purpose of the invention, the utility model provides the following technical scheme:

a non-return structure comprises a connecting fixing part, wherein a support is arranged on the connecting fixing part, a non-return sheet is movably arranged on the support and is arranged along the vertical direction in a closed state, the upper end of the non-return sheet is rotatably connected with the support, and the lower end of the non-return sheet is a free end.

Preferably, the deflection direction of the non-return sheet is defined as the front side, a limiting baffle is arranged on the front side of the bracket, and the position of the lower end of the limiting baffle is lower than the position of the upper end of the non-return sheet and higher than the position of the lower end of the non-return sheet.

Preferably, the bracket is provided with a detection sensor capable of detecting an abnormal position of the stopper plate in a closed state.

Preferably, a pull rod is movably arranged on the bracket along the horizontal direction, the front end of the pull rod is fixedly connected with the upper end of the non-return sheet, and the rear end of the pull rod is a free end.

Preferably, waist-shaped holes are formed in two sides of the support, and the upper ends of the non-return sheets are movably connected in the waist-shaped holes through fixing shafts.

Compared with the prior art, the beneficial effects of the utility model are that: the check plate is opened during normal operating condition, and in the raw materials got into the hopper, the check plate was closed under gravity or other negative pressure equipment effects when needs stop work, and the material in the hopper can't flow out and get into other hoppers this moment in, has prevented scurrying the material, has effectively reduced the defective percentage.

Description of the drawings:

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic view of the structure of the present invention installed on the feeding pipe;

fig. 4 is a schematic view of the present invention in a use state.

Detailed Description

The present invention will be described in further detail with reference to test examples and specific embodiments. However, it should not be understood that the scope of the above-mentioned subject matter is limited to the following embodiments, and all the technologies realized based on the present invention are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

As shown in fig. 2, the non-return structure includes a connecting fixing portion 1, and is installed and fixed by the connecting fixing portion 1, the non-return structure is generally installed on a feeding pipe 6 of an injection molding machine (as shown in fig. 2), and for convenience of installation, the connecting fixing portion 1 is designed to be a hairpin structure in this embodiment. A support 2 is arranged above the connecting and fixing part 1, a non-return sheet 3 is movably arranged on the support 2, the non-return sheet 3 is arranged along the vertical direction when the non-return sheet is in a closed state, the upper end of the non-return sheet 3 is rotatably connected with the support 2, the lower end of the non-return sheet is a free end, the non-return sheet 3 can deflect around the connecting part of the non-return sheet and the support 2, and the non-return sheet 3 can open a discharge port of a feeding pipe 6 after deflecting.

The connecting mode of the non-return sheet 3 and the bracket 2 is as follows: waist-shaped holes 21 are formed in two sides of the support 2, the waist-shaped holes 21 are obliquely arranged to facilitate movement of the check plate 3, the upper end of the check plate 3 is movably connected into the waist-shaped holes 21 through fixing shafts 31, and the fixing shafts 31 rotate in the waist-shaped holes to drive the check plate 3 to deflect on one hand and can also move in the waist-shaped holes on the other hand.

In order to prevent the non-return sheet 3 from turning over and being incapable of returning and closing under the self gravity, the deflection direction of the non-return sheet 3 is defined as the front side, a limiting baffle plate 22 is arranged on the front side of the bracket 2, the lower end of the limiting baffle plate 22 is lower than the upper end of the non-return sheet 3 and higher than the lower end of the non-return sheet 3, and therefore when the non-return sheet 3 deflects to the extreme position, the non-return sheet can be abutted against the lower end of the limiting baffle plate 22 to limit.

When the non-return piece 3 can not close the discharge gate completely or there is the material card when the discharge gate, will still have partial material to flow out and cause the compounding, this kind of condition is difficult to be found by the people, consequently establishes detection sensor 5 on support 2, this detection sensor 5 can detect the abnormal position of non-return piece 3 when the closure state along the horizontal direction activity on support 2 and be provided with pull rod 4, the front end of this pull rod 4 and the upper end fixed connection of non-return piece 3, its rear end is the free end. When the detection sensor 5 detects that the non-return sheet 3 is not completely closed, the pull rod 4 can be pulled manually to drive the fixed shaft and the non-return sheet 3 to move, so that the blocked materials are removed, and then the normal operation is carried out.

Fig. 4 is a schematic view of the injection molding equipment with the non-return structure in a working state, the non-return structure is installed at a discharge port of the feed pipe 6, the feed pipe 6 is installed at a communication position between the hopper 7 and the raw material pipe 9, the non-return structure is located in the hopper 7 after the non-return structure is installed, when the negative pressure air suction equipment is opened, the interior of the material suction machine is vacuumized, and the raw material enters the hopper 7 of the material suction equipment under the action of negative pressure. When the multiple machines are used in a combined mode, the same negative pressure equipment is used, the negative pressure equipment is always in a working state, when the left two machines do not need to work, the three-way valve on the upper portion of the hopper is opened, air is fed into the hopper by external air, negative pressure air suction is counteracted, the purpose of stopping working is achieved, and the rightmost one works normally. When expecting through inlet pipe 6, backstop piece 3 is opened naturally under the effect of feeding pressure, and inside the raw materials got into hopper 7, got into injection molding machine 8 from hopper 7, when this equipment need stop work, backstop piece 3 closed under the negative pressure effect of gravity and other equipment, prevented that the raw materials in the hopper from getting into raw materials pipe 9 and then getting into other hoppers in, effectively prevented scurrying the material.

The foregoing describes preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. A non-return structure is characterized in that: the connecting device comprises a connecting fixing part (1), wherein a support (2) is arranged on the connecting fixing part (1), a check sheet (3) is movably arranged on the support (2), the check sheet (3) is arranged in the vertical direction in the closing state, the upper end of the check sheet (3) is rotatably connected with the support (2), and the lower end of the check sheet is a free end.

2. A backstop structure according to claim 1, wherein: the deflection direction of the non-return sheet (3) is defined as the front side, a limiting baffle (22) is arranged on the front side of the support (2), and the position of the lower end of the limiting baffle (22) is lower than the position of the upper end of the non-return sheet (3) and higher than the position of the lower end of the non-return sheet (3).

3. A backstop structure according to claim 2, wherein: the bracket (2) is provided with a detection sensor (5), and the detection sensor (5) can detect the abnormal position of the non-return sheet (3) in the closed state.

4. A backstop structure according to claim 3, wherein: a pull rod (4) is movably arranged on the bracket (2) along the horizontal direction, the front end of the pull rod (4) is fixedly connected with the upper end of the non-return sheet (3), and the rear end of the pull rod is a free end.

5. A backstop structure according to claim 1, wherein: waist-shaped holes (21) are formed in two sides of the support (2), and the upper ends of the non-return plates (3) are movably connected into the waist-shaped holes (21) through fixing shafts (31).