Glue injection tool for coil

Abstract

The coil glue injection tool comprises a stand column, the stand column comprises a column body and a clamping table arranged at the bottom of the column body, the column body and the clamping table are coaxially arranged, and the diameter of the clamping table is larger than that of the column body; the diameter of the cylinder is matched with the diameter of the inner ring of the coil, and the diameter of the clamping table is matched with the diameter of a spigot at the bottom of the shell; when the seam allowance at the bottom of the shell is matched with the clamping table and the coil is matched with the column body at the same time, a certain gap exists between the outer ring of the coil and the inner wall of the shell. According to the coil glue injection device, concentric positioning of the coil and the shell in the coil glue injection process, fixing of the coil and splitting after glue solidification can be guaranteed, and the qualified rate of products is greatly increased.

Description

Technical Field

[0001] This application relates to the field of solenoid valve technology, specifically to a coil gluing fixture. Background Technology

[0002] In the coal mining industry, solenoid valves are used to adjust technical parameters such as the direction and flow rate of the medium in hydraulic supports. Most solenoid coils are made by wrapping a coil around an armature. The magnetic force generated by the coil operates the armature, which in turn controls the movement of the valve core in the hydraulic system, thus achieving the switching action of the solenoid valve.

[0003] The coil and valve body are two separate entities. Typically, the coil is wound around a bobbin and then placed inside a circular housing. A gap exists between the housing and the wound coil, which needs to be filled with adhesive. After adhesive filling, the coil and housing form a single unit, which is then placed into the valve body. Throughout this process, it is crucial to achieve high-quality adhesive filling while maintaining concentricity between the coil, bobbin, and housing, as well as between the coil as a whole and the housing.

[0004] However, during the current glue injection process, misalignment often occurs, leading to an increase in the electromagnetic force required for movement. To meet the electromagnetic force requirements, the size of the solenoid valve coil needs to be changed, which in turn increases the overall size of the solenoid valve. This poses a significant constraint in the confined downhole working environment. Utility Model Content

[0005] Therefore, this application provides a coil glue injection fixture to solve the problem that it is not easy to make the coil, spool and shell concentric during glue injection in the prior art.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A coil gluing fixture includes a column, the column comprising a column body and a clamping platform disposed at the bottom of the column body, the column body and the clamping platform being coaxially arranged, and the diameter of the clamping platform being larger than the diameter of the column body; the diameter of the column body is adapted to the inner diameter of the coil, and the diameter of the clamping platform is adapted to the diameter of the stop at the bottom of the outer shell; when the stop at the bottom of the outer shell and the clamping platform, and the coil and the column body are simultaneously engaged, there is a certain gap between the outer coil of the coil and the inner wall of the outer shell.

[0008] Optionally, it also includes a gasket for covering and sealing the top of the column and the coil, and the gasket is fitted with a first fixing screw for fixing the gasket to the column.

[0009] Optionally, when the coil is fitted with the column, the top surface of the coil is flush with the top surface of the column.

[0010] Optionally, a base is included, and the column is provided with a plurality of columns on the base.

[0011] Optionally, a plurality of positioning columns are provided on the base, the positioning columns correspond to the positions and quantities of the columns, and the bottom of the column is coaxially provided with a positioning hole, and the positioning hole is adapted to the positioning column.

[0012] Optionally, the inside of the positioning column is coaxially provided with a second fixing screw, and the second fixing screw is used for threaded cooperation with the column.

[0013] Optionally, the gasket is made of plastic.

[0014] Optionally, the height of the clamping table is greater than the depth of the stop opening.

[0015] Compared with the prior art, the present application has at least the following beneficial effects:

[0016] 1. The coil is positioned by the column, and the shell is positioned by the clamping table, so that the coil and the shell are also in the coaxial position, the concentric positioning in the coil glue injection process is ensured, the stability of the coil is ensured, the qualified rate of the coil is greatly improved, the product quality is greatly improved, and the production efficiency is improved.

[0017] 2. The gasket can seal the column and the top of the coil to prevent glue from entering between the column and the coil during glue injection.

[0018] 3. The positioning column can limit the position of the column and improve the stability thereof. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more directly illustrate the prior art and the present application, the following exemplary drawings are given. It should be understood that the specific shapes, structures shown in the drawings should not be regarded as limiting conditions in the implementation of the present application; for example, based on the technical concept disclosed in the present application and the exemplary drawings, those skilled in the art can easily make routine adjustments or further optimization on the increase / decrease / attribute division of certain units (components), specific shapes, positional relationship, connection mode, size ratio relationship, etc.

[0020] Figure 1 A single tool structure schematic diagram of a coil glue injection tool provided for an embodiment of the present application;

[0021] Figure 2 A whole structure schematic diagram of a coil glue injection tool provided for an embodiment of the present application.

[0022] Explanation of reference signs:

[0023] 1 coil; 2 housing; 3 stand; 31 column; 32 clamping table; 4 gasket; 5 first fixing screw; 6 base; 7 positioning column; 8 second fixing screw; 9 stop. DETAILED DESCRIPTION

[0024] The application will be further described in detail below with reference to the accompanying drawings.

[0025] In the description of the present application: unless otherwise specified, the meaning of "a plurality of" is two or more. The terms "first", "second", "third" and the like in the present application are intended to distinguish the objects referred to, and do not have a special meaning in the technical connotation aspect (for example, it should not be understood as emphasizing importance or order, etc.). The expressions "include", "contain", "have" and the like also mean "not limited to" (certain units, components, materials, steps, etc.).

[0026] The terms such as "upper", "lower", "left", "right", "intermediate" and the like referred to in the present application are generally indications made for the purpose of intuitive understanding with reference to the accompanying drawings, and are not absolute limitations on the positional relationship in the actual product.

[0027] A coil glue injection tool, with reference to Figure 1 and Figure 2 , used in the injection operation of the coil 1 and the housing 2, the tool includes a stand 3 and a gasket 4. The stand 3 includes a column 31 and a clamping table 32 arranged at the bottom of the column 31, the column 31 and the clamping table 32 are coaxially arranged, and the diameter of the clamping table 32 is greater than the diameter of the column 31.

[0028] The diameter of the column 31 is matched with the inner diameter of the coil 1, the bottom of the housing 2 is provided with a circular stop 9, and the diameter of the clamping table 32 is matched with the diameter of the stop 9 at the bottom of the housing 2. When the stop 9 at the bottom of the housing 2 cooperates with the clamping table 32 and the coil 1 cooperates with the column 31, the circumferential wall of the main body is in contact with the inner wall of the coil 1, and the inner side wall of the stop 9 is in contact with the circumferential wall of the clamping table 32, so that there is a certain annular gap between the outer circle of the coil 1 and the inner wall of the housing 2. Under the positioning action of the stand 3, the coil 1 and the housing 2 are coaxial.

[0029] Specifically, the height of the clamping table 32 is greater than the depth of the stop 9, and through this limitation, when the housing 2 is sleeved on the clamping table 32, the bottom of the housing 2 does not contact the table top.

[0030] In order to prevent glue from entering between the column 31 and the coil 1 during the glue injection process, the top of the column 31 and the coil 1 can be covered by the gasket 4, so as to form a closed state for the two, so that the glue can only flow into the annular gap between the coil 1 and the housing 2.

[0031] The gasket 4 is further matched with a first fixing screw 5 for fixing the gasket 4 on the column 31, and a threaded hole corresponding to the first fixing screw 5 is formed in the top of the column 31 and coaxially arranged with the column 31.

[0032] Further, in order to ensure the sealing effect of the gasket 4, the height of the column 31 is limited, and it is required to ensure that the top surface of the coil 1 is flush with the top surface of the column 31 after the coil 1 is matched with the column 31.

[0033] After the gasket 4 is completely covered, the first fixing screw 5 is passed through the gasket 4 and is screwed into the threaded hole in the top of the column 31, and the gasket 4 is connected with the column 31 through the first fixing screw 5 to prevent the gasket 4 from being displaced during the glue injection process.

[0034] Since the glue injection equipment usually includes multiple glue injection heads, the tool is further provided with a base 6, and multiple columns 3 are uniformly arranged on the base 6, and the size and station of the columns 3 can be set according to the production capacity and the number of glue injection machines.

[0035] A plurality of positioning columns 7 are fixed perpendicularly on the upper surface of the base 6, and the number and position of the positioning columns 7 correspond to the columns 3 one by one to limit the position of the columns 3. A positioning hole is coaxially formed in the bottom of the column 3 and is matched with the positioning column 7.

[0036] In order to improve the stability of the column 3 on the base 6, a second fixing screw 8 is coaxially arranged in the positioning column 7, and a threaded hole is coaxially formed in the bottom of the column 3 and is screwed with the second fixing screw 8, so as to fix the column 3 on the base 6.

[0037] In the embodiment of the application, the gasket 4 can be made of plastic.

[0038] The implementation principle of the embodiment of the application is that the shell 2 is sleeved on the column 3, and the bottom stopper 9 is matched with the clamping table 32; after the coil 1 is sleeved on the column 31, the coil 1, the shell 2 and the column 3 are in a coaxial state.

[0039] The pretreated glue is injected into the annular gap between the coil 1 and the shell through the glue injection machine along the outer edge of the coil 1. After the glue finally fills the annular gap, the first fixing screw 5 is removed with a screwdriver after a period of time, and the plastic gasket 4 is gently lifted to complete the glue injection after solidification.

[0040] The technical features of the above embodiments can be combined in any way (as long as the combination of the technical features does not exist contradiction), and in order to make the description simple, not all possible combinations of the technical features in the above embodiments are described; these embodiments which are not explicitly written should also be considered as the scope of the present application.

Claims

1. A coil glue injection tool, characterized in that: The stand (3) comprises a column (31) and a clamping base (32) at the bottom of the column (31), the column (31) and the clamping base (32) are coaxially arranged, and the diameter of the clamping base (32) is larger than that of the column (31); the diameter of the column (31) is matched with the inner diameter of the coil (1), and the diameter of the clamping base (32) is matched with the diameter of the stopper (9) at the bottom of the shell (2); when the stopper (9) at the bottom of the shell (2) is matched with the clamping base (32) and the coil (1) is matched with the column (31), there is a certain gap between the outer coil of the coil (1) and the inner wall of the shell (2).

2. The coil glue injection tooling apparatus of claim 1, wherein: The gasket (4) is used to cover the top of the column (31) and the coil (1) and seal them, and the first fixing screw (5) is matched on the gasket (4) to fix the gasket (4) on the column (31).

3. The coil glue injection tooling of claim 2, wherein: When the coil (1) is matched with the column (31), the top surface of the coil (1) is flush with the top surface of the column (31).

4. The coil glue injection tooling of claim 1, wherein: The base (6) is provided with a plurality of stands (3).

5. The coil glue injection tooling of claim 4, wherein: The base (6) is provided with a plurality of positioning columns (7), the positions and quantities of the positioning columns (7) correspond to those of the stands (3), and the bottom of the stand (3) is coaxially provided with a positioning hole, which is matched with the positioning column (7).

6. The coil glue injection tooling of claim 5, wherein: The inside of the positioning column (7) is coaxially provided with a second fixing screw (8), which is used to be threadedly matched with the stand (3).

7. The coil glue injection tooling of claim 2, wherein: The gasket (4) is made of plastic.

8. The coil glue injection tooling of claim 1, wherein: The height of the clamping base (32) is greater than the depth of the stopper (9).

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