Gluing sealing structure for injection molding insert

Abstract

The utility model discloses an injection molding insert rubberizing sealing structure which comprises a cover plate assembly, compact assemblies arranged on the two sides of the cover plate assembly and sealing assemblies arranged on the circumferences of the compact assemblies. The cover plate assembly comprises a sealing plate, preformed holes formed in the two sides of the sealing plate, and a liquid inlet hole formed in the middle of the sealing plate. The compact assembly comprises a pole, a plurality of attaching pieces arranged on the circumference of the pole and connecting pieces fixedly connected with the attaching pieces. The connecting piece is used for connecting an electrode slice in the storage battery with a pole; the sealing assembly comprises an inner expansion ring, an outer expansion ring arranged on the outer side of the inner expansion ring and a top ring arranged at the bottom of the inner expansion ring. The inner expansion ring and the outer expansion ring are both used for sealing the preformed hole; the secondary sealing of the attaching piece in the molten state is completed from the outside, and the post terminal is reinforced in a welding mode while the secondary sealing is completed.

Description

Technical Field

[0001] The utility model relates to the field related to injection molding insert sealing, in particular to an injection molding insert adhesive sealing structure. Background Art

[0002] The injection molding insert technology refers to a molding method in which, when the mold is open, inserts (such as metal parts and other embedded parts) are installed in the cavity, and then the mold is closed for injection molding. This method can combine the physical property advantages of different materials, meet the special performance requirements of new product design, shorten the product manufacturing process, and improve the reliability of the product. The injection molding insert technology is an important molding process in modern industrial production and is widely used in many fields such as automobiles, electronics, and household appliances, especially in the production process of battery poles. However, in the existing device, such as the utility model patent 202121006962.X, a plastic injection molding insert, it has a first section, a second section, and a third section along the thickness direction: along at least one of the length and width directions of the plastic injection molding insert, at least the outer dimension of the first section and / or the third section in one direction is greater than the outer dimension in the other direction; the outer dimension of the second section in at least one direction is greater than the outer dimension of the first section and / or the third section; along the thickness direction of the plastic injection molding insert, the cavity side walls of the first section are completely aligned with the cavity side walls of the third section; positioning and orientation devices are provided on the cavity side walls of the first section and the third section; the distance between the upper plane of the first section and the cavity bottom surface of the third section is equal to the distance between the lower plane of the third section and the cavity bottom surface of the first section; a circular through hole is provided between the cavity bottom surfaces of the first section and the third section.

[0003] In the existing technology, especially in the production of batteries, when using the injection molding insert process, there are several capillary voids on the circumference of the pole, resulting in capillary phenomenon of the electrolyte inside the battery, gradually infiltrating along the voids and climbing upward along the pole, and finally resulting in liquid leakage at the pole.

[0004] Therefore, it is necessary to improve an injection molding insert adhesive sealing structure in the existing technology to solve the above problems. Summary of the Invention

[0005] The utility model overcomes the deficiencies of the existing technology and provides an injection molding insert adhesive sealing structure, aiming to solve the problems in the existing technology.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: an injection molding insert adhesive sealing structure, including: a cover plate assembly, a compact assembly arranged on both sides of the cover plate assembly, and a sealing assembly arranged on the circumference of the compact assembly;

[0007] The cover plate assembly includes: a sealing plate, reserved holes opened on both sides of the sealing plate, and a liquid inlet hole opened at the middle position of the sealing plate; the reserved holes are used to place the pole columns, and the liquid inlet hole is arranged at the middle position between the two reserved holes;

[0008] The compact assembly includes: a pole column, a plurality of fitting pieces arranged on the circumference of the pole column, and a connecting piece fixedly connected to the fitting pieces; the connecting piece is used to connect the electrode plates inside the battery to the pole column;

[0009] The sealing assembly includes: an inner expansion ring, an outer expansion ring arranged outside the inner expansion ring, and a top ring arranged at the bottom of the inner expansion ring; both the inner expansion ring and the outer expansion ring are used to seal the reserved hole.

[0010] In a preferred embodiment of the present utility model, a hole cover is threadedly connected to the liquid inlet hole, and the liquid inlet hole is used to control the inflow and outflow of the electrolyte.

[0011] In a preferred embodiment of the present utility model, the compact assembly further includes a bolt, threads are provided on the outside of the fitting piece, and the bolt is threadedly connected to the fitting piece.

[0012] In a preferred embodiment of the present utility model, the pole column, the fitting piece, and the connecting piece are all made of the same material.

[0013] In a preferred embodiment of the present utility model, the connecting piece includes: a plurality of connecting shafts, and a top ball fixedly connected to the connecting shafts; the connecting shafts are fixedly connected to the fitting pieces.

[0014] In a preferred embodiment of the present utility model, a receiving groove is provided on the side of the top ball close to the pole column, and the size of the receiving groove is the same as that of the pole column.

[0015] In a preferred embodiment of the present utility model, the inner expansion ring is arranged outside the circumference of the fitting piece, and the outer expansion ring is arranged outside the circumference of the inner expansion ring.

[0016] In a preferred embodiment of the present utility model, the top ring is arranged at the bottom of the inner expansion ring and the outer expansion ring, and the top ring is fixedly connected to the bottoms of the inner expansion ring and the outer expansion ring respectively.

[0017] In a preferred embodiment of the present utility model, the bottom of the top ring is arranged in a concave shape towards the inside, and an adhesive is provided in the concave part of the top ring, and the adhesive contacts the top of the top ball.

[0018] In a preferred embodiment of the present utility model, the inner expansion ring, the outer expansion ring, and the top ring are all made of rubber material.

[0019] The present utility model solves the defects existing in the background technology, and the present utility model has the following beneficial effects:

[0020] 1. The utility model provides an injection-molded insert adhesive sealing structure. Through the mutual cooperation of the bonding sheet, the top ball and the top ring, by raising the position of the bonding sheet, the top ball moves upward, and then the top ring pushes the inner expansion ring and the outer expansion ring upward to bend and deform. Compared with the prior art, the device performs the first sealing from the inside through the deformation of the sealing component, and then melts the redundant bonding sheet by welding, so that the molten bonding sheet completes the second sealing from the outside. And at the same time of completing the second sealing, the pole column is strengthened by welding.

[0021] 2. The utility model provides an injection-molded insert adhesive sealing structure. Through the mutual cooperation of the bonding sheet and the sealing component, the upward movement of the top ball is driven by the bonding sheet, so that the inner expansion ring and the outer expansion ring are extruded. And the upward movement of the top ball is similar to the upward movement of a conical object, so as to drive the inner expansion ring and the outer expansion ring to expand outward, thereby blocking the gap between the sealing plate and the pole column from the bottom of the sealing plate. At the same time, the bonding sheet outside the battery undergoes melting through electric welding, and a blockage is formed again on the sealing plate outside the battery. Compared with the prior art, the gap is blocked for the first time from the bottom through the expansion of the sealing component and the gap is blocked for the second time from the outside of the battery through the melting of the bonding sheet. The occurrence of capillary phenomenon at the battery pole column is effectively reduced through the combination of the two blockages inside and outside.

[0022] 3. The utility model provides an injection-molded insert adhesive sealing structure. Through the mutual cooperation of the bonding sheet and the bolt, by rotating the bolt to drive the upward movement of the bonding sheet, and then drive the upward movement of the top ball, so as to seal and fix the pole column. And through the melting operation on the bonding sheet, the molten bonding sheet flows along the pole column to the bolt. After the molten bonding sheet cools and solidifies, while sealing the gap between the pole column and the sealing plate, the solidified bonding sheet adheres the bolt and the pole column together, thereby improving the stability of the pole column. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The following further illustrates the present utility model in conjunction with the drawings and embodiments;

[0024] Figure 1 is the three-dimensional structure diagram of the preferred embodiment of the present utility model;

[0025] Figure 2 is the sectional structure diagram of the overall structure of the preferred embodiment of the present utility model;

[0026] In the figure: 1. Cover plate assembly; 10. Sealing plate; 11. Reserved hole; 12. Liquid inlet hole;

[0027] 2. Compact component; 20. Terminal post; 21. Fitting piece; 22. Connecting shaft; 23. Top ball

[0028] 3. Sealing component; 30. Inner expansion ring; 31. Outer expansion ring; 32. Top ring Detailed implementation mode

[0029] Now, the present utility model will be further described in detail with reference to the accompanying drawings and embodiments. These drawings are all simplified schematic diagrams, only showing the basic structure of the present utility model in a schematic way, so they only show the components related to the present utility model

[0030] As Figure 1 shown, an injection molded insert bonding and sealing structure includes: a cover plate assembly 1, compact components 2 arranged on both sides of the cover plate assembly 1, and a sealing component 3 arranged on the circumference of the compact components 2

[0031] It should be noted that the production process of the battery terminal post 20 is one of the injection molded insert production processes. The cover plate assembly 1 is a part of the top of the battery case. The compact components 2 are the terminal post 20 parts on both sides of the top of the battery. The sealing component 3 is arranged on the circumference of the terminal post 20 to seal the terminal post 20 and prevent the electrolyte inside the battery from leaking

[0032] The cover plate assembly 1 includes: a sealing plate 10, reserved holes 11 opened on both sides of the sealing plate 10, and a liquid inlet hole 12 opened in the middle position of the sealing plate 10. The reserved holes 11 are used to place the terminal post 20, and the liquid inlet hole 12 is arranged at the middle position between the two reserved holes 11

[0033] In a preferred embodiment of the present utility model, a hole cover is threadedly connected to the liquid inlet hole 12, and the liquid inlet hole 12 is used to control the entry and exit of the electrolyte

[0034] It should be noted that the sealing plate 10 is a rectangular plate and serves as the cover plate on the top of the battery, and is fixedly connected to the outer shell of the battery through bolts. Reserved holes 11 and a liquid inlet hole 12 are respectively opened on the sealing plate 10. The position of the liquid inlet hole 12 corresponds to the groove for placing the electrode plate inside the battery and is directly above the groove for placing the electrode plate. Thus, when adding electrolyte to the battery, the hole cover on the top of the liquid inlet hole 12 can be directly opened, the electrolyte can be directly added from the liquid inlet hole 12, and then the hole cover is covered. The reserved holes 11 are opened on both sides of the sealing plate 10 for placing the terminal posts 20 of the battery

[0035] As Figure 2 shown, the compact component 2 includes: a terminal post 20, a plurality of fitting pieces 21 arranged on the circumference of the terminal post 20, and a connecting member fixedly connected to the fitting pieces 21. The connecting member is used to connect the electrode plate inside the battery to the terminal post 20

[0036] In a preferred embodiment of the present utility model, the compact component 2 further includes a bolt. A thread is provided on the outer side of the fitting piece 21, and the bolt is threadedly connected to the fitting piece 21.

[0037] In a preferred embodiment of the present utility model, the pole column 20, the fitting piece 21, and the connecting member are all made of the same material.

[0038] In a preferred embodiment of the present utility model, the connecting member includes: a plurality of connecting shafts 22, and a top ball 23 fixedly connected to the connecting shaft 22; the connecting shaft 22 is fixedly connected to the fitting piece 21.

[0039] In a preferred embodiment of the present utility model, the top ball 23 is provided with a receiving groove on the side close to the pole column 20, and the size of the receiving groove is the same as that of the pole column 20.

[0040] It should be noted that the production between the pole column 20 and the sealing plate 10 is carried out by an injection molding insert process, that is, during the injection molding of the sealing plate 10, the pole column 20 is placed at the position of the reserved hole 11 in the mold. Thus, when the sealing plate 10 is injection molded, the pole column 20 is located at the reserved hole 11 of the sealing plate 10, and the sealing plate 10 and the pole column 20 are fixedly connected. Four protruding shafts are provided on the inner circumference of the reserved hole 11 of the sealing plate 10, and the sealing plate 10 is fixedly connected to the pole column 20 through the protruding shafts. At the same time, a gap is formed on the circumference of the pole column 20 between the sealing plate 10 and the pole column 20. The fitting piece 21 is arranged in the gap, and the fitting piece 21 extends from the top of the pole column 20 to the bottom of the pole column 20. A connecting shaft 22 is fixedly connected to the bottom of the fitting piece 21, the bottom of the connecting shaft 22 is fixedly connected to the top ball 23, and threads are provided on the outer circumference of both the connecting shaft 22 and the fitting piece 21. A bolt is engaged with the thread on the outer circumference of the fitting piece 21. The bolt is arranged outside the battery, while the top ball 23 is arranged inside the battery, and a cylindrical receiving groove having the same size as the pole column 20 is provided at one end of the top ball 23 close to the pole column 20. As the bolt rotates, the bolt is screwed to fit against the outer surface of the sealing plate 10, and the bolt is continuously rotated. At this time, the bolt is blocked by the sealing plate 10 and cannot move downward, and the pole column 20 and the sealing plate 10 are fixed and cannot move. Thereby, the fitting piece 21 and the connecting shaft 22 located inside the battery fit against the pole column 20 and slide upward until the bottom of the pole column 20 is stuck inside the receiving groove and the bolt is completely fixed. A connecting plate is fixedly connected to one side of the top ball 23, and the connecting plate is used to connect to the electrode plate inside the battery.

[0041] The sealing component 3 includes: an inner expansion ring 30, an outer expansion ring 31 arranged outside the inner expansion ring 30, and a top ring 32 arranged at the bottom of the inner expansion ring 30; both the inner expansion ring 30 and the outer expansion ring 31 are used for sealing the reserved hole 11.

[0042] In a preferred embodiment of the present utility model, the inner expansion ring 30 is disposed on the outer circumference of the fitting piece 21, and the outer expansion ring 31 is disposed on the outer circumference of the inner expansion ring 30.

[0043] In a preferred embodiment of the present utility model, the top ring 32 is disposed at the bottom of the inner expansion ring 30 and the outer expansion ring 31, and the top ring 32 is fixedly connected to the bottoms of the inner expansion ring 30 and the outer expansion ring 31 respectively.

[0044] In a preferred embodiment of the present utility model, the bottom of the top ring 32 is recessed inward, and an adhesive is provided in the recessed portion of the top ring 32, and the adhesive contacts the top of the top ball 23.

[0045] In a preferred embodiment of the present utility model, the inner expansion ring 30, the outer expansion ring 31 and the top ring 32 are all made of rubber.

[0046] It should be noted that the inner expansion ring 30, the outer expansion ring 31 and the top ring 32 are all made of rubber, and the inner expansion ring 30 is disposed to fit the outer circumference of the fitting piece 21, and the outer expansion ring 31 is disposed to fit the outer circumference of the inner expansion ring 30. Thus, the structure from the inside to the outside is successively the structure of the terminal post 20, the fitting piece 21, the inner expansion ring 30 and the outer expansion ring 31. And the lengths of the inner expansion ring 30 and the outer expansion ring 31 are the distances between the top ball 23 and the sealing plate 10 before the bolt is turned. And both the inner expansion ring 30 and the outer expansion ring 31 are fixedly connected to the top ring 32 at the bottom. The top ring 32 is provided in a groove shape covering the upper half of the top ball 23, and the top ring 32 is provided with a through hole at a position corresponding to the receiving groove, so that when the terminal post 20 enters the receiving groove, it will not be blocked by the top ring 32, and the inner side of the top ring 32 and the outer side of the top ball 23 are fixedly adhered by the adhesive.

[0047] When the present utility model is in use, by turning the bolt, the fitting piece 21 on the outer circumference of the terminal post 20 moves upward, thereby driving the top ball 23 inside the battery to move upward. Since the top ring 32 is disposed to fit the upper half of the top ball 23, the top ring 32 moves upward. And because the inner expansion ring 30 and the outer expansion ring 31 are both made of rubber, the inner expansion ring 30 and the outer expansion ring 31 are forced to expand and bend outward, completely blocking the gap between the inner side of the terminal post 20 and the sealing plate 10, so that the liquid inside the battery cannot flow out from here. When the terminal post 20 enters the receiving groove, the bolt cannot be turned at all. At this time, a carbon rod is used for electric welding, and the fitting piece 21 above the bolt and the connecting shaft 22 are melted by high temperature and flow downward along the connecting shaft 22. After solidification, the gap between the sealing plate 10 and the terminal post 20 is blocked again outside the sealing plate 10.

[0048] Based on the above enlightenment of the ideal embodiments of the present utility model, through the above description, relevant personnel can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. An injection molded insert glue sealing structure, comprising: A cover plate assembly (1), a compact assembly (2) arranged on both sides of the cover plate assembly (1), and a sealing assembly (3) arranged on the circumference of the compact assembly (2), characterized in that: The cover plate assembly (1) comprises: a sealing plate (10), reserved holes (11) provided on both sides of the sealing plate (10), and a liquid inlet hole (12) provided in the middle of the sealing plate (10); the reserved holes (11) are used to place the poles (20), and the liquid inlet hole (12) is provided in the middle of the two reserved holes (11); The compact assembly (2) comprises: a pole (20), a plurality of bonding sheets (21) arranged on the circumference of the pole (20), and a connecting piece fixedly connected to the bonding sheets (21); the connecting piece is used to connect the electrode sheet inside the battery to the pole (20); The sealing assembly (3) comprises: an inner expansion ring (30), an outer expansion ring (31) arranged outside the inner expansion ring (30), and a top ring (32) arranged at the bottom of the inner expansion ring (30); the inner expansion ring (30) and the outer expansion ring (31) are both used to seal the reserved hole (11).

2. The injection molded insert adhesive sealing structure according to claim 1, characterized in that: A hole cover is threadedly connected to the liquid inlet hole (12), and the liquid inlet hole (12) is used to control the inlet and outlet of electrolyte.

3. The injection molded insert adhesive sealing structure according to claim 1, characterized in that: The compact assembly (2) further comprises a bolt, a thread is formed on the outer side of the fitting sheet (21), and the bolt is connected to the fitting sheet (21) via the thread.

4. The injection molded insert adhesive sealing structure according to claim 1, characterized in that: The pole (20), the bonding sheet (21) and the connecting piece are all made of the same material.

5. The injection molded insert adhesive sealing structure according to claim 1, characterized in that: The connecting member comprises: a plurality of connecting shafts (22) and a top ball (23) fixedly connected to the connecting shafts (22); the connecting shafts (22) are fixedly connected to the bonding sheet (21).

6. The injection molded insert adhesive sealing structure according to claim 5, characterized in that: The top ball (23) is provided with a receiving groove on a side close to the pole (20), and the size of the receiving groove is the same as that of the pole (20).

7. The injection molded insert adhesive sealing structure according to claim 1, characterized in that: The inner expansion ring (30) is arranged outside the circumference of the bonding sheet (21), and the outer expansion ring (31) is arranged outside the circumference of the inner expansion ring (30).

8. The injection molded insert adhesive sealing structure according to claim 1, characterized in that: The top ring (32) is arranged at the bottom of the inner expansion ring (30) and the outer expansion ring (31), and the top ring (32) is fixedly connected to the bottom of the inner expansion ring (30) and the outer expansion ring (31), respectively.

9. The injection molded insert adhesive sealing structure according to claim 5, characterized in that: The bottom of the top ring (32) is arranged in an inwardly concave shape, and the concave portion of the top ring (32) is provided with adhesive, and the adhesive contacts the top of the top ball (23).

10. The injection molded insert adhesive sealing structure according to claim 1, characterized in that: The inner expansion ring (30), the outer expansion ring (31) and the top ring (32) are all made of rubber material.

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