Glue pouring head and glue pouring equipment
By setting a gap between the support and extension of the dispensing head and using a rigid inner tube, the problem of fatigue damage caused by uneven stress on the dispensing head is solved, the service life is extended and glue overflow is reduced, and the reliability of the dispensing process is improved.
Patent Information
- Application Number
- CN202423270192.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing dispensing heads are prone to fatigue damage due to uneven stress during frequent use, which affects their service life.
The design incorporates a space between the support and extension sections of the dispensing head, forming multiple edges and transition surfaces to mitigate differences in deformation, prevent direct damage from sharp corners, and improve flow smoothness through a rigid inner tube.
Extends the service life of the dispensing head, reduces glue overflow, lowers the risk of product surface contamination, and improves the reliability of the dispensing process.
Smart Images
Figure CN223818998U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of glue injection, and in particular to a glue injection head and glue injection equipment. BACKGROUND
[0002] After part of product processing is completed, the product has a cavity inside, and parts are arranged in the cavity. In order to waterproof and seal the parts in the cavity, glue needs to be injected into the product. In general, a glue injection port is arranged on the product, and glue injection equipment is used to inject glue into the cavity through the glue injection port.
[0003] The glue injection head in the related art is generally made of soft material such as plastic. When glue is injected, a downward pressure needs to be applied to the glue injection head to ensure that the glue injection head is tightly attached to the product to avoid glue overflow. However, frequent stress may cause fatigue, cracks and other conditions of the glue injection head, affecting the service life. CONTENT OF THE UTILITY MODEL
[0004] The application provides a glue injection head and glue injection equipment, so as to improve the reliability and service life of the glue injection head.
[0005] A glue injection head comprises a main body portion, a first channel arranged inside the main body portion, the main body portion having an axis and an end face at one end of the axis, an extension portion protruding from the end face, a second channel arranged inside the extension portion, the second channel being in communication with the first channel, and a support portion protruding from the end face, a space being left between the support portion and the extension portion, and the support portion being used to abut against the surface of a product.
[0006] The above technical solution is implemented. When the glue injection head is used to inject glue, the glue injection head is pressed against the glue injection port of the product, so that the support portion abuts against the circumferential surface of the product at the glue injection port, and the extension portion extends into the glue injection port. In this way, when the glue injection head is subjected to pressure along the axis, the support portion is blocked by the surface of the product, while the extension portion has a tendency to continue to deform due to being pressed into the glue injection port. In the embodiment of the application, a space is designed between the support portion and the extension portion. The existence of the space causes the support portion and the extension portion not to form a straight edge directly, but to form a plurality of edges and transition surfaces. This makes the deformation allowance between the support portion and the extension portion larger, that is, the out-of-sync deformation amount between the extension portion and the support portion can be more gently absorbed and neutralized by the space, thereby avoiding the situation that the edges between the extension portion and the support portion are damaged by being pulled in the traditional technology.
[0007] As one of the optional embodiments of the present solution, the support portion is annular and surrounds the outside of the extension portion.
[0008] As one of the optional embodiments of the present solution, in the direction of the axis, the protruding size of the support portion is L1, and the protruding size of the extension portion is L2, and L1 < L2 is satisfied.
[0009] The extension part can extend into the product cavity, thereby occupying part of the cavity space during glue filling, and the occupied space can serve as a backflow allowance space when the glue filling head is withdrawn, thereby reducing the overflow of glue from the glue filling port. It can be understood that when the extension part extends into the cavity for glue filling, the pressure in the cavity increases, and when the glue filling head is withdrawn, the air pressure at the glue filling port position is much lower than the pressure in the cavity, and the glue tends to flow back to the glue filling port position. The overflow of glue from the glue filling port will cause the product surface to be dirty and the like, which needs to be processed, and in the embodiments of the present application, the backflow allowance space is reserved by the design of the extension part to reduce the overflow of glue.
[0010] As one of the optional embodiments of the present scheme, the extension part has a circumferential side surface around the axis, and in the direction away from the end surface, the circumferential side surface is gradually inclined to the axis of the main body part.
[0011] As one of the optional embodiments of the present scheme, the extension part is a circular truncated cone, and the circumferential side surface is an arc surface.
[0012] The above technical scheme is realized, avoiding the interference of the glue filling port with the extension part, and the extension part can extend into the glue filling port more smoothly. On the other hand, since the circumferential side surface is inclined to the axis, the included angle between the circumferential side surface and the part of the end surface in the interval space is greater than ninety degrees, which makes the transition from the end surface to the circumferential side surface more gentle, reducing the possibility of damage to the transition edge of the circumferential side surface and the end surface.
[0013] As one of the optional embodiments of the present scheme, the first channel and the second channel both extend along the axis of the main body part.
[0014] As one of the optional embodiments of the present scheme, a rigid inner tube is further included, the rigid inner tube is arranged in the first channel and the second channel, and the rigid inner tube is fixedly connected to the inner wall of the first channel and the second channel.
[0015] As one of the optional embodiments of the present scheme, the extension part has a base surface away from the main body part, one end of the rigid inner tube close to the extension part is flush with the base surface, and the other end of the rigid inner tube extends outward compared to the main body part.
[0016] The above technical scheme is realized, and the glue finally passes through the rigid inner tube. Due to the setting of the rigid inner tube, the flow channel in the rigid inner tube is less affected, for example, when the glue filling head is extruded and deformed, the flow channel in the rigid inner tube is basically not affected, thereby ensuring the smoothness of the glue flow process, and the rigid inner tube can improve the overall rigidity of the glue filling head, facilitating installation.
[0017] As one of the optional embodiments of the present scheme, the main body part, the support part, and the extension part are all made of plastic material.
[0018] A dispensing device, comprising a dispensing head as described above.
[0019] One of the above technical solutions has the following advantages or beneficial effects: When using the dispensing head for dispensing, the dispensing head is pressed against the dispensing port of the product, so that the support part abuts against the peripheral surface of the product at the dispensing port, and the extension part extends into the dispensing port. In this way, when the dispensing head is subjected to pressure along the axis, the support part is blocked by the product surface, while the extension part tends to continue to deform due to being squeezed into the dispensing port. In the embodiment of this application, since a space is designed between the support part and the extension part, the existence of the space makes it not a direct edge between the support part and the extension part, but multiple edges and transition surfaces are formed. This makes there a larger deformation margin between the support part and the extension part. That is, the asynchronous deformation between the extension part and the support part can be more gently absorbed and neutralized by the space, thereby avoiding the situation where the edges between the extension part and the support part are pulled and damaged in the traditional technology. Attached Figure Description
[0020] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.
[0021] Figure 1 This is a structural diagram of the relevant background technology provided in the embodiments of this application;
[0022] Figure 2 This is a cross-sectional view of the exploded state of the dispensing head provided in the embodiments of this application;
[0023] Figure 3 This is an overall cross-sectional view of the dispensing head provided in the embodiments of this application;
[0024] Figure 4 This is an overall structural diagram of the dispensing head provided in the embodiments of this application;
[0025] Figure 5 This is a structural diagram of the dispensing head in use provided in the embodiments of this application.
[0026] Reference numerals: 1. Main body; 10. First channel; 11. End face; 1a. Axis;
[0027] 2. Extension; 20. Second channel; 21. Peripheral side surface; 22. Base surface;
[0028] 3. Supporting section; 4. Spacing; 5. Rigid inner tube;
[0029] 100. Outer shell; 101. Glue inlet; 102. Cavity;
[0030] 200, body; 201, glue inlet channel; 202, edge; 203, protrusion
[0031] A, first part; B, second part. DETAILED DESCRIPTION
[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative work are within the scope of protection of the present application.
[0033] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the term "and / or" in the present application is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " in the present application generally represents an "or" relationship between the associated objects without special explanation.
[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative work are within the scope of protection of the present application. Figures 1-5 The present application is further described.
[0035] Reference Figure 1 The structure of the glue filling head of the prior art and the structure during glue filling are shown in the schematic diagram. The glue filling head comprises a body 200 and a protrusion 203, a glue inlet channel 201 is arranged in the body 200 and the protrusion 203, and an edge 202 is formed between the body 200 and the protrusion 203. The product comprises an outer shell 100, the outer shell 100 has a cavity 102, and a glue filling opening 101 is formed in the outer shell 100 and communicates with the cavity 102.
[0036] When the glue filling operation is performed, the body 200 is abutted against the outer shell 100 at the circumferential side surface 21 of the glue filling opening 101, and glue is injected into the cavity 102 through the glue inlet channel 201.
[0037] In order to maintain the sealing performance, downward pressure needs to be applied to the glue filling head so that the body 200 is tightly abutted against the surface of the outer shell 100. Since the body 200 and the protrusion 203 are both made of plastic material, when the downward pressure is applied to the glue filling head, the body 200 will be deformed by extrusion.
[0038] Wherein the definition: the first part A corresponds to the part above the glue inlet 101 of the main body 200, and the second part B corresponds to the part above the surface in contact between the main body 200 and the shell 100, and the deformation of the second part B is inhibited due to the stroke limiting of the shell 100, that is, the small arrow part in the figure, and the deformation is small, but the first part A will continue to deform downward, that is, the large arrow part in the figure. Due to the asynchronous deformation of the first part A and the second part B, the edges 202 adjacent to each other are pulled and deformed, resulting in damage to the edges 202. In the process of frequent use, fatigue damage is easy to cause, resulting in a decrease in the service life of the glue pouring head.
[0039] Referring to Figures 2-5 , a glue pouring head provided in the present application comprises a main body part 1, an extension part 2 and a support part 3 arranged at one end of the main body part 1.
[0040] Specifically, referring to Figures 1-4 , the extension part 2 and the support part 3 are integrally connected to the main body part 1, and all of them are made of flexible material. In one example, the main body part 1, the extension part 2 and the support part 3 are all made of plastic material.
[0041] Among them, the main body part 1 is arranged in a cylindrical shape, and the main body part 1 has an axis 1a, a first channel 10 is coaxially arranged in the main body 200 along the axis 1a, and the main body part 1 has an end face 11 at one end of the axis 1a.
[0042] The extension part 2 is protruded on the end face 11, and a second channel 20 is coaxially arranged in the extension part 2 along the axis 1a, and the second channel 20 has the same diameter as the first channel 10 and is in communication with the first channel 10.
[0043] The support part 3 is protruded on the end face 11, and there is a spacing space 4 between the support part 3 and the extension part 2, referring to Figure 5 , in the use state, the support part 3 abuts against the surface of the shell 100, and the extension part 2 at least partially extends into the glue inlet 101.
[0044] Referring to Figure 5 , when the glue pouring head is used for glue pouring, the glue pouring head is pressed on the glue inlet 101 of the product, so that the support part 3 abuts against the circumferential surface of the product at the glue inlet 101, and the extension part 2 extends into the glue inlet 101. In this way, when the glue pouring head is subjected to pressure along the axis 1a, the support part 3 is blocked by the surface of the product, and the extension part 2 has a tendency to continue to deform due to being pressed and extending into the glue inlet 101. In the embodiment of the present application, the spacing space 4 is designed between the support part 3 and the extension part 2.
[0045] The interval space 4 makes the support part 3 and the extension part 2 not directly form an edge, but form multiple edges and transition surfaces, which makes the support part and the extension part have a larger deformation allowance, i.e., the deformation amount that is out of synchronization between the extension part and the support part can be more gently absorbed and neutralized by the interval space, thereby avoiding the situation that the edges between the extension part and the support part are damaged by being pulled in the prior art.
[0046] With reference to Figure 3 and Figure 4 As one of the optional embodiments of the present scheme, the support part 3 is annularly arranged outside the extension part 2.
[0047] As one of the optional embodiments of the present scheme, in the direction of the axis 1a, the size of the protrusion of the support part 3 is L1, and the size of the protrusion of the extension part 2 is L2, which satisfies L1 < L2.
[0048] More specifically, the depth of the glue pouring port 101 is set as M, and it is necessary to ensure that the difference between L2 and L1 is greater than M.
[0049] This makes the extension part 2 be able to extend into the product cavity 102, thereby occupying part of the space of the cavity 102 during glue pouring, and the part of the occupied space can be used as a backflow allowance space when the glue pouring head is withdrawn, thereby reducing the situation that the glue overflows from the glue pouring port 101. It can be understood that when the extension part 2 extends into the cavity 102 for glue pouring, the pressure in the cavity 102 increases, and when the glue pouring head is withdrawn, the air pressure at the position of the glue pouring port 101 is much lower than the pressure in the cavity 102, and the glue tends to backflow to the position of the glue pouring port 101, which will cause the product surface to be dirty and the like, and time-consuming processing is required. In the embodiment of the present application, the backflow allowance space is reserved by the design of the extension part 2, thereby reducing the situation that the glue overflows.
[0050] As one of the optional embodiments of the present scheme, the extension part 2 has a circumferential side surface 21 surrounding the axis 1a, and in the direction away from the end surface 11, the circumferential side surface 21 is gradually inclined to the axis 1a of the main body part 1. The extension part 2 also has a base surface 22 away from the main body part 1. More specifically, the extension part 2 is in the shape of a circular truncated cone, and the area of the side of the extension part 2 in contact with the end surface 11 is greater than the area of the base surface 22, i.e., the extension part 2 is in the structure of an inverted circular truncated cone, and the rotation axis of the extension part 2 is coaxial with the axis 1a. At this time, the circumferential side surface 21 of the extension part 2 is an arc surface.
[0051] The technical solution is implemented to avoid the interference of the glue pouring port 101 with the extension part 2, and the extension part 2 is more smoothly extended into the glue pouring port 101. On the other hand, the circumferential side surface 21 is arranged to be inclined towards the axis 1a, which makes the angle α between the circumferential side surface 21 and the part of the end surface 11 located in the spacing space 4 greater than 90 degrees, which makes the transition of the end surface 11 to the circumferential side surface 21 more gentle, and reduces the possibility of damage to the transition edge 202 of the circumferential side surface 21 and the end surface 11.
[0052] As one of the optional embodiments of the present application, the first channel 10 and the second channel 20 both extend along the axis 1a of the main body part 1. The glue pouring head further comprises a rigid inner tube 5, which is arranged in the first channel 10 and the second channel 20, and is fixedly connected to the inner wall of the first channel 10 and the second channel 20. One end of the rigid inner tube 5 close to the extension part 2 is flush with the base surface 22, and the other end of the rigid inner tube 5 extends outward relative to the main body part 1.
[0053] The technical solution is implemented to pass the glue through the rigid inner tube 5. Due to the arrangement of the rigid inner tube 5, the flow channel in the rigid inner tube 5 is less affected, for example, when the glue pouring head is subjected to extrusion deformation, the flow channel in the rigid inner tube 5 is basically not affected, thereby ensuring the smoothness of the glue flow process, and the rigid inner tube 5 can improve the overall rigidity of the glue pouring head, facilitating installation. In one example, the rigid inner tube 5 is a steel tube.
[0054] A glue pouring device comprises the glue pouring head as described above.
[0055] The above description is only some embodiments of the present application, and does not limit the scope of the present application in any form. The protection scope of the embodiments of the present application does not limit to this, and any person skilled in the art can easily think of simple modifications, equivalent changes and modifications within the technical scope disclosed by the embodiments of the present application, which should be covered within the protection scope of the embodiments of the present application.
Claims
1. A dispensing head, characterized in that, include: The main body (1) has a first channel (10) inside, and the main body (1) has an axis (1a) and an end face (11) located at one end of the axis (1a); An extension (2) protrudes from the end face (11), and a second channel (20) is provided inside the extension (2), which communicates with the first channel (10); and, A support part (3) protrudes from the end face (11), and a gap space (4) is left between the support part (3) and the extension part (2). The support part (3) is used to abut against the surface of the product.
2. The dispensing head as described in claim 1, characterized in that, The support portion (3) is arranged in a ring around the outside of the extension portion (2).
3. The dispensing head as described in claim 2, characterized in that, In the direction of the axis (1a), the size of the protrusion of the support (3) is L1, and the size of the protrusion of the extension (2) is L2, satisfying L1 < L2.
4. The dispensing head as described in claim 1, characterized in that, The extension (2) has a peripheral side surface (21) surrounding the axis (1a), and in a direction away from the end face (11), the peripheral side surface (21) is gradually inclined toward the axis (1a) of the main body (1).
5. The dispensing head as described in claim 4, characterized in that, The extension (2) is frustum-shaped, and the peripheral side (21) is arc-shaped.
6. The dispensing head as described in claim 1 or 4, characterized in that, Both the first channel (10) and the second channel (20) extend along the axis (1a) of the main body (1).
7. The dispensing head as described in claim 6, characterized in that, It also includes a rigid inner tube (5), which passes through the first channel (10) and the second channel (20), and is fixedly connected to the inner wall of the first channel (10) and the second channel (20).
8. The dispensing head as described in claim 7, characterized in that, The extension (2) has a base surface (22) facing away from the main body (1), one end of the rigid inner tube (5) near the extension (2) is flush with the base surface (22), and the other end of the rigid inner tube (5) extends outward relative to the main body (1).
9. The dispensing head as described in claim 1, characterized in that, The main body (1), support (3) and extension (2) are all made of plastic.
10. A dispensing device, characterized in that, include: The dispensing head as described in any one of claims 1-9.