Nozzle dustproof structure of glue spraying head of hot melt glue machine

Abstract

The utility model discloses a nozzle dustproof structure of a glue spraying head of a hot melt glue machine, which belongs to the technical field of hot melt glue machines and comprises a glue spraying pipe, a pulling block is slidably connected to the middle of the outer wall of the glue spraying pipe, and a plurality of elastic strips are fixedly connected to the top end of the pulling block at equal intervals. A protective cover is fixedly connected to the top end of the elastic strip, the bottom of the protective cover is rotationally connected to the top of the outer wall of the glue spraying pipe, and limiting mechanisms are arranged at the front end and the rear end of the middle of the interior of the glue spraying pipe and comprise two first equipment grooves which are formed in the front end and the rear end of the interior of the glue spraying pipe correspondingly; a spring is fixedly connected to the inner wall of the first equipment groove, and an elastic strip can be pulled through a pulling block to control opening and closing of a protective cover, so that dust, impurities or other particles can be prevented from entering a nozzle area, the cleanliness of a nozzle is guaranteed, and the next glue spraying effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hot melt adhesive machines, and more specifically to a nozzle dust-proof structure of a glue spraying head of a hot melt adhesive machine. Background Art

[0002] Hot melt adhesive machine is a device used to melt hot melt adhesive and apply it to the surface of workpiece. It is commonly used in various occasions such as industrial production, hand-made, packaging and repair.

[0003] In the prior art, the hot melt adhesive machine delivers liquid hot melt adhesive to the surface to be bonded, and then controls it through a nozzle, nozzle gun or pressure device to ensure the accuracy and uniformity of bonding. Since the nozzle mouth is exposed to the external environment, there is dust, tiny particles or other impurities in the external environment, which are adsorbed on the hot melt adhesive remaining at the nozzle mouth and then enter the surface of the object to be bonded through the next glue spraying operation, thereby reducing the bonding effect.

[0004] Therefore, in order to solve the above problems, a dust-proof structure for the nozzle of a hot melt adhesive spraying head is proposed. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a dust-proof structure for the nozzle of a hot melt glue machine spray head, which can control the opening and closing of the protective cover by pulling the elastic strip through a pulling block, thereby preventing dust, impurities or other particulate matter from entering the nozzle area, ensuring the cleanliness of the nozzle, and thus improving the effect of the next glue spraying and bonding.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A dust-proof structure for the nozzle of a hot melt glue machine spray head comprises a glue spray hose, a pulling block is slidably connected to the middle of the outer wall of the glue spray hose, a plurality of elastic strips are equidistantly fixedly connected to the top of the pulling block, a protective cover is fixedly connected to the top of the elastic strip, the bottom of the protective cover is rotatably connected to the top of the outer wall of the glue spray hose, and limiting mechanisms are arranged at the front and rear ends of the inner middle part of the glue spray hose.

[0010] Furthermore, the limiting mechanism includes two first equipment grooves, which are respectively opened at the front and rear ends of the spray hose, the inner wall of the first equipment groove is fixedly connected with a spring, the end of the spring is fixedly connected with a card ball, the front and rear ends of the top wall of the pulling block are both provided with first ball grooves, and the card ball is engaged with the first ball groove; a pushing component is provided at the bottom of the first equipment groove.

[0011] Furthermore, the pushing assembly includes two second device grooves, which are respectively opened at the bottom of the first device groove, the bottom wall of the spring is fixedly connected to the first connecting rod, the bottom wall of the first connecting rod is fixedly connected to the second connecting rod, the outer wall of the second connecting rod is fixedly connected to the pushing rod, and the outer wall of the pushing rod is fixedly connected to the pressing block.

[0012] Furthermore, the front and rear ends of the bottom wall of the pulling block are both provided with second ball grooves.

[0013] Furthermore, a groove is provided on the top of the outer wall of the pulling block.

[0014] Furthermore, a connecting ring is fixedly connected to the outer wall of the elastic strip.

[0015] Furthermore, the protective covers are tightly fitted to each other.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] (1) This solution controls the opening and closing of the protective cover by pulling the elastic strip through the pulling block, thereby preventing dust, impurities or other particles from entering the nozzle area, ensuring the cleanliness of the nozzle, and thus improving the effect of the next glue spraying.

[0019] (2) This solution can limit the pull block by engaging the locking ball with the ball groove on the outer wall of the pull block, thereby controlling the opening or closing of the dustproof device to ensure that the glue spraying operation will not be affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 3 It is a partial cross-sectional structural schematic diagram of the utility model;

[0023] Figure 4 It is a structural diagram of the pulling block.

[0024] Description of the numbers in the figure:

[0025] 1. Glue spray hose; 2. Limiting mechanism; 201. First equipment slot; 202. Spring; 203. Cardan ball; 204. First ball slot; 3. Pull block; 4. Elastic strip; 5. Protective cover; 6. Second equipment slot; 7. First connecting rod; 8. Second connecting rod; 9. Push rod; 10. Pressing block; 11. Connecting ring; 12. Groove; 13. Second ball slot. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Example:

[0030] See also Figure 1 and Figure 2 A dust-proof structure for the nozzle of a hot melt glue spraying head includes a glue spraying tube 1, a pulling block 3 is slidably connected to the middle of the outer wall of the glue spraying tube 1, a plurality of elastic strips 4 are fixedly connected to the top of the pulling block 3 at equal intervals, a protective cover 5 is fixedly connected to the top of the elastic strip 4, the bottom of the protective cover 5 is rotatably connected to the top of the outer wall of the glue spraying tube 1, and a limiting mechanism 2 is arranged at the front and rear ends of the inner middle part of the glue spraying tube 1; the protective covers 5 are tightly fitted to each other.

[0031] In this solution, the sliding pulling block 3 drives the protective cover 5 to rotate through the elastic strip 4. The pulling block 3 can control the position of the protective cover 5 and control the opening and closing of the protective cover 5. When closed, the multiple protective covers 5 are in a completely fitted state, which can prevent dust, impurities or other particles from entering the nozzle area, improve the cleanliness of the glue spraying port, and ensure the quality and effect of the next glue spraying.

[0032] See also Figure 3 and Figure 4 The limiting mechanism 2 includes two first device grooves 201, which are respectively opened at the front and rear ends of the spray hose 1, and the inner wall of the first device groove 201 is fixedly connected with a spring 202, and the end of the spring 202 is fixedly connected with a card ball 203, and the front and rear ends of the top wall of the pulling block 3 are both provided with first ball grooves 204, and the card ball 203 and the first ball groove 204 are engaged; a pushing component is arranged at the bottom of the first device groove 201; the pushing component includes two second device grooves 6, and the two second device grooves 6 are respectively opened at the bottom of the first device groove 201, and the bottom wall of the spring 202 is fixedly connected with a first connecting rod 7, and the bottom wall of the first connecting rod 7 is fixedly connected with a second connecting rod 8, and the outer wall of the second connecting rod 8 is fixedly connected with a pushing rod 9, and the outer wall of the pushing rod 9 is fixedly connected with a pressing block 10.

[0033] In this solution, a spring 202 is connected to the inner wall of the first equipment groove 201. When the pulling block 3 is slid, the pulling block 3 causes the blocking ball 203 to move inward through the elastic deformation of the spring 202, so that the pulling block 3 can move on the outer wall of the glue spraying tube 1. At the same time, a first ball groove 204 is opened at the front and rear ends of the top of the pulling block 3, so that the blocking ball 203 and the first ball groove 204 are engaged, thereby limiting the pulling block 3 and fixing the position of the protective cover 5 to prevent it from affecting the glue spraying operation; the protective cover 5 can be quickly closed by setting a pushing component, and the spring 202 can be controlled to move inward by pressing the pressing block 10, thereby achieving the effect of closing the protective cover 5.

[0034] See also Figure 1 and Figure 4 The front and rear ends of the bottom wall of the pulling block 3 are both provided with second ball grooves 13 ; the top of the outer wall of the pulling block 3 is provided with a groove 12 ; and the outer wall of the elastic strip 4 is fixedly connected with a connecting ring 11 .

[0035] In this solution, a second ball groove 13 is provided at the front and rear ends of the bottom wall of the pulling block 3, so that when the protective cover 5 is closed, the pulling block 3 can support the protective cover 5 through the engagement of the second ball groove 13 and the locking ball 203, thereby improving the stability of the device; a groove 12 is provided at the top of the pulling block 3 to facilitate the operator to slide the pulling block 3; the elastic strip 4 is connected by a connecting ring 11, which can improve the overall stability of the device and avoid inconsistent rotation of the protective cover 5 due to reduced elasticity of a certain elastic strip 4.

[0036] Working principle: A pulling block 3 is slidably connected to the outer wall of the glue spraying tube 1, and the protective cover 5 can be controlled to rotate through the elastic strip 4 by sliding the pulling block 3. The elastic strip 4 needs to have a certain memory elasticity, so it needs to be made of a material with good elasticity. Since the bottom end of the protective cover 5 is slidably connected to the outer wall of the glue spraying tube 1, when the pulling block 3 is pulled, the protective cover 5 can be opened or closed, and the first equipment groove 201 is opened at the front and rear ends of the inner wall of the glue spraying tube 1. When the pulling block 3 is slid, the outer wall of the pulling block 3 is squeezed with the card ball 203, and the card The ball 203 moves inward through the elastic deformation of the spring 202, so that the pulling block 3 can drive the protective cover 5 to move. At the same time, a first ball groove 204 is opened at the front and rear ends of the top of the pulling block 3. At this time, the locking ball 203 and the first ball groove 204 are engaged, so as to limit the pulling block 3 and fix the position of the protective cover 5 to prevent affecting the glue spraying operation. When the glue spraying is completed, by pressing the pressing block 10, the spring 202 can be pulled inward by the first connecting rod 7 and the second connecting rod 8, thereby improving the rapidity of closing the protective cover 5.

[0037] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A dust-proof structure for a nozzle of a hot melt adhesive spraying head, comprising a spraying hose (1), characterized in that: A pulling block (3) is slidably connected to the middle of the outer wall of the glue spraying tube (1); a plurality of elastic strips (4) are fixedly connected to the top of the pulling block (3) at equal intervals; a protective cover (5) is fixedly connected to the top of the elastic strip (4); the bottom of the protective cover (5) is rotatably connected to the top of the outer wall of the glue spraying tube (1); and limiting mechanisms (2) are provided at the front and rear ends of the inner middle of the glue spraying tube (1).

2. The dust-proof structure for the nozzle of a hot melt adhesive spraying head according to claim 1, characterized in that: The limiting mechanism (2) comprises two first device grooves (201), the two first device grooves (201) are respectively arranged at the front and rear ends of the spray hose (1), the inner wall of the first device groove (201) is fixedly connected with a spring (202), the end of the spring (202) is fixedly connected with a locking ball (203), the front and rear ends of the top wall of the pulling block (3) are both provided with first ball grooves (204), the locking ball (203) and the first ball groove (204) are engaged; and a pushing component is arranged at the bottom of the first device groove (201).

3. The dust-proof structure for the nozzle of a hot melt adhesive spraying head according to claim 2, characterized in that: The pushing assembly comprises two second device grooves (6), the two second device grooves (6) are respectively opened at the bottom of the first device groove (201), the bottom wall of the spring (202) is fixedly connected to the first connecting rod (7), the bottom wall of the first connecting rod (7) is fixedly connected to the second connecting rod (8), the outer wall of the second connecting rod (8) is fixedly connected to the pushing rod (9), and the outer wall of the pushing rod (9) is fixedly connected to the pressing block (10).

4. The dust-proof structure for the nozzle of a hot melt adhesive spraying head according to claim 1, characterized in that: Second ball grooves (13) are provided at the front and rear ends of the bottom wall of the pulling block (3).

5. The dust-proof structure for the nozzle of a hot melt adhesive spraying head according to claim 1, characterized in that: A groove (12) is provided on the top of the outer wall of the pulling block (3).

6. The dust-proof structure for the nozzle of a hot melt adhesive spraying head according to claim 1, characterized in that: A connecting ring (11) is fixedly connected to the outer wall of the elastic strip (4).

7. The dust-proof structure for the nozzle of a hot melt adhesive spraying head according to claim 1, characterized in that: The protective covers (5) are tightly fitted to each other.

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