Anti-blocking Luer head glass injector

Abstract

The utility model relates to the technical field of industrial dispensing, in particular to an anti-blocking Luer head glass injector which comprises an injection tube, a fixed disc which is arranged in the injection tube and is tightly attached to the inner wall of the injection tube, a piston which is tightly attached to the inner wall of the injection tube is fixed at the bottom end of the fixed disc, and a piston rod is coaxially fixed on the top surface of the fixed disc. The glue outlet pipe can be heated by arranging the limiting ring, the heating cylinder and a plurality of heating rods, so that hot melt glue passing through the glue outlet pipe can be heated, the hot melt glue is prevented from being solidified in the conveying process, the blocking condition during glue dispensing is further prevented, and the glue dispensing efficiency is improved. The limiting ring, the heating cylinder and the heating rods can be limited by arranging the two limiting mechanisms, so that the limiting ring, the heating cylinder and the heating rods can be conveniently installed, the heating rods can be conveniently detached, overhauled or replaced, and the practicability of the whole injector is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial glue dispensing, in particular to an anti-clogging Luer head glass syringe. Background Art

[0002] In the process of industrial production, workers are often required to perform glue dispensing on the workpieces. The glue used in the dispensing process is often hot melt glue. A Luer head glass syringe is required to perform the dispensing work. However, some Luer head glass syringes on the market have a relatively simple structure, and there is no structure for heating the glue outlet tube of the syringe, so the hot melt glue entering the glue outlet tube cannot be heated. The hot melt glue may solidify during the extrusion process, which may cause the glue outlet tube and the Luer head to be blocked, thereby affecting the normal use of the entire syringe. Utility Model Content

[0003] The utility model aims to provide a blockage-resistant Luer head glass syringe to solve the problem raised in the above-mentioned background technology that some Luer head glass syringes on the market have a relatively simple structure and are not provided with a structure for heating the glue outlet pipe of the syringe, so that the hot melt adhesive entering the glue outlet pipe cannot be heated, and the hot melt adhesive may solidify during the extrusion process, which may cause blockage of the glue outlet pipe and the Luer head, thereby affecting the normal use of the entire syringe.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The anti-clogging Luer head glass syringe comprises an injection tube, a fixed disk tightly fitting the inner wall of the injection tube is provided inside the injection tube, a piston tightly fitting the inner wall of the injection tube is fixed at the bottom end of the fixed disk, a piston rod is coaxially fixed on the top surface of the fixed disk, a rubber outlet tube connected to the inner cavity of the injection tube is fixed at the bottom end of the injection tube, a Luer head threadedly connected to the rubber outlet tube is provided below the injection tube, a limiting ring and a heating cylinder fixed to the limiting ring by a plurality of fixing columns are slidingly sleeved on the outer wall of the rubber outlet tube, a plurality of heating rods for heating the rubber outlet tube are embedded on the inner wall of the heating cylinder, and further comprises:

[0006] Two limiting mechanisms are arranged on the circumferential outer wall of the limiting ring and are used to limit the heating cylinder and several heating rods. The limiting mechanism includes an L-shaped guide plate fixed on the circumferential outer wall of the limiting ring, a contact piece fixed on the vertical plate end of the guide plate close to the surface of one side of the limiting ring, a spring with one end fixed to the contact piece close to the surface of one side of the limiting ring, a movable plate fixed to the other end of the spring, a connecting block fixed on the top surface of the movable plate and slidably connected to the horizontal plate end of the guide plate, a pull rod fixed on the front surface of the movable plate, and a limiting rod slidably plugged into the rubber outlet hose is fixed to the surface of one side of the movable plate close to the limiting ring.

[0007] As a preferred embodiment, two limiting holes are provided on the circumferential outer wall of the rubber outlet pipe, and the limiting rod is slidably plugged into the limiting holes on the same side of the circumferential outer wall of the rubber outlet pipe.

[0008] As a preferred embodiment, a guide groove is provided on the bottom surface of the guide plate transverse plate end, and a guide block slidably connected to the guide groove on the bottom surface of the guide plate transverse plate end is fixed on the top surface of the connecting block.

[0009] As a preferred embodiment, the plurality of heating rods on the inner wall of the heating cylinder are distributed in a circular shape with equal spacing, and the outer wall of the heating rod close to the rubber outlet pipe is tightly fitted with the circumferential outer wall of the rubber outlet pipe.

[0010] As a preferred embodiment, two symmetrical handles are fixed on the circumferential outer wall of the limiting ring, and the handles are U-shaped.

[0011] As a preferred embodiment, a fixed sleeve on the outer wall of the injection tube is provided with an anti-scalding sleeve that matches its size, and the thickness of the anti-scalding sleeve is 3-7 mm.

[0012] As a preferred embodiment, a cover plate slidably connected to the top surface of the injection tube is provided, a limit groove is provided on the top surface of the cover plate, the piston rod is slidably connected to the limit groove on the top surface of the cover plate, and a push-pull plate located above the cover plate is coaxially fixed on the top surface of the piston rod.

[0013] As a preferred embodiment, the longitudinal section of the guide groove on the bottom surface of the guide plate transverse plate end is I-shaped, and the shape of the guide block is I-shaped to match the shape of the guide groove on the bottom surface of the guide plate transverse plate end.

[0014] As a preferred embodiment, a plurality of slots are provided on the top surface of the injection tube, and a plurality of inserting strips which are slidably plugged into the slots on the same side of the top surface of the injection tube are fixed to the bottom end of the cover plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model can heat the glue outlet pipe by arranging a limit ring, a heating cylinder and a plurality of heating rods, so as to heat the hot melt adhesive passing through the glue outlet pipe, thereby preventing the hot melt adhesive from solidifying during the transportation process, and further preventing the blockage during the dispensing. By arranging two limit mechanisms, the limit ring, the heating cylinder and a plurality of heating rods can be limited, so that the limit ring, the heating cylinder and a plurality of heating rods can be installed easily, and the plurality of heating rods can also be disassembled, repaired or replaced, so that the practicality of the entire syringe is stronger;

[0017] 2. In the utility model, a guide groove is provided on the bottom surface of the horizontal plate end of the guide plate, and a guide block slidably connected to the guide groove on the bottom surface of the horizontal plate end of the guide plate is fixed on the top surface of the connecting block, which can guide the movement of the connecting block and indirectly guide the movement of the limit rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0020] Figure 3 It is an enlarged view of point A in the utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the anti-scalding cover in the utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the injection tube in the utility model;

[0023] Figure 6 The local explosion in the utility model Figure 1 ;

[0024] Figure 7 The local explosion in the utility model Figure 2 ;

[0025] Figure 8 It is a schematic diagram of a local structure in the utility model;

[0026] Fig. 9 It is a partial cross-sectional view of the utility model;

[0027] Fig.10 It is a schematic diagram of the overall structure of the limiting mechanism in the utility model;

[0028] Fig.11 It is a partial exploded view of the limiting mechanism in the utility model.

[0029] The meaning of each number in the figure is:

[0030] 1. Injection tube; 2. Anti-scalding sleeve; 3. Glue discharge hose; 4. Luer head; 5. Limiting ring; 6. Heating tube; 7. Limiting mechanism; 71. Guide plate; 72. Contact piece; 73. Spring; 74. Moving plate; 75. Pull rod; 76. Limiting rod; 77. Connecting block; 78. Guide block; 8. Fixed column; 9. Handle; 10. Heating rod; 11. Cover plate; 12. Piston rod; 13. Push-pull plate; 14. Fixed plate; 15. Piston; 16. Insert strip. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] See also Figure 1-Figure 11 The utility model provides a technical solution: an anti-clogging Luer head glass syringe, comprising an injection tube 1, a fixed disk 14 tightly fitted with the inner wall of the injection tube 1 is provided inside the injection tube 1, a piston 15 tightly fitted with the inner wall of the injection tube 1 is fixed at the bottom end of the fixed disk 14, a piston rod 12 is coaxially fixed on the top surface of the fixed disk 14, a rubber outlet tube 3 connected with the inner cavity of the injection tube 1 is fixed at the bottom end of the injection tube 1, a Luer head 4 threadedly connected with the rubber outlet tube 3 is provided below the injection tube 1, a limiting ring 5 and a heating cylinder 6 fixed to the limiting ring 5 by a plurality of fixing columns 8 are slidingly sleeved on the outer wall of the rubber outlet tube 3, a plurality of heating rods 10 for heating the rubber outlet tube 3 are embedded on the inner wall of the heating cylinder 6, and also include:

[0033] Two limiting mechanisms 7 are arranged on the circumferential outer wall of the limiting ring 5, and are used to limit the heating tube 6 and a plurality of heating rods 10. The limiting mechanism 7 includes an L-shaped guide plate 71 fixed on the circumferential outer wall of the limiting ring 5, a contact piece 72 fixed to the vertical plate end of the guide plate 71 close to the surface of one side of the limiting ring 5, a spring 73 with one end fixed to the contact piece 72 close to the surface of one side of the limiting ring 5, a moving plate 74 fixed to the other end of the spring 73, a connecting block 77 fixed to the top surface of the moving plate 74 and slidably connected to the horizontal plate end of the guide plate 71, and a pull rod 75 fixed to the front surface of the moving plate 74. A limiting rod 76 is fixed on the surface and is slidably plugged into the glue outlet pipe 3. The limiting ring 5, the heating cylinder 6 and several heating rods 10 are provided so that the glue outlet pipe 3 can be heated, so that the hot melt adhesive passing through the glue outlet pipe 3 can be heated to prevent the hot melt adhesive from solidifying during the transportation process, thereby preventing blockage during dispensing. The limiting ring 5, the heating cylinder 6 and several heating rods 10 can be limited by providing two limiting mechanisms 7, so that the limiting ring 5, the heating cylinder 6 and several heating rods 10 are easy to install, and the several heating rods 10 are also easy to disassemble, repair or replace, making the entire syringe more practical.

[0034] In this embodiment, two limiting holes are provided on the circumferential outer wall of the rubber outlet pipe 3, and the limiting rods 76 are slidably connected with the limiting holes on the same side of the circumferential outer wall of the rubber outlet pipe 3, so that the two limiting rods 76 can be smoothly slidably connected with the rubber outlet pipe 3.

[0035] In addition, a guide groove is provided on the bottom surface of the transverse plate end of the guide plate 71, and a guide block 78 is fixed on the top surface of the connecting block 77, which is slidably connected to the guide groove on the bottom surface of the transverse plate end of the guide plate 71, and can guide the movement of the connecting block 77, and then indirectly guide the movement of the limit rod 76.

[0036] Furthermore, the plurality of heating rods 10 on the inner wall of the heating tube 6 are distributed in a circular shape with equal spacing, and the outer wall of the heating rod 10 close to the rubber outlet pipe 3 is tightly fitted with the circumferential outer wall of the rubber outlet pipe 3, so that the plurality of heating rods 10 can smoothly heat the rubber outlet pipe 3, and the heating of the plurality of heating rods 10 can be made more uniform.

[0037] Furthermore, two symmetrical handles 9 are fixed on the circumferential outer wall of the limiting ring 5 , and the handles 9 are in a U-shape, so as to facilitate the movement of the limiting ring 5 .

[0038] Specifically, an anti-scalding sleeve 2 matching its size is fixedly provided on the outer wall of the injection tube 1, and the thickness of the anti-scalding sleeve 2 is 3-7 mm. It should be added that the injection tube 1 and the glue outlet tube 3 are both made of glass material, and the preferred thickness in this article is 4 mm, so as to prevent the injection tube 1 filled with hot melt adhesive from scalding the user.

[0039] More specifically, a cover plate 11 slidably connected thereto is provided on the top surface of the injection tube 1, a limit groove is provided on the top surface of the cover plate 11, the piston rod 12 is slidably connected to the limit groove on the top surface of the cover plate 11, and a push-pull plate 13 located above the cover plate 11 is coaxially fixed on the top surface of the piston rod 12, which can guide the movement of the piston rod 12, the fixed plate 14 and the piston 15, so that the piston 15 is more stable during the movement.

[0040] It is worth noting that the longitudinal cross-sectional shape of the guide groove on the bottom surface of the transverse plate end of the guide plate 71 is I-shaped, and the shape of the guide block 78 is I-shaped to match the shape of the guide groove on the bottom surface of the transverse plate end of the guide plate 71, which can make the connection between the guide block 78 and the guide groove on the bottom surface of the transverse plate end of the guide plate 71 on the same side tighter, thereby indirectly making the limit rod 76 more stable during movement.

[0041] It is worth noting that a plurality of slots are provided on the top surface of the injection tube 1, and a plurality of inserting strips 16 are fixed at the bottom end of the cover plate 11 for slidingly plugging into the slots on the same side of the top surface of the injection tube 1, so as to guide the disassembly and assembly of the cover plate 11.

[0042] Among them, the Luer head 4 and the heating rod 10 involved in this embodiment are prior arts, and their structures and working principles are well known to those skilled in the art, and are not described in detail here.

[0043] When the glue dispensing work is needed in the specific use of this embodiment, the two movable plates 74 are first pulled by the two pull rods 75 to make the two movable plates 74 move in the direction away from the limit ring 5. The movable plates 74 move under the guidance of the connecting block 77, the guide block 78 and the guide groove on the bottom surface of the cross plate end of the guide plate 71 on the same side. The movement of the movable plate 74 causes the spring 73 fixed thereto to be compressed. The movement of the movable plate 74 also drives the limit rod 76 fixed thereto to move. When the two limit rods 76 move to the appropriate position, the two pull rods 75 are stopped, and then the two pull rods 75 are pulled. The handle 9 sets the heating tube 6 and the limiting ring 5 on the outer wall of the rubber outlet pipe 3, and rotates the limiting ring 5 at the same time, so that the positions of the two limiting rods 76 correspond to the positions of the two limiting holes on the outer wall of the rubber outlet pipe 3 respectively, and then slowly loosens the two springs 73. The spring 73 drives the movable plate 74 fixed thereto to move toward the direction of the rubber outlet pipe 3 in the process of restoring its original length. The movement of the movable plate 74 drives the limiting rod 76 fixed thereto to move, until the two limiting rods 76 are slidably plugged into the limiting holes on the same side of the outer wall of the rubber outlet pipe 3, and the installation of several heating rods 10 is completed;

[0044] Then, the Luer head 4 is threadedly connected with the glue outlet tube 3, and then several heating rods 10 are started through the external PLC and a proper amount of hot melt adhesive is added into the injection tube 1, the fixed disk 14 and the piston 15 are placed into the injection tube 1, and several inserts 16 are respectively inserted into several slots on the top surface of the injection tube 1. At the same time, after several heating rods 10 are started, the glue outlet tube 3 can be heated, and then the piston rod 12 can be driven to move by pushing the push-pull plate 13. The movement of the piston rod 12 drives the fixed disk 14 and the piston 15 to move. The movement of the piston 15 can squeeze the hot melt adhesive in the injection tube 1. The hot melt adhesive in the injection tube 1 is heated after entering the glue outlet tube 3, so as to prevent the hot melt adhesive from solidifying and causing blockage. The hot melt adhesive entering the glue outlet tube 3 then enters the Luer head 4, and the hot melt adhesive entering the Luer head 4 is then squeezed out;

[0045] On the contrary, the limiting ring 5, the heating tube 6, the plurality of fixing columns 8 and the plurality of heating rods 10 can be disassembled, thereby facilitating the disassembly, maintenance or replacement of the plurality of heating rods 10.

[0046] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A Luer-tip glass syringe with an anti-clogging function, comprising an injection tube (1), characterized in that: The injection tube (1) is provided with a fixed disk (14) which is tightly fitted with the inner wall thereof, a piston (15) which is tightly fitted with the inner wall of the injection tube (1) is fixed at the bottom end of the fixed disk (14), a piston rod (12) is coaxially fixed on the top surface of the fixed disk (14), a rubber outlet tube (3) which is connected with the inner cavity thereof is fixed at the bottom end of the injection tube (1), a Luer head (4) which is threadedly connected with the rubber outlet tube (3) is provided below the injection tube (1), a limiting ring (5) and a heating tube (6) which is fixed to the limiting ring (5) by a plurality of fixing columns (8) are slidingly sleeved on the outer wall of the rubber outlet tube (3), a plurality of heating rods (10) which are used to heat the rubber outlet tube (3) are embedded on the inner wall of the heating tube (6), and the invention also includes: Two limiting mechanisms (7) are arranged on the circumferential outer wall of the limiting ring (5) and are used to limit the heating cylinder (6) and a plurality of heating rods (10). The limiting mechanism (7) comprises an L-shaped guide plate (71) fixed on the circumferential outer wall of the limiting ring (5), a contact piece (72) fixed on the surface of one side of the vertical plate end of the guide plate (71) close to the limiting ring (5), a spring (73) with one end fixed to the surface of one side of the contact piece (72) close to the limiting ring (5), a moving plate (74) fixed to the other end of the spring (73), a connecting block (77) fixed to the top surface of the moving plate (74) and slidably connected to the horizontal plate end of the guide plate (71), a pull rod (75) fixed to the front surface of the moving plate (74), and a limiting rod (76) slidably plugged with the rubber outlet hose (3) is fixed to the surface of one side of the moving plate (74) close to the limiting ring (5).

2. The anti-clogging Luer-tip glass syringe according to claim 1, characterized in that: Two limiting holes are provided on the circumferential outer wall of the rubber outlet pipe (3), and the limiting rod (76) is slidably plugged into the limiting holes on the same side of the circumferential outer wall of the rubber outlet pipe (3).

3. The anti-clogging Luer-tip glass syringe according to claim 1, characterized in that: A guide groove is provided on the bottom surface of the transverse plate end of the guide plate (71), and a guide block (78) is fixed on the top surface of the connecting block (77) and is slidably connected to the guide groove on the bottom surface of the transverse plate end of the guide plate (71).

4. The anti-clogging Luer-tip glass syringe according to claim 1, characterized in that: The plurality of heating rods (10) on the inner wall of the heating cylinder (6) are distributed in a circular shape with equal spacing, and the outer wall of one side of the heating rod (10) close to the rubber outlet pipe (3) is tightly fitted with the circumferential outer wall of the rubber outlet pipe (3).

5. The anti-clogging Luer tip glass syringe according to claim 1, characterized in that: Two mutually symmetrical handles (9) are fixed on the circumferential outer wall of the limiting ring (5), and the handles (9) are in a U-shape.

6. The anti-clogging Luer tip glass syringe according to claim 1, characterized in that: The outer wall of the injection tube (1) is fixedly sleeved with an anti-scalding sleeve (2) that matches its size, and the thickness of the anti-scalding sleeve (2) is 3-7 mm.

7. The anti-clogging Luer tip glass syringe according to claim 1, characterized in that: The top surface of the injection tube (1) is provided with a cover plate (11) which is slidably plugged therewith, the top surface of the cover plate (11) is provided with a limit groove, the piston rod (12) is slidably plugged with the limit groove on the top surface of the cover plate (11), and a push-pull plate (13) located above the cover plate (11) is coaxially fixed on the top surface of the piston rod (12).

8. The anti-clogging Luer-tip glass syringe according to claim 3, characterized in that: The longitudinal section of the guide groove on the bottom surface of the transverse plate end of the guide plate (71) is in the shape of an I-beam, and the shape of the guide block (78) is in the shape of an I-beam that matches the shape of the guide groove on the bottom surface of the transverse plate end of the guide plate (71).

9. The anti-clogging Luer tip glass syringe according to claim 7, characterized in that: The top surface of the injection tube (1) is provided with a plurality of slots, and the bottom end of the cover plate (11) is fixed with a plurality of inserting strips (16) which are slidably inserted into the slots on the same side of the top surface of the injection tube (1).

Images