Glue-breaking and wire-drawing-preventing assembly of dispensing head

Abstract

The utility model relates to the technical field of automatic dispensing equipment, and discloses a glue-breaking anti-wiredrawing assembly of a dispensing head, which comprises a glue barrel, the bottom end of the glue barrel is fixedly connected with a glue outlet head, an electric heating wire is arranged on the outer side of the glue outlet head, and the left end and the right end of the electric heating wire are fixedly connected with inclined rods. A rotating shaft is rotatably connected to the right side surface of the rubber barrel, a mounting shell is fixedly connected to the left side surface of the rubber barrel, a rotating rod is rotatably connected to the inner wall surface of the left side of the mounting shell, and a driving unit is arranged on the outer side of the rotating rod. According to the utility model, through the cooperation of the inclined rod, the electric heating wire, the rotating shaft, the mounting shell, the rotating rod and the driving unit, a V-shaped structure formed by the inclined rod and the electric heating wire can be driven to perform short-distance reciprocating circulating rotation, the drawn glue is cut off, and the size of the assembly is reduced, so that the electric heating wire can be rotated to the upper part of the glue outlet head; hindrance caused when the dispensing head needs to enter the groove or the crack for dispensing is avoided.

Description

Technical Field

[0001] This utility model relates to the field of automatic dispensing equipment technology, and in particular to a dispensing head anti-fragmentation component for dispensing head. Background Technology

[0002] A dispensing machine is an automated machine specifically designed to control fluids and apply them to the surface or interior of a product. It is mainly used for the precise dispensing, injection, coating, and dripping of adhesives, paints, and other liquids onto precise locations on each product during product manufacturing. In actual dispensing processes, due to environmental factors or solvent temperatures causing variations in the melting state of the adhesive, or blockages in the dispensing syringe orifice, a string of adhesive may appear at the dispensing nozzle when the dispensing syringe is lifted after dispensing. To prevent this stringing from affecting product quality, a glue-cutting component is installed on the outside of the dispensing head to cut off the stringing.

[0003] A search revealed that Chinese Patent Publication No. CN221493114U discloses a high-speed SMT dispensing device, which includes a cutting mechanism and a PCB board. After dispensing, the cutting mechanism can cut the adhesive, solving the problem that existing devices sometimes fail to break the adhesive after dispensing due to its viscosity, resulting in adhesive stringing and the string covering the PCB board. This effectively improves the quality of dispensing.

[0004] In actual use, the glue-cutting component of the aforementioned dispensing head has a relatively large dispensing port volume compared to the smaller dispensing head. When dispensing glue into grooves or gaps, the glue-cutting component occupies a large space. Furthermore, the upper surface of the cutting plate needs to be level with the bottom of the dispensing head, which can obstruct the dispensing head when it needs to enter the groove or gap, affecting the accuracy of dispensing. Therefore, a glue-cutting and anti-stringing component for the dispensing head is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a glue-cutting and anti-stringing component for a dispensing head, which aims to improve the problem that the glue-cutting component in the prior art will cause obstruction when the dispensing head needs to enter the groove or crack to dispense glue.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a glue-breaking and anti-stringing component for a dispensing head, comprising a glue cylinder, a glue outlet head fixedly connected to the bottom end of the glue cylinder, a heating wire disposed on the outer side of the glue outlet head, inclined rods fixedly connected to both ends of the heating wire, a rotating shaft rotatably connected to the right side surface of the glue cylinder, a mounting housing fixedly connected to the left side surface of the glue cylinder, a rotating rod rotatably connected to the left inner wall surface of the mounting housing, a driving unit disposed on the outer side of the rotating rod, the driving unit being used to drive the rotating rod to perform short-distance reciprocating cyclic rotation.

[0007] As a further description of the above technical solution:

[0008] The upper ends of the two inclined rods on the left and right sides of the heating wire are fixedly connected to the bottom surfaces of the rotating rod and the rotating shaft, respectively, and the right end of the rotating rod is fixedly connected to the left surface of the rubber tube.

[0009] As a further description of the above technical solution:

[0010] The drive unit includes a motor, the right output end of which passes through the mounting housing. A drive gear is fixedly connected to the right output end of the motor, a driven gear is fixedly connected to the outside of the rotating rod, and a torsion spring is sleeved on the outside of the rotating rod.

[0011] As a further description of the above technical solution:

[0012] The outer teeth of both the driven gear and the driving gear are one-third the size of a complete gear.

[0013] As a further description of the above technical solution:

[0014] The tooth surface of the driven gear meshes with the tooth surface of the driving gear.

[0015] As a further description of the above technical solution:

[0016] The left end of the torsion spring is fixedly connected to the right side surface of the driven gear, and the right end of the torsion spring is fixedly connected to the right side surface of the rubber tube.

[0017] As a further description of the above technical solution:

[0018] The heating wire is located directly in front of the dispensing head.

[0019] As a further description of the above technical solution:

[0020] An arc-shaped groove is provided on the outer side of the driven gear, and a limiting arc plate is fixed on the left side surface of the rubber tube.

[0021] As a further description of the above technical solution:

[0022] The limiting arc plate is internally rotatably connected to the arc groove.

[0023] As a further description of the above technical solution:

[0024] The outer diameter of the limiting arc plate is the same as the diameter of the non-tooth surface of the driven gear.

[0025] This utility model has the following beneficial effects:

[0026] 1. In this utility model, through the cooperation of the inclined rod, heating wire, rotating shaft, mounting housing, rotating rod and driving unit, the V-shaped structure formed by the inclined rod and heating wire can be driven to reciprocate in a short distance, cutting the colloid wire, reducing the volume of the component, and allowing the heating wire to rotate above the dispensing head, avoiding obstruction when the dispensing head needs to enter the groove or crack for dispensing. At the same time, two cutting operations can be performed in one rotation cycle, improving processing efficiency.

[0027] 2. In this utility model, the reset movement of the driven gear can be limited by the combination of the arc groove and the limiting arc plate, so that the driven gear can be stably reset to the initial position where it can mesh with the driving gear, and stably drive the heating wire to perform a cycle of motion. The structure is simple and the operation is convenient. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the glue-breaking and anti-stringing assembly for a dispensing head proposed in this utility model.

[0029] Figure 2 This is a schematic cross-sectional view of the front part of a dispensing head anti-fragmentation component proposed in this utility model.

[0030] Figure 3 This is a front cross-sectional view of the mounting housing and heating wire of the dispensing head anti-fragmentation assembly proposed in this utility model.

[0031] Figure 4 This is a schematic diagram of the rotating rod, driven gear, torsion spring, and limiting arc plate of a dispensing head anti-fragmentation assembly proposed in this utility model.

[0032] Figure 5 This is a schematic diagram of the rotating rod, driven gear, and torsion spring of a dispensing head anti-fracture assembly for dispensing heads according to this utility model.

[0033] Legend:

[0034] 1. Glue tube; 2. Glue dispensing head; 3. Heating wire; 4. Diagonal rod; 5. Rotating shaft; 6. Mounting housing; 7. Rotating rod; 71. Motor; 72. Drive gear; 73. Driven gear; 74. Torsion spring; 8. Arc groove; 9. Limiting arc plate. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Reference Figure 1 - Figure 2 This utility model provides an embodiment of a glue-breaking and anti-fragmentation assembly for a dispensing head, comprising a glue cylinder 1, with a glue outlet 2 fixedly connected to the bottom end of the glue cylinder 1. The glue cylinder 1 can supply glue to the glue outlet 2 so that the glue outlet 2 can perform glue dispensing operations. An electric heating wire 3 is provided on the outside of the glue outlet 2, located directly in front of the glue outlet 2. The electric heating wire 3 is in a taut state and can generate heat when energized. Both ends of the electric heating wire 3 are fixedly connected to inclined rods 4, which form a complete unit with the electric heating wire 3. When the inclined rods 4 rotate, they can drive the electric heating wire 3 to rotate synchronously. The inclined rods 4 have a hollow internal structure, which can be used to connect wires to the electric heating wire 3 so that the electric heating wire 3 can be energized and converted into heat energy. A rotating shaft 5 is rotatably connected to the right side surface of the glue cylinder 1.

[0037] Reference Figure 2 - Figure 4 A mounting housing 6 is fixedly connected to the left side surface of the glue tube 1. A rotating rod 7 is rotatably connected to the left inner wall surface of the mounting housing 6. The right end of the rotating rod 7 is fixedly connected to the left side surface of the glue tube 1, so that the rotating rod 7 can be rotated more stably. The upper ends of the two inclined rods 4 on the left and right sides of the heating wire 3 are fixedly connected to the bottom surfaces of the rotating rod 7 and the rotating shaft 5, respectively. The whole consisting of the inclined rod 4 and the heating wire 3 can be rotatably connected to the glue tube 1 through the rotating rod 7 and the rotating shaft 5.

[0038] A drive unit is provided on the outer side of the rotating rod 7. The drive unit includes a motor 71. The right output end of the motor 71 passes through the mounting housing 6. A drive gear 72 is fixedly connected to the right output end of the motor 71. When the motor 71 starts, it can drive the drive gear 72 to rotate. A driven gear 73 is fixedly connected to the outer side of the rotating rod 7. When the driven gear 73 rotates, it can drive the rotating rod 7 to rotate synchronously. The teeth on the outer sides of both the driven gear 73 and the drive gear 72 are one-third the size of a complete gear. The tooth surface of the driven gear 73 meshes with the tooth surface of the drive gear 72. When the drive gear 72 rotates, it can drive the rod 7 to rotate synchronously. The driven gear 73 rotates synchronously. When the driven gear 73 rotates more than one-third of a turn, it will disengage from the driving gear 72. A torsion spring 74 is sleeved on the outside of the rotating rod 7. The left end of the torsion spring 74 is fixedly connected to the right side surface of the driven gear 73, and the right end of the torsion spring 74 is fixedly connected to the right side surface of the rubber sleeve 1. When the driven gear 73 rotates, it will drive the torsion spring 74 to rotate and generate torque. When the driven gear 73 disengages from the driving gear 72, the driven gear 73 will reverse and reset under the torque of the torsion spring 74, so that the driven gear 73 returns to its initial position.

[0039] Reference Figure 4- Figure 5 An arc-shaped groove 8 is provided on the outer side of the driven gear 73. A limiting arc plate 9 is fixed on the left side surface of the rubber sleeve 1. The limiting arc plate 9 is rotatably connected to the inside of the arc-shaped groove 8. The outer diameter of the limiting arc plate 9 is the same as the diameter of the non-tooth surface of the driven gear 73, which can prevent the limiting arc plate 9 from obstructing the rotation of the driving gear 72. At the same time, the arc length of the limiting arc plate 9 is less than the arc length of the arc-shaped groove 8, which can ensure that it will not obstruct the driven gear 73 when it rotates one-third of a turn. In addition, the limiting arc plate 9 can limit the driven gear 73, so that... When in normal use, the torsion spring 74 can be slightly twisted to generate a certain torque. At the same time, the limiting arc plate 9 limits the driven gear 73 to overcome the torque of the torsion spring 74. When the driving gear 72 disengages from the driven gear 73 and resets under the torque of the torsion spring 74, the limiting arc plate 9 can limit the driven gear 73, so that the driven gear 73 can be stably maintained in the initial position where it can mesh with the driving gear 72, ensuring that the driving gear 72 can resume meshing with the driven gear 73 when it rotates to the next revolution.

[0040] Working principle: The inclined rod 4 and the heating wire 3 form a V-shaped structure. Initially, the inclined rod 4 and the heating wire 3 are tilted, so that the heating wire 3 is higher than the bottom of the dispensing head 2, which avoids obstructing the dispensing operation of the dispensing head 2. After the dispensing head 2 moves down to complete the dispensing and resets, the motor 71 can be started to drive the drive gear 72 to rotate, which in turn drives the driven gear 73 to rotate. After rotating one-third of a turn, the motor 71 stops. At this time, the drive gear 72 and the driven gear 73 remain meshed. At the same time, the inclined rod 4 and the heating wire 3 rotate one-third of a turn to the rear to a position symmetrical to the initial position. During the process, the heating wire 3 generates heat when energized, which allows the glue thread to melt quickly, facilitating glue cutting and preventing stringing. When the dispensing head 2 completes the next dispensing and moves upward to reset, the motor 71 continues to start and drive the drive gear 72 to rotate, which allows the drive gear 72 to disengage from the driven gear 73. At this time, the driven gear 73 will quickly reset to its initial position under the torque of the torsion spring 74 and the limit arc plate 9, which will then drive the inclined rod 4 and the heating wire 3 to reset to the front initial position. During this process, the glue thread can be cut again, so that the component can perform two glue cutting operations in one rotation reset process, improving processing efficiency.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dispensing head anti-fragmentation assembly, comprising a dispensing cartridge (1), characterized in that: The bottom end of the glue cylinder (1) is fixedly connected to a glue outlet (2). A heating wire (3) is provided on the outside of the glue outlet (2). An inclined rod (4) is fixedly connected to both the left and right ends of the heating wire (3). A rotating shaft (5) is rotatably connected to the right side surface of the glue cylinder (1). A mounting housing (6) is fixedly connected to the left side surface of the glue cylinder (1). A rotating rod (7) is rotatably connected to the left inner wall surface of the mounting housing (6). A driving unit is provided on the outside of the rotating rod (7). The driving unit is used to drive the rotating rod (7) to perform short-distance reciprocating cyclic rotation.

2. The anti-fragmentation assembly for a dispensing head according to claim 1, characterized in that: The upper ends of the two inclined rods (4) on the left and right sides of the heating wire (3) are fixedly connected to the bottom surfaces of the rotating rod (7) and the rotating shaft (5), respectively, and the right end of the rotating rod (7) is fixedly connected to the left side surface of the rubber tube (1).

3. The anti-fragmentation assembly for a dispensing head according to claim 1, characterized in that: The drive unit includes a motor (71), the right output end of the motor (71) passes through the mounting housing (6), the right output end of the motor (71) is fixedly connected to a drive gear (72), the outer side of the rotating rod (7) is fixedly connected to a driven gear (73), and a torsion spring (74) is sleeved on the outer side of the rotating rod (7).

4. The anti-fragmentation assembly for a dispensing head according to claim 3, characterized in that: The outer teeth of both the driven gear (73) and the driving gear (72) are one-third of the size of a complete gear.

5. The anti-fragmentation assembly for a dispensing head according to claim 3, characterized in that: The tooth surface of the driven gear (73) meshes with the tooth surface of the driving gear (72).

6. The anti-fragmentation assembly for a dispensing head according to claim 3, characterized in that: The left end of the torsion spring (74) is fixedly connected to the right side surface of the driven gear (73), and the right end of the torsion spring (74) is fixedly connected to the right side surface of the rubber sleeve (1).

7. The anti-fragmentation assembly for a dispensing head according to claim 1, characterized in that: The heating wire (3) is located directly in front of the dispensing head (2).

8. The anti-fragmentation assembly for a dispensing head according to claim 3, characterized in that: An arc-shaped groove (8) is provided on the outer side of the driven gear (73), and a limiting arc plate (9) is fixed on the left side surface of the rubber tube (1).

9. The anti-fragmentation assembly for a dispensing head according to claim 8, characterized in that: The limiting arc plate (9) is rotatably connected to the inside of the arc groove (8).

10. The anti-fragmentation assembly for a dispensing head according to claim 8, characterized in that: The outer wall diameter of the limiting arc plate (9) is the same as the non-tooth surface diameter of the driven gear (73).

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