Quick-release dispensing head of die bonder

Abstract

The utility model discloses a quick release type dispensing head of a die bonder, which belongs to the field of die bonders, and comprises a glue cylinder and a needle head fixedly mounted at the outlet end of the glue cylinder, a heating cylinder is sleeved outside the glue cylinder, a taper sleeve in threaded connection with the heating cylinder is sleeved outside the needle head, and the heating cylinder is sleeved outside the taper sleeve. The heating cylinder and the taper sleeve are sleeved with a sleeve and a lock cover in threaded connection with the sleeve, and the inlet end of the rubber cylinder is covered with a sealing cover pressed by the lock cover. According to the quick-disassembly type dispensing head of the die bonder, the sleeve is matched with the lock cover to compress, maintain stability and seal the internal structure, in the dispensing process, heating can be conducted through the heating cylinder, the liquid state of glue is maintained, blocking caused by wall hanging can be prevented, the heating cylinder is kept in the heating state during cleaning, then hot water replaces the glue to be injected through the glue injection hole, and the glue is not prone to being damaged. Glue left in the glue cylinder and the needle head can be smoothly washed away, and the trouble of frequent disassembly and cleaning is avoided.

Description

Technical Field

[0001] The utility model relates to the field of chip bonding machines, in particular to a quick-detachable glue dispensing head for a chip bonding machine. Background Art

[0002] Die bonder is a semiconductor packaging equipment, mainly used to connect semiconductor chips and pins on PCB boards. It aligns the PCB coated with solder paste with the packaged semiconductor chip, and then uses heat and pressure to bond them together.

[0003] A Chinese utility model patent with publication number CN208661562U discloses a detachable and replaceable dispensing head for a dispensing and bonding machine, comprising a glue bottle, a connecting nut, a connecting rod and a needle; the connecting rod is arranged in the glue bottle; the needle is detachably connected to the glue bottle through the connecting nut; the connecting rod is a hollow structure, and its hollow structure axially penetrates the entire glue bottle and is the same as the inner cavity of the needle.

[0004] The dispensing head of the above-mentioned dispensing and bonding machine is disassembled through the glue bottle nut, so that the needle can be replaced, thereby reducing the difficulty of cleaning. However, the fundamental reason why the dispensing head is easily blocked is that the glue is easy to cool and solidify and adhere to the inner walls of the needle, syringe and other parts. The disassembly and cleaning method increases the workload of the staff and affects the efficiency of dispensing.

[0005] Therefore, a quick-release glue dispensing head for a die bonding machine is provided to solve the above problems. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] The utility model provides a quick-detachable dispensing head for a film bonding machine, aiming to solve the problems in the background technology that the dispensing head for the existing dispensing film bonding machine is easily affected in the work intensity of the staff and the dispensing work efficiency by adopting the disassembly and cleaning method.

[0008] (II) Technical solution

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a quick-release glue dispensing head for a film bonding machine, comprising a glue cylinder and a needle fixedly installed at the outlet end of the glue cylinder.

[0010] In order to prevent the dispensing head from being clogged by cooled glue during work breaks, the outside of the glue cylinder is covered with a heating cylinder, the outside of the needle is covered with a conical sleeve threadedly connected to the heating cylinder, the outside of the heating cylinder and the conical sleeve are covered with a sleeve and a locking cover threadedly connected to the sleeve, and the inlet end of the glue cylinder is covered with a sealing cover pressed by the locking cover.

[0011] Preferably, in order to facilitate glue injection, the sealing cover is provided with a glue injection hole along the axis.

[0012] Preferably, in order to prevent glue from leaking sideways, sealing rings are provided at the sealing cover and the inlet end of the glue cylinder.

[0013] Preferably, in order to facilitate the connection of the heating tube to electricity, a wiring hole is provided on the sleeve corresponding to the wiring location of the heating tube.

[0014] Preferably, in order for the sleeve to hold the cone sleeve, so that the internal parts can be compressed by the locking cover and the sleeve, the inner diameter of the outlet end of the sleeve is smaller than the diameter of the cone sleeve.

[0015] Preferably, in order to compress the heating tube simultaneously when the locking cover compresses the rubber tube, the diameter of the flange at the inlet end of the rubber tube is larger than the inner diameter of the inlet end of the heating tube.

[0016] Preferably, in order to facilitate the locking cover to press the sealing cover and the rubber cylinder through the sealing cover, a through hole for accommodating the sealing cover to pass through is opened at the end of the locking cover away from the rubber cylinder, and a limiting ring is fixedly connected to the end of the sealing cover close to the rubber cylinder, and the diameter of the limiting ring is larger than the diameter of the through hole and equal to the diameter of the flange at the inlet end of the rubber cylinder.

[0017] (III) Beneficial effects

[0018] The quick-release glue dispensing head of the bonding machine uses a sleeve and a locking cover to compress the internal structure to maintain stability and sealing. During the dispensing process, the heating cylinder can be used for heating to maintain the glue in a liquid state, which can prevent wall obstruction. When cleaning, keep the heating cylinder heated, and then inject hot water instead of glue through the glue injection hole to smoothly flush out the glue remaining in the glue cylinder and needle, eliminating the trouble of frequent disassembly and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a quick-release glue dispensing head for a die-bonding machine;

[0020] Figure 2 It is a schematic diagram of the exploded three-dimensional structure of a quick-release dispensing head of a die-bonding machine;

[0021] Figure 3 for Figure 2 Schematic diagram of the structure enlarged at point A in the middle.

[0022] In the figure:

[0023] 1. Rubber cylinder; 11. Needle; 2. Heating cylinder; 21. Cone sleeve; 3. Sleeve; 31. Locking cover; 311. Through hole; 32. Wiring hole; 4. Sealing cover; 41. Glue injection hole; 42. Limiting ring; 5. Sealing ring. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1 , Figure 2 and Figure 3 The utility model provides a technical solution: a quick-detachable film bonding machine dispensing head, comprising a glue cylinder 1 and a needle head 11 fixedly installed at the outlet end of the glue cylinder 1, the outer part of the glue cylinder 1 is sleeved with a heating cylinder 2, the outer part of the needle head 11 is sleeved with a cone sleeve 21 screwed with the heating cylinder 2, the outer part of the heating cylinder 2 and the cone sleeve 21 is sleeved with a sleeve 3 and a locking cover 31 screwed with the sleeve 3, the inlet end of the glue cylinder 1 is covered with a sealing cover 4 pressed by the locking cover 31, wherein the sealing cover 4 is provided with a glue injection hole 41 along the axis, the inner diameter of the outlet end of the sleeve 3 is smaller than the diameter of the cone sleeve 21, the diameter of the flange at the inlet end of the glue cylinder 1 is larger than the inner diameter of the inlet end of the heating cylinder 2, the end of the locking cover 31 away from the glue cylinder 1 is provided with a through hole 311 for accommodating the sealing cover 4 to pass through, and the end of the sealing cover 4 close to the glue cylinder 1 is fixedly connected to a limiting ring 42, the diameter of the limiting ring 42 is larger than the diameter of the through hole 311 and equal to the diameter of the flange at the inlet end of the glue cylinder 1.

[0026] When in use, the needle 11 is installed on the outlet end of the rubber cylinder 1, the cone sleeve 21 is screwed to the heating cylinder 2, and then the rubber cylinder 1 and the needle 11 are placed into the heating cylinder 2 from the top of the heating cylinder 2 as a whole, and the needle 11 is passed out from the bottom of the cone sleeve 21, and then the assembled part is placed into the sleeve 3 from the top, and part of the cone sleeve 21 and the needle 11 are passed out from the bottom, and then the sealing cover 4 is covered on the inlet end of the rubber cylinder 1 so that the limiting ring 42 covers the flange of the inlet end of the rubber cylinder 1, and finally the locking cover 31 is covered with the sealing cover 4 through the through hole 311 and finally screwed on the sleeve 3, so that the sealing cover 4 is pressed by the locking cover 31, and then the rubber cylinder 1 is pressed by the sealing cover 4, and then the heating cylinder 2 is pressed by the flange of the rubber cylinder 1, and because the sleeve 3 The inner diameter of the outlet end is smaller than the outer diameter of the cone sleeve 21, so that the sleeve 3 cooperates with the locking cover 31 to compress the internal structure to maintain stability and sealing. Finally, the whole is installed on the bonding machine to work. During the dispensing process, it can be heated by the heating cylinder 2 to maintain the liquid state of the glue, which can prevent the wall from forming blockage; when cleaning, keep the heating cylinder 2 in a heated state, and then inject hot water instead of glue through the glue injection hole 41, so that the glue remaining in the glue cylinder 1 and the needle 11 can be smoothly flushed clean, eliminating the trouble of frequent disassembly and cleaning; when replacement and disassembly are required, just unscrew the locking cover 31 to take out the glue cylinder 1, needle 11, heating cylinder 2 and cone sleeve 21 in the sleeve 3 in order, and then they can be maintained or replaced.

[0027] Furthermore, sealing rings 5 ​​are provided at the inlet ends of the sealing cover 4 and the rubber tube 1; when the sealing cover 4 is pressed, the sealing ring 5 seals the sealing cover 4 and the rubber tube 1 to better ensure the sealing performance.

[0028] It should be noted that the heating tube 2 has a spirally distributed heating wire and a power terminal fixedly connected to the heating wire, and a wiring hole 32 is provided on the sleeve 3 at the terminal corresponding to the heating tube 2; the wiring of the heating tube 2 is led out through the wiring hole 32 and connected to an external power supply, thereby supplying power to the heating wire, facilitating heating of the heating tube 2.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A quick-release glue dispensing head for a film bonding machine, comprising a glue cartridge (1) and a needle (11) fixedly mounted at the outlet end of the glue cartridge (1), characterized in that: The outside of the rubber cylinder (1) is covered with a heating cylinder (2), the outside of the needle (11) is covered with a cone sleeve (21) threadedly connected to the heating cylinder (2), the outside of the heating cylinder (2) and the cone sleeve (21) are covered with a sleeve (3) and a locking cover (31) threadedly connected to the sleeve (3), and the inlet end of the rubber cylinder (1) is covered with a sealing cover (4) pressed by the locking cover (31).

2. The quick-release dispensing head for a die bonding machine according to claim 1, characterized in that: The sealing cover (4) is provided with a glue injection hole (41) along the axis.

3. The quick-release dispensing head for a die bonding machine according to claim 2, characterized in that: The sealing cover (4) and the inlet end of the rubber cylinder (1) are provided with a sealing ring (5).

4. The quick-release glue dispensing head for a die bonding machine according to claim 3, characterized in that: A wiring hole (32) is provided on the sleeve (3) at a wiring location corresponding to the heating tube (2).

5. The quick-release dispensing head for a die bonding machine according to claim 4, characterized in that: The inner diameter of the outlet end of the sleeve (3) is smaller than the diameter of the cone sleeve (21).

6. The quick-release dispensing head for a die bonding machine according to claim 5, characterized in that: The diameter of the flange at the inlet end of the rubber cylinder (1) is greater than the inner diameter of the inlet end of the heating cylinder (2).

7. The quick-release glue dispensing head for a die bonding machine according to claim 6, characterized in that: The end of the lock cover (31) away from the rubber cylinder (1) is provided with a through hole (311) for accommodating the sealing cover (4) to pass through, and the end of the sealing cover (4) close to the rubber cylinder (1) is fixedly connected to a limiting ring (42), and the diameter of the limiting ring (42) is greater than the diameter of the through hole (311) and equal to the diameter of the flange at the inlet end of the rubber cylinder (1).

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