A collision protection device for a quartz piezoelectric nozzle

Abstract

The invention provides a collision protection device for a quartz piezoelectric nozzle, which comprises a shell (1), a collision terminal (2), and a telescopic assembly (3) for driving the nozzle to move. The shell is provided with a guide groove (4), a fixing ring (10), and a sealing cover (11), the collision terminal comprises a collision head (12), a indexing claw (5), and a tail groove (7), and the telescopic assembly (3) comprises a sliding claw (6), a connecting piece (8), and a spring (9). The problem that the quartz nozzle is easily damaged by collision in the existing drop-on-demand inkjet equipment is solved, the quartz nozzle is protected, the telescopic device is added on the basis of the collision terminal, the spring absorbs part of the collision energy in the initial collision stage, the nozzle is retracted into the shell of the protection device when the collision stroke reaches a certain degree, and the mounting nut (13) of the protection device is automatically unloaded when necessary, so that the nozzle is prevented from being secondarily damaged after being retracted.

Description

TECHNICAL FIELD

[0001] The present application relates to a collision protection device for a quartz piezoelectric nozzle, belonging to the field of production safety. TECHNICAL BACKGROUND

[0002] In recent years, drop-on-demand inkjet printing technology is more and more widely used in the fields of electronic circuit manufacturing, aerospace, bioengineering, etc., and the key core component of quartz nozzle in the production process is prone to breakage in collision due to lack of protection, which endangers production safety and increases production cost. A collision protection method with high reliability and strong applicability is urgently needed to be put into practical application.

[0003] At present, the quartz nozzle is often in a state of no protection, and a few models with collision protection heads can only provide limited protection during transportation, and have no effect on collision, head striking, etc. during processing. In order to further improve the safety in the printing process, it is particularly important to design a reliable and practical protection method. SUMMARY

[0004] In order to solve the problem of poor protection of the existing technology for the quartz nozzle mentioned in the background art, a collision protection method for a quartz piezoelectric nozzle is proposed.

[0005] The present application proposes a collision protection method for a quartz piezoelectric nozzle, according to which a device is designed including a shell, a collision terminal, and a telescopic component for driving the nozzle to move. A plurality of inclined conical guide grooves parallel to the axial direction of the shell are provided in the shell, the tail of the collision terminal is provided with a dividing claw and a tail groove, the quartz nozzle is placed in the hole at the head of the collision terminal, and the telescopic device is provided with a connecting piece and a sealing cover connected to the shell.

[0006] Preferably, the collision terminal and the mounting nut are made of 7075 aluminum alloy.

[0007] Preferably, the shell and the telescopic mechanism are made of a high polymer self-lubricating material.

[0008] Preferably, each component is machined or injection molded.

[0009] Preferably, the length of the front claw of the collision terminal should be longer than the length of the quartz nozzle after assembly.

[0010] Preferably, the front claw of the collision terminal should protrude out of the shell before collision.

[0011] Preferably, each component is in surface-to-surface or line-to-surface contact.

[0012] The quartz piezoelectric nozzle collision protection method has the advantages that the quartz piezoelectric nozzle collision protection method is improved on the basis of the original quartz piezoelectric nozzle assembly and protection method, a protection system is additionally arranged in the quartz piezoelectric nozzle and the printing system, when the nozzle collides with a workpiece due to the low assembly position, the collision terminal can unload the collision energy, and the nozzle is protected from being damaged, when the collision exceeds the designed stroke, the collision terminal is extruded by the connecting piece, and the collision terminal and the nozzle are retracted into the shell under the driving of the guide groove, the indexing claw, the tail groove and the sliding claw, and the fixed device on the shell is unloaded when the collision cannot be stopped. The method can significantly enhance the safety of the quartz piezoelectric nozzle in the manufacturing process. BRIEF DESCRIPTION OF DRAWINGS

[0013] The accompanying drawings, which form a part of the present application, are used to provide further understanding of the application, and suitable embodiments of the present application are used to explain the present application, and do not constitute improper limitations on the present application.

[0014] In the drawings:

[0015] Figure 1 It is a front view of the quartz piezoelectric nozzle collision protection mechanism according to the present application.

[0016] Figure 2 It is an axonometric view of the quartz piezoelectric nozzle collision protection mechanism according to the present application.

[0017] Figure 3 It is a sectional view of the quartz piezoelectric nozzle collision protection mechanism according to the present application.

[0018] Figure 4 It is a schematic view of the shell structure according to the present application.

[0019] Figure 5 It is a schematic view of the quartz piezoelectric nozzle according to the present application.

[0020] Figure 6 It is a schematic view of the sealing cover according to the present application.

[0021] Figure 7 It is a schematic view of the spring according to the present application.

[0022] Figure 8 It is a schematic view of the connecting piece according to the present application.

[0023] Figure 9 It is a schematic view of the telescopic mechanism according to the present application.

[0024] Figure 10 It is a schematic view of the indexing claw according to the present application.

[0025] LIST OF REFERENCE NUMERALS

[0026] 1 shell

[0027] 2 impact terminal

[0028] 3 telescopic mechanism

[0029] 4 guide slot

[0030] 5 indexing claw

[0031] 6 sliding claw

[0032] 7 tail slot

[0033] 8 spring

[0034] 9 connecting piece

[0035] 10 fixing ring

[0036] 11 sealing cover

[0037] 12 impact head

[0038] 13 mounting nut

[0039] 14 quartz quality nozzle

[0040] The specific embodiments of the present application are further described in detail below with reference to the accompanying drawings:

[0041] Specific embodiment one: see Figures 1-3 This embodiment describes a collision protection device for a quartz quality piezoelectric nozzle, which includes a shell (1), an impact terminal (2), and a telescopic assembly (3) for driving the nozzle to move. The shell is provided with a guide slot (4), a fixing ring (10), a sealing cover (11), a spring (8), and a connecting piece (9). The impact terminal includes an impact head (12), an indexing claw (5), and a tail slot (7). The telescopic assembly (3) includes a sliding claw (6). The size and the number of claws and slots are determined according to the size of the quartz quality nozzle to be assembled.

[0042] The impact head (12) and the mounting nut (13) are made of 7075 aluminum alloy.

[0043] The shell (1), the indexing claw (5), the tail slot (7), the telescopic mechanism (3), and the connecting piece (9) are made of a high polymer self-lubricating material.

[0044] The number of indexing claws (5) is the same as the number of guide slots (4) according to claim 1.

[0045] The number of sliding claws (6) should be half of the number of indexing claw tail slots (7).

[0046] The connecting piece (9) is inserted into the aperture of the sliding claw (6).

[0047] The spring (8) is arranged between the connecting piece (9) and the fixed ring (10) in the sealing cover (11).

[0048] The mutual cooperation of the guide groove (4), the index claw (5), the sliding claw (6) and the tail groove (7) of the collision protection device of the quartz piezoelectric nozzle achieves mechanism movement. When the impact head (12) is impacted, the index claw (5) on the impact terminal (2) is axially pressed to the sliding claw (6) along the guide groove (4), when the sliding claw (6) passes the tail groove (7), the sliding claw (6) and the index claw (5) slide relatively along the inclined surface contacted by them, so that the sliding claw (6) slides to the inclined surface of the tail groove (7), and stops sliding after falling into the groove of the tail groove (7). The groove of the tail groove (7) has a deep groove and a shallow groove, and the two grooves are staggered, and the effective extension stroke of the impact terminal (2) is the difference between the groove depths of the deep groove and the shallow groove. The extension power source is the spring (8). When the impact displacement exceeds the effective extension stroke of the impact terminal (2), the mounting nut (13) will be unlocked and self-rotated, and the device is automatically unloaded.

[0049] The quartz piezoelectric nozzle and the impact protection device are added in the assembly of the quartz piezoelectric nozzle and the printing system, the nozzle is retracted into the device housing when the nozzle and the processing surface are slightly impacted, the purpose of protecting the nozzle is achieved, the nozzle is extended after reset, and the printing system does not need to be re-corrected. When the impact stroke exceeds the effective stroke of the device, the device is unlocked and unloaded, and the nozzle and the device are prevented from being damaged.

[0050] The above specific implementation cases further specifically describe the purpose, technical scheme and final result of the present application. It should be understood that the above cases are only one of the specific implementation schemes of the present application, and are not used to limit the present application, and are a reasonable combination of the features of the above various embodiments, and any modification, replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A collision protection device for a quartz piezoelectric jet, characterized in that The device includes a shell (1), a collision terminal (2) and a telescopic assembly (3) for driving the action of the spray head; the shell (1) is provided with a plurality of guide grooves (4) which are parallel to the axial direction of the shell and are uniformly distributed, the end of the guide groove (4) is a slanting pyramid, and is matched with the tail degree claw (5) of the collision terminal (2) to realize the communication; the head end of the collision terminal (2) is provided with a collision head (12), and a quartz spray head (14) is assembled in the collision head (12); the number of the claw (5) is the same as the number of the guide groove (4), the tail of the claw (5) is provided with a tail groove (7), the tail groove (7) has two groove shapes of deep groove and shallow groove and is staggered, and is connected with the sliding claw (6) of the head of the telescopic assembly (3), the number of the sliding claw (6) is half of the number of the tail groove (7); the connecting piece (9) is inserted into the aperture of the sliding claw (6), the other end of the connecting piece (9) penetrates through the fixed ring (10) in the sealing cover (11), and the spring (8) is arranged between the connecting piece (9) and the fixed ring (10); wherein the effective telescopic stroke of the collision terminal (2) is the difference between the groove depths of the deep groove and the shallow groove of the tail groove (7).

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