Tin spraying device for laser range finder circuit board production

Abstract

The utility model relates to the technical field of circuit board production, in particular to a tin spraying device for laser range finder circuit board production, which is reasonable in structural design and comprises a horizontal annular sliding rail, a sliding block, a clamping assembly, a lifting push rod, a mounting plate, a tin spraying head and a hot air leveling head. The inner turntable pushes the clamping jaws to move along the radial direction of the tray, so that the laser range finder circuit board is reliably clamped before tin spraying; after clamping, when an outer rotary bearing is used for driving the laser range finder circuit board to rotate, a paint spraying point can be adjusted to be located on the center line of a straight part where an annular guide rail pair is located, then the annular guide rail pair is used for driving the paint spraying point to linearly move to the position under a tin spraying head, and the tin spraying requirements of all positions of the laser range finder circuit board are met in the mode; in addition, after the tin spraying head sprays the tin, the hot air leveling head can be used for quickly carrying out hot air leveling treatment, so that the tin is uniformly cured.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board production, in particular to a solder spraying device for laser rangefinder circuit board production. Background Art

[0002] In the production of laser rangefinder circuit boards, the solder spraying device plays a crucial role. The main function of the solder spraying device is to coat a layer of liquid solder on the exposed copper surface of the PCB and evenly cure it through hot air to form a protective film. This solder coating greatly improves the solderability of the copper surface and ensures the stability and reliability of the subsequent welding process of components such as laser emitters, receivers, and photodiodes. This reduces the occurrence of solder bridging and cold soldering phenomena, thereby ensuring the stability and durability of the circuit connection, which is the basis for accurate measurement of the laser rangefinder.

[0003] The solder spraying device isolates air and moisture through solder spraying to prevent oxidation and corrosion. Copper is prone to oxidation in the natural environment, and copper oxide will seriously affect the welding quality and electrical performance of the circuit. The tin layer formed by the solder spraying process acts as a barrier, effectively isolating air and moisture and preventing oxidation and corrosion of the copper surface. This is particularly important for laser rangefinder circuit boards working in humid or corrosive environments and can significantly extend their service life.

[0004] Traditional solder spraying devices for laser rangefinder circuit board production have deficiencies in use. One is that they cannot reliably clamp the circuit board before solder spraying and cannot adjust the position of the circuit board according to needs after clamping, which affects the solder spraying efficiency; the other is that they cannot quickly perform hot air leveling treatment after solder spraying. Therefore, it is necessary to optimize and improve the structure of traditional solder spraying devices for laser rangefinder circuit board production. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the above problems existing in the traditional technology and provide a solder spraying device for laser rangefinder circuit board production.

[0006] To achieve the above technical purpose and reach the above technical effect, the utility model is realized through the following technical solutions:

[0007] A solder spraying device for laser rangefinder circuit board production includes a horizontal annular slide rail, sliders, a clamping assembly, a lifting push rod, a mounting plate, a solder spraying head, and a hot air leveling head. A plurality of sliders forming an annular guide pair with the horizontal annular slide rail are installed on the horizontal annular slide rail. A clamping assembly for clamping the laser rangefinder circuit board is installed on the upper side of the slider. The annular guide pair is provided with a solder spraying station at the straight section part, and a lifting push rod is fixed through a substrate above the solder spraying station. The movable end of the lifting push rod is installed with a solder spraying head and a hot air leveling head through a mounting plate.

[0008] The clamping assembly includes a bottom plate, an outer slewing bearing, a tray, a convex tube, an inner slewing bearing, an inner turntable and a jaw. An outer slewing bearing is installed on the upper side of the bottom plate. The driving end of the outer slewing bearing fixedly supports a tray. A convex tube extending into the inner cavity of the outer slewing bearing is provided on the lower side of the tray. An inner slewing bearing is fixed near the bottom end inside the convex tube. The driving end of the inner slewing bearing fixedly supports an inner turntable. The inner turntable and the tray jointly limit a plurality of jaws capable of radial displacement.

[0009] Further, in the solder spraying device for producing a laser rangefinder circuit board, a laser indicator lamp for indicating the solder spraying position is installed on the lower side of the mounting plate.

[0010] Further, in the solder spraying device for producing a laser rangefinder circuit board, both the outer slewing bearing and the inner slewing bearing adopt a structure with the outer ring fixed and the inner ring rotating.

[0011] Further, in the solder spraying device for producing a laser rangefinder circuit board, a plurality of radial sliding grooves are evenly formed in the tray along the circumferential direction.

[0012] Further, in the solder spraying device for producing a laser rangefinder circuit board, a plurality of arc-shaped pushing grooves are evenly formed in the inner turntable along the circumferential direction.

[0013] Further, in the solder spraying device for producing a laser rangefinder circuit board, the number of the jaws, the radial sliding grooves and the arc-shaped pushing grooves is equal. The jaw is composed of a pushing head, a push rod and a clamping block. The push rod is slidably limited in the radial sliding groove. The bottom end of the push rod is provided with a pushing head slidably limited in the arc-shaped pushing groove. The top end of the push rod is provided with a clamping block. A circuit board edge bayonet is formed on the inner side of the clamping block.

[0014] The beneficial effects of the present utility model are as follows:

[0015] The structure of the present utility model is reasonably designed. It includes a horizontal annular slide rail, a slider, a clamping assembly, a lifting push rod, a mounting plate, a solder spraying head and a hot air leveling head. The clamping assembly is mainly composed of a bottom plate, an outer slewing bearing, a tray, a convex tube, an inner slewing bearing, an inner turntable and a jaw. The clamping assembly drives the inner turntable to rotate by using the inner slewing bearing. The inner turntable then pushes the jaws to displace radially along the tray, so as to reliably clamp the laser rangefinder circuit board before solder spraying. After clamping, when driving the laser rangefinder circuit board to rotate by using the outer slewing bearing, the spraying point can be adjusted to be located on the center line of the straight part where the annular guide pair is located. Then, the annular guide pair is used to drive the spraying point to linearly displace to the directly below of the solder spraying head, so as to meet the solder spraying requirements of various positions of the laser rangefinder circuit board in this way. In addition, after the solder spraying head sprays solder, the hot air leveling head can be used to quickly perform hot air leveling treatment to uniformly cure it.

[0016] Of course, it is not necessary for any product implementing the present utility model to achieve all of the above advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 is a three-dimensional structural schematic diagram of the whole of the present utility model;

[0019] Figure 2 is a structural schematic diagram of the clamping assembly in the present utility model;

[0020] Figure 3 is an exploded structural schematic diagram of the clamping assembly in the present utility model;

[0021] Figure 4 is a structural schematic diagram of the outer slewing bearing in the present utility model;

[0022] Figure 5 is a structural schematic diagram of the tray in the present utility model;

[0023] Figure 6 is a structural schematic diagram of the inner slewing bearing in the present utility model;

[0024] Figure 7 is a structural schematic diagram of the inner turntable in the present utility model;

[0025] Figure 8 is a structural schematic diagram of the jaw in the present utility model;

[0026] In the drawings, the list of components represented by each reference numeral is as follows:

[0027] 1 - horizontal annular slide rail, 2 - slider, 3 - clamping assembly, 31 - bottom plate, 32 - outer slewing bearing, 33 - tray, 331 - radial chute, 34 - convex tube, 35 - inner slewing bearing, 36 - inner turntable, 361 - arc-shaped push groove, 37 - jaw, 371 - push head, 372 - push rod, 373 - clamping block, 374 - circuit board edge bayonet, 4 - lifting push rod, 5 - mounting plate, 6 - solder spraying head, 7 - hot air leveling head, 8 - laser rangefinder circuit board. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0029] As Figures 1-8 shown, this embodiment provides a solder spraying device for the production of a laser rangefinder circuit board, including a horizontal annular slide rail 1, a slider 2, a clamping assembly 3, a lifting push rod 4, a mounting plate 5, a solder spraying head 6 and a hot air leveling head 7. A plurality of sliders 2 forming an annular guide pair with it are installed on the horizontal annular slide rail 1, and a clamping assembly 3 for clamping the laser rangefinder circuit board 8 is installed on the upper side of the slider 2; a solder spraying station is provided in the straight section part of the annular guide pair, and a lifting push rod 4 is fixed through a substrate above the solder spraying station, and a solder spraying head 6 and a hot air leveling head 7 are installed on the movable end of the lifting push rod 4 through a mounting plate 5.

[0030] In this embodiment, the clamping assembly 3 includes a bottom plate 31, an outer rotary bearing 32, a tray 33, a convex tube 34, an inner rotary bearing 35, an inner turntable 36 and a clamping jaw 37. An outer rotary bearing 32 is installed on the upper side of the bottom plate 31, the driving end of the outer rotary bearing 32 fixedly supports a tray 33, and a convex tube 34 extending into the inner cavity of the outer rotary bearing is provided on the lower side of the tray 33. An inner rotary bearing 35 is fixed near the bottom end inside the convex tube 34, the driving end of the inner rotary bearing 35 fixedly supports an inner turntable 36, and a plurality of clamping jaws 37 capable of radial displacement are jointly limited by the inner turntable 36 and the tray 33.

[0031] In this embodiment, a laser indicator for indicating the solder spraying position is installed on the lower side of the mounting plate 5.

[0032] In this embodiment, both the outer rotary bearing 32 and the inner rotary bearing 35 adopt a structure with the outer ring fixed and the inner ring rotating.

[0033] In this embodiment, the tray 33 is evenly provided with a plurality of radial sliding grooves 331 along the circumferential direction.

[0034] In this embodiment, the inner turntable 36 is evenly provided with a plurality of arc-shaped pushing grooves 361 along the circumferential direction.

[0035] In this embodiment, the number of the clamping jaws 37, the radial sliding grooves 331 and the arc-shaped pushing grooves 361 is equal. The clamping jaw 37 is composed of a push head 371, a push rod 372 and a clamping block 373. The push rod 371 is slidably limited in the radial sliding groove 331, the bottom end of the push rod 372 is installed with a push head 371 slidably limited in the arc-shaped pushing groove 361, the top end of the push rod 372 is installed with a clamping block 373, and a circuit board edge bayonet 374 is provided on the inner side of the clamping block 373.

[0036] The specific application of this embodiment is as follows: This device includes a horizontal annular slide rail 1, a slider 2, a clamping assembly 3, a lifting push rod 4, a mounting plate 5, a solder spraying head 6, and a hot air leveling head 7. The clamping assembly 3 is mainly composed of a bottom plate 31, an outer slewing bearing 32, a tray 33, a convex tube 34, an inner slewing bearing 35, an inner turntable 36, and a jaw 37. The clamping assembly 3 drives the inner turntable 36 to rotate by using the inner slewing bearing 35. The inner turntable 36 then pushes the jaw 37 to displace along the radial direction of the tray 33, so as to reliably clamp the laser rangefinder circuit board 8 before solder spraying. After clamping, when the outer slewing bearing 32 drives the laser rangefinder circuit board 8 to rotate, the spraying point can be adjusted to be located on the center line of the straight part where the annular guide pair is located. Then, the annular guide pair is used to drive the spraying point to linearly displace to directly below the solder spraying head 6, so as to meet the solder spraying requirements of various positions of the laser rangefinder circuit board 8 in this way. In addition, after the solder spraying head 6 sprays solder, the hot air leveling head 7 can be used to quickly perform hot air leveling treatment to make it uniformly cured.

[0037] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific implementation manners. Obviously, according to the content of this specification, many modifications and variations can be made. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A solder spraying device for the production of a laser rangefinder circuit board, characterized in that, It includes a horizontal circular slide rail, sliders, a clamping assembly, a lifting push rod, a mounting plate, a solder spraying head and a hot air leveling head. A plurality of sliders forming a circular guide pair with the horizontal circular slide rail are mounted on the horizontal circular slide rail. A clamping assembly for clamping a laser rangefinder circuit board is mounted on the upper side of the slider. The circular guide pair is provided with a solder spraying station at the straight section part, and a lifting push rod is fixed above the solder spraying station through a substrate. A solder spraying head and a hot air leveling head are mounted on the movable end of the lifting push rod through a mounting plate. The clamping assembly includes a bottom plate, an outer slewing bearing, a tray, a convex tube, an inner slewing bearing, an inner turntable and clamping jaws. An outer slewing bearing is mounted on the upper side of the bottom plate. The driving end of the outer slewing bearing fixedly supports a tray. A convex tube extending into the inner cavity of the outer slewing bearing is provided on the lower side of the tray. An inner slewing bearing is fixedly mounted near the bottom end inside the convex tube. The driving end of the inner slewing bearing fixedly supports an inner turntable. A plurality of clamping jaws capable of radial displacement are jointly restricted by the inner turntable and the tray.

2. The solder spraying device for the production of the laser rangefinder circuit board according to claim 1, characterized in that, A laser indicator for indicating the solder spraying position is mounted on the lower side of the mounting plate.

3. The solder spraying device for the production of the laser rangefinder circuit board according to claim 1, characterized in that, Both the outer slewing bearing and the inner slewing bearing adopt a structure with the outer ring fixed and the inner ring rotating.

4. The solder spraying device for laser rangefinder circuit board production according to claim 3, characterized in that, A plurality of radial sliding grooves are evenly formed in the tray along the circumferential direction.

5. The solder spraying device for the production of a laser rangefinder circuit board according to claim 4, wherein, A plurality of arc-shaped pushing grooves are evenly formed in the inner turntable along the circumferential direction.

6. The solder spraying device for the production of the laser rangefinder circuit board according to claim 5, characterized in that, The number of the clamping jaws, the radial sliding grooves and the arc-shaped pushing grooves is equal. The clamping jaw is composed of a pushing head, a push rod and a clamping block. The push rod is slidably restricted in the radial sliding groove. A pushing head slidably restricted in the arc-shaped pushing groove is mounted at the bottom end of the push rod. A clamping block is mounted at the top end of the push rod. A circuit board edge bayonet is formed inside the clamping block.

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