Clamp for clamping electronic element with lead and tin immersion equipment

Abstract

The utility model discloses a clamp for clamping an electronic element with a lead and tin immersion equipment, which belong to the technical field of tin immersion of electronic elements and comprise a mounting plate for accommodating the electronic element and a limiting rod for limiting the position of the electronic element on the mounting plate, the electronic component is provided with a head structure and at least two lead legs installed on the head structure, a through hole with the size not smaller than the outer contour of the electronic component is formed in the installation plate so that the electronic component can penetrate through the through hole, a limiting rod is arranged at the bottom of the through hole, and the limiting rod divides the space of the bottom of the through hole into at least two subspaces. The number of the subspaces is matched with the number of the lead legs, so that one lead leg is arranged in one subspace, and the head structure is clamped on the limiting rod; when the clamp is used, the electronic element is mounted in the through hole, the head structure is clamped on the limiting rod, and each lead leg extends into one subspace, so that the mounting of the electronic element can be completed, the damage to the clamp when the electronic element is mounted or taken out is reduced, and the service life of the clamp is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of tinning of electronic components with leads, in particular to a clamp and tinning equipment for clamping electronic components with leads. Background Art

[0002] For electronic components with leads, if the lead legs need to be dipped in tin, the conventional method is to dip them one by one manually, which is time-consuming. For this reason, the prior art has designed a device for dipping in tin and a method for improving the efficiency of dipping in tin, including a fixture, which is mainly composed of a substrate, a fixed plate, an elastic horizontal cantilever movable plate, a stopper, etc. The two fixed plates are respectively fixed on the lower end surface of the substrate and close to the left and right end surfaces with screws; the two elastic horizontal cantilever movable plates are symmetrically arranged on the upper end surface of the substrate corresponding to the two fixed plates, and the elastic horizontal cantilever movable plate is T-shaped, and the fixed end of the elastic horizontal cantilever movable plate is fixed to the inner side of the upper end surface of the substrate with screws, and the clamping end of the elastic horizontal cantilever movable plate is arranged correspondingly to the clamping end of the fixed plate. The clamping ends of the two fixed plates and the clamping ends of the two elastic horizontal cantilever movable plates are both protruding from the substrate, and are correspondingly provided with an inward angle α facing the substrate of 6° to 8°. Limiters are respectively arranged on the outer sides of the clamping ends of the two elastic horizontal cantilever movable plates on the upper end surface of the substrate. When using it, lift the braid vertically with both hands, close to the substrate and lift the upper edge of the elastic horizontal cantilever movable piece about 1mm, push the braid against the fixed piece, and release it to complete the clamping; when removing the soldered braid, pull it down with both hands or one hand. Although this equipment for tinning can improve the efficiency of tinning, it requires specific techniques when loading or removing the braid. Improper operation will cause damage to the elastic horizontal cantilever movable piece / fixed piece, affecting the service life of the equipment.

[0003] Therefore, how to design a clamp and tinning equipment for clamping electronic components with leads so as not to damage the clamp when loading or removing electronic components with leads, so as to effectively increase the service life of the clamp, is a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0004] The purpose of the utility model is to provide a clamp and tinning equipment for clamping electronic components with leads in view of the defects and shortcomings in the prior art, so as to reduce the damage to the clamp when loading or removing electronic components with leads and effectively increase the service life of the clamp.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The utility model provides a clamp for clamping an electronic component with a lead wire, comprising a mounting plate for accommodating the electronic component and a limiting rod for limiting the position of the electronic component on the mounting plate, wherein the electronic component has a head structure and at least two lead wire legs mounted on the head structure, a through hole is provided on the mounting plate, the size of the through hole is not less than the outer contour size of the electronic component, so that the electronic component can pass through the through hole, the limiting rod is provided at the bottom of the through hole, the limiting rod divides the space at the bottom of the through hole into at least two sub-spaces, the number of the sub-spaces matches the number of the lead wire legs, so that one lead wire leg can be installed in one of the sub-spaces, and the head structure is clamped on the limiting rod.

[0007] Preferably, the distance between the limiting rod and the top of the through hole is not less than the axial length of the head structure, so that the head structure can be buried in the through hole.

[0008] Preferably, the distance between the limiting rod and the top of the through hole is matched with the axial length of the head structure, so that the head structure is flush with the top surface of the through hole.

[0009] Preferably, the limiting rod extends along the length direction of the mounting plate.

[0010] Preferably, the through holes are evenly distributed on the mounting plate.

[0011] The utility model also provides a tin dipping device, including the fixture for clamping the electronic component holding the lead, a mounting head for installing the fixture, and a driving component for driving the mounting head to move up and down, the mounting plate is assembled and connected to the mounting head, and the driving component is transmission-connected to the mounting head.

[0012] Preferably, the driving component is a cylinder telescopic structure, which includes a fixed cylinder barrel and a piston rod passing through the cylinder barrel, and one end of the piston rod close to the mounting head is fixedly connected to the mounting head to drive the mounting head to move up and down.

[0013] Preferably, a limiter is provided at the other end of the piston rod away from the mounting head to limit the lowest position of the piston rod when it moves downward.

[0014] Preferably, a stopper is provided at one end of the mounting head close to the cylinder barrel to limit the highest position of the piston rod when it moves upward.

[0015] Preferably, the tin immersion equipment also includes a bracket and a base, the cylinder is fixedly arranged on the bracket, and a slide groove is provided at one end of the blocker close to the bracket, and the slide groove is slidably matched with the bracket to limit the direction of the mounting head when moving up and down.

[0016] Compared with the prior art, the utility model has achieved the following technical effects:

[0017] 1. The utility model arranges a through hole on the mounting plate, and arranges a limiting rod at the bottom of the through hole. The limiting rod divides the space at the bottom of the through hole into sub-spaces whose number is the same as the number of lead legs. When placing electronic components, one lead leg extends into one sub-space, and the head structure is stuck on the limiting rod. When taking out, the electronic component can be directly taken out of the through hole by clamping the head structure. This reduces the damage to the fixture when loading or taking out electronic components with leads, and effectively improves the service life of the fixture.

[0018] Compared with the prior art, other technical solutions of this application have achieved the following technical effects:

[0019] 2. The utility model sets the distance between the limit rod and the top of the through hole to match the axial length of the head structure, so that when the clamp is installed on the tin dipping device, the mounting head on the tin dipping device can abut the head structure of the electronic component, thereby reducing the shaking of the electronic component and improving the tin dipping effect of the lead leg. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a schematic diagram of the axial structure of a fixture for clamping an electronic component with leads;

[0022] Figure 2 A schematic diagram of a top view of a fixture for clamping an electronic component with leads;

[0023] Figure 3 It is a structural schematic diagram of the tin immersion equipment;

[0024] Figure 4 It is a partial enlarged structural schematic diagram of the tin immersion equipment;

[0025] Figure 5 A schematic diagram of the structure of electronic components.

[0026] Among them, 1. mounting plate; 2. limit rod; 3. head structure; 4. lead leg; 5. through hole; 6. groove; 7. lug; 8. magnetic area; 9. through hole area; 10. magnetic absorber; 11. cylinder; 12. piston rod; 13. blocker; 14. limiter; 15. bracket; 16. base; 17. slide groove. DETAILED DESCRIPTION

[0027] 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.

[0028] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] like Figures 1 to 2 As shown, the utility model provides a clamp for clamping an electronic component with a lead wire, comprising a mounting plate 1 for accommodating the electronic component and a limiting rod 2 for limiting the position of the electronic component on the mounting plate 1. Figure 5 As shown, the electronic component has a head structure 3 and at least two lead legs 4 installed on the head structure 3, a through hole 5 is opened on the mounting plate 1, the size of the through hole 5 is not less than the outer contour size of the electronic component, so that the electronic component can pass through the through hole 5, and a limiting rod 2 is provided at the bottom of the through hole 5, and the limiting rod 2 divides the space at the bottom of the through hole 5 into at least two sub-spaces, and the number of sub-spaces matches the number of lead legs 4, so that one lead leg 4 can be installed in one sub-space, and the head structure 3 is clamped on the limiting rod 2; to facilitate the placement and removal of electronic components, the present application preferably sets a groove 6 on the upper end surface of the mounting plate 1 and on both sides of the width direction or length direction of the through hole 5, the depth of the groove 6 is less than the depth of the through hole 5, and the groove 6 can be of any shape. The present application preferably has the groove 6 as a semicircle. When in use, the head structure 3 of the electronic component is clamped with tweezers to place the electronic component into or remove it from the through hole 5.

[0030] The electronic component can be a resistor, capacitor, diode or other electronic component that needs to be tinned, which has at least two lead legs 4. As a preferred embodiment of the present application, the electronic component is a capacitor with two lead legs 4. The arrangement direction of the limit rod 2 can be along the length direction of the mounting plate 1, or along the width direction of the mounting plate 1. If it is along the width direction of the mounting plate 1, a limit rod 2 needs to be installed at the bottom of each through hole 5, and the length and width of the through hole 5 also need to be exchanged, that is, the through hole 5 needs to be rotated 90° in the existing state, which not only complicates the structure, but also increases the assembly process. For this reason, the present application preferably arranges the limit rod 2 along the length direction of the mounting plate 1, so that the limit rod 2 can pass through the bottom space of all through holes 5 to reduce the complexity of the structure and improve the assembly efficiency. Specifically, lugs 7 are provided on the left and right sides of the bottom of the mounting plate 1, and the limit rod 2 is installed on the lugs 7. As another preferred embodiment of the present application, the limit rod 2 divides the space at the bottom of the through hole 5 into two sub-spaces of equal size, and the through holes 5 are evenly distributed on the mounting plate 1.

[0031] The distance between the limiting rod 2 and the top of the through hole 5 is not less than the axial length of the head structure 3, so that the head structure 3 is buried in the through hole 5. Further, the distance between the limiting rod 2 and the top of the through hole 5 is set to be equal to the axial length of the head structure 3, so that the top surface of the head structure 3 is flush with the top surface of the through hole 5, so that after the mounting plate 1 is installed on the tinning device, the part of the tinning device that contacts the top surface of the through hole 5 can abut against the head structure 3 of the electronic component, so as to avoid the electronic component shaking back and forth during tinning and affecting the tinning effect of the lead leg 4.

[0032] like Figures 3 to 4 As shown, the present application also provides a tinning device, including a fixture for clamping electronic components holding leads, a mounting head for installing the fixture, and a driving component for driving the mounting head to move up and down, the mounting plate 1 is assembled on the mounting head, and the driving component is connected to the mounting head in a transmission manner. The mounting plate 1 and the mounting head can be connected by screws, bolts or snaps, or by magnetic adsorption. Preferably, the mounting plate 1 of the present application and the mounting head are installed by magnetic adsorption. Specifically, the mounting plate 1 is a metal plate with magnetism at both ends, and the magnetic area 8 on the mounting plate 1 is located on the left and right sides of the through hole area 9. The mounting head is a magnetic absorber 10. The mounting plate 1 is adsorbed on the magnetic absorber 10 to complete the assembly between the mounting plate 1 and the magnetic absorber 10.

[0033] In order to prevent the magnetic absorber 10 from crushing the head structure 3 of the electronic component after the mounting plate 1 is installed on the magnetic absorber 10, the present application preferably provides a protective strip made of flexible material, such as soft rubber, silicone or sponge, at a position corresponding to the through hole area 9 on the bottom surface of the magnetic absorber 10, and provides a slot hole matched with the size of the head of the electronic component on the protective strip, so that when the mounting plate 1 is adsorbed on the magnetic absorber 10, the head of the electronic component is just stuck in the slot hole of the protective strip. This not only limits the shaking of the electronic component back and forth, but also avoids damage to the electronic component.

[0034] The driving component can be any one of a screw transmission structure, a gear rack structure, an electric push rod structure or a cylinder telescopic structure. As a preferred embodiment of the present application, the driving component is a cylinder telescopic structure, which includes a fixed cylinder barrel 11 and a piston rod 12 passing through the cylinder barrel 11. The air inlet and the air outlet of the cylinder barrel 11 are respectively connected to the reversing valve. The end of the piston rod 12 close to the magnetic absorber 10 is fixedly connected to the magnetic absorber 10. The direction of the intake air is changed by the reversing valve to change the movement direction of the piston rod 12, thereby driving the magnetic absorber 10 to move up and down through the piston rod 12. The descent speed of the capacitor product can also be regulated by controlling the flow rate of the intake air, and the tinning time of the capacitor product can also be controlled by the reversing valve.

[0035] A stopper 13 is provided at one end of the magnetic absorber 10 close to the cylinder 11, and the piston rod 12 is fixedly connected to the magnetic absorber 10 through the stopper 13 to limit the highest position of the piston rod 12 when it moves up. When the piston rod 12 is in this position, the lead legs 4 of the capacitor product are located outside the soldering furnace to facilitate the removal of the capacitor product after tinning; a limiter 14 is provided at one end of the piston rod 12 away from the magnetic absorber 10 to limit the lowest position of the piston rod 12 when it moves down; the setting position of the limiter 14 on the piston rod 12 can be fixed, It can also be adjustable. As a preferred embodiment of the present application, the setting position of the limiter 14 on the piston rod 12 is adjustable. Specifically, a thread is set at the end of the piston rod 12 away from the magnetic absorber 10, so that the limiter 14 is threadedly connected to the piston rod 12. By changing the threaded position of the limiter 14 on the piston rod 12, the lowest position of the piston rod 12 when it moves downward is changed to adapt to soldering furnaces of different heights and capacitor products with lead legs 4 of different lengths, so that the lead legs 4 can be just completely immersed in the tin liquid.

[0036] The tinning equipment also includes a bracket 15 and a base 16. The cylinder 11 is fixedly arranged on the bracket 15. The end of the blocker 13 close to the bracket 15 is provided with a slide groove 17. The slide groove 17 is slidably matched with the bracket 15 to limit the direction of the magnetic absorber 10 when moving up and down. The bottom of the bracket 15 is fixedly connected to the base 16. When in use, the soldering furnace is placed on the base 16, the clamp with the capacitor product fixed is installed on the magnetic absorber 10, and the piston rod 12 is driven to move down until the lower end surface of the limiter 14 contacts the cylinder 11. At this time, the lead legs 4 of the capacitor product are all immersed in the liquid in the soldering furnace and stay for a period of time. After the tinning is completed, the piston rod 12 is driven to move up until the upper end surface of the blocker 13 contacts the cylinder 11. At this time, the lead legs 4 of the capacitor product are separated from the soldering furnace, and then the clamp and the capacitor products on the clamp are removed, and another batch of capacitor products to be tinned are replaced. Repeat the above steps until all capacitor products are tinned.

[0037] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A fixture for clamping an electronic component with leads, characterized in that: It comprises a mounting plate for accommodating an electronic component and a limiting rod for limiting the position of the electronic component on the mounting plate, wherein the electronic component has a head structure and at least two lead legs mounted on the head structure, a through hole is provided on the mounting plate, the size of the through hole is not less than the outer contour size of the electronic component so that the electronic component can pass through the through hole, the limiting rod is provided at the bottom of the through hole, the limiting rod divides the space at the bottom of the through hole into at least two sub-spaces, the number of the sub-spaces matches the number of the lead legs, so that one lead leg can be installed in one of the sub-spaces, and the head structure is clamped on the limiting rod.

2. The fixture for clamping an electronic component with leads according to claim 1, characterized in that: The distance between the limiting rod and the top of the through hole is not less than the axial length of the head structure, so that the head structure is buried in the through hole.

3. The fixture for clamping an electronic component with leads according to claim 2, characterized in that: The distance between the limiting rod and the top of the through hole is matched with the axial length of the head structure, so that the head structure is flush with the top surface of the through hole.

4. The fixture for clamping an electronic component with leads according to any one of claims 1 to 3, characterized in that: The limiting rod extends along the length direction of the mounting plate.

5. The fixture for clamping an electronic component with leads according to claim 1, characterized in that: The through holes are evenly distributed on the mounting plate.

6. A tinning equipment, characterized in that: It comprises a fixture for clamping electronic components holding leads as described in any one of claims 1 to 5, a mounting head for installing the fixture, and a driving component for driving the mounting head to move up and down, the mounting plate is assembled and connected to the mounting head, and the driving component is transmission-connected to the mounting head.

7. The tin immersion equipment according to claim 6, characterized in that: The driving component is a cylinder telescopic structure, which includes a fixed cylinder barrel and a piston rod passing through the cylinder barrel. One end of the piston rod close to the mounting head is fixedly connected to the mounting head to drive the mounting head to move up and down.

8. The tin immersion equipment according to claim 7, characterized in that: A stopper is provided at the other end of the piston rod away from the mounting head to limit the lowest position of the piston rod when it moves downward.

9. The tin immersion equipment according to claim 8, characterized in that: A stopper is provided at one end of the mounting head close to the cylinder barrel to limit the highest position of the piston rod when it moves upward.

10. The tin immersion equipment according to claim 9, characterized in that: The tin immersion equipment also includes a bracket and a base, the cylinder is fixedly arranged on the bracket, and a slide groove is provided at one end of the blocker close to the bracket. The slide groove is slidably matched with the bracket to limit the direction of the installation head when it moves up and down.

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