Positioning clamp for gluing processing of electronic component

Abstract

The utility model discloses a positioning clamp for gluing processing of electronic components. The positioning clamp comprises a fixing plate and a sliding rod, a sliding rod is supported on the fixing plate, a sliding block is arranged on the sliding rod in a sliding fit mode, a rack is fixed to the sliding block, a driving mechanism is arranged on the side face of the rack, a movable extrusion piece is arranged at one end of the rack, and a fixed extrusion piece symmetrical to the movable extrusion piece is fixed to the fixing plate through a fixing support. An elastic air bag is clamped between the fixed extrusion sheet and the movable extrusion sheet, a vertical plate structure is arranged on the fixed plate, and an air bag shell is fixed on the vertical plate structure; the side, away from the fixing plate, of the air bag shell is arranged to be of a strip-shaped structure, sliding grooves distributed in an array mode are formed in the strip-shaped structure in an array mode, a clamping tooth is arranged in each sliding groove in a sliding fit mode, a body of each clamping tooth is a sliding strip embedded in the corresponding sliding groove in a sliding mode, a connecting rod is fixed to the side, away from the fixing plate, of each sliding strip, and the connecting rod stretches out of the air bag shell and is fixedly provided with a contact piece. The special-shaped circuit board positioning clamp has the beneficial effect of being suitable for positioning and clamping various special-shaped circuit boards.

Description

Technical Field

[0001] This utility model belongs to the technical field of circuit board processing equipment, and specifically relates to a positioning fixture for coating electronic components. Background Technology

[0002] Circuit board encapsulation is a technique that involves packaging integrated circuits with insulating plastic or ceramic materials. Taking chips as an example, the actual size and appearance we see are not the actual size and shape of the chip core, but rather the product after the chip core and other components have been encapsulated. Encapsulation is necessary and crucial for chips because it isolates them from the external environment to prevent impurities in the air from corroding the chip circuitry and causing a decline in electrical performance. Furthermore, encapsulated chips are easier to install and transport. The quality of the encapsulation technology also directly affects the performance of the chip itself.

[0003] Because there are many components on an integrated circuit board, in order to accurately apply adhesive to only the chips on the circuit board, the circuit board needs to be clamped and fixed. However, most existing general-purpose fixtures (such as a circuit board fixture with publication number CN205611072U) are only suitable for rectangular or rectangular circuit boards. For irregularly shaped circuit boards (such as the circuit board with publication number CN308870444S), a separate fixture needs to be designed, which is time-consuming and labor-intensive. Therefore, the existing technology needs a positioning fixture for adhesive application that can clamp different irregularly shaped circuit boards. Utility Model Content

[0004] The purpose of this invention is to provide a positioning fixture for coating electronic components, so as to solve the technical problem in the background art that the general circuit board fixture cannot clamp different irregularly shaped circuit boards.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A positioning fixture for coating electronic components includes: a fixed plate and a slide rod; the fixed plate has a horizontally rod-shaped slide rod supported by a slide rod bracket, a slider is slidably fitted on the slide rod, a rack is fixed on the slider, a drive mechanism is provided on the side of the rack to control the reciprocating motion of the rack, and a movable extrusion piece with an arc-shaped shell structure is provided at one end of the rack; a fixed extrusion piece symmetrically arranged with the movable extrusion piece is fixed on the fixed plate by a fixed bracket, an elastic airbag is clamped between the fixed extrusion piece and the movable extrusion piece, a vertical plate structure is provided on the fixed plate structure, and an airbag shell with a shell structure is fixed on the vertical plate structure; the side of the airbag shell away from the fixed plate is provided as a strip structure, and an array of grooves is arranged on the strip structure, a locking tooth is slidably fitted in each set of grooves, the main body of the locking tooth is a slide bar that is slidably embedded in the groove, a horizontal connecting rod is fixed on the side of the slide bar away from the fixed plate, the connecting rod protrudes out of the airbag shell and is fixed with a contact piece with a vertical plate structure.

[0007] Furthermore, to prevent the slider from rotating around the slide rod and affecting the stability of the device, the slide rod is a rod-shaped structure with a slotted longitudinal section, and the longitudinal section of the hole penetrating the slide rod on the corresponding slider is consistent with the longitudinal section of the slide rod.

[0008] Furthermore: In order to accurately control the air intake or exhaust volume of the elastic airbag, the drive mechanism includes: a servo motor and a gear; the servo motor is fixed on a fixed plate by a motor bracket, the output shaft of the servo motor is vertically set, and a gear is concentrically fixed on the output shaft of the servo motor, with the gear and rack meshing with each other.

[0009] Furthermore, in order to stabilize the movement of the connecting rod, the airbag shell is provided with a block-shaped guide block on the opening near the contact piece. The guide block has a horizontal channel that is consistent with the outer diameter of the connecting rod, and the connecting rod is embedded in the channel to form a sliding fit with the guide block.

[0010] Furthermore, in order to facilitate airflow in the elastic airbag and the telescopic airbag, and to facilitate the inspection and replacement of the elastic airbag and the telescopic airbag, the elastic airbag is provided with a first interface and the telescopic airbag is provided with a second interface, and the first interface and the second interface are detachable and sealed.

[0011] Furthermore, to avoid the elasticity of the telescopic airbag affecting the reset of the elastic airbag, the elastic airbag is made of elastic material and the wall of the elastic airbag is filled with an elastic steel ring. When the elastic airbag is in its maximum state, the telescopic airbag is in its contracted state.

[0012] Furthermore: In order to enable the locking teeth to reset automatically after the telescopic airbag is contracted, a spring is provided between the end of the slide bar and the slide groove near the fixed plate, and the spring has a tendency to shorten.

[0013] In summary, this utility model has the following beneficial effects:

[0014] Wide range of applications: Through the design of the clamping teeth and the air bladder, an external controller controls a servo motor to move the rack towards the fixed extrusion plate. This causes the movable extrusion plate at the end of the rack to move closer to the fixed extrusion plate, compressing the elastic air bladder. The compressed air bladder releases gas into the telescopic air bladder, inflating it. As the air bladder expands, the shell restricts its expansion direction, causing it to expand only towards the clamping teeth. This expansion pushes a slider towards the circuit board until the contact piece at the slider's tip touches the side of the circuit board. Upon contact, the air bladder continues to expand, pressing the contact piece firmly against the side of the circuit board. Since there are multiple sets of clamping teeth, the contact piece adaptably holds the irregular sides of the circuit board, as shown in the diagram. Then, an adhesive applicator can be used to apply adhesive to the components on the circuit board. This principle allows for the positioning and clamping of various irregularly shaped circuit boards, making it widely applicable. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the transmission structure of the drive mechanism in this utility model;

[0017] Figure 3 yes Figure 2 Enlarged view of the structure at point A in the middle;

[0018] Figure 4 This is a schematic diagram of the connection structure between the elastic airbag and the telescopic airbag in this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the telescopic airbag in this utility model;

[0020] Figure 6 This is a schematic diagram illustrating the working principle of this utility model for clamping irregularly shaped circuit boards;

[0021] Figure 7 This is a schematic diagram of the structure of the first embodiment of this utility model;

[0022] Figure 8 This is a schematic diagram of the structure of the second embodiment of this utility model;

[0023] Figure 9 This is a schematic diagram of the longitudinal section of the slide rod in this utility model;

[0024] Figure 10 This is a schematic diagram of the spring structure in this utility model.

[0025] In the diagram, 1. Fixed plate; 2. Slide rod; 3. Slider; 4. Rack; 5. Movable extrusion plate; 6. Fixed extrusion plate; 7. Drive mechanism; 8. Clamping tooth; 9. Airbag shell; 10. Elastic airbag; 11. Telescopic airbag; 12. Circuit board; 13. Component to be coated with glue; 14. Fixed side plate; 21. Slide rod bracket; 61. Fixed bracket; 71. Servo motor; 72. Gear; 81. Slide bar; 82. Connecting rod; 83. Contact piece; 84. Spring; 91. Slide groove; 92. Guide block; 101. First interface; 111. Second interface. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] Example:

[0028] Please see Figures 1-10 The present invention provides the following technical solution:

[0029] A positioning fixture for applying adhesive to electronic components includes: a fixed plate 1 and a slide rod 2; a horizontally rod-shaped slide rod 2 is supported on the fixed plate 1 by a slide rod bracket 21, a slider 3 is slidably fitted on the slide rod 2, a rack 4 is fixed on the slider 3, a drive mechanism 7 is provided on the side of the rack 4 to control the reciprocating motion of the rack 4, and a movable extrusion plate 5 with an arc-shaped shell structure is provided at one end of the rack 4. A fixed extrusion plate 6, symmetrically arranged with the movable extrusion plate 5, is fixed on the fixed plate 1 by a fixed bracket 61. The fixed extrusion plate 6 and the movable extrusion plate... An elastic airbag 10 is held between 5. A vertical plate structure is provided on the fixed plate 1. An airbag shell 9 with a shell structure is fixed on the vertical plate structure. The side of the airbag shell 9 away from the fixed plate 1 is provided as a strip structure. The strip structure has an array of grooves 91. A locking tooth 8 is slidably engaged in each set of grooves 91. The main body of the locking tooth 8 is a sliding strip 81 that is slidably embedded in the groove 91. A horizontal connecting rod 82 is fixed on the side of the sliding strip 81 away from the fixed plate 1. The connecting rod 82 protrudes out of the airbag shell 9 and is fixed with a contact piece 83 with a vertical plate structure.

[0030] The slide bar 2 is a rod-shaped structure with a slotted longitudinal section, and the longitudinal section of the hole penetrating the slide bar 2 on the corresponding slider 3 is consistent with the longitudinal section of the slide bar 2.

[0031] The drive mechanism 7 includes: a servo motor 71 and a gear 72; the servo motor 71 is fixed on the fixed plate 1 by a motor bracket, the output shaft of the servo motor 71 is vertically set, and the gear 72 is concentrically fixed on the output shaft of the servo motor 71, and the gear 72 and the rack 4 mesh with each other.

[0032] The airbag shell 9 has a block-shaped guide block 92 on the opening near the contact piece 83. The guide block 92 has a horizontal channel that is the same as the outer diameter of the connecting rod 82. The connecting rod 82 is embedded in the channel and forms a sliding fit with the guide block 92.

[0033] The elastic airbag 10 is provided with a first interface 101, and the telescopic airbag 11 is provided with a second interface 111. The first interface 101 and the second interface 111 are detachably sealed.

[0034] The elastic airbag 10 is made of elastic material and the wall of the elastic airbag 10 is filled with an elastic steel ring. When the elastic airbag 10 is in its maximum state, the telescopic airbag 11 is in its contracted state.

[0035] A spring 84 is provided between the slider 81 and the slide groove 91 near the end of the fixed plate 1. The spring 84 has a tendency to shorten.

[0036] When using:

[0037] First embodiment:

[0038] like Figure 7 As shown, when one side of the circuit board 12 is a straight edge, a fixed side plate 14 with a vertical plate structure is fixed to the straight edge of the circuit board 12, so that the straight edge of the circuit board 12 is in close contact with the fixed side plate 14.

[0039] An external controller is connected to the servo motor 71 to control the rotation of the servo motor 71. When the servo motor 71 rotates, it drives the rack 4 to move through the gear 72. Therefore, the direction of movement of the rack 4 can be controlled by controlling the rotation direction of the servo motor 71.

[0040] The servo motor 71, controlled by an external controller, drives the rack 4 towards the fixed extrusion plate 6. This causes the movable extrusion plate 5 at the end of the rack 4 to move closer to the fixed extrusion plate 6, compressing the elastic airbag 10. After the elastic airbag 10 is compressed, the gas inside enters the telescopic airbag 11, inflating it. The telescopic airbag 11 expands after inflation. Because the airbag shell 9 restricts the expansion direction of the telescopic airbag 11, it can only expand towards the side of the airbag shell 9 closest to the retaining teeth 8. Therefore, the inflated telescopic airbag 11 pushes the slider 81 towards the circuit board 12 until the contact piece 83 at the front end of the slider 81 contacts the side of the circuit board 12. After the contact piece 83 contacts the side of the circuit board 12, the telescopic airbag 11 continues to expand, and the contact piece 83 presses firmly against the side of the circuit board 12. Because there is more than one set of retaining teeth 8, the contact piece 83 will... Figure 7 As shown, the irregular sides of the circuit board 12 are pressed in an adaptive manner, and then the adhesive coating equipment can be used to coat and encapsulate the components 13 to be coated on the circuit board 12.

[0041] After the adhesive is applied and sealed, the servo motor 71 is controlled by an external controller to move the rack 4 away from the fixed extrusion plate 6. As a result, the movable extrusion plate 5 at the end of the rack 4 moves away from the fixed extrusion plate 6, and the elastic airbag 10 between the movable extrusion plate 5 and the fixed extrusion plate 6 is released from compression. The elastic airbag 10 elastically resets under the loss of external force. The restored elastic airbag 10 will draw the gas in the telescopic airbag 11 out through the first interface 101 and the second interface 111, and the telescopic airbag 11 will retract, causing the slide bar 81 to lose the compression of the telescopic airbag 11. As a result, the slide bar 81 will move away from the circuit board 12 under the action of the spring 84. Therefore, the connecting rod 82 and the contact piece 83 connected to the slide bar 81 will move with the slide bar 81, and the contact piece 83 will release its clamping on the circuit board 12.

[0042] Then the encapsulated circuit board 12 can be removed, and the encapsulation process can be repeated for the next circuit board 12.

[0043] Second embodiment (applicable to cases where there is no straight edge on circuit board 12):

[0044] like Figure 8 As shown, the basic principle of the second embodiment is the same as that of the first embodiment. The only difference is that, for the case where there is no straight edge on the circuit board 12, the second embodiment uses a set of the present invention to replace the fixed side plate 14, and directly uses two sets of the present invention to clamp the circuit board 12 in both directions. The other principles of the second embodiment are the same as those of the first embodiment, so they will not be repeated.

[0045] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A positioning fixture for applying adhesive to electronic components, comprising: a fixing plate (1) and a sliding rod (2); characterized in that: A horizontal rod-shaped slide bar (2) is supported on the fixed plate (1) by a slide bar bracket (21). A slider (3) is slidably fitted on the slide bar (2). A rack (4) is fixed on the slider (3). A drive mechanism (7) that can control the reciprocating motion of the rack (4) is provided on the side of the rack (4). A movable extrusion plate (5) with an arc-shaped shell structure is provided at one end of the rack (4). A fixed extrusion plate (6) symmetrically arranged with the movable extrusion plate (5) is fixed on the fixed plate (1) by a fixed bracket (61). An elastic airbag (10) is sandwiched between the fixed extrusion plate (6) and the movable extrusion plate (5). The fixed plate (1) is provided with a vertical plate structure, and an airbag shell (9) of a shell structure is fixed on the vertical plate structure. The side of the airbag shell (9) away from the fixed plate (1) is provided with a strip structure, and an array of grooves (91) are arranged on the strip structure. A locking tooth (8) is slidably engaged in each set of grooves (91). The main body of the locking tooth (8) is a sliding strip (81) that is slidably embedded in the groove (91). A horizontal connecting rod (82) is fixed on the side of the sliding strip (81) away from the fixed plate (1). The connecting rod (82) protrudes out of the airbag shell (9) and is fixed with a contact piece (83) of a vertical plate structure.

2. The positioning fixture for coating electronic components according to claim 1, characterized in that: The slide bar (2) is a rod-shaped structure with a slotted longitudinal section. The longitudinal section of the hole penetrating the slide bar (2) on the corresponding slider (3) is consistent with the longitudinal section of the slide bar (2).

3. The positioning fixture for coating electronic components according to claim 1, characterized in that: The drive mechanism (7) includes: a servo motor (71) and a gear (72); the servo motor (71) is fixed on the fixed plate (1) by a motor bracket, the output shaft of the servo motor (71) is vertically set, and the gear (72) is concentrically fixed on the output shaft of the servo motor (71), and the gear (72) and the rack (4) mesh with each other.

4. A positioning fixture for coating electronic components according to claim 1, characterized in that: The airbag shell (9) has a block-shaped guide block (92) on the opening near the contact piece (83). The guide block (92) has a horizontal channel that is consistent with the outer diameter of the connecting rod (82). The connecting rod (82) is embedded in the channel and forms a sliding fit with the guide block (92).

5. A positioning fixture for coating electronic components according to claim 1, characterized in that: The elastic airbag (10) is provided with a first interface (101), and the telescopic airbag (11) is provided with a second interface (111). The first interface (101) and the second interface (111) are detachable and sealed.

6. A positioning fixture for coating electronic components according to claim 5, characterized in that: The elastic airbag (10) is made of elastic material and the wall of the elastic airbag (10) is filled with an elastic steel ring. When the elastic airbag (10) is in its maximum state, the telescopic airbag (11) is in its contracted state.

7. A positioning fixture for coating electronic components according to claim 1, characterized in that: A spring (84) is provided between the slider (81) and the groove (91) near the end of the fixed plate (1), and the spring (84) has a tendency to shorten.

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