Ultrasonic welding fixture

Abstract

The present invention relates to an ultrasonic welding fixture; from bottom to top, it comprises a bottom plate, a module frame support plate and an upper pressing plate, which are used for pressing a side pressing component of an HPD module frame, and the upper pressing plate, the module frame support plate and the bottom plate are detachably connected via a detachable connecting piece; wherein, a negative pressure groove is provided on the upper surface of the bottom plate, and a through hole connected to the negative pressure groove is provided on the side wall of the bottom plate; a mounting hole into which a welding end of the HPD module frame can be inserted is provided on the upper surface of the module frame support plate, and positioning pins are arranged at intervals along the circumference of the mounting hole, and welding grooves are provided on opposite sides of the upper pressing plate, and the bottom of the welding groove is connected to the mounting hole; the structural design of the ultrasonic welding fixture can solve the problem that the existing HPD module frame is fixed by means of clamps, has fewer fixing surfaces, is prone to loosening during welding, and cannot guarantee the welding effect between the HPD module frame and the chip.

Description

Technical Field

[0001] The invention belongs to the technical field of welding tooling, and in particular relates to an ultrasonic welding fixing tooling. Background Art

[0002] The existing HPD module frame and chip welding technology is simple, without redundant jigs, with high assembly efficiency and low cost, and can handle welding materials from multiple sides. Specifically, the ultrasonic welding of the HPD module frame directly adopts a press-fit fixation method. First, the chip is placed on the welding platform, the HPD module frame is placed in the welding position, the side clamps are retracted and fixed, and then fixed by the side clamps. The welding platform is installed on a turntable so that welding materials can be handled from multiple sides.

[0003] However, the HPD module frame is fixed by clamping, with fewer fixing surfaces, and is prone to loosening during the welding process, making it impossible to ensure the welding effect between the HPD module frame and the chip. At the same time, the existing mold lacks a positioning mechanism for the HPD module frame, making it impossible to determine the front and back of the product, which can easily cause welding errors.

[0004] In view of this, the present invention urgently needs to provide an ultrasonic welding fixing tool. Summary of the invention

[0005] The purpose of the present invention is to provide an ultrasonic welding fixing tool. The structural design of the ultrasonic welding fixing tool can solve the technical problem that the existing HPD module frame is fixed by a clamping method, has a small fixing surface, is prone to loosening during the welding process, and cannot ensure the welding effect between the HPD module frame and the chip; at the same time, the HPD module frame lacks a positioning mechanism, cannot judge the front and back sides of the product, and easily causes welding errors.

[0006] The ultrasonic welding fixture provided by the present invention comprises, from bottom to top, a bottom plate, a module frame support plate and an upper pressing plate, which are used to press the side pressing assembly of the HPD module frame. The upper pressing plate, the module frame support plate and the bottom plate are detachably connected through a detachable connecting piece; wherein,

[0007] A negative pressure groove is provided on the upper surface of the base plate, and a through hole connected to the negative pressure groove is provided on the side wall of the base plate; a mounting hole into which the welding end of the HPD module frame can be inserted is provided on the module frame support plate, and positioning pins are arranged at intervals along the circumference of the mounting hole on the upper surface of the module frame support plate, and welding grooves are provided on opposite sides of the upper pressure plate, and the bottom of the welding groove is connected to the mounting hole.

[0008] Preferably, the side pressure assembly comprises a vertical plate, a transverse plate extending laterally is provided on the top of the vertical plate, and a connecting unit for connecting to the lifting mechanism is detachably connected to one side of the vertical plate away from the transverse plate.

[0009] Preferably, the bottom of each vertical plate is detachably connected to two L-shaped rods for clamping the tooling pedestal.

[0010] Preferably, a first flexible pad is provided on the lower surface of the transverse plate.

[0011] Preferably, the connecting unit comprises a connecting plate, and wing plates are respectively extended outwards on two opposite sides of the connecting plate.

[0012] Preferably, the upper pressing plate has an insert, one end of the insert extends out of an embedding groove, and the insert is detachably connected to the embedding groove.

[0013] Preferably, a second flexible pad is provided at the bottom of the insert extending outside the embedding groove.

[0014] Preferably, the first flexible pad and the second flexible pad are both made of polyurethane.

[0015] Preferably, upwardly extending anti-error pins are provided on both sides of the module frame support plate, and pin holes corresponding to the anti-error pins are provided on the upper pressure plate.

[0016] Preferably, the module frame support plate is further provided with guide holes disposed on opposite sides of the mounting hole, and one side of each guide hole is connected to the mounting hole;

[0017] The bottom plate is provided with positioning grooves on opposite sides of the negative pressure groove;

[0018] The mounting hole is arranged concentrically with the negative pressure groove;

[0019] The bottom of the upper pressing plate is provided with protrusions corresponding to the guide holes, and the height of the protrusions is equal to the thickness of the module frame support plate.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. The present invention uses the structural design of the ultrasonic welding fixture to extract air from the through hole, so that negative pressure can be generated in the negative pressure groove, and the chip can be adsorbed on the bottom plate. The module frame support plate is placed on the bottom plate, and the HPD module frame is placed in the module frame support plate. The HPD module frame is placed on the module frame support plate through the positioning pins, and the HPD module frame welding part extends into the installation hole. The upper pressure plate is pressed on the module frame support plate, and the protrusion of the upper pressure plate extends into the installation hole to guide the installation and facilitate quick assembly; the upper pressure plate, the module frame support plate and the bottom plate are detachably connected to each other through a detachable connector, and then the two sides of the HPD module frame are crimped by the side pressure assembly to ensure the fixation of the HPD module frame and the chip position. The welding gun can be extended from the welding groove to complete the welding of the chip and the HPD module frame. The ultrasonic welding fixture has a simple structure, and the split design is easy to assemble. The negative pressure groove can ensure the fixation of the chip, and the positioning pins can ensure the accurate positioning of the HPD module frame, and there will be no loosening problem, ensuring the welding effect.

[0022] 2. Through the structural design of the side pressure assembly of the present invention, the cross plate can be crimped onto the side edge of the HPD module frame, further ensuring the stability of the HPD module frame and preventing looseness. The width of the cross plate matches the welding groove and can be inserted into the welding groove. The cross plate welding groove is surrounded by a welding gap. One end of the vertical plate is connected to the connecting unit, and the connecting unit can be connected to the lifting mechanism to realize the overall lifting of the side pressure assembly and facilitate installation.

[0023] 3. The upper pressure plate of the present invention is provided with pin holes corresponding to the anti-error pins, providing a positioning mechanism for the HPD module frame to determine the front and back sides of the product, and the problem of welding errors will not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of the ultrasonic welding fixing tooling described in the present invention;

[0026] Figure 2 It is a structural schematic diagram of the ultrasonic welding fixture of the present invention (exploded diagram, without side pressure components);

[0027] Figure 3 It is a structural schematic diagram of the side pressure assembly described in the present invention;

[0028] Figure 4 is a schematic structural diagram of the connection unit described in the present invention;

[0029] Figure 5 It is a structural schematic diagram of the upper pressing plate described in the present invention.

[0030] Reference numerals:

[0031] 1. Bottom plate; 101. Negative pressure groove; 102. Through hole; 103. Positioning groove; 2. Module frame support plate; 201. Mounting hole; 202. Guide holes; 203. Anti-mistake pin; 3. Upper pressure plate; 301. Pin hole; 302. Protrusion; 303. Welding groove; 4. Side pressure assembly; 41. Vertical plate; 42. Horizontal plate; 43. Connecting unit; 431. Connecting plate; 432. Wing plate; 44. First flexible pad; 45. Insert; 46. Second flexible pad; 5. Removable connector; 6. L-shaped rod. DETAILED DESCRIPTION

[0032] like Figure 1 , Figure 2 As shown, an ultrasonic welding fixing tool comprises, from bottom to top, a base plate 1, a module frame support plate 2 and an upper pressure plate 3, a side pressure component 4 for pressing the HPD module frame, and the upper pressure plate 3, the module frame support plate 2 and the base plate 1 are detachably connected via a detachable connector 5; wherein, a negative pressure groove 101 is provided on the upper plate surface of the base plate 1, and a through hole 102 connected to the negative pressure groove 101 is provided on the side wall of the base plate 1; a mounting hole 201 into which the welding end of the HPD module frame can be inserted is provided on the module frame support plate 2, and positioning pins 204 are arranged at intervals along the circumference of the mounting hole 201 on the upper plate surface of the module frame support plate 2, and welding grooves 303 are provided on opposite sides of the upper pressure plate 3, and the bottom of the welding groove 303 is connected to the mounting hole 201.

[0033] The present invention uses the structural design of the ultrasonic welding fixing tooling to extract air from the through hole 102, so that negative pressure can be generated in the negative pressure groove 101, and the chip can be adsorbed on the base plate 1, and the module frame support plate 2 is placed on the base plate 1, and the HPD module frame is placed in the module frame support plate 2. The HPD module frame is placed on the module frame support plate 2 through the positioning pin 204, and the HPD module frame welding part extends into the mounting hole 201. The upper pressure plate 3 is pressed on the module frame support plate 2, and the protrusion 302 of the upper pressure plate 3 extends into the mounting hole 201 to guide the installation and facilitate quick assembly; the upper pressure plate 3, the module frame support plate 2 and the base plate 1 are detachably connected to each other through the detachable connecting piece 5, and then the two sides of the HPD module frame are crimped by the side pressure assembly 4 to ensure that the HPD module frame and the chip position are fixed, and the welding gun can be extended from the welding groove 303 to complete the welding of the chip and the HPD module frame. The ultrasonic welding fixture has a simple structure and a split design that is easy to assemble. The negative pressure groove can ensure the fixation of the chip, and the positioning pin 204 can ensure the accurate positioning of the HPD module frame without loosening problems, thereby ensuring the welding effect.

[0034] The protrusion 302 of the present invention is made of polyurethane encapsulation.

[0035] like Figure 1 , Figure 4 As shown, the side pressure assembly 4 of this embodiment includes a vertical plate 41, a horizontal plate 42 extending laterally is provided on the top of the vertical plate 41, and a connecting unit 43 for connecting to a lifting mechanism is detachably connected to one side of the vertical plate 41 away from the horizontal plate 42.

[0036] Through the structural design of the side pressure assembly 4 of the present invention, the horizontal plate 42 can be pressed against the side edge of the HPD module frame, further ensuring the stability of the HPD module frame and preventing loosening. The width of the horizontal plate 42 matches the welding groove 303 and can be inserted into the welding groove 303. A welding gap is provided between the horizontal plate 42 and the welding groove 303. One end of the vertical plate 41 is connected to the connecting unit 43, and the connecting unit 43 can be connected to the lifting mechanism to realize the overall lifting of the side pressure assembly 4 for easy installation.

[0037] like Figure 3 As shown, the bottom of each vertical plate 41 of this embodiment is detachably connected to two L-shaped rods 6 for clamping the tooling base.

[0038] The L-shaped rod 6 can be clamped to the tooling base to ensure that the vertical plate 41 moves horizontally without offset, thereby ensuring the accuracy of the crimping position of the HPD module frame; ensuring that the horizontal plate 42 moves to a position that exposes the welding gap, thereby ensuring that automatic welding can be achieved.

[0039] like Figure 3 As shown, the lower surface of the horizontal plate 42 of this embodiment is provided with a first flexible pad 44, and the material of the first flexible pad 44 is polyurethane rubber-coated to avoid hard contact between the horizontal plate 42 and the HPD module frame, thereby achieving flexible protection of the HPD module frame.

[0040] like Figure 4 As shown, the connection unit 43 of this embodiment includes a connection plate 431 , and wing plates 432 extend outward from opposite sides of the connection plate 431 .

[0041] The present invention designs an upper pressing plate, and embedding grooves are provided on both sides of the top of the upper pressing plate 3. The outer side walls of the embedding groove are connected with the side walls of the upper pressing plate 3. An insert 45 is embedded in the embedding groove. One end of the insert 45 extends out of the embedding groove. The insert 45 and the embedding groove are detachably connected. The insert 45 can be overlapped on the upper pressing plate 3, and the positioning of the cross plate 42 can be achieved to ensure the crimping effect. The HPD module frame will not be over-crimped, which will cause damage to the HPD module frame.

[0042] like Figure 2 As shown, in this embodiment, a second flexible pad 46 is provided at the bottom of the insert 45 extending outside the embedding groove; the second flexible pad 46 is made of polyurethane rubber, and the second flexible pad 46 is crimped on the upper pressure plate to avoid hard friction, thereby protecting the upper pressure plate 3.

[0043] like Figure 2 As shown, the upper pressing plate 3 is provided with pin holes 301 corresponding to each anti-error pin, providing a positioning mechanism for the HPD module frame to determine the front and back sides of the product, and preventing welding errors from occurring.

[0044] The module frame support plate 2 of the present invention is further provided with guide holes 202 on opposite sides of the mounting hole 201 . One side of each guide hole 202 is connected to the mounting hole 201 . Each protrusion 302 can penetrate into the mounting hole 201 along the corresponding guide hole 202 .

[0045] The bottom plate 1 of the present invention is provided with positioning grooves 103 disposed on two opposite sides of the negative pressure groove 101 .

[0046] The specific installation process is as follows: first place the chip on the bottom plate 1, then place the module frame support plate 2 on the bottom plate 1, place the HPD module frame on the module frame support plate 2, and insert the HPD module frame welding end from the mounting hole 201 to complete the installation and fixation of the upper pressing plate 3. Connect the side pressing assembly 4 to the three-way motion mechanism, and drive the two side pressing assemblies 4 to the crimping position through the three-way motion mechanism to press the side of the HPD module frame to ensure the stability of the HPD module frame, and insert the welding gun from the welding groove into the mounting hole 201 to complete the welding of the HPD module frame and the chip; the three-way motion mechanism must ensure the position between the horizontal plate 42 and the welding groove to ensure the gap for the welding gun to extend into.

[0047] The mounting hole 201 of the present invention is arranged concentrically with the negative pressure groove 101;

[0048] The bottom of the upper pressing plate 3 of the present invention is provided with protrusions 302 corresponding to the guide holes 202 , and the height of the protrusions 302 is equal to the thickness of the module frame support plate 2 .

[0049] The detachable connecting member 5 includes a first connecting hole arranged on the bottom plate, a second connecting hole arranged on the module frame support plate 2, and a third connecting hole arranged on the upper pressure plate 3. Fastening bolts are inserted into the first connecting hole, the second connecting hole and the third connecting hole.

[0050] The cross-sectional area of ​​the negative pressure groove 101 of the present invention is smaller than the area of ​​the chip.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An ultrasonic welding fixture, characterized in that: From bottom to top, the bottom plate (1), the module frame support plate (2) and the upper pressing plate (3) are sequentially provided, and a side pressing component (4) is used to press the HPD module frame. The upper pressing plate (3), the module frame support plate (2) and the bottom plate (1) are detachably connected via a detachable connecting piece (5); The upper plate surface of the bottom plate (1) is provided with a negative pressure groove (101), and the side wall of the bottom plate (1) is provided with a through hole (102) connected to the negative pressure groove (101); the module frame support plate (2) is provided with a mounting hole (201) into which the HPD module frame welding end can be inserted, and the upper plate surface of the module frame support plate (2) is provided with positioning pins (204) arranged at intervals along the circumference of the mounting hole (201); welding grooves (303) are provided on opposite sides of the upper pressure plate (3), and the bottom of the welding groove (303) is connected to the mounting hole (201); the side pressure assembly (4) comprises a vertical plate (41), and a horizontal plate (42) extending laterally is provided on the top of the vertical plate (41), and a connecting unit (43) for connecting to a lifting mechanism is detachably connected to a side of the vertical plate (41) away from the horizontal plate (42); The bottom of each upright plate (41) is detachably connected to two L-shaped rods (6) for clamping the tooling pedestal; The connecting unit (43) comprises a connecting plate (431), and wing plates (432) are respectively extended outwards on two opposite sides of the connecting plate (431); Embedding grooves are provided on both sides of the top of the upper pressing plate (3), the outer side walls of the embedding grooves are connected to the side walls of the upper pressing plate (3), an insert (45) is embedded in the embedding groove, one end of the insert (45) extends out of the embedding groove, and the insert (45) is detachably connected to the embedding groove; The module frame support plate (2) is further provided with guide holes (202) disposed on two opposite sides of the mounting hole (201), and one side of each guide hole (202) is connected to the mounting hole (201); The bottom plate (1) is provided with positioning grooves (103) disposed on two opposite sides of the negative pressure groove (101); The mounting hole (201) is arranged concentrically with the negative pressure groove (101); The bottom of the upper pressing plate (3) is provided with protrusions (302) corresponding to the guide holes (202), and the height of the protrusions (302) is equal to the thickness of the module frame support plate (2).

2. The ultrasonic welding fixture according to claim 1, characterized in that: A first flexible pad (44) is provided on the lower plate surface of the transverse plate (42).

3. The ultrasonic welding fixture according to claim 2, characterized in that: A second flexible pad (46) is provided at the bottom of the insert (45) extending outside the embedding groove.

4. The ultrasonic welding fixture according to claim 1, characterized in that: The first flexible pad (44) and the second flexible pad (46) are both made of polyurethane.

5. The ultrasonic welding fixture according to claim 1, characterized in that: Both sides of the module frame support plate (2) are provided with anti-error pins (203) extending upwards, and the upper pressing plate (3) is provided with pin holes (301) corresponding to the anti-error pins (203).

Images