Lifting platform of bonding machine

Abstract

The utility model relates to the technical field of bonding machines, in particular to a lifting platform of a bonding machine, which comprises a base, a bedplate, a connecting rod mechanism and a driving screw rod, the connecting rod mechanism is arranged between the base and the bedplate, the driving screw rod is rotatably limited on the base, the driving screw rod is in threaded connection with the connecting rod mechanism, and the driving screw rod is connected with the bedplate. The driving screw is used for driving the connecting rod assembly to stretch out and draw back so that the platen can ascend and descend. A screw sleeve is fixed to the end of the driving screw, a plurality of first elastic pieces are positioned on the base, and the screw sleeve abuts against the ends of the first elastic pieces. The lifting platform of the bonding machine has the characteristics that the operation space for placing the chip and the substrate on the workbench is enlarged, and the bonding machine is compact in structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bonding machine, especially to a lifting platform of bonding machine. BACKGROUND

[0002] Bonding equipment is the key equipment of chip packaging, and the bonding machine bonds two ends of a lead wire on a chip and a substrate in a ball welding or wedge welding mode. The worktable of the bonding machine is located below the bonding head and is used to carry the chip and the substrate, so that the chip and the substrate can be welded on the lead wire by lowering the cleaver. The worktable in the prior art is usually fixed at the lower part of the bonding machine. For example, the gold wire bonding machine disclosed in CN201910035664.4 is provided with a stand at the middle of the rear end of the bonding machine body. The bottom end surface of the stand is perpendicular to the worktable, and the bottom end surface of the stand is welded to the worktable. The bonding machine has a compact structure, the distance between the bonding head and the worktable is very short, and the operation space for placing the chip and the substrate on the worktable is small, which can easily damage the bonding head. The XY worktable has a large space requirement, which can increase the volume of the bonding machine. SUMMARY

[0003] The utility model aims at providing a lifting platform of bonding machine, which has the characteristics of increasing the operation space for placing the chip and the substrate on the worktable and making the structure of the bonding machine compact.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A lifting platform of bonding machine, comprising a base, a table plate, a connecting rod mechanism and a driving screw, the connecting rod mechanism is installed between the base and the table plate, the driving screw is rotatably limited in the base, the driving screw is threadedly connected with the connecting rod mechanism, and the driving screw is used to drive the connecting rod assembly to stretch and retract so as to lift the table plate.

[0006] The end of the driving screw is fixed with a screw sleeve, the base is provided with a plurality of first elastic members, and the end of the screw sleeve abuts against the first elastic members.

[0007] Further, the first elastic member is a ball head plug column, and the end surface of the screw sleeve abuts against the ball of the ball head plug column.

[0008] Alternatively, the first elastic member is an elastic column, the end surface of the screw sleeve abuts against the end surface of the elastic column, and the end surface of the screw sleeve is slidingly matched with the end of the elastic column.

[0009] Further, the base is provided with a second elastic member, and the end of the second elastic member abuts against the driving screw.

[0010] Further, the base is fixed with a mounting block, the first elastic member is mounted on the mounting block, the drive screw penetrates through a mounting slot of the mounting block, and the drive screw is fixed with two limiting rings, which are arranged on the two sides of the mounting slot.

[0011] Further, the connecting rod mechanism comprises a sliding plate and a plurality of connecting rod assemblies, each of which is rotatably connected with the sliding plate, the table plate and the base.

[0012] The sliding plate is in sliding fit with the base, and the drive screw is in threaded connection with the sliding plate.

[0013] Further, the bottom of the base is provided with a containing cavity, the sliding plate is located in the containing cavity, the base is provided with a first accommodating through hole, and the connecting rod assembly is connected to the table plate after penetrating through the first accommodating through hole.

[0014] Further, the connecting rod assembly comprises a first connecting rod and a second connecting rod, the bottom end of the first connecting rod is rotatably connected with the sliding plate, and the top end of the first connecting rod is rotatably connected with the table plate.

[0015] One end of the second connecting rod is rotatably connected with the base, and the other end is rotatably connected with the first connecting rod.

[0016] Further, the sliding plate is connected with a spring, and the end of the spring is fixed to the base.

[0017] Further, the top of the sliding plate is fixed with a connecting block through a screw, the connecting block is provided with a threaded hole, and the drive screw is inserted into the threaded hole.

[0018] The table plate comprises a support plate and a face plate, the face plate is fixed to the top surface of the support plate, the support plate is provided with a second accommodating through hole, and the second accommodating through hole is opposite to the position of the connecting block.

[0019] The technical scheme provided by the utility model can have the following beneficial effects:

[0020] The connecting rod mechanism is retracted or extended by rotating the drive screw, so as to drive the table plate to ascend or descend, and the workbench is fixed to the table plate, so that the ascending and descending of the workbench is realized. The lifting platform of the technical scheme can be applied to not only a semi-automatic bonder but also a full-automatic bonder. The operation space for placing the chip and the substrate on the workbench is increased in the lifting mode, so that the bonder structure is compact.

[0021] The first elastic member on the base keeps abutting against the screw sleeve, which can offset the assembly gap of the drive screw between the base and the connecting rod mechanism, so that the connecting rod mechanism can be immediately driven when the drive screw is rotated, the idling phenomenon is prevented, and the precision of the height adjustment of the workbench is improved. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the lifting platform of a bonding machine according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the bottom surface of the lifting platform of the bonding machine;

[0024] Figure 3 This is a schematic diagram of the interaction between the drive screw and the linkage mechanism;

[0025] Figure 4 It is a schematic diagram of the engagement of the drive screw, screw sleeve and the first elastic element;

[0026] Figure 5 This is a schematic diagram of the bonding machine's lifting platform after the panel has been removed;

[0027] The components include: base 1, mounting block 11, receiving cavity 12, platform 2, support plate 21, second clearance through hole 211, panel 22, sliding plate 31, connecting rod assembly 32, first connecting rod 321, second connecting rod 322, spring 33, connecting block 34, drive screw 4, limit ring 41, screw sleeve 42, first elastic element 5, and second elastic element 6. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] The following is combined Figures 1 to 5 This describes a lifting platform for a bonding machine according to an embodiment of the present invention.

[0030] The lifting platform of the bonding machine in this embodiment includes a base 1, a platform 2, a linkage mechanism and a drive screw 4. The linkage mechanism is installed between the base and the platform 2. The drive screw 4 is rotatably limited to the base 1. The drive screw 4 is threadedly connected to the linkage mechanism. The drive screw 4 is used to drive the linkage assembly 32 to extend and retract to raise and lower the platform 2.

[0031] The end of the drive screw 4 is fixed with a screw sleeve 42, and the base is positioned with a plurality of first elastic elements 5, the screw sleeve abutting against the end of the first elastic element 5.

[0032] When the driving screw 4 rotates, the connecting rod mechanism can be driven to extend and retract, thereby driving the platform 2 to ascend and descend, and the workbench is fixed to the platform 2, that is, the ascending and descending of the workbench is realized. By limiting the diameter and thread pitch of the driving screw 4 and limiting the relationship between the moving distance of the driving end of the connecting rod mechanism and the extension height, the mapping relationship between the rotation angle of the driving screw 4 and the lifting distance of the platform 2 can be established, so that the lifting platform of the utility model can not only be applied to a semi-automatic bonder, but also be applied to a full-automatic bonder. In the technical scheme, the platform 2 is increased in the operation space for placing the chip and the substrate on the workbench in the lifting mode, so that the bonder structure is compact.

[0033] Specifically, in order to facilitate the positioning of the chip and the substrate on the workbench of the bonder, the workbench can be lifted. By rotating the driving screw 4, the connecting rod mechanism is elongated to drive the workbench on the platform 2 to carry the chip and the substrate to ascend to a working position, and then the wedge is lowered to perform wire bonding. During the wire bonding operation, the workbench is repeatedly lifted and descended, and the stable movement and the lifting distance precision of the workbench have a great influence on the wire bonding precision. Therefore, in the technical scheme, the first elastic member 5 on the base keeps abutting against the screw sleeve, which can eliminate the assembly gap of the driving screw 4 between the base and the connecting rod mechanism, and when the driving screw 4 is rotated, the connecting rod mechanism can be immediately driven, the idling phenomenon is prevented, and the precision of the height adjustment of the workbench is improved. It can be understood that the screw sleeve is manually rotated or connected with the motor for driving, so as to operate the driving screw 4 and realize the lifting of the workbench.

[0034] Illustratively, the first elastic member 5 is a ball head plug column, the end face of the screw sleeve 42 abuts against the ball of the ball head plug column; or the first elastic member 5 is an elastic column, the end face of the screw sleeve 42 abuts against the end face of the elastic column, and the end face of the screw sleeve 42 is in sliding fit with the end of the elastic column, the elastic column is composed of a column body and a spring 33, and the base 1 limits the column body and the spring 33, so that the column body can be extended and retracted. Preferably, the first elastic member 5 is a ball head plug column, and the installation structure of the ball head plug column on the base 1 is simple.

[0035] Preferably, the base is positioned with a second elastic member 6, and the end of the second elastic member 6 abuts against the driving screw 4. The second elastic member 6 keeps abutting against the driving screw 4, which plays a positioning role for the driving screw 4. The second elastic member 6 is a ball head plug column or an elastic column.

[0036] In an embodiment of the utility model, the base 1 is fixed with the mounting block 11, the first elastic part 5 is installed on the mounting block 11, the drive screw 4 penetrates the installation groove of the mounting block 11, the drive screw 4 is fixed with two limit rings 41, and the two limit rings 41 are separately arranged on the two sides of the installation groove. The installation of the mounting block 11 makes the drive screw 4 easy to install on the base 1. During assembly, first, the first elastic part 5 is fixed in the mounting block 11, then the drive screw 4 is clamped into the installation groove, and finally the mounting block 11 is fixed on the base 1 by screws. Specifically, the cross section of the installation groove is U-shaped, the second elastic part 6 is inserted into the installation groove and abuts against the drive screw 4, and the drive screw 4 is limited.

[0037] In order to improve the lifting stability of the platform 2, further, the connecting rod mechanism comprises a sliding plate 31 and a plurality of connecting rod assemblies 32, each of the connecting rod assemblies 32 is rotatably connected with the sliding plate 31, the platform 2 and the base 1 respectively, the sliding plate 31 is in sliding fit with the base 1, and the drive screw 4 is in threaded connection with the sliding plate 31. The plurality of connecting rod assemblies 32 are connected to the edges of the platform 2, so that the platform 2 keeps a horizontal state during lifting. Preferably, the connecting rod assemblies 32 are four, which are separately arranged at the four corners of the sliding plate 31.

[0038] Specifically, the bottom of the base 1 is provided with a containing cavity 12, the sliding plate 31 is located in the containing cavity 12, the base 1 is provided with a first accommodating hole, and the connecting rod assembly 32 is connected to the platform 2 after penetrating the first accommodating hole. By arranging the sliding plate 31 in the containing cavity 12 of the base 1, the connecting rod mechanism is installed in a hidden mode, and when the platform 2 is lowered to the lowest position, the connecting rod assembly 32 is hidden. Exemplarily, the top of the sliding plate 31 is provided with a sliding block, and the top surface of the containing cavity 12 of the base 1 is fixed with a sliding rail, and the sliding block is installed on the sliding rail.

[0039] Preferably, the connecting rod assembly 32 comprises a first connecting rod 321 and a second connecting rod 322, the bottom end of the first connecting rod 321 is rotatably connected with the sliding plate 31, the top end of the first connecting rod 321 is rotatably connected with the platform 2, one end of the second connecting rod 322 is rotatably connected with the base 1, and the other end of the second connecting rod 322 is rotatably connected with the first connecting rod 321. The connecting rod assembly 32 has a simple structure. When the drive screw 4 drives the sliding plate 31 to move, the bottom end of the first connecting rod 321 moves, the first connecting rod 321 swings based on the pulling action of the second connecting rod 322, and then the platform 2 is lifted or lowered.

[0040] In order to further improve the stability of the platform 2 during lifting, the sliding plate 31 is connected with a spring 33, and the end of the spring 33 is fixed to the base 1. The spring 33 makes the threads of the drive screw 4 and the threads of the sliding plate 31 closely fit, which can further improve the accuracy of height adjustment of the platform 2 while improving the stability of the platform 2 during lifting.

[0041] In order to facilitate the installation and maintenance of the driving screw 4 on the sliding plate 31, further, the top of the sliding plate 31 is fixed with a connecting block 34 through screws, the connecting block 34 is provided with a threaded hole, the driving screw 4 is inserted into the threaded hole; the table plate 2 comprises a support plate 21 and a face plate 22, the face plate 22 is fixed to the top surface of the support plate 21, the support plate 21 is provided with a second accommodating through hole 211, the second accommodating through hole 211 is opposite to the position of the connecting block 34. The connecting screw of the connecting block 34 and the sliding plate 31 can be operated through the second accommodating through hole 211.

[0042] Other configurations and operations of the lifting platform of the bonding machine according to the embodiments of the present application are known to those skilled in the art, and will not be described in detail here.

[0043] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the features limited as "first" and "second" can explicitly or implicitly include one or more of the features, which are used to distinguish the described features, and have no order or weight.

[0044] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0045] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In the description of the present specification, the description referring to the terms "embodiment", "example", and the like means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A lift table of a bonder, characterized by, The base, the table board, the connecting rod mechanism and the drive screw, the connecting rod mechanism is installed between the base and the table board, the drive screw is rotatable limited in the base, the drive screw is threaded with the connecting rod mechanism, the drive screw is used to drive the connecting rod assembly telescopic makes the table board lift; The end of the drive screw is fixed with a screw sleeve, and the base is positioned with a plurality of first elastic members, and the end of the screw sleeve abuts against the first elastic members.

2. The lift table of a bonding machine according to claim 1, wherein The first elastic member is a ball head plug column, and the end face of the screw sleeve abuts against the ball of the ball head plug column. Alternatively, the first elastic member is an elastic column, the end face of the screw sleeve abuts against the end face of the elastic column, and the end face of the screw sleeve and the end of the elastic column are in sliding fit.

3. The lift table of a bonding machine according to claim 2, wherein The base is positioned with a second elastic member, and the end of the second elastic member abuts against the drive screw.

4. The lift table of a bonding machine according to claim 1, 2 or 3, characterized by, The base is fixed with a mounting block, the first elastic member is mounted on the mounting block, the drive screw penetrates through the mounting groove of the mounting block, and the drive screw is fixed with two limiting rings, and the two limiting rings are arranged on the two sides of the mounting groove.

5. The lift table of claim 1, 2 or 3, wherein, The connecting rod mechanism includes a sliding plate and a plurality of connecting rod assemblies, each of the connecting rod assemblies is rotatably connected with the sliding plate, the table board and the base. The sliding plate and the base are in sliding fit, and the drive screw is threaded with the sliding plate.

6. The lift table of a bonding machine according to claim 5, wherein The bottom of the base is provided with a containing cavity, the sliding plate is located in the containing cavity, the base is provided with a first accommodating through hole, and the connecting rod assembly is connected to the table board after penetrating through the first accommodating through hole.

7. The lift table of a bonding machine according to claim 6, wherein The connecting rod assembly includes a first connecting rod and a second connecting rod, the bottom end of the first connecting rod is rotatably connected with the sliding plate, and the top end of the first connecting rod is rotatably connected with the table board. One end of the second connecting rod is rotatably connected with the base, and the other end is rotatably connected with the first connecting rod.

8. The lift table of a bonding machine according to claim 6, wherein The sliding plate is connected with a spring, and the end of the spring is fixed to the base.

9. The lift table of a bonding machine according to claim 6, wherein The top of the sliding plate is fixed with a connecting block through a screw, the connecting block is provided with a threaded hole, and the drive screw is inserted into the threaded hole. The table board includes a support plate and a panel, the panel is fixed to the top surface of the support plate, the support plate is provided with a second accommodating through hole, and the second accommodating through hole is opposite to the position of the connecting block.

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