IC (integrated circuit) trimming material strip stepping transfer device

Abstract

The utility model discloses an IC (integrated circuit) rib cutting material strip stepping transfer device, and belongs to the field of IC material strip rib cutting. The IC bar cutting material strip stepping transferring device comprises a bottom plate fixed to one side of a bar cutting machine, a mounting frame capable of doing reciprocating motion along an IC material strip is arranged on the bottom plate, and two clamping plates capable of synchronously and reversely sliding are arranged on the mounting frame and can clamp the IC material strip; a limiting groove is fixed to the upper end of the bottom plate, and the IC material strip is matched with the limiting groove. A pressing plate assembly is arranged on the limiting groove, the pressing plate assembly comprises a fixing frame fixed to the upper end of the limiting groove, an air cylinder is arranged on the fixing frame, a pressing plate is fixed to the tail end of a driving shaft of the air cylinder, and the pressing plate can tightly press the IC material strip in the limiting groove; by arranging the clamping plate and the pressing plate, after the IC material strip moves in place, the clamping plate loosens the clamping effect on the IC material strip, at the moment, the pressing plate can press and fix the IC material strip, and the situation that the stepping movement precision and the rib cutting precision are affected due to displacement of the IC material strip is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of IC strip lead cutting, and particularly relates to a stepping transfer device for IC lead cutting strips. Background Art

[0002] IC strip lead cutting is an important link in the IC packaging process. It mainly uses a lead cutting machine to precisely cut the IC strip to achieve the purpose of sorting and shaping. The lead cutting process can not only improve production efficiency but also ensure the quality and performance of products. The lead cutting machine usually includes a lower die, an upper die, a lead cutting cylinder assembly, etc. During operation, the IC strip is sorted and lead cut through the lead cutting cylinder assembly between the upper die and the lower die.

[0003] Meanwhile, during the IC strip lead cutting process, the IC strip needs to be stepped and transferred. After the IC strip completes one transfer, before the next shift of the IC strip, the IC strip cannot shift, otherwise it will lead to insufficient stepping transfer accuracy, thus affecting the lead cutting accuracy. For this reason, a stepping transfer device for IC lead cutting strips is proposed. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a stepping transfer device for IC lead cutting strips, which solves the problems in the prior art.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] A stepping transfer device for IC lead cutting strips includes a bottom plate fixed on one side of the lead cutting machine. An installation frame capable of reciprocating along the IC strip is arranged on the bottom plate. Two clamping plates capable of synchronously sliding in opposite directions are arranged on the installation frame and can clamp the IC strip.

[0007] A limiting groove is fixed at the upper end of the bottom plate, and the IC strip cooperates with the limiting groove. A pressing plate assembly is arranged on the limiting groove. The pressing plate assembly includes a fixing frame fixed at the upper end of the limiting groove. A cylinder is arranged on the fixing frame. The end of the driving shaft of the cylinder is fixed with a pressing plate, and the pressing plate can press the IC strip in the limiting groove. After the IC strip moves in place, the clamping plates release the clamping effect on the IC strip. At this time, the pressing plate can press and fix the IC strip to prevent the IC strip from shifting and affecting the stepping movement accuracy and lead cutting accuracy.

[0008] Furthermore, both of the two clamping plates are slidably connected to the installation frame. Two first fixing plates are arranged on the installation frame. A rotatable first lead screw is arranged between the two first fixing plates. The two ends of the first lead screw are respectively provided with a first external thread and a second external thread with opposite helix directions and equal pitches. The first external thread and the second external thread respectively penetrate through the two clamping plates and are threadedly connected thereto.

[0009] Further, the lead angles of the first external thread and the second external thread are both smaller than the equivalent friction angle.

[0010] Further, a reciprocating driving mechanism is provided at the upper end of the base plate. The reciprocating driving mechanism includes a driving motor fixed to the upper end of the base plate, and a connecting component is fixed on the driving shaft of the driving motor; the mounting frame is slidably connected to the base plate along the length direction of the IC strip. A connecting seat is provided on one side of the mounting frame, a connecting rod is hinged to the connecting seat, a connecting shaft is fixed to the end of the connecting rod away from the connecting seat, and one end of the connecting component is rotatably connected to the connecting shaft.

[0011] Further, the connecting component includes a fixed rod fixedly connected to the driving shaft of the driving motor. A sliding rod is provided on the fixed rod, and the sliding rod is rotatably connected to the connecting shaft; moreover, the relative position between the sliding rod and the fixed rod is slidably adjustable.

[0012] Further, the sliding rod is slidably connected to the fixed rod, and the sliding direction is parallel to the length direction of the fixed rod. A connecting plate is provided on the sliding rod, and two second fixing plates are provided on the fixed rod. A second lead screw is rotatably connected between the two second fixing plates, and the second lead screw passes through the connecting plate and is threadedly connected thereto.

[0013] Further, the lead angle of the second lead screw is smaller than the equivalent friction angle.

[0014] Further, a telescopic rod is provided on the fixed rod to directly drive the sliding rod to slide.

[0015] Advantages of the utility model:

[0016] 1. By providing a limiting groove to limit and guide the IC strip, and providing a clamping component on the base plate that can reciprocate to clamp the IC strip, and coordinating with the clamping and loosening timing of the upper clamping plate, the step movement of the IC strip is realized to facilitate lead cutting; and by providing a pressing plate component on the limiting groove to press the IC strip in the limiting groove; so that after the IC strip moves in place, the clamping plate releases the clamping effect on the IC strip, and at this time the pressing plate can press and fix the IC strip to prevent the IC strip from shifting, affecting the accuracy of step movement and lead cutting accuracy.

[0017] 2. By providing a connecting component in the reciprocating driving mechanism and setting the connecting component to be adjustable in length, the step distance of the IC strip is adjusted, so as to adapt to IC strips of different specifications for lead cutting tasks. Description of the drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the transfer device of the present invention;

[0020] Figure 2 It is a schematic diagram of the clamping component structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the first lead screw structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the pressure plate component structure of the present invention;

[0023] Figure 5 It is a schematic diagram of the reciprocating drive mechanism structure of the present invention;

[0024] Figure 6 It is a schematic diagram of the connection component structure of the present invention. Detailed implementation manners

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] As Figure 1 shown, the IC lead frame strip step transfer device includes a bottom plate 1, and the bottom plate 1 is fixed on the frame of the lead frame cutting machine. The transfer device steps the IC lead frame strip into the lead frame cutting machine for lead frame cutting; a limiting groove 2 is fixed at the upper end of the bottom plate 1, and the IC lead frame strip is located in the limiting groove 2 and cooperates with it, playing a role of guiding and limiting the step movement of the IC lead frame strip;

[0027] A clamping component 3 is arranged at the upper end of the bottom plate 1. The clamping component 3 can clamp the IC lead frame strip and drive the IC lead frame strip to move; as Figure 2 shown, the clamping component 3 includes a mounting frame 31 that can reciprocally slide along the length direction of the IC lead frame strip at the upper end of the bottom plate 1. Two clamping plates 32 that can slide synchronously and in opposite directions are arranged on the mounting frame 31. The two clamping plates 32 approaching synchronously can realize the clamping and fixing of the IC lead frame strip and drive the IC lead frame strip to move;

[0028] The steps of driving the IC strip to move step by step by using the clamping assembly 3 are as follows:

[0029] Step 1: Clamp the IC strip by controlling the two clamping plates 32 to approach each other, and then control the mounting frame 1 to approach the lead frame cutting position and move into place;

[0030] Step 2: After reaching the position, control the two clamping plates 32 to move away from each other to release the clamping of the IC strip, and then control the mounting frame 31 to retract to the initial position;

[0031] Step 3: After one lead frame cutting is completed, repeat Step 1 and Step 2 to realize the step-by-step movement of the IC strip and perform multiple lead frame cuttings in sequence.

[0032] In this embodiment, both of the two clamping plates 32 are slidably connected to the mounting frame 31. Two first fixing plates are provided on the mounting frame 31. A first lead screw 33 is rotatably connected between the two first fixing plates. As Figure 3 shown, the two ends of the first lead screw 33 are respectively provided with a first external thread 331 and a second external thread 332 with opposite helix directions and equal pitches. The first external thread 331 and the second external thread 332 respectively penetrate through the two clamping plates 32 and are threadedly connected thereto. By providing a motor on one of the first fixing plates to drive the first lead screw 33 to rotate, the two clamping plates 32 can be synchronously and reversely slid;

[0033] Moreover, in order to ensure the stability of the clamping of the IC strip by the two clamping plates 32, the first lead screw 33 needs to have self-locking property, that is, the helix angles of the first external thread 331 and the second external thread 332 are both smaller than the equivalent friction angle.

[0034] Of course, the method of driving the two clamping plates 32 to approach synchronously includes but is not limited to the structure of the first lead screw 33 in this embodiment. In some embodiments, two telescopic rods or hydraulic cylinders can also be provided on the mounting frame 31 to respectively drive the two clamping plates 32 to synchronously and reversely slide.

[0035] A pressing plate assembly 4 is provided at the upper end of the limiting groove 2. As Figure 4 shown, the pressing plate assembly 4 includes a fixing frame 41 fixed to the upper end of the limiting groove 2. A cylinder 42 is fixed on the fixing frame 41. A pressing plate 43 is fixed to the end of the driving shaft of the cylinder 42. Driven by the cylinder 42, the pressing plate 43 can descend and press the IC strip in the limiting groove 2; so that after the IC strip moves into place, the clamping plates 32 release the clamping effect on the IC strip. At this time, the pressing plate 43 can press and fix the IC strip to prevent the IC strip from shifting, affecting the accuracy of the step-by-step movement and the lead frame cutting accuracy.

[0036] A reciprocating driving mechanism 5 is provided at the upper end of the bottom plate 1 to drive the mounting frame 31 to reciprocate along the length direction of the IC strip; As Figure 5As shown in the figure, the reciprocating drive mechanism 5 includes a drive motor 51 fixed to the upper end of the base plate 1, and a connection assembly 52 is fixed on the drive shaft of the drive motor 51; the mounting bracket 31 is slidably connected to the base plate 1 along the length direction of the IC strip, and a connection seat 311 is provided on one side of the mounting bracket 31. A connecting rod 53 is hinged to the connection seat 311, and a connecting shaft 54 is fixed to the end of the connecting rod 53 away from the connection seat 311. One end of the connection assembly 52 is rotatably connected to the connecting shaft 54; so that under the drive of the drive motor 51, the mounting bracket 31 can reciprocate along the length direction of the IC strip to realize the step-by-step transfer of the IC strip.

[0037] As Figure 6 shown in the figure, the connection assembly 52 includes a fixed rod 521 fixedly connected to the drive shaft of the drive motor 51. A sliding rod 522 is arranged on the fixed rod 521, and the sliding rod 522 is rotatably connected to the connecting shaft 54; moreover, the relative position between the sliding rod 522 and the fixed rod 521 is slidably adjustable, so as to realize the adjustment of the total length of the connection assembly 52, so as to adjust the reciprocating movement distance of the mounting bracket 31 (that is, the distance between the two extreme end points of the reciprocating movement), and then adjust the step distance of the IC strip, so as to apply IC strips of different specifications for the task of cutting the leads.

[0038] In this embodiment, the sliding rod 522 is slidably connected to the fixed rod 521, and the sliding direction is parallel to the length direction of the fixed rod 521. A connecting plate 5221 is arranged on the sliding rod 522, and two second fixing plates 5211 are arranged on the fixed rod 521. A second lead screw 523 is rotatably connected between the two second fixing plates 5211. The second lead screw 523 passes through the connecting plate 5221 and is threadedly connected to it. By arranging a motor on one of the second fixing plates 5211 to drive the second lead screw 523 to rotate, the relative position between the sliding rod 522 and the fixed rod 521 can be adjusted to achieve the purpose of adjusting the total length of the connection assembly 52;

[0039] Moreover, in order to ensure that the relative position between the sliding rod 522 and the fixed rod 521 remains stable after adjustment, the second lead screw 523 needs to have self-locking property, that is, the thread lead angle of the second lead screw 523 is less than the equivalent friction angle.

[0040] Of course, the method of adjusting the relative distance between the sliding rod 522 and the fixed rod 521 includes but is not limited to the structure of the second lead screw 523 in this embodiment. In some embodiments, the sliding rod 522 can also be directly driven to slide by arranging a telescopic rod, a hydraulic cylinder and other linear driving components on the fixed rod 521, and the relative position between the two can also be adjusted.

[0041] Working principle:

[0042] By setting the limit groove 2 to limit and guide the IC strip, and arranging a reciprocating sliding clamping component 3 on the bottom plate 1 to clamp the IC strip, and coordinating with the clamping and releasing timing of the upper clamping plate 32, the step movement of the IC strip is realized to facilitate lead cutting; and by arranging a pressing plate component 4 on the limit groove 2 to press the IC strip in the limit groove 2; so that after the IC strip moves in place, the clamping plate 32 releases the clamping effect on the IC strip, and at this time the pressing plate 43 can press and fix the IC strip to prevent the IC strip from shifting and affecting the accuracy of step movement and lead cutting accuracy. By arranging a connecting component 52 in the reciprocating driving mechanism 5 and setting the connecting component 52 to have an adjustable length, the step distance of the IC strip is adjusted, so as to adapt to IC strips of different specifications for lead cutting tasks.

[0043] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean 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 invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An IC cutting material strip stepping and conveying device, comprising a bottom plate (1) fixed to one side of a cutting machine, characterized in that: A mounting frame (31) capable of reciprocating along the IC material strip is arranged on the bottom plate (1); two clamping plates (32) capable of synchronously sliding in opposite directions are arranged on the mounting frame (31) and can clamp the IC material strip; A limiting groove (2) is fixed at the upper end of the bottom plate (1), and the IC material strip cooperates with the limiting groove (2); a pressing plate assembly (4) is arranged on the limiting groove (2), and the pressing plate assembly (4) comprises a fixing frame (41) fixed at the upper end of the limiting groove (2); a cylinder (42) is arranged on the fixing frame (41), and a pressing plate (43) is fixed at the end of the driving shaft of the cylinder (42); the pressing plate (43) can press the IC material strip tightly into the limiting groove (2).

2. The IC cutting bar material step-by-step transfer device according to claim 1, characterized in that: The two clamping plates (32) are both slidably connected to the mounting frame (31), and two first fixing plates are arranged on the mounting frame (31). A rotatable first screw rod (33) is arranged between the two first fixing plates, and two ends of the first screw rod (33) are respectively provided with a first external thread (331) and a second external thread (332) with opposite rotation directions and equal pitches, and the first external thread (331) and the second external thread (332) respectively penetrate the two clamping plates (32) and are threadedly connected thereto.

3. The IC cutting bar material step-by-step transfer device according to claim 2, characterized in that: The thread lead angles of the first external thread (331) and the second external thread (332) are both smaller than the equivalent friction angle.

4. The IC cutting bar material step-by-step transfer device according to claim 1, characterized in that: A reciprocating drive mechanism (5) is arranged at the upper end of the base plate (1), and the reciprocating drive mechanism (5) comprises a drive motor (51) fixed at the upper end of the base plate (1), and a connecting assembly (52) is fixed on the drive shaft of the drive motor (51); the mounting frame (31) is slidably connected to the base plate (1) along the length direction of the IC material strip, a connecting seat (311) is arranged on one side of the mounting frame (31), a connecting rod (53) is hinged on the connecting seat (311), a connecting shaft (54) is fixed on one end of the connecting rod (53) away from the connecting seat (311), and one end of the connecting assembly (52) is rotatably connected to the connecting shaft (54).

5. The IC cutting bar material step-by-step conveying device according to claim 4, characterized in that: The connecting assembly (52) comprises a fixed rod (521) fixedly connected to the driving shaft of the driving motor (51); a sliding rod (522) is arranged on the fixed rod (521); the sliding rod (522) is rotatably connected to the connecting shaft (54); and the relative position between the sliding rod (522) and the fixed rod (521) is slidably adjustable.

6. The IC cutting bar material step-by-step transfer device according to claim 5, characterized in that: The sliding rod (522) is slidably connected to the fixed rod (521), and the sliding direction is parallel to the length direction of the fixed rod (521). The sliding rod (522) is provided with a connecting plate (5221), and the fixed rod (521) is provided with two second fixing plates (5211). A second screw rod (523) is rotatably connected between the two second fixing plates (5211), and the second screw rod (523) passes through the connecting plate (5221) and is threadedly connected thereto.

7. The IC cutting bar material step-by-step conveying device according to claim 6, characterized in that: The thread lead angle of the second screw rod (523) is smaller than the equivalent friction angle.

8. The IC cutting bar material step-by-step conveying device according to claim 5, characterized in that: The fixed rod (521) is provided with a telescopic rod to directly drive the sliding rod (522) to slide.

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