Lead frame conveying mechanism

Abstract

A lead frame conveying mechanism comprises a bottom plate, a pair of side plates are installed on the bottom plate, a plurality of conveying rods are rotationally arranged on the side plates, one ends of the conveying rods are connected with synchronous wheels, the two ends of one side plate are each provided with a pair of rotating wheels, one rotating wheel is connected with a motor, the motor is fixed to the side plate, and the synchronous wheels are in transmission through a synchronous belt. The inner wall of the synchronous belt further acts on the rotating wheel, and the outer wall of the synchronous belt further clings to the periphery of the cling wheel. According to the mechanism, through synchronous transmission, the rotating synchronism of all the conveying rods can be ensured, and through the arrangement of the clinging wheels and the adjustable mode of the clinging wheels, the transmission effect of the synchronous belt and the synchronous wheels is ensured. In the conveying process, in order to ensure that the posture of the lead frame does not change, a pair of limiting guide plates is further arranged between the side plates, the conveying rods are sleeved with the limiting guide plates, and the left side and the right side of the lead frame are limited through the limiting guide plates.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of semiconductor processing especially relates to a lead frame conveying mechanism. BACKGROUND

[0002] The semiconductor needs to be transferred to the designated place through the conveying mechanism during the semiconductor processing, and then the core sticking operation is carried out, and when the lead frame is transferred again through the three-dimensional moving system, the position and posture of the lead frame need to be determined, and the conveying mechanism used at present is usually the conveying belt conveying mode, in which mode the posture of the lead frame is prone to change during the conveying process, and the thin lead frame brings inconvenience to the taking of the lead frame. And the posture of the lead frame is prone to change during the conveying process, which also brings inconvenience to the further transfer of the lead frame. SUMMARY

[0003] The utility model provides a kind of lead frame conveying mechanism to solve the deficiency of above-mentioned prior art, solve the posture of lead frame and prone to change when conveying transfer Problem, with strong practicality.

[0004] In order to realize the purpose of the utility model, the following technology is adopted:

[0005] A kind of lead frame conveying mechanism, including bottom plate, a pair of side plates are installed on bottom plate, a plurality of conveying rods are rotatably arranged on side plate, one end of conveying rod is connected with synchronous wheel, tight wheel is arranged between adjacent two synchronous wheels, the outer side end of tight wheel is provided with connecting arm, the outer side end of connecting arm is provided with moving cross plate, moving cross plate is of fold structure, a plurality of positioning screws are arranged on moving cross plate, a strip hole is formed in one of side plates, the strip hole is vertically arranged, the positioning screw is arranged in the strip hole, the outer side end of positioning screw is connected with locking nut by screw thread, locking nut acts on the outer wall of moving cross plate, one end of a pair of rotating wheels is arranged at the both ends of one of side plates, motor is connected to one of rotating wheels, motor is fixed on side plate, synchronous belt is arranged between synchronous wheels, the inner wall of synchronous belt also acts on rotating wheel, and the outer wall of synchronous belt is also tightly attached to the outer circumference of tight wheel. The mechanism is driven synchronously, which can ensure the synchronism of the rotation of each conveying rod, and the tight wheel and the adjustable tight wheel are arranged to ensure the transmission effect of the synchronous belt and the synchronous wheel. In order to further ensure the transmission effect between the synchronous belt and the rotating wheel, tight wheel can also be arranged on one side of the rotating wheel. In order to ensure that the posture of the lead frame does not change during the conveying process, a pair of limiting guide plates are arranged between the side plates, the limiting guide plates are arranged on the conveying rods, and the left and right sides of the lead frame are limited by the limiting guide plates.

[0006] Further, in order to reduce the friction force of the limiting guide plate on the lead frame, thereby improving the flexibility of the lead frame conveying, the upper end of the limiting guide plate is inwardly bent with an upper plate strip, and a plurality of limiting wheels are rotatably arranged on the upper plate strip.

[0007] Further, in order to adjust the spacing between the limiting guide plates, a pair of inner push rods are arranged on the limiting guide plates, the inner push rods are arranged through the side plates, the outer end of the inner push rod on the same side is provided with an inner push outer plate, an outer extension arm is installed on the side plate, the outer end of the outer extension arm is provided with a hinged shaft, the lower end of the hinged shaft is provided with an inner top turning plate, and the inner end of the inner top turning plate acts on the outer wall of the inner push outer plate.

[0008] Further, in order to facilitate the rotation of the inner top turning plate, the inner end of the inner top turning plate is in an arc shape.

[0009] Further, in order to facilitate the synchronous adjustment of the position of the limiting guide plate, an acting rod is arranged at the outer end of the inner top turning plate, a lower table is installed at one end of the bottom plate, a T-shaped slot is formed in an open manner on the upper wall of the lower table, a movable screw is arranged through the T-shaped slot, a concave plate is arranged at the upper end of the movable screw, a lower pressing nut is threadedly connected to the upper end of the movable screw, the lower end of the lower pressing nut acts on the concave plate, the other end of the concave plate is formed with an acting transverse plate, an acting transverse hole is formed in the acting transverse plate, the length direction of the acting transverse hole is perpendicular to the length direction of the side plate, and the acting rod is arranged through the acting transverse hole.

[0010] The above technical scheme has the following advantages:

[0011] The lead frame can be conveniently conveyed, and the posture of the lead frame can be ensured during the conveying process. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be described in further detail below with reference to the drawings.

[0013] Figure 1 A perspective structure of one embodiment is shown Figure 1 .

[0014] Figure 2 An enlarged view of A is shown.

[0015] Figure 3 An enlarged view of B is shown.

[0016] Figure 4 An enlarged view of C is shown.

[0017] Figure 5 A perspective structure of one embodiment is shown Figure 2 .

[0018] Figure 6 An enlarged view is shown at D. DETAILED DESCRIPTION

[0019] As Figures 1-6 shown, a lead frame conveying mechanism comprises a base plate 1, a pair of side plates 35 are installed on the base plate 1, a plurality of conveying rods 36 are rotatably arranged on the side plates 35, a synchronous wheel 42 is connected to one end of the conveying rod 36, a close wheel 41 is arranged between two adjacent synchronous wheels 42, a connecting arm 40 is arranged at the outer side end of the close wheel 41, a moving cross plate 39 is arranged at the outer side end of the connecting arm 40, the moving cross plate 39 is in a folded structure, a plurality of positioning screws 38 are arranged through the moving cross plate 39, a strip-shaped hole 37 is formed on one of the side plates 35, the strip-shaped hole 37 is arranged vertically, the positioning screw 38 is arranged through the strip-shaped hole 37, a locking nut is threadedly connected to the outer side end of the positioning screw 38, the locking nut acts on the outer wall of the moving cross plate 39, a pair of rotating wheels 44 are arranged at the two ends of the side plate 35, a motor 45 is connected to one of the rotating wheels 44, the motor 45 is fixed to the side plate 35, the synchronous wheels 42 are driven by a synchronous belt 43, the inner wall of the synchronous belt 43 also acts on the rotating wheel 44, and the outer wall of the synchronous belt 43 is tightly attached to the outer periphery of the close wheel 41.

[0020] A pair of limiting guide plates 32 are arranged between the side plates 35, the limiting guide plates 32 are sleeved on the conveying rods 36. The upper end of the limiting guide plate 32 is inwardly bent to form an upper plate strip 33, a plurality of limiting wheels 34 are rotatably arranged on the upper plate strip 33. A pair of inner push rods 29 are arranged on the limiting guide plate 32, the inner push rods 29 are arranged through the side plates 35, inner push outer plates 31 are arranged at the outer side ends of the inner push rods 29 located at the same side. An outer extension arm 26 is installed on the side plate 35, a hinged shaft 27 is arranged at the outer side end of the outer extension arm 26, an inner top turning plate 28 is arranged at the lower end of the hinged shaft 27, the inner side end of the inner top turning plate 28 is in an arc structure, the inner side end of the inner top turning plate 28 acts on the outer wall of the inner push outer plate 31. An action rod 25 is arranged at the outer side end of the inner top turning plate 28, a lower table 10 is installed at one end of the base plate 1, a T-shaped groove 11 is formed with an opening on the upper wall of the lower table 10, a movable screw 2 is arranged through the T-shaped groove 11, a concave plate 21 is arranged at the upper end of the movable screw 2, a lower pressing nut 20 is threadedly connected to the upper end of the movable screw 2, the lower end of the lower pressing nut 20 acts on the concave plate 21, an action cross plate 23 is formed at the other end of the concave plate 21, an action cross hole 24 is formed on the action cross plate 23, the length direction of the action cross hole 24 is perpendicular to the length direction of the side plate 35, and the action rod 25 is arranged through the action cross hole 24.

[0021] When the application is used, the processed lead frame is placed at one end between the side plates 35, and then the motor 45 is started, and the rotating wheel 44 and the synchronous belt 43 are driven to rotate under the driving of the motor 45, and the rotating process drives the rotating of each conveying rod 36, in order to improve the friction between the conveying rod 36 and the lead frame, a layer of anti-skid rubber pad can be attached on the conveying rod 36. Then, the lead frame is driven to move to the other end by the conveying rod 36 and under the limiting of the limiting guide plate 32.

[0022] When the contact effect between the synchronous belt 43 and the synchronous wheel 42 is adjusted by the close wheel 41, the locking nut is loosened first, then the adjustment is carried out, and after the adjustment is completed, the locking nut is fixed again.

[0023] When the distance between the limiting guide plates 32 is adjusted, the position of the concave plate 21 is adjusted by the operator, and in the adjusting process, the action transverse hole on the concave plate 21 acts on the action rod, so that the inner side end of the inner top rotating plate 28 is rotated, and the rotation of the inner top rotating plate 28 drives the inner push outer plate 31 to move outward or inward, so as to adjust the distance between the limiting guide plates 32, and after the adjustment, the position of the concave plate 21 is fixed by the lower pressing nut 20.

[0024] The above is only the preferred embodiment of the present application, and is not used to limit the present application, and obviously, those skilled in the art can make various modifications and changes to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and changes of the present application belong to the scope of the claims of the present application and the equivalent technology, the present application also intends to include these modifications and changes.

Claims

1. A lead frame transport mechanism characterized by, The utility model relates to a kind of automatic feeding device, including bottom plate (1), a pair of side plates (35) are installed on bottom plate (1), a plurality of conveying rods (36) are rotatably arranged on side plate (35), one end of conveying rod (36) is connected with synchronous wheel (42), abutting wheel (41) is arranged between adjacent two synchronous wheels (42), the outer side end of abutting wheel (41) is equipped with connecting arm (40), the outer side end of connecting arm (40) is equipped with moving cross plate (39), moving cross plate (39) is folded structure, a plurality of locating screw rods (38) are arranged on moving cross plate (39), strip hole (37) is formed in one of side plates (35), strip hole (37) is vertically arranged, locating screw rod (38) is arranged in strip hole (37), the outer side end of locating screw rod (38) is equipped with locking nut by screwing, locking nut acts on the outer wall of moving cross plate (39), one end of one of side plates (35) is equipped with a pair of rotating wheels (44), one of rotating wheels (44) is connected with motor (45), motor (45) is fixed on side plate (35), synchronous wheel (42) is driven by synchronous belt (43), the inner wall of synchronous belt (43) also acts on rotating wheel (44), and the outer wall of synchronous belt (43) is also tightly attached to the outer circumference of abutting wheel (41). A pair of limiting guide plates (32) are arranged between side plates (35), and the limiting guide plates (32) are sleeved on the conveying rods (36).

2. The leadframe transport mechanism of claim 1, wherein, The upper end of the limiting guide plate (32) is inwardly bent to form an upper plate strip (33), and a plurality of limiting wheels (34) are rotatably arranged on the upper plate strip (33).

3. The leadframe transport mechanism of claim 1, wherein, A pair of inner push rods (29) are arranged on the limiting guide plate (32), and the inner push rods (29) are arranged in the side plates (35). The outer side ends of the inner push rods (29) on the same side are provided with inner push outer plates (31). The side plates (35) are provided with outer extension arms (26), and the outer side ends of the outer extension arms (26) are provided with hinged shafts (27). The lower ends of the hinged shafts (27) are provided with inner top turning plates (28), and the inner side ends of the inner top turning plates (28) act on the outer walls of the inner push outer plates (31).

4. The leadframe transport mechanism of claim 3, wherein, The inner side end of the inner top turning plate (28) is in an arc shape.

5. The leadframe transport mechanism of claim 3, wherein, The outer side end of the inner top turning plate (28) is provided with an action rod (25). One end of the bottom plate (1) is provided with a lower table (10), and the upper wall of the lower table (10) is open and formed with a T-shaped groove (11). The T-shaped groove (11) is arranged with a movable screw (2). The upper end of the movable screw (2) is provided with a concave plate (21). The upper end of the movable screw (2) is provided with a lower pressing nut (20) by screwing. The lower end of the lower pressing nut (20) acts on the concave plate (21). The other end of the concave plate (21) is formed with an action cross plate (23). The action cross plate (23) is provided with an action cross hole (24). The length direction of the action cross hole (24) is perpendicular to the length direction of the side plate (35). The action rod (25) is arranged in the action cross hole (24).

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