Lead frame with boss grid and processing device thereof

Abstract

The utility model relates to the technical field of SMD (Surface Mount Device) solid core welding, in particular to a lead frame with boss grids and a processing device thereof, which comprises an upper frame and a lower frame, the lower frame comprises a lower frame body, lower pins and a lower boss, the lower frame body is provided with a plurality of lower pins along the longitudinal direction, the plurality of lower pins are arranged in two rows, and the lower boss is arranged on the lower frame body. The plurality of lower pins in each column are arranged at equal intervals, and each lower pin is provided with a lower boss. By changing the plane contact surface of the lead frame into the contact surface with the boss grids, the soldering tin attachment surface and the soldering tin pulling force can be effectively increased, the situation that a tiny gap exists between the two contact surfaces is effectively reduced, good contact between each lower boss and the ceramic electrode and between each upper boss and the ceramic electrode is ensured, and the reliability and the yield of products are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to SMD solid core welding technical field especially, lead frame with boss grid and its processing device. BACKGROUND

[0002] Lead frame as the chip carrier of integrated circuit is a kind of key structural member that realizes the electrical connection of chip internal circuit lead-out end and external lead wire by bonding alloy material (silver, copper and alloy material), forms electrical circuit, and it plays the role of bridge connecting with external wire.

[0003] In prior art, the contact surface of lead frame welding point is usually plane, and the tin flow is difficult to position when welding for the plane contact surface, and it can cause insufficient solder adhesion surface and solder tension, further cause the existence of tiny gap between welding place and ceramic electrode, appear the situation of poor welding tension, or there is gap between ceramic electrode and metal, appear the situation of poor discharge arc.

[0004] In order to solve the problem caused by the plane contact surface of lead frame welding point, the utility model provides a lead frame with boss grid.

[0005] And in order to improve the production efficiency of lead frame with boss grid, the utility model further provides a processing device of lead frame with boss grid. INNOVATION CONTENT

[0006] In order to overcome the defects in prior art, the utility model provides a lead frame with boss grid and its processing device.

[0007] Technical scheme as follows: a lead frame with boss grid, comprising upper frame and lower frame, the upper frame comprises upper frame body, upper pin and upper boss, the upper frame body is provided with a plurality of upper pins along the longitudinal direction, and the plurality of upper pins are arranged into two columns, and the plurality of upper pins in each column are arranged at equal intervals, and each upper pin is provided with an upper boss, the lower frame comprises lower frame body, lower pin and lower boss, the lower frame body is provided with a plurality of lower pins along the longitudinal direction, and the plurality of lower pins are arranged into two columns, and the plurality of lower pins in each column are arranged at equal intervals, and each lower pin is provided with a lower boss.

[0008] Optionally, the upper boss and the lower boss are both grid-shaped convex structures, the directions of the end portions of the upper pins in the same longitudinal column are same, the directions of the end portions of the upper pins in adjacent longitudinal columns are opposite, the directions of the end portions of the lower pins in the same longitudinal column are also same, and the directions of the end portions of the lower pins in adjacent longitudinal columns are also opposite.

[0009] Optionally, a processing device of a lead frame with a boss grid is used for processing a lower frame of a lead frame with a boss grid, comprising a punching table, a sliding channel, a supporting block, a supporting frame, a punching frame, a punching seat and a protruding block. The supporting block is slidably connected in the sliding channel of the punching table and is used for supporting a lower pin to facilitate punching a lower boss thereon. The supporting frame is fixedly connected on the punching table and the punching frame is slidably connected on the supporting frame. The punching seat is fixedly connected on the punching seat and the punching seat and the supporting block correspond to each other. The protruding block is fixedly connected on the punching seat and the punching seat and the protruding block are used for punching the shape of the lower boss on the lower pin.

[0010] Optionally, the device further comprises a connecting rod and a resisting block for controlling the lifting of the supporting block to facilitate discharging. The connecting rod is slidably connected on the punching table and the resisting block is fixedly connected on the connecting rod. The resisting block and the supporting block are in extrusion fit, so that the supporting block can be moved upward to support the lower pin.

[0011] Optionally, the device further comprises a first positioning mechanism for transverse positioning. The first positioning mechanism is connected with the resisting block and comprises a guide rod, a spring and a positioning push plate. The guide rod is fixedly connected on the resisting block, the spring is sleeved on the guide rod, and the positioning push plate is slidably connected on the guide rod. The guide rod can push the positioning push plate through the spring.

[0012] Optionally, the device further comprises a second positioning mechanism for forward and backward positioning. The second positioning mechanism is connected with the punching frame and comprises a fixing frame, a fixing column, a positioning support rod, a hinged rod, a positioning clamping plate, a second guide rod and a second spring. The fixing column is fixedly connected on the supporting frame through the fixing frame, the positioning support rod is fixedly connected on the fixing column, one end of the hinged rod is rotatably connected on the positioning support rod, the other end of the hinged rod is rotatably connected on the positioning clamping plate, the second guide rod is slidably connected on the punching frame for horizontally guiding the positioning clamping plate. When the punching frame is lifted, the positioning clamping plate will move under the action of the hinged rod. The second spring is sleeved on the second guide rod to provide a restoring force for the positioning clamping plate.

[0013] Optionally, the device further comprises a transmission mechanism for driving the punching frame to lift. The transmission mechanism is installed on the punching table and comprises a transmission disc, a transmission rod, a transmission plate, a pressure frame and a third spring. The transmission disc is rotatably connected on the punching table, one end of the transmission rod is rotatably connected on the transmission disc, the other end of the transmission rod is rotatably connected on the transmission plate, the transmission plate is slidably connected on the supporting frame, the transmission disc will drive the transmission plate to move upward or downward through the transmission rod when the transmission disc is rotated, the pressure frame is slidably connected on the transmission plate, the third spring is sleeved on the pressure frame, and the lower end of the pressure frame is fixedly connected with the supporting frame.

[0014] Optionally, the driving mechanism for driving the pushing frame, the transmission disc and the driven disc is further included, the driving mechanism comprises a driving support, a lead screw, a driving guide rod, an internal thread frame, a driving rod, a No.

[0015] Optionally, the feeding mechanism for feeding the lower frame body is further included, the feeding mechanism is connected with the stamping table, and the feeding mechanism comprises a feeding seat, a pushing frame, a pushing block, a No.

[0016] Optionally, the driving mechanism for driving the pushing frame, the transmission disc and the driven disc is further included, the driving mechanism comprises a driving support, a lead screw, a driving guide rod, an internal thread frame, a driving rod, a No.

[0017] Compared with the prior art, the lead frame has the following advantages: the planar contact surface of the lead frame is changed into the contact surface with the boss grid, the solder adhesion surface and the solder tension are effectively increased, the case that there is a slight gap between the two contact surfaces is effectively reduced, good contact is ensured between each lower boss, the upper boss and the ceramic electrode, and the reliability and the yield of the product are improved.

[0018] The processing device can automatically feed, position, stamp and discharge the lower frame, and realizes automatic processing and production of the lower frame with the boss grid.

[0019] The abutment block can control the movement of the supporting block through extrusion, so that the supporting block can support and limit the lower frame during stamping, preventing displacement of the lower frame during stamping, and automatically moving away from the lower frame after stamping is completed to facilitate feeding and discharging;

[0020] The supporting block can drive the positioning push plate to position the lower frame in the left-right direction through the first guide rod and the first spring during movement, and the positioning clamping plate can position the lower frame in the front-rear direction during downward movement of the stamping frame for stamping, preventing reduction of product quality or appearance of scrap due to inaccurate placement of the lower frame;

[0021] The control rod, the fifth spring and the control plate can automatically control the lifting of the pushing block, so that the pushing block can push the lower frame on the feeding seat during movement close to the stamping table, and the pushing block does not contact the lower frame on the feeding seat during movement away from the stamping table, realizing the function of automatic pushing and feeding, and the function of automatic discharging can be realized by pushing the last stamped lower frame away from the stamping table during pushing. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a lead frame overall structure schematic view of the utility model.

[0023] Figure 2 It is a lead frame combination state schematic view of the utility model.

[0024] Figure 3 It is a machining device overall structure schematic view of the utility model.

[0025] Figure 4 It is a support frame and material box section structure schematic view of the utility model.

[0026] Figure 5 It is a stamping frame position relation schematic view of the utility model.

[0027] Figure 6 It is a transmission disc position relation schematic view of the utility model.

[0028] Figure 7 It is a driven disc position relation schematic view of the utility model.

[0029] Figure 8 It is a positioning clamping plate position relation schematic view of the utility model.

[0030] Figure 9 It is a driving rod connection relation schematic view of the utility model.

[0031] Figure 10 It is a pushing block position relation schematic view of the utility model.

[0032] Markings in the drawings: 1, lower frame, 101, lower pin, 102, lower boss, 2, upper frame, 201, upper pin, 202, upper boss, 3, punching table, 301, slide, 302, supporting block, 303, support frame, 304, punching frame, 305, punching seat, 306, protruding block, 4, connecting rod, 401, abutting block, 5, No. 1 guide rod, 501, No. 1 spring, 502, positioning push plate, 6, fixing frame, 601, fixing column, 602, positioning support rod, 603, hinged rod, 604, positioning clamping plate, 605, No. 2 guide rod, 606, No. 2 spring, 7, transmission disc, 701, transmission rod, 702, transmission plate, 703, pressure frame, 704, No. 3 spring, 8, feeding seat, 801, driving support, 802, lead screw, 803, driving guide rod, 804, internal thread frame, 805, driving rod, 806, No. 4 spring, 807, pushing frame, 808, pushing block, 809, No. 5 spring, 810, control rod, 811, control plate, 812, material box, 9, driven disc, 901, driven pull rod, 902, driven shaft, 903, secondary rack, 904, secondary gear, 10, main rack, 11, main gear, 12, driving shaft, 13, motor, 14, ceramic electrode. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] Embodiment 1: a lead frame with boss grid, as shown in Figure 1 and Figure 2 , comprising an upper frame and a lower frame, the upper frame comprising an upper frame body 2, upper pins 201 and upper bosses 202, 10 upper pins 201 are arranged on the upper frame body 2 in the longitudinal direction, and every 5 upper pins 201 are arranged in a column at equal intervals, two columns of upper pins 201 are symmetrically arranged on the two longitudinally extending frame edges of the upper frame body 2, and each upper pin 201 is provided with an upper boss 202 on the side away from the frame edge of the upper frame body 2, the lower frame comprises a lower frame body 1, lower pins 101 and lower bosses 102, the lower frame body 1 is mainly in the shape of an I-beam, 10 lower pins 101 are arranged on the lower frame body 1 in the longitudinal direction, and every 5 lower pins 101 are arranged in a column at equal intervals, two columns of lower pins 101 are symmetrically arranged on the longitudinally extending frame of the lower frame body 1, and each lower pin 101 is provided with a lower boss 102 on the side away from the frame of the lower frame body 1, the upper boss 202 and the lower boss 102 are both in the shape of a grid-shaped protruding structure.

[0035] The upper pins 201 of the same column have the same direction, the upper pins 201 of the adjacent columns have the opposite direction, the lower pins 101 of the same column have the same direction, and the lower pins 101 of the adjacent columns have the opposite direction.

[0036] The combination of the upper frame and the lower frame is used as shown in Figure 2 The upper frame is below the lower frame, the upper protrusions 202 of the upper frame are welded with the upper ends of the ceramic electrodes 14, and the lower protrusions 102 of the lower frame are welded with the lower ends of the ceramic electrodes 14.

[0037] Based on the embodiment 1, a processing device of a lead frame with a protrusion grid is shown in Figures 3-8 The processing device comprises a punching table 3, slides 301, supporting blocks 302, a supporting frame 303, a punching frame 304, a punching seat 305, and protrusions 306. Ten slides 301 are longitudinally arranged on the punching table 3, and every five slides 301 are arranged as a column. The supporting blocks 302 are vertically connected in each slide 301. The supporting blocks 302 of the same column have the same direction, and the supporting blocks 302 of the adjacent columns have the opposite direction. The supporting blocks 302 are used to support the lower pins 101 to facilitate the punching of the lower protrusions 102. The upper end of the supporting block 302 is provided with a groove. The lower pins 101 are placed in the groove to prevent displacement during punching. The supporting frame 303 is fixed on the upper end of the punching table 3. The punching frame 304 is vertically connected on the supporting frame 303. Ten punching seats 305 are longitudinally fixed on the lower end of the punching frame 304, and every five punching seats 305 are arranged as a column. Each punching seat 305 is above the position of a supporting block 302. The square protrusions 306 are fixed on the lower end of the punching seat 305. The punching seat 305 and the protrusions 306 are used to punch the shape of the lower protrusions 102 on the lower pins 101.

[0038] The lower frame to be punched is placed on the punching table 3. Then the supporting blocks 302 are controlled to move upward, so that the supporting blocks 302 are supported below the lower pins 101, and the lower pins 101 are located in the grooves on the supporting blocks 302 to prevent displacement during punching. Then the punching frame 304 is controlled to move downward, so that the punching frame 304 drives the punching seats 305 to move downward, and the punching seats 305 and the protrusions 306 punch the shape of the lower protrusions 102 on the lower pins 101. Then the punching seats 305 are controlled to reset upward, and the supporting blocks 302 are controlled to reset downward to push the punched lower frame out of the punching table 3.

[0039] As shown in Figure 6As shown, the device further comprises the engaging rods 4 and the abutting blocks 401 for controlling the lifting of the supporting blocks 302 to facilitate the discharging. The two engaging rods 4 are symmetrically and slidingly connected to the punching table 3, and the engaging rods 4 slide in the horizontal direction. Five abutting blocks 401 are equidistantly and fixedly connected to each of the engaging rods 4. Each of the abutting blocks 401 corresponds to the position of one of the supporting blocks 302. The end of the abutting block 401 and the supporting block 302 that are in contact is an inclined surface. During the process that the abutting block 401 approaches the supporting block 302, the abutting block 401 will extrude the supporting block 302 upward through the inclined surface, so that the supporting block 302 moves upward to support the lower pin 101.

[0040] The movement of the engaging rods 4 can drive the five abutting blocks 401 on the engaging rods 4 to move synchronously. When the two engaging rods 4 move relative to each other, the abutting blocks 401 will extrude the supporting blocks 302 upward. When the two engaging rods 4 move away from each other, the abutting blocks 401 will gradually cancel the extrusion, so that the supporting blocks 302 can move downward to reset.

[0041] As shown in Figure 3 and Figure 6 , the device further comprises a first positioning mechanism for lateral positioning. The first positioning mechanism is connected to the abutting blocks 401. The first positioning mechanism comprises a guide rod 5, a spring 501 and a positioning push plate 502. The guide rod 5 is fixedly connected to the two abutting blocks 401 in the same longitudinal column and located at the outermost side. The guide rod 5 is located on the side of the abutting block 401 away from the supporting block 302. The spring 501 is sleeved on the guide rod 5. The positioning push plate 502 is slidingly connected to the guide rod 5 in the horizontal direction. The positioning push plate 502 is located between the spring 501 and the abutting block 401. The positioning push plate 502 is slidingly connected to the support frame 303 in the horizontal direction through the guide rod.

[0042] The movement of the abutting blocks 401 can drive the guide rod 5 to move synchronously. During the relative movement of the two engaging rods 4, the guide rod 5 can push the positioning push plate 502 to approach the lower frame 1 through the spring 501. Through the positioning push plates 502 on both sides, the positioning effect on the lower frame can be achieved, so as to prevent the position of the lower frame in the left-right direction from deviating, so that the lower pin 101 of the lower frame can move into the groove formed in the supporting block 302.

[0043] As shown in Figure 3 , Figure 5 and Figure 8As shown, the second positioning mechanism for front and back positioning is further included, the second positioning mechanism is connected with the punching frame 304, the second positioning mechanism includes a fixed frame 6, a fixed column 601, a positioning support rod 602, a hinged rod 603, a positioning clamping plate 604, a No. 2 guide rod 605 and a No. 2 spring 606, the fixed frame 6 is fixedly connected to the support frame 303, the fixed frame 6 is X-shaped, the fixed column 601 is fixedly connected to the fixed frame 6, two positioning support rods 602 are symmetrically fixedly connected to the fixed column 601, two groups of hinged rods 603 are rotatably connected to each positioning support rod 602, each group of hinged rods 603 has two, the two groups of hinged rods 603 are distributed in an inverted V shape, the positioning clamping plate 604 is rotatably connected to the end of each group of hinged rods 603 away from the positioning support rod 602, two groups of No. 2 guide rods 605 are slidingly connected to the punching frame 304 in the horizontal direction, each group of No. 2 guide rods 605 has two, each group of No. 2 guide rods 605 is slidingly connected to the two positioning clamping plates 604 on the same side, the No. 2 guide rod 605 is used for guiding the positioning clamping plate 604, so that the two positioning clamping plates 604 can move horizontally along the No. 2 guide rod 605, and two No. 2 springs 606 are sleeved on each No. 2 guide rod 605, the two positioning clamping plates 604 on the same No. 2 guide rod 605 will compress the No. 2 spring 606 when moving relative to each other.

[0044] The punching frame 304 will drive the positioning clamping plate 604 to move downward synchronously through the No. 2 guide rod 605 during the downward movement of the punching frame 304, since the positioning support rod 602 is fixed on the fixed column 601 and cannot move downward, during the downward movement of the positioning clamping plate 604, the hinged rod 603 will also drive the two positioning clamping plates 604 to move relative to each other, so that the positioning clamping plate 604 can approach the lower leg 101 from both sides, in order to position the lower frame in the front and back directions, so that the lower leg 101 of the lower frame can move into the groove formed on the supporting block 302, and the No. 2 spring 606 will be compressed; during the upward movement of the punching frame 304, the positioning clamping plate 604 will move upward through the No. 2 guide rod 605, and the positioning clamping plate 604 will move away from the lower leg 101 under the action of the hinged rod 603 and the No. 2 spring 606, in order to facilitate discharging.

[0045] In the embodiment 2, the second positioning mechanism for front and back positioning is further included, the second positioning mechanism is connected with the punching frame 304, the second positioning mechanism includes a fixed frame 6, a fixed column 601, a positioning support rod 602, a hinged rod 603, a positioning clamping plate 604, a No. 2 guide rod 605 and a No. 2 spring 606, the fixed frame 6 is fixedly connected to the support frame 303, the fixed frame 6 is X-shaped, the fixed column 601 is fixedly connected to the fixed frame 6, two positioning support rods 602 are symmetrically fixedly connected to the fixed column 601, two groups of hinged rods 603 are rotatably connected to each positioning support rod 602, each group of hinged rods 603 has two, the two groups of hinged rods 603 are distributed in an inverted V shape, the positioning clamping plate 604 is rotatably connected to the end of each group of hinged rods 603 away from the positioning support rod 602, two groups of No. 2 guide rods 605 are slidingly connected to the punching frame 304 in the horizontal direction, each group of No. 2 guide rods 605 has two, each group of No. 2 guide rods 605 is slidingly connected to the two positioning clamping plates 604 on the same side, the No. 2 guide rod 605 is used for guiding the positioning clamping plate 604, so that the two positioning clamping plates 604 can move horizontally along the No. 2 guide rod 605, and two No. 2 springs 606 are sleeved on each No. 2 guide rod 605, the two positioning clamping plates 604 on the same No. 2 guide rod 605 will compress the No. 2 spring 606 when moving relative to each other. Figure 3 and Figure 8As shown, the transmission mechanism for driving the punching frame 304 to lift is installed on the punching table 3, and the transmission mechanism comprises a transmission disc 7, a transmission rod 701, a transmission plate 702, a pressure frame 703 and a third spring 704. Two transmission discs 7 are symmetrically and rotatably connected to the lower side of the punching table 3. One end of the transmission rod 701 is rotatably connected to the eccentric position of the transmission disc 7. The other end of the transmission rod 701 is rotatably connected to the transmission plate 702. The transmission plate 702 is slidably connected to the support frame 303 in the vertical direction. The pressure frame 703 is slidably connected to the transmission plate 702 in the vertical direction. The third spring 704 is sleeved on the pressure frame 703. The lower end of the pressure frame 703 is fixedly connected to the support frame 303. When the transmission plate 702 moves towards the support frame 303, the third spring 704 is compressed.

[0046] When the transmission disc 7 rotates half a circle each time, the transmission disc 7 reverses half a circle, and the transmission plate 702 is driven to slide downward by the transmission rod 701. The transmission plate 702 drives the pressure frame 703 and the punching frame 304 to move downward by the third spring 704, so as to punch the lower pin 101. The third spring 704 can play a buffering protection role. Then the transmission disc 7 rotates half a circle to reset, and the transmission plate 702, the pressure frame 703 and the punching frame 304 are pushed upward to reset by the transmission rod 701, so as to facilitate the worker to take down the punched lower frame.

[0047] As shown in Figure 5 and Figure 7 The transmission mechanism for driving the contact block 401 to move is installed on the punching table 3. The transmission mechanism comprises a transmission disc 9, a transmission rod 901 and a transmission shaft 902. The transmission disc 9 is rotatably connected to the punching table 3. Two transmission rods 901 are symmetrically and rotatably connected to the transmission disc 9. The transmission rods 901 are located at the eccentric position of the transmission disc 9. The transmission shaft 902 is rotatably connected to the end of the transmission rod 901 away from the transmission disc 9. The transmission shaft 902 is rotatably connected to the same side of the contact block 401.

[0048] When the transmission disc 9 rotates ninety degrees each time, since the transmission rod 901 is located at the eccentric position of the transmission disc 9, the transmission disc 9 rotates ninety degrees to drive the two contact blocks 401 and the connecting rod 4 to move relative to each other by the transmission rod 901 and the transmission shaft 902. When the transmission disc 9 reverses ninety degrees, the transmission disc 9 drives the two contact blocks 401 and the connecting rod 4 to move away from each other by the transmission rod 901 and the transmission shaft 902.

[0049] As shown in Figure 4 , Figure 9 and Figure 10As shown, the upper feeding mechanism for pushing the lower frame body 1 includes a feeding seat 8, a pushing frame 807, a pushing block 808, a No. 5 spring 809, a control rod 810, a control plate 811 and a material box 812. Two feeding seats 8 are symmetrically fixed on the stamping table 3, and the pushing frame 807 is arranged between the two feeding seats 8. The pushing block 808 is slidably connected to the pushing frame 807 in the vertical direction, the No. 5 spring 809 is sleeved on the guide rod of the pushing block 808, the upper end of the No. 5 spring 809 is fixedly connected to the pushing block 808, and the lower end of the No. 5 spring 809 is fixedly connected to the pushing frame 807. The pushing frame 807 is used to drive the pushing block 808 to push the lower frame to be stamped onto the stamping table 3. The control rod 810 is fixedly connected to the three pushing blocks 808, the control plate 811 is fixedly connected to one end of the two feeding seats 8, and the control plate 811 is a parallelogram. The No. 5 spring 809 is used to keep the control rod 810 at a fixed height, which is the height between the upper and lower ends of the control plate 811. The control rod 810 can automatically rise and fall under the action of the control plate 811 and the No. 5 spring 809. The material box 812 is fixedly connected to the top ends of the two feeding seats 8, and the material box 812 is used to place the lower frame to be stamped.

[0050] The lower frame to be stamped is placed in the material box 812 in advance. The lowermost lower frame falls onto the feeding seat 8. First, the pushing frame 807 is controlled to move towards the stamping table 3. The pushing block 808 pushes the lower frame falling onto the feeding seat 8 onto the stamping table 3. During the movement of the pushing frame 807 towards the stamping table 3, the control rod 810 moves along the upper end of the control plate 811, and the No. 5 spring 809 is in a stretched state. When the lower frame body 1 contacts the stamping table 3, the lower frame is pushed into position. At this time, the control rod 810 moves to one end of the control plate 811 close to the stamping table 3. Then, the No. 5 spring 809 pulls the pushing block 808 and the control rod 810 to reset downward. The height of the control rod 810 after resetting is between the upper and lower ends of the control plate 811. During the resetting process of the pushing frame 807 moving away from the stamping table 3, the inclined surface of the control plate 811 first extrudes the control rod 810 downward. The control rod 810 drives the pushing block 808 to move downward, preventing the pushing block 808 from pushing the lower frame in the material box 812 away from the stamping table 3 during the resetting process. Then, the control rod 810 moves along the lower end of the control plate 811, and the No. 5 spring 809 is in a compressed state. When the pushing frame 807 resets, the control rod 810 moves to the other end of the control plate 811. The No. 5 spring 809 pushes the control rod 810 and the pushing block 808 to reset upward. During the process of pushing the lower frame to be stamped onto the stamping table 3, the lower frame to be stamped pushes the lower frame that has been stamped on the stamping table 3 away.

[0051] As Figure 4 and Figure 9The driving mechanism comprises a driving support 801, a lead screw 802, a driving guide rod 803, an inner threaded frame 804, a driving rod 805, a No. 4 spring 806, a secondary rack 903, a secondary gear 904, a primary rack 10, a primary gear 11, a driving shaft 12 and a motor 13. The two feeding seats 8 are fixedly connected with the driving support 801, the lead screw 802 is rotatably connected to the driving support 801, the other end of the lead screw 802 is rotatably connected to the lower side of the stamping table 3, the motor 13 is fixedly connected to the driving support 801, the output shaft of the motor 13 is fixedly connected with one end of the lead screw 802, the inner threaded frame 804 is threadedly connected to the lead screw 802, the driving guide rod 803 is fixedly connected to the driving support 801, the inner threaded frame 804 is slidably connected with the driving guide rod 803, the driving rod 805 is fixedly connected to the inner threaded frame 804, the No. 4 spring 806 is sleeved on the driving rod 805, the pushing frame 807 is slidably connected to the driving rod 805, the driving rod 805 can push the pushing frame 807 to the direction of the stamping table 3 through the No. 4 spring 806, the primary rack 10 and the secondary rack 903 are fixedly connected to the driving rod 805, the driving shaft 12 is fixedly connected to the two transmission discs 7, the primary gear 11 is fixedly connected to the driving shaft 12, the secondary gear 904 is fixedly connected to the lower side of the driven disc 9, the primary rack 10 is engaged with the primary gear 11 and the secondary rack 903 is engaged with the secondary gear 904 during the movement of the inner threaded frame 804 and the driving rod 805 to the direction of the stamping table 3.

[0052] When the motor 13 drives the lead screw 802 to rotate in the positive direction, the inner threaded frame 804 is driven to slide along the driving guide rod 803 to the direction of the stamping table 3, the pushing frame 807, the primary rack 10 and the secondary rack 903 are driven to move by the inner threaded frame 804 through the driving rod 805, when the pushing frame 807 moves to contact the stamping table 3, the pushing frame 807 is blocked, then the inner threaded frame 804 continues to move, the No. 4 spring 806 is compressed, the primary rack 10 is engaged with the primary gear 11 and the secondary rack 903 is engaged with the secondary gear 904 during the movement of the inner threaded frame 804, the transmission disc 7 is driven to rotate by the primary gear 11 and the driving shaft 12, the stamping frame 304 can move downward to be stamped, the driven disc 9 is driven to rotate by the secondary gear 904, the relative movement of the two abutment rods 4 drives the supporting block 302 to support the lower pin 101, when the motor 13 is reversed, the inner threaded frame 804 is driven to move away from the stamping table 3, so that the driving rod 805 and the structures connected thereto are reset away from the stamping table 3.

[0053] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A lead frame having a grid of bumps, characterized by, The upper frame and the lower frame, the upper frame includes upper frame body (2), upper pin (201) and upper boss (202), a plurality of upper pins (201) are arranged on the upper frame body (2) along the longitudinal direction, and the plurality of upper pins (201) are arranged into two rows, the plurality of upper pins (201) in each row are arranged at equal intervals, and the upper boss (202) is arranged on each upper pin (201), the lower frame includes lower frame body (1), lower pin (101) and lower boss (102), a plurality of lower pins (101) are arranged on the lower frame body (1) along the longitudinal direction, and the plurality of lower pins (101) are arranged into two rows, the plurality of lower pins (101) in each row are arranged at equal intervals, and the lower boss (102) is arranged on each lower pin (101), the upper boss (202) and the lower boss (102) are both grid-shaped convex structures.

2. The leadframe with a grid of bosses of claim 1, wherein, The directions of the end portions of the upper pins (201) in the same longitudinal column are the same, the directions of the end portions of the upper pins (201) in adjacent longitudinal columns are opposite, the directions of the end portions of the lower pins (101) in the same longitudinal column are also the same, and the directions of the end portions of the lower pins (101) in adjacent longitudinal columns are also opposite.

3. A processing apparatus for a lead frame with a boss mesh, characterized in that, The lower frame for processing the lead frame with boss grid in claim 1 comprises a punching table (3), a slide (301), a supporting block (302), a supporting frame (303), a punching frame (304), a punching seat (305) and a convex block (306), the supporting block (302) is slidably connected in the slide (301) of the punching table (3), the supporting block (302) is used for supporting the lower pin (101) so as to punch the lower boss (102) thereon, the supporting frame (303) is fixedly connected on the punching table (3), the punching frame (304) is slidably connected on the supporting frame (303), the punching seat (305) is fixedly connected on the lower side of the punching frame (304), the punching seat (305) and the supporting block (302) correspond to each other, the convex block (306) is fixedly connected on the punching seat (305), and the punching seat (305) and the convex block (306) are used for punching the shape of the lower boss (102) on the lower pin (101).

4. The apparatus according to claim 3, wherein The connecting rod (4) and the abutting block (401) for controlling the lifting of the supporting block (302) so as to discharge are further included, the connecting rod (4) is slidably connected on the punching table (3), the abutting block (401) is fixedly connected on the connecting rod (4), the abutting block (401) and the supporting block (302) are extrudedly matched, so that the supporting block (302) can be moved upward to support the lower pin (101).

5. The apparatus according to claim 4, wherein The first positioning mechanism for transverse positioning is further included, the first positioning mechanism is connected with the abutting block (401), and the first positioning mechanism comprises a guide rod (5), a spring (501) and a positioning push plate (502), the guide rod (5) is fixedly connected on the abutting block (401), the spring (501) is sleeved on the guide rod (5), and the positioning push plate (502) is slidably connected on the guide rod (5), so that the guide rod (5) can push the positioning push plate (502) through the spring (501).

6. The apparatus according to claim 3, wherein The second positioning mechanism for front and back positioning is connected with the stamping frame (304), and comprises a fixing frame (6), a fixing column (601), a positioning support rod (602), a hinged rod (603), a positioning clamping plate (604), a No. 2 guide rod (605), and a No. 2 spring (606). The fixing column (601) is fixedly connected to the support frame (303) through the fixing frame (6), and the fixing column (601) is fixedly connected with the positioning support rod (602). One end of the hinged rod (603) is rotatably connected to the positioning support rod (602). The positioning clamping plate (604) is rotatably connected to the other end of the hinged rod (603). The No. 2 guide rod (605) for horizontally guiding the positioning clamping plate (604) is slidably connected to the stamping frame (304). When the stamping frame (304) is lifted, the positioning clamping plate (604) will move under the action of the hinged rod (603). The No. 2 spring (606) for providing a restoring force for the positioning clamping plate (604) is sleeved on the No. 2 guide rod (605).

7. The apparatus of claim 4, wherein the apparatus further comprises a plurality of pins arranged in a grid pattern. The transmission mechanism for driving the stamping frame (304) to lift is installed on the stamping table (3), and comprises a transmission disc (7), a transmission rod (701), a transmission plate (702), a pressure frame (703), and a No. 3 spring (704). The transmission disc (7) is rotatably connected to the stamping table (3). One end of the transmission rod (701) is rotatably connected to the transmission disc (7). The other end of the transmission rod (701) is rotatably connected with the transmission plate (702). The transmission plate (702) is slidably connected to the support frame (303). When the transmission disc (7) rotates, the transmission plate (702) will be driven to move upward or downward through the transmission rod (701). The pressure frame (703) is slidably connected to the transmission plate (702). The No. 3 spring (704) is sleeved on the pressure frame (703). The lower end of the pressure frame (703) is fixedly connected to the support frame (303).

8. The apparatus according to claim 7, wherein The driven mechanism for driving the abutting block (401) to move is installed on the stamping table (3), and comprises a driven disc (9), a driven pull rod (901), and a driven shaft (902). The driven disc (9) is rotatably connected to the stamping table (3). One end of the driven pull rod (901) is rotatably connected to the driven disc (9). The other end of the driven pull rod (901) is rotatably connected with the driven shaft (902). The driven shaft (902) is rotatably connected with one of the abutting blocks (401) on the same side. When the driven disc (9) rotates, the driven shaft (902) will be driven to move closer or farther away through the driven pull rod (901).

9. The apparatus according to claim 8, wherein The upper feeding mechanism for pushing the lower frame (1) is also included, and the upper feeding mechanism is connected with the stamping table (3). The upper feeding mechanism includes a feeding seat (8), a pushing frame (807), a pushing block (808), a No. 5 spring (809), a position control rod (810), a position control plate (811) and a material box (812). The feeding seat (8) is fixedly connected to the stamping table (3), the pushing frame (807) is arranged between the feeding seats (8), the pushing block (808) is slidably connected to the pushing frame (807), the No. 5 spring (809) is sleeved on the pushing block (808), the pushing frame (807) is used for driving the pushing block (808) to push the lower frame to be stamped onto the stamping table (3), the position control rod (810) is fixedly connected to the pushing block (808), the position control plate (811) is fixedly connected to the feeding seat (8), the position control rod (810) can automatically adjust the height under the action of the position control plate (811) and the No. 5 spring (809), and the material box (812) is fixedly connected to the feeding seat (8).

10. The apparatus according to claim 9, wherein The driving mechanism for driving the pushing frame (807), the transmission disc (7) and the driven disc (9) is also included. The driving mechanism includes a driving support (801), a lead screw (802), a driving guide rod (803), an internal thread frame (804), a driving rod (805), a No. 4 spring (806), a secondary rack (903), a secondary gear (904), a primary rack (10), a primary gear (11), a driving shaft (12) and a motor (13). The driving support (801) is fixedly connected to the feeding seat (8). The lead screw (802) is rotatably connected to the driving support (801). The motor (13) for driving the lead screw (802) to rotate is fixedly connected to the driving support (801). The internal thread frame (804) is threadedly connected to the lead screw (802). The driving guide rod (803) for guiding the internal thread frame (804) is fixedly connected to the driving support (801). The driving rod (805) is fixedly connected to the internal thread frame (804). The No. 4 spring (806) is sleeved on the driving rod (805). The pushing frame (807) is slidably connected to the driving rod (805). The primary rack (10) and the secondary rack (903) are fixedly connected to the driving rod (805). The driving shaft (12) is fixedly connected to the transmission disc (7). The primary gear (11) is fixedly connected to the driving shaft (12). The secondary gear (904) is fixedly connected to the driven disc (9). The primary rack (10) is engaged with the primary gear (11) during the movement of the internal thread frame (804). The secondary rack (903) is engaged with the secondary gear (904).

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