A lead bending and forming system for a bottom-out-leg (SOP) package product

Abstract

The application belongs to the field of micro-assembly and electronic assembly, and relates to a lead bending and forming system for a bottom-leg SOP type packaging product. Precise lead forming is performed by using a customized lead bending and cutting die after pre-forming, so that lead crack problems caused by excessive lead stress due to direct bending are effectively reduced. The die is matched with a press machine to improve the lead forming effect, the lead bending angle and cutting size are more accurate, the batch-to-batch difference caused by human operation errors is reduced, the batch quality is improved, and the circuit assembly and welding requirements are met.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of micro-assembly and electronic connection, and relates to a lead bending and forming system for a bottom surface lead out SOP type packaging product. BACKGROUND

[0002] For the bottom surface lead out SOP type packaging product, lead forming, bending and cutting are one of the back-end processes of packaging, and the lead is processed according to the existing design requirements, and finally formed into a shape meeting the requirements of welding technology. In order to ensure the quality of module welding, the requirement for the bending, forming and cutting of the outer lead of the module is high, and the bending height, angle and cutting precision of the outer lead will affect the circuit welding reliability.

[0003] The traditional lead form of this type mainly relies on manual forming combined with a die, and the coplanarity and consistency cannot be guaranteed, and there is a large error in the bending and cutting consistency of different operators, which affects the product quality. SUMMARY

[0004] The application provides a lead bending and forming system for a bottom surface lead out SOP type packaging product, so as to solve the problem that in the prior art, the coplanarity and consistency cannot be guaranteed, and there is a large error in the bending and cutting consistency of different operators, which affects the product quality.

[0005] To achieve the above purpose, the technical scheme is as follows:

[0006] A lead bending and forming system for a bottom surface lead out SOP type packaging product, comprising a lead pre-forming die and a lead bending and cutting die.

[0007] The lead pre-forming die comprises a die handle, an upper die plate, an upper die frame, guide sleeves, guide columns, a forming upper die, a vertical clamping moving block, a horizontal clamping moving block, a horizontal clamp, a clamp fixing plate, a lower die frame, a micrometer, a horizontally moving inclined block, a bidirectional positioning inclined block and a lower die plate.

[0008] The die handle is fixed at the top of the upper die plate; the upper die frame is fixed at the lower part of the upper die plate; and the bottom of the upper die plate is provided with a plurality of guide sleeves.

[0009] The upper part of the lower die plate is provided with a plurality of guide columns; and the guide sleeves are connected with the corresponding guide columns in a matched mode.

[0010] The forming upper die is fixedly connected with the upper die frame.

[0011] The vertical clamping moving block is matched with the forming upper die in a dovetail groove mode; and the vertical clamping moving block is connected with the upper die frame through a spring.

[0012] The horizontal clamp is fixedly connected with the clamp fixing plate; the clamp fixing plate is fixed on one side of the upper part of the lower die plate; and the lower die frame is fixed on the upper part of the lower die plate.

[0013] The horizontal clamping moving block is connected with the lower die frame through dovetail groove form; the horizontal clamping moving block is connected with the horizontal clamping clamp through screw upper sleeve spring;

[0014] The front end of the micrometer is connected with the horizontally moving inclined block;

[0015] The bidirectional positioning inclined block is arranged on the lower side of the horizontally moving inclined block;

[0016] The lead bending and cutting die comprises a lead bending station, a lead cutting station, a second die handle, a second upper die plate, a second guide sleeve, an upper die frame, a lower die plate, a second guide column and a lower die frame;

[0017] The second die handle is fixed on the upper part of the second upper die plate; the upper die frame is fixed on the lower part of the second upper die plate;

[0018] The second guide sleeve of the second upper die plate is in clearance fit with the second guide column of the lower die plate;

[0019] The lower die frame is fixed on the upper part of the lower die plate;

[0020] The lead bending station is located between the upper die frame and the lower die frame, the top of the lead bending station is fixed on the upper die frame, and the bottom of the lead bending station is fixed on the lower die frame;

[0021] The lead cutting station is located between the upper die frame and the lower die frame; the top of the lead cutting station is fixed on the upper die frame, and the bottom of the lead cutting station is fixed on the lower die frame.

[0022] Preferably, the guide sleeve and the guide column are connected through a steel ball copper sleeve.

[0023] Preferably, the lower end face of the forming upper die is chamfered.

[0024] Preferably, the lead bending station comprises an upper pressing block, a pressing rod, a left pressing block, a right pressing block, a left fixed block, a right fixed block, a lower top block and a lower top block matching station.

[0025] The left pressing block, the right pressing block and the upper pressing block are riveted with the upper die frame;

[0026] The pressing rod is riveted in the upper pressing block;

[0027] The upper half of the lower die frame is provided with a horizontal through groove, the left fixed block and the right fixed block are provided with dovetail grooves, the left fixed block and the right fixed block are clamped in the lower die frame through the dovetail grooves, and screws are respectively fixed at the left and right side ports of the horizontal through groove of the lower die frame;

[0028] The lower top block is located above the lower top block matching station;

[0029] The lower top block matching station is located above the lower die plate.

[0030] Preferably, the size of the dovetail groove on the left fixed block and the right fixed block is smaller than that of the horizontal through groove of the upper half of the lower die frame.

[0031] Preferably, the lower top block matching station comprises a lower top block matching positioning inclined rod, a lower top block horizontal movement inclined block and a twist screw rod; the twist screw rod is connected with the lower top block horizontal movement inclined block, and the lower top block horizontal movement inclined block is connected with the lower top block matching positioning inclined rod.

[0032] Preferably, the lead cutting station comprises a top block, a left cutting knife, a right cutting knife and a lower fixed cutting knife.

[0033] The left cutting knife and the right cutting knife are riveted with the upper die holder; the lower fixed cutting knife is connected with the lower die holder through a screw; and the top block is connected with the upper die holder by using a spring.

[0034] Preferably, the die handle is connected with a press machine.

[0035] The present application has the advantages of:

[0036] The lead preforming die and the lead bending and cutting die are matched to perform accurate lead forming, effectively reducing the lead crack problem caused by excessive stress of the lead due to direct bending, and the use of the die matched with the press machine can improve the lead forming effect, the lead bending angle and the cutting size are more accurate, the batch difference caused by human operation error is reduced, the batch quality is improved, the circuit assembly and welding requirements are met. BRIEF DESCRIPTION OF DRAWINGS

[0037] The drawings accompanying the specification constitute part of this application and illustrate one or more exemplary embodiments (hereinafter referred to as "the embodiments") of the application and the description exemplifies the application and does not limit the application. In the drawings:

[0038] Figure 1 It is a schematic diagram of the lead preforming die;

[0039] Figure 2 It is a three-dimensional schematic diagram of the lead preforming die;

[0040] Figure 3 It is a front view of the lead bending and cutting die;

[0041] Figure 4 It is a left side view of the lead bending and cutting die;

[0042] Figure 5 It is a right side view of the lead bending and cutting die;

[0043] Figure 6 It is a schematic diagram of the lead bending station;

[0044] Figure 7 It is a schematic diagram of the lower top block;

[0045] Figure 8 It is a schematic diagram of the lead cutting station;

[0046] Figure 9 The schematic diagram of the lower fixed cutter is shown.

[0047] In the figure, 1 is a die handle; 2 is an upper die plate; 3 is an upper die holder; 4 is a guide sleeve; 5 is a guide column; 6 is a forming upper die; 7 is a vertical clamping moving block; 8 is a horizontal clamping moving block; 9 is a horizontal clamping jaw; 10 is a clamping jaw fixing plate; 11 is a lower die holder; 12 is a micrometer; 13 is a horizontally moving inclined block; 14 is a bidirectional positioning inclined block; and 15 is a lower die plate.

[0048] 21 is a lead bending station; 22 is a lead cutting station; 23 is a second die handle; 24 is a second upper die plate; 25 is a second guide sleeve; 26 is an upper die holder; 27 is a lower die plate; 28 is a second guide column; and 29 is a lower die holder.

[0049] 31 is an upper pressing block; 32 is a pressing rod; 33 is a left pressing block; 34 is a right pressing block; 35 is a left fixing block; 36 is a right fixing block; 37 is a lower top block; 38 is a lower top block matching station; 39 is a lower top block matching positioning inclined rod; 40 is a lower top block horizontally moving inclined block; and 30 is a twisting screw rod.

[0050] 41 is a top block; 42 is a left cutter; 43 is a right cutter; and 44 is a lower fixed cutter. DETAILED DESCRIPTION

[0051] The present application will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0052] The following detailed description is exemplary and is intended to provide further details of the present application. Unless otherwise defined, all technical and scientific terms used in the present application have the same meanings as generally understood by those skilled in the art to which the present application belongs. The terms used in the present application are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application.

[0053] Embodiment 1:

[0054] A bottom surface out leg (SOP) type packaging product lead bending forming system includes a lead pre-forming die and a lead bending and cutting die.

[0055] As shown in Figure 1 and Figure 2 A lead pre-forming die includes a die handle 1, an upper die plate 2, an upper die holder 3, a guide sleeve 4, a guide column 5, a forming upper die 6, a vertical clamping moving block 7, a horizontal clamping moving block 8, a horizontal clamping jaw 9, a clamping jaw fixing plate 10, a lower die holder 11, a micrometer 12, a horizontally moving inclined block 13, a bidirectional positioning inclined block 14, and a lower die plate 15.

[0056] The die handle 1 is connected with the upper die plate 2 by screws; the upper die frame 3 is connected with the upper die plate 2 by screws; the upper die plate 2 is connected with the guide sleeve 4 by interference.

[0057] The lower die plate 15 is connected with the guide column 5 by interference; the guide sleeve 4 and the guide column 5 are connected by steel ball copper sleeve to ensure precise fit.

[0058] The forming upper die 6 is connected with the upper die frame 3 by screws; the vertical clamping moving block 7 is matched with the forming upper die 6 in dovetail groove form; the vertical clamping moving block 7 is connected with the upper die frame 3 by spring.

[0059] The horizontal clamping jaw 9 is connected with the clamping jaw fixing plate 10 by screws; the clamping jaw fixing plate 10 is connected with the lower die plate 15 by screws; the lower die frame 11 is connected with the lower die plate 15 by screws.

[0060] The horizontal clamping moving block 8 is connected with the lower die frame 11 by dovetail groove form; the horizontal clamping moving block 8 is connected with the horizontal clamping jaw 9 by screw upper spring, which can ensure that the horizontal clamping jaw clamps products with different thicknesses.

[0061] The front end of the micrometer 12 is connected with the horizontal moving inclined block 13 by screws; the micrometer 12 is rotated to drive the horizontal moving inclined block 13 to move left and right.

[0062] When the horizontal moving inclined block 13 moves to the right, the bidirectional positioning inclined block 14 moves upward, clamps the lower part of the to-be-formed lead in the vertical direction, and is higher than the position of the lower die frame 11 to cooperate with the horizontal clamping moving block 8 to clamp the body part of the to-be-formed product in the horizontal direction.

[0063] When the mold is pressed down, the bidirectional positioning inclined block 14 and the vertical clamping moving block 7 jointly clamp the inner and outer sides of the root of the to-be-formed lead.

[0064] The vertical clamping moving block 7 and the bidirectional positioning inclined block 14 are designed according to the vertical direction size requirement of the to-be-formed lead processing size drawing, and the thickness of the end head is ensured to meet the drawing requirement of the vertical direction of the pre-formed lead.

[0065] The horizontal clamping jaw 9 pulls the pull rod to the left, the horizontal clamping moving block 8 moves to the left, the to-be-pre-formed product is placed, the micrometer 12 is twisted to drive the bidirectional positioning inclined block 14 to move upward, the product is positioned in the horizontal and vertical directions, and after the end head of the bidirectional positioning inclined block 14 is matched with the lower side of the to-be-formed lead, the horizontal clamping jaw 9 pulls the pull rod to the right, so that the horizontal clamping moving block 8 moves to the right and clamps the body of the product together with the bidirectional positioning inclined block 14.

[0066] When the mold is pressed down, the forming upper die 6 is driven to move downward, the lead clamped stably by the bidirectional positioning inclined block 14 and the vertical clamping moving block 7 is pressed down, cooperates with the inclined surface of the bidirectional positioning inclined block 14, and the pre-forming of the lead is completed.

[0067] The lower end face of the upper mold end 6 is chamfered to ensure that the lead wire is not scratched.

[0068] like Figures 3 to 8 As shown, a lead wire bending and cutting die includes a lead wire bending station 21, a lead wire cutting station 22, a second die handle 23, a second upper die plate 24, a second guide sleeve 25, an upper die frame 26, a lower die plate 27, a second guide post 28, and a lower die frame 29.

[0069] The second mold handle 23 is connected to the second upper mold plate 24 by screws; the upper mold frame 26 is connected to the second upper mold plate 24 by screws.

[0070] The second guide sleeve 25 of the second upper template 24 is interference-connected to the second guide post 28 of the lower template 27.

[0071] The lower mold frame 29 and the lower template 27 are connected by screws.

[0072] The lead wire bending station 21 is located between the upper mold frame 26 and the lower mold frame 29; the lead wire cutting station 22 is located between the upper mold frame 26 and the lower mold frame 29.

[0073] The lead wire bending station 21 includes an upper pressure block 31, a pressure rod 32, a left pressure block 33, a right pressure block 34, a left fixing block 35, a right fixing block 36, a lower top block 37, and a lower top block mating station 38.

[0074] The left pressure block 33, the right pressure block 34 and the upper pressure block 31 are all riveted to the upper mold frame 26;

[0075] The pressure rod 32 is riveted to the upper pressure block;

[0076] The upper half of the lower mold frame 29 has a transverse through slot. The left fixing block 35 and the right fixing block 36 are locked in the lower mold frame 29 in the form of dovetail grooves, and the size of the dovetail grooves is slightly smaller than the size of the slot of the lower mold frame 29, so as to ensure that the left fixing block 35 and the right fixing block 36 can slide left and right. Screws are fixed at the left and right ends of the slot of the lower mold frame 29 to prevent the left fixing block 35 and the right fixing block 36 from sliding out of the through slot.

[0077] The lower top block on the lead wire bending station 21 is matched with the station 38 to accommodate the thickness difference of the product.

[0078] The lower top block mating station 38 includes a lower top block mating positioning inclined rod 39, a lower top block horizontal moving inclined block 40, and a torsion screw 30; the torsion screw 30 is connected to the lower top block horizontal moving inclined block 40, and the lower top block horizontal moving inclined block 40 is connected to the lower top block mating positioning inclined rod 39.

[0079] The lower top block cooperation station 38 is slotted on the lower die frame 29, the lower top block horizontal moving inclined block 40 is embedded in the lower die frame, and is connected with the twisting screw rod 30 through a screw. The twisting screw rod 30 is twisted to drive the lower top block horizontal moving inclined block 40 to move left and right. The lower die frame 29 is slotted according to the size of the lower top block 37 cooperation positioning inclined rod, and the lower top block horizontal moving inclined block 40 moving left and right can drive the lower top block 37 cooperation positioning inclined rod to move up and down, so as to achieve the purpose of fixing the product to be formed below.

[0080] When the lead bending is performed, the module lead after the lead pre-forming is placed upwards in the lead bending station, and the left fixed block 35 and the right fixed block 36 are moved to the module direction to clamp the module body and the lead side wall. The twisting screw rod 30 is twisted to adjust the lower top block 37, so as to ensure that the lower top block 37 is closely attached to the module. The upper die is driven downwards by the press, the left pressing block 33 and the right pressing block 34 drive the lead to move downwards, until the upper pressing block 31 is combined with the left fixed block 35 and the right fixed block 36 above, that is, the lead bending is completed.

[0081] The lead cutting station 22 includes a top block 41, a left cutting knife 42, a right cutting knife 43 and a lower fixed cutting knife 44.

[0082] The left cutting knife 42 and the right cutting knife 43 are riveted with the upper die frame 26; the lower fixed cutting knife 44 is connected with the lower die frame 29 through a screw; and the top block 41 is connected with the upper die frame 26 by using a spring.

[0083] When the lead cutting is performed, the module is placed in the clamping position of the lower fixed cutting knife 44, the left cutting knife 42 and the right cutting knife 43 are driven downwards by the press, until they are combined with the lower fixed cutting knife 44, and the upper and lower extrusion cuts off the excess lead part.

[0084] The upper die plate 2 and the second upper die plate 24 are on the same production line.

[0085] The worker can take out and place the mold through the mechanical arm taking out device.

[0086] Embodiment 2:

[0087] A lead bending forming method of a bottom surface out leg (SOP) type packaging product includes the following steps:

[0088] Step one: pre-forming;

[0089] (1) Place the lead bending surface of one side of the module on the bearing table of the pre-forming mold, manually press the pressing rod downwards, move the movable pressing block to the lead between the module, and make the mold contact with the module bottom plate.

[0090] (2) Turn the micrometer 12 micrometer drum to move the lower die top block of the mold upwards, until it contacts with the bottom of the outer lead.

[0091] (3) Lift the handle on the left side of the mold to make the mold fixing block press the top surface of the module tightly;

[0092] (4) Pull down the pressing rod, the lower die of the mold presses the lower lead, and the pre-forming of the lead on one side is completed;

[0093] (5) Loosen the right side pressing block, the mechanical arm takes out the device to take out the module, and the above operation is repeated on the lead on the other side of the module to complete the pre-forming of the lead on the other side and obtain the pre-formed module.

[0094] Step two: lead bending;

[0095] (1) The pre-formed module lead is upwards, the pre-formed module body is loaded into the lead bending cutting die right side lead bending station 21, both hands press the fixed slide block on both sides of the mold to tightly fit the module body, and the right side rotating rod is rotated to drive the top block below the top surface of the module to tightly press the module.

[0096] (2) After the module is fixed, the mold is moved downward by using the press to press and assemble, the lead is bent, and after the bending is completed, the upper mold is lifted, and the distance between the upper mold and the lower mold is kept above 5cm.

[0097] (3) After the upper and lower molds of the mold are separated, the right side rotating rod is rotated, the top block below the module is moved downward, the fixed block on both sides is loosened, and the module after lead bending is gently removed.

[0098] Step three: lead cutting;

[0099] (1) The module after lead bending is gently placed into the lead cutting station from the left side;

[0100] (2) The mold upper mold is moved downward by using the press to press and assemble, the upper and lower molds are combined, and the lead cutting is completed;

[0101] (3) After the lead cutting is completed, the mechanical arm takes out the device to take down the module.

[0102] From the technical common sense, the application can be realized by other embodiments without departing from the spirit or essential characteristics thereof. Therefore, the above disclosed embodiments are just examples, and are not the only ones. All changes within the scope of the application or within the scope equivalent to the application are included in the application.

Claims

1. A lead bending forming system for SOP-type packaged products with bottom-mounted legs, characterized in that, This includes lead wire preforming molds and lead wire bending and cutting molds; The lead wire preforming mold includes a mold handle (1), an upper template (2), an upper mold frame (3), a guide sleeve (4), a guide post (5), a forming upper mold (6), a vertical clamping moving block (7), a horizontal clamping moving block (8), a horizontal clamp (9), a clamp fixing plate (10), a lower mold frame (11), a micrometer (12), a horizontal moving inclined block (13), a bidirectional positioning inclined block (14), and a lower template (15); The mold handle (1) is fixed to the top of the upper mold plate (2); the upper mold frame (3) is fixed to the lower part of the upper mold plate (2); and several guide sleeves (4) are provided at the bottom of the upper mold plate (2). Several guide posts (5) are installed on the upper part of the lower template (15); the guide sleeve (4) is connected to the corresponding guide post (5); The upper forming mold (6) is fixedly connected to the upper mold frame (3); The vertical clamping moving block (7) and the upper forming mold (6) are fitted in the form of a dovetail groove; the vertical clamping moving block (7) and the upper mold frame (3) are connected by a spring; The horizontal clamp (9) is fixedly connected to the clamp fixing plate (10); the clamp fixing plate (10) is fixed on one side of the upper part of the lower template (15); the lower mold frame (11) is fixed on the upper part of the lower template (15); The horizontal clamping moving block (8) is connected to the lower mold frame (11) through a dovetail groove; the horizontal clamping moving block (8) is connected to the horizontal clamp (9) through a screw with a spring on top. The front end of the micrometer (12) is connected to the horizontally moving inclined block (13); The bidirectional positioning inclined block (14) is set on the lower side of the horizontal moving inclined block (13); The lead wire bending and cutting die includes a lead wire bending station (21), a lead wire cutting station (22), a second die handle (23), a second upper die plate (24), a second guide sleeve (25), an upper die frame (26), a lower die plate (27), a second guide post (28), and a lower die frame (29); The second mold handle (23) is fixed to the upper part of the second upper mold plate (24); the upper mold frame (26) is fixed to the lower part of the second upper mold plate (24); The second guide sleeve (25) of the second upper template (24) and the second guide post (28) of the lower template (27) are fitted with a clearance. The lower mold frame (29) is fixed to the upper part of the lower template (27); The lead wire bending station (21) is located between the upper mold frame (26) and the lower mold frame (29). The top of the lead wire bending station (21) is fixed on the upper mold frame (26), and the bottom of the lead wire bending station (21) is fixed on the lower mold frame (29). The lead wire cutting station (22) is located between the upper mold frame (26) and the lower mold frame (29); the top of the lead wire cutting station (22) is fixed on the upper mold frame (26), and the bottom of the lead wire cutting station (22) is fixed on the lower mold frame (29).

2. The lead bending forming system for a bottom-mounted SOP type packaged product as described in claim 1, characterized in that, The guide sleeve (4) and the guide post (5) are connected by a steel ball copper sleeve.

3. The lead bending forming system for a bottom-mounted SOP type packaged product as described in claim 1, characterized in that, The lower end face of the upper mold (6) is chamfered.

4. The lead bending forming system for a bottom-mounted SOP type packaged product as described in claim 1, characterized in that, The lead wire bending station (21) includes an upper pressure block (31), a pressure rod (32), a left pressure block (33), a right pressure block (34), a left fixing block (35), a right fixing block (36), a lower top block (37), and a lower top block mating station (38); The left pressure block (33), the right pressure block (34) and the upper pressure block (31) are all riveted to the upper mold frame (26); The pressure bar (32) is riveted to the upper pressure block (31); The upper half of the lower mold frame (29) is opened with a transverse through slot. The left fixing block (35) and the right fixing block (36) are provided with dovetail grooves. The left fixing block (35) and the right fixing block (36) are locked in the lower mold frame (29) through the dovetail grooves. Screws are fixed at the left and right ends of the transverse through slot of the lower mold frame (29). The lower top block (37) is located above the lower top block mating station (38); The lower top block mating station (38) is located above the lower template (27).

5. The lead bending forming system for a bottom-mounted SOP type packaged product as described in claim 4, characterized in that, The dovetail grooves on the left fixed block (35) and the right fixed block (36) are smaller than the transverse through grooves in the upper half of the lower mold frame (29).

6. The lead bending forming system for a bottom-mounted SOP type packaged product as described in claim 4, characterized in that, The lower top block mating station (38) includes a lower top block mating positioning inclined rod (39), a lower top block horizontal moving inclined block (40), and a torsion screw (30); the torsion screw (30) is connected to the lower top block horizontal moving inclined block (40), and the lower top block horizontal moving inclined block (40) is connected to the lower top block mating positioning inclined rod (39).

7. The lead bending forming system for a bottom-mounted SOP type packaged product as described in claim 1, characterized in that, The lead wire cutting station (22) includes a top block (41), a left cutter (42), a right cutter (43), and a lower fixed cutter (44); The left cutting blade (42) and the right cutting blade (43) are both riveted to the upper mold frame (26); the lower fixed cutting blade (44) is connected to the lower mold frame (29) by screws; the top block (41) is connected to the upper mold frame (26) by springs.

8. The lead bending forming system for a bottom-mounted SOP type packaged product as described in claim 1, characterized in that, The mold handle (1) is connected to an external press.

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