Loading equipment for stacked lead frames with synchronous push

Abstract

The present application discloses a loading device for synchronously pushing stacked lead frames, including a transport mechanism, a transfer mechanism and a pushing mechanism. The transport mechanism includes a loading track and a unloading track distributed up and down. A conveying assembly for conveying a jig is arranged on the loading track. The transfer mechanism is arranged on one side of the transport mechanism. The transfer mechanism includes a transfer frame that moves in a vertical direction to facilitate the transfer of the jig. The pushing mechanism is arranged on one side of the transfer mechanism, and is used to push the lead frame in the jig to realize the return of the lead frame. By utilizing the cooperation between the transport mechanism, the transfer mechanism and the pushing mechanism, the transfer of the lead frame in the jig can be realized efficiently. The transport mechanism can drive the jig in the transport mechanism to move. During the movement of the transfer mechanism, the pushing mechanism can push the lead frame in the jig to the next production process, and the transfer of the lead frame can be realized quickly.

Description

Technical Field

[0001] The present application relates to the technical field of IC lead frame processing, and in particular to a loading device for synchronously pushing stacked lead frames. Background Art

[0002] Lead frame is the chip carrier of integrated circuit. It is a key structural part that uses bonding materials (gold wire, aluminum wire, copper wire) to realize the electrical connection between the internal circuit lead-out end of the chip and the external lead to form an electrical circuit. It plays a bridge role in connecting with external wires and is mainly used in packaged chips. When IC is packaged, the chip needs to be solidified on the base island, and then the IC packaging operation is performed. In order to improve the efficiency of packaging, the actual production method is to connect many chips to a lead frame, and then perform injection molding together. After cooling and solidification, the entire lead frame needs to be cut and trimmed.

[0003] When the lead frame is injected and enters the next process, it is generally transferred by automated equipment. At present, most lead frames are usually transferred as single-piece lead frames. For example, the patent document with publication number CN114803493A specifically discloses a material transfer mechanism and a material conveying device, which mainly includes a material temporary storage mechanism, a material transfer mechanism and a conveying mechanism. The device mainly uses the moving component in the material transfer mechanism to drive the material removal component to move, transfer the lead frame stacked in the material temporary storage mechanism to the conveying mechanism, and then use the conveying mechanism to transfer the lead frame to the next production process.

[0004] During the operation of the above technology, the lead frame must first be transferred to the temporary storage mechanism for materials and stacked up. The upper and lower lead frames are in direct contact. Since the weight of the upper lead frame is concentrated on the lower lead frame, a large number of lead frames will not be stacked in the temporary storage mechanism for materials. Therefore, when transferring the lead frame, the lead frame needs to be frequently placed in the temporary storage mechanism for materials. If the lead frame is placed using a loading transfer mechanism, the same loading transfer mechanism performs more actions and the transfer process is less efficient; if other loading mechanisms are used to place the lead frame, two sets of loading mechanisms will increase production costs.

[0005] In order to solve the problem of low efficiency in lead frame transfer mentioned above, a jig is used in the process of transferring the lead frame. The jig is a frame-shaped structure with openings on both sides. The jig has multiple parallel slot groups, and the lead frames are placed in the slot groups one by one. In order to facilitate material withdrawal, the slot groups are all through slots. Although the jig can solve the problem of simultaneously transporting a large number of lead frames, there has been no better solution for how to withdraw the lead frames from the slots. Summary of the invention

[0006] During the current transfer process of lead frames, the transfer efficiency is low. Even using a jig cannot solve the lead frame transfer problem more efficiently. In order to improve the transfer efficiency of lead frames, the present application provides a loading device for synchronously pushing stacked lead frames.

[0007] The present application provides a stacked lead frame synchronous pushing loading device, which adopts the following technical solution:

[0008] A stacked lead frame synchronous feeding device, comprising:

[0009] A transport mechanism, the transport mechanism comprising a loading track and a unloading track distributed up and down, the loading track is provided with a conveying assembly for conveying the jig, and the loading track and the unloading track both have a loading end and a unloading end;

[0010] A transfer mechanism is arranged on one side of the transport mechanism, and the transfer mechanism includes a transfer frame moving in a vertical direction, and the transfer frame is adjacent to the unloading end of the loading track and the loading end of the unloading track, so as to facilitate the transfer of the jig;

[0011] The pushing mechanism is arranged on one side of the transfer mechanism, and the pushing mechanism includes a pushing plate that moves in the horizontal direction. The pushing plate is used to be arranged opposite to the opening of the fixture and is used to push the lead frame in the fixture to realize the withdrawal of the lead frame.

[0012] Preferably, the loading equipment also includes a fixed seat, which is arranged on one side of the transportation mechanism, and the transfer frame is slidably arranged on the fixed seat. The transfer frame includes a connecting cross plate and a supporting arm fixedly arranged on the connecting cross plate, and the supporting arm is arranged in an open groove shape on the side facing the transportation mechanism to form a supporting space for supporting the jig.

[0013] Preferably, a lifting drive component and a horizontal material return assembly are provided on the fixed seat, the lifting drive component is used to drive the transfer frame to lift and lower on the fixed seat, the horizontal material return assembly is arranged on the side away from the opening groove of the supporting arm, and the horizontal material return assembly is used to transfer the jig from the supporting arm to the unloading track.

[0014] Preferably, the lifting drive component includes a driving screw rotatably connected to a fixed seat, a nut seat threadably matched with the driving screw, and a driving plate fixedly connected to the nut seat, a guide rod fixedly connected to the fixed seat, the driving plate slidably sleeved on the guide rod, and the supporting arm fixedly connected to the driving plate.

[0015] Preferably, the horizontal material stripping assembly includes a driving cylinder fixedly connected to a fixed seat, a sliding frame fixedly connected to a piston rod of the driving cylinder, and a material stripping plate fixedly connected to the sliding frame, wherein the piston rod of the driving cylinder faces the loading end of the unloading track.

[0016] Preferably, the conveying assembly comprises a stepping plate slidably connected to the feeding track and a push block fixedly connected to the stepping plate, and the push block is used to push the jig to move the feeding;

[0017] One side of the pushing block for pushing materials is connected with a floating block via a buffer spring.

[0018] Preferably, a fixed plate is fixedly provided on one side of the transport mechanism and the transfer mechanism, the pushing mechanism comprises a synchronous lifting plate slidably provided on the fixed plate in the vertical direction, a moving block is slidably provided on the synchronous lifting plate, and the pushing plate is fixedly connected to the moving block;

[0019] A limiting piece is arranged on the fixed plate, and a limiting groove is provided on the synchronous lifting plate. When the limiting piece is engaged with the limiting groove, the pushing plate is maintained at a horizontal pushing position. A damper is fixedly arranged on the fixed plate, and the damper is arranged below the synchronous lifting plate. The piston rod of the damper is fixedly connected to the lower end of the synchronous lifting plate. When the limiting piece is separated from the limiting groove, the synchronous lifting plate and the transfer rack move downward synchronously, and the displacement distance of the synchronous lifting plate is equal to the distance between adjacent lead frames.

[0020] Preferably, the position-limiting member comprises a positioning block fixedly arranged on the fixed plate, a permanent magnet slidably connected to the positioning block, and a return spring arranged between the positioning block and the permanent magnet;

[0021] A delay switch is provided on the synchronous lifting plate, the delay switch is located at the end of the moving stroke of the moving block, and the delay switch is closer to the transportation mechanism. An electromagnet electrically connected to the delay switch is provided on the synchronous lifting plate, and the electromagnet has the same magnetic pole as the permanent magnet on the opposite side.

[0022] When the moving block contacts the delay switch, the delay switch sends a signal to control the electromagnet to start, so that the permanent magnet is separated from the limit groove under the magnetic force of the electromagnet, and the synchronous lifting plate moves downward under the action of gravity.

[0023] Preferably, a booster cylinder is provided on the fixed plate, and the booster cylinder is arranged below the synchronous lifting plate, and the piston rod of the booster cylinder faces the synchronous lifting plate. When the electromagnet loses power, the booster cylinder is started to push the synchronous lifting plate.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. By utilizing the cooperation between the transport mechanism, the transfer mechanism and the pushing mechanism, the lead frame in the jig can be efficiently transferred. The transfer mechanism can drive the jig in the transport mechanism to move. During the movement of the transfer mechanism, the pushing mechanism can push the lead frame in the jig to the next production process, thus quickly transferring the lead frame.

[0026] 2. During the pushing process, the push plate can not only push the lead frame in the fixture to the next production process, but also move downward synchronously with the transfer rack. When the push plate moves downward with the transfer rack, it can synchronously exit the fixture, thereby realizing the automated transfer of the lead frame more efficiently;

[0027] 3. With the cooperation of the limiter, electromagnet, damper and power-assisting cylinder, the synchronous lifting plate can synchronously follow the transfer rack to move slowly downward. When the synchronous lifting plate needs to be reset, the synchronous lifting plate can be quickly reset under the synchronous action of the limiter and the power-assisting cylinder to improve the loading efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the three-dimensional structure of a stacked lead frame synchronously pushing material loading device in this embodiment is depicted;

[0029] Figure 2 A three-dimensional structural schematic diagram of another perspective of the stacked lead frame synchronous pushing loading device in this embodiment is depicted;

[0030] Figure 3 Draws Figure 2 A schematic diagram of the structure of part A in the middle;

[0031] Figure 4 A partial structural schematic diagram of a stacked lead frame synchronous pushing loading device in this embodiment is depicted, which is mainly used to reflect the positional relationship between the transfer rack and the fixture;

[0032] Figure 5 A partial structural schematic diagram of a stacked lead frame synchronous pushing loading device in this embodiment is depicted, which is mainly used to illustrate the structure of the transfer rack;

[0033] Figure 6 A schematic structural diagram of the position of the pushing structure in the loading device for synchronously pushing stacked lead frames in this embodiment is depicted;

[0034] Figure 7 Draws Figure 6 A schematic diagram of the structure of part B in the middle;

[0035] Figure 8A schematic diagram of the back structure of the stacked lead frame synchronous pushing loading device in this embodiment is depicted, which is mainly used to reflect the structure of the horizontal stripping component.

[0036] Description of reference numerals:

[0037] 100. Fixtures;

[0038] 10. Fixed seat;

[0039] 20. Transport mechanism; 21. Loading track; 22. Stepping loading assembly; 221. Stepping plate; 222. Push block; 223. Floating block; 224. Buffer spring; 23. Unloading track; 25. Support slideway;

[0040] 30. Transfer mechanism; 31. Vertical transfer assembly; 311. Driving motor; 312. Driving screw rod; 313. Nut seat; 314. Driving plate; 315. Guide rod; 316. Transfer frame; 317. Connecting cross plate; 318. Support arm; 319. Pressing cylinder; 320. Pressing plate; 321. Limiting rod; 33. Horizontal material stripping assembly; 331. Driving cylinder; 332. Sliding frame; 333. Material stripping plate;

[0041] 40. Pushing mechanism; 41. Synchronous lifting plate; 411. Limiting groove; 42. Moving block; 43. Pushing plate; 44. Limiting column; 45. Travel switch; 46. Induction plate; 47. Limiting piece; 471. Positioning block; 472. Permanent magnet; 473. Reset spring; 48. Damper; 49. Electromagnet; 50. Delay switch; 51. Power cylinder; 60. Fixed plate. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1-8 This application is described in further detail.

[0043] The embodiment of the present application discloses a loading device for synchronously pushing stacked lead frames.

[0044] Reference Figure 1 The stacked lead frame synchronous pushing loading device includes a fixing seat 10, a transport mechanism 20, a transfer mechanism 30 and a pushing mechanism 40.

[0045] Reference Figure 1 and Figure 2The stack transport mechanism 20 is fixedly arranged on one side of the fixed seat 10. The transport mechanism 20 includes a loading track 21, a stepping loading assembly 22 arranged in the loading track 21, and a unloading track 23. The loading track 21 and the unloading track 23 are parallel to each other, and the loading track 21 is arranged above the unloading track 23. The jig 100 loaded with the lead frame is arranged in the loading track 21, and the stepping loading assembly 22 is used to push the jig 100 to move. Generally, the jig 100 is a frame-shaped structure with openings on both sides. The jig 100 has a plurality of mutually parallel slot groups, and the lead frames are placed in the slot groups one by one.

[0046] Reference Figure 1 and Figure 2 The transfer mechanism 30 includes a vertical transfer assembly 31 and a horizontal material stripping assembly 33 disposed on the fixed seat 10. The vertical transfer assembly 31 moves between the loading track 21 and the unloading track 23, and is used to transfer the fixture 100 on the loading track 21 to one side of the unloading track 23, and then use the horizontal material stripping assembly 33 to transfer the fixture 100 to the unloading track 23. During the process of the vertical transfer assembly 31 transferring the fixture 100, the pushing mechanism 40 can push the lead frame in the fixture 100 to the production equipment of the next process, such as injection molding, rib cutting and other specific production equipment.

[0047] Reference Figure 1 and Figure 2 The loading track 21 and the unloading track 23 both include a track body, and a support slide 25 is provided in the track body, and the fixture 100 is arranged and placed on the support slide 25. The loading track 21 and the unloading track 23 both include a loading end and a unloading end, and the unloading end of the loading track 21 corresponds to the loading end of the unloading track 23.

[0048] Reference Figure 2 and Figure 3 The stepping feeding assembly 22 includes a first synchronous belt driving structure, a stepping plate 221 linked with the first synchronous belt driving structure, and a push block 222 fixedly connected with the stepping plate 221. The first synchronous belt driving structure is arranged below the support slide 25, and the stepping plate 221 and the push block 222 are both arranged above the support slide 25. The stepping plate 221 is fixedly connected with the synchronous belt in the first synchronous belt driving structure. Under the driving action of the first synchronous belt driving structure, the stepping plate 221 is slidably connected in the feeding track 21. The stepping plate 221 drives the push block 222 to move in the feeding track 21, and can push the fixture 100 in the support slide 25 to move for feeding.

[0049] Reference Figure 2 and Figure 3A floating block 223 is provided on the side of the push block 222 facing the fixture 100. The floating block 223 is floatingly connected to one side of the push block 222 through a buffer spring 224. During the movement of the push block 222, the floating block 223 abuts against the fixture 100, and plays a buffering role under the elastic potential energy of the buffer spring 224, so that no large noise is generated during the process of pushing the fixture 100. At the same time, a certain buffer gap is left between the floating block 223 and the push block 222, which can also prevent the push block 222 from applying a large pressure to the fixture 100, so that the fixture 100 can move and load materials more smoothly.

[0050] Reference Figure 4 The vertical transfer assembly 31 includes a lifting drive component arranged on the fixed seat 10 and a transfer frame 316 linked to the lifting drive component. Under the driving action of the lifting drive component, the transfer frame 316 can drive the fixture 100 to move between the loading track 21 and the unloading track 23.

[0051] Reference Figure 4 and Figure 5 The lifting drive component includes a driving motor 311 fixedly connected to the fixed seat 10, a driving screw rod 312 fixedly connected to the output end of the driving motor 311, a nut seat 313 threadedly matched with the driving screw rod 312, and a driving plate 314 fixedly connected to the nut seat 313, and the transfer frame 316 is fixedly connected to the driving plate 314. The driving screw rod 312 is rotatably connected to the fixed seat 10, and a guide rod 315 is fixedly connected to the fixed seat 10. A guide hole is provided on the driving plate 314, and the driving plate 314 is slidably sleeved on the guide rod 315 through the guide hole. The driving motor 311 drives the driving screw rod 312 to rotate, and the driving screw rod 312 drives the driving plate 314 to move up and down through the nut seat 313. The driving plate 314 can slide on the fixed seat 10 relatively smoothly under the guiding and limiting action of the guide rod 315, and then the driving plate 314 drives the transfer frame 316 to rise and fall on the fixed seat 10.

[0052] Reference Figure 4 and Figure 5 The transfer frame 316 includes a connecting cross plate 317 and a supporting arm 318 fixedly connected to the connecting cross plate 317. The supporting arm 318 is fixedly connected to the driving plate 314. In the present embodiment, two supporting arms 318 are provided. The two supporting arms 318 are arranged to be open groove-shaped on one side facing the loading track 21 and the unloading track 23. The opening groove is specifically a U-shaped opening. The opening groove has three supporting surfaces. The three supporting surfaces form a supporting space, which can support and limit the bottom wall, side wall and top wall of the fixture 100.

[0053] Reference Figure 4 and Figure 5The connecting cross plate 317 is fixedly connected between the two supporting arms 318, and a clamping cylinder 319 is fixedly connected to the connecting cross plate 317. The piston rod of the clamping cylinder 319 is set downward, and the end of the piston rod of the clamping cylinder 319 is fixedly connected to a clamping plate 320, that is, the clamping plate 320 faces the fixture 100. After the fixture 100 is transferred to the two supporting arms 318, the clamping cylinder 319 is started, and the clamping cylinder 319 drives the clamping plate 320 to move downward, and the clamping plate 320 pushes the fixture 100, so that the transfer frame 316 drives the fixture 100 to move more smoothly.

[0054] Reference Figure 4 and Figure 5 A limiting rod 321 is fixedly connected to the connecting cross plate 317, and the limiting rod 321 extends upward to approximately the height of a single fixture 100. The side wall of the limiting rod 321 extends to the edge of the loading track 21. Two limiting rods 321 are provided in parallel with each other. When the transfer rack 316 drives a fixture 100 to move downward to return the material, the limiting rod 321 can limit the fixture 100 on the loading track 21 to prevent the fixture 100 on the loading track 21 from detaching from the loading track 21.

[0055] Reference Figure 5 and Figure 6 A fixed plate 60 is fixedly connected to one side of the fixed seat 10, and a pushing mechanism 40 is arranged on the fixed plate 60. The pushing mechanism 40 includes a synchronous lifting plate 41 arranged on the fixed plate 60, a moving block 42 slidingly connected to the synchronous lifting plate 41 in the horizontal direction, and a pushing plate 43 fixedly connected to the moving block 42. The pushing plate 43 is arranged between the loading track 21 and the unloading track 23 in the vertical direction. When the transfer frame 316 drives the fixture 100 to move between the pushing loading track 21 and the unloading track 23, the pushing plate 43 is arranged opposite to the opening of the fixture 100, and the transfer frame 316 is controlled to move to a position where a single lead frame is flush with the pushing plate 43. The moving block 42 drives the pushing plate 43 to slide, and the pushing plate 43 moves toward the fixture 100. The pushing plate 43 can be used to push the lead frame to the equipment of the next production process.

[0056] Reference Figure 6, a second synchronous belt drive structure is provided on the synchronous lifting plate 41, and the moving block 42 is fixedly connected to the belt in the second synchronous belt drive structure, and the second synchronous belt drive structure is used to drive the moving block 42 to slide on the synchronous lifting plate 41. Two limit columns 44 are fixedly connected to the synchronous lifting plate 41, and the limit columns 44 protrude from the surface of the synchronous lifting plate 41. The two limit columns 44 play a role of limiting and blocking the moving block 42. The distance between the two limit columns 44 is the moving stroke of the moving block 42, and the section closer to the transport mechanism 20 is the end of the moving stroke, and the other end is the starting end of the moving stroke. When the moving block 42 moves to the end of the moving stroke, the lead frame can be completely separated from the fixture 100.

[0057] Reference Figure 6 Two travel switches 45 are fixedly connected to the synchronous lifting plate 41, and a sensing plate 46 is fixedly connected to the moving block 42. The sensing plate 46 extends toward the sensing position of the travel switch 45. During the movement of the moving block 42, the moving block 42 can drive the sensing plate 46 to move to the sensing position of the travel switch 45. When one of the travel switches 45 senses the sensing plate 46, the travel switch 45 sends a signal to the control system, and the control system sends an instruction to the driving member in the second synchronous belt drive structure to change the driving direction of the driving member in the second synchronous belt drive structure, thereby realizing the reciprocating movement of the moving block 42.

[0058] After the push plate 43 pushes a single lead frame to separate from the jig 100, the jig 100 moves in the vertical direction so that the horizontal position of the next lead frame is opposite to the push plate 43. At this time, the push plate 43 needs to be withdrawn from the jig 100 to facilitate the transfer rack 316 to drive the jig 100 to move downward, and the moving block 42 drives the push plate 43 to move from the end of the moving stroke to the starting end of the moving stroke.

[0059] Reference Figure 6 In order to make the push plate 43 and the transfer rack 316 move synchronously in the vertical direction, the synchronous lifting plate 41 is slidably connected to the fixed plate 60 in the vertical direction. A slide groove is provided on the fixed plate 60, and a slider matched with the slide groove is fixedly connected to the synchronous lifting plate 41. The slider and the slide groove are slidably engaged with each other.

[0060] Reference Figure 6 A limiting member 47 is provided on the fixed plate 60, and a limiting groove 411 is provided on the synchronous lifting plate 41. The limiting groove 411 includes a guiding portion and a clamping portion. The guiding portion is arranged in an arc shape. The limiting member 47 cooperates with the guiding portion and the clamping portion. When the limiting member 47 is clamped with the clamping portion, the horizontal height of the pushing plate 43 is flush with the pushing position of the lead frame. When the limiting member 47 is separated from the clamping portion, the synchronous lifting plate 41 is separated from the limiting force, and the synchronous lifting plate 41 moves downward under the action of gravity.

[0061] Reference Figure 6 In order to make the synchronous lifting plate 41 move downward slowly to match the moving speed of the transfer rack 316, a damper 48 is arranged below the synchronous lifting plate 41, and the damper 48 is fixedly connected to the fixed plate 60. The piston rod of the damper 48 faces the synchronous lifting plate 41 and is fixedly connected to the synchronous lifting plate 41. There are two dampers 48. Therefore, when the limiter 47 is separated from the synchronous lifting plate 41, the synchronous lifting plate 41 can follow the moving speed of the transfer rack 316 under the action of gravity and the damping action of the damper 48. The displacement distance of the synchronous lifting plate 41 is equal to the distance between adjacent lead frames. When the synchronous lifting plate 41 moves downward, the moving block 42 can drive the push plate 43 to move at the starting end of the moving stroke, so the push plate 43 can move horizontally while the transfer rack 316 is displaced, and the transfer rack 316 can be moved without first making the push plate 43 withdraw from the fixture 100, which greatly improves the efficiency of the transfer and pushing.

[0062] Reference Figure 6 and Figure 7 The limiting member 47 includes a positioning block 471 fixedly connected to the fixed plate 60, a permanent magnet 472 slidably connected to the positioning block 471, and a reset spring 473 arranged between the positioning block 471 and the permanent magnet 472. The permanent magnet 472 is rotatably connected to the end of the synchronous lifting plate 41 with a guide wheel, and the guide wheel cooperates with the guide part to realize the upward movement and reset of the synchronous lifting plate 41.

[0063] Reference Figure 6 and Figure 7 An electromagnet 49 is fixedly connected to the synchronous lifting plate 41. The electromagnet 49 is arranged on one side of the permanent magnet 472. The magnetic poles of the electromagnet 49 and the permanent magnet 472 on the opposite side are the same. When the electromagnet 49 is energized, the permanent magnet 472 slides to the side away from the synchronous lifting plate 41 under the magnetic force of the electromagnet 49, so that the limit member 47 is separated from the limit groove 411.

[0064] Reference Figure 6, a delay switch 50 is fixedly connected to the synchronous lifting plate 41, and the delay switch 50 is electrically connected to the electromagnet 49. The delay switch 50 is located at the end of the moving stroke. When the moving block 42 moves to the end of the moving stroke, the moving block 42 abuts the delay switch 50. The delay switch 50 sends a signal to the control system, and the control system controls the electromagnet 49 to be energized. The time when the electromagnet 49 is energized is the time when the moving block 42 moves from the end of the moving stroke to the starting end of the moving stroke, that is, after the push plate 43 withdraws from the fixture 100, the electromagnet 49 loses power, and the permanent magnet 472 moves toward the synchronous lifting plate 41 under the action of the reset spring 473. Under the guidance of the guide part in the limit groove 411, the synchronous lifting plate 41 moves upward, and the permanent magnet 472 is engaged with the engaging part in the limit groove 411, that is, the push plate 43 can be restored to the pusher level.

[0065] Reference Figure 6 In order to make the pushing plate 43 return to the pushing horizontal position more quickly, a booster cylinder 51 is arranged under the synchronous lifting plate 41. The booster cylinder 51 is fixedly connected to the fixed plate 60, and the end of the piston rod of the booster cylinder 51 is facing the synchronous lifting plate 41. After the electromagnet 49 loses power, the control system sends an instruction to the air control system of the booster cylinder 51 to start the booster cylinder 51, so that the piston rod of the booster cylinder 51 pushes against the synchronous lifting plate 41, so that the synchronous lifting plate 41 moves upward more quickly.

[0066] When all lead frames in the jig 100 on the transfer rack 316 are removed, the transfer rack 316 drives the jig 100 to move to one side of the unloading track 23, and the bottom wall of the jig 100 abuts against the support slide 25 in the unloading track 23. At this time, the horizontal unloading assembly 33 is started to push the jig 100 into the unloading track 23.

[0067] Reference Figure 8 The horizontal stripping assembly 33 includes a driving cylinder 331 fixedly connected to the fixed seat 10, a sliding frame 332 fixedly connected to the piston rod of the driving cylinder 331, and a stripping plate 333 fixedly connected to the sliding frame 332. The piston rod of the driving cylinder 331 faces the loading end of the unloading track 23. When the driving cylinder 331 is started, the driving cylinder 331 drives the sliding frame 332 to move, and the sliding frame 332 drives the stripping plate 333 to push the fixture 100, and push the fixture 100 from the opening side of the supporting arm 318 to the unloading track 23.

[0068] The implementation principle of the stacked lead frame synchronous push loading equipment is:

[0069] Arrange the jig 100 loaded with the lead frame and place it on the loading track 21, start the lifting drive component, and the driving motor 311 drives the driving screw 312 to rotate. The driving screw 312 drives the driving plate 314 to move upward through the nut seat 313, and then the driving plate 314 drives the transfer frame 316 to move upward, so that the transfer frame 316 moves to one side of the loading track 21, and ensures that the supporting space of the supporting arm 318 corresponds to the jig 100.

[0070] The push block 222 is driven to move in the loading track 21, and the push block 222 pushes the fixture 100 to move to the transfer rack 316, and a single fixture 100 moves to the transfer rack 316. The transfer rack 316 is then driven to move downward, so that the level of the bottom lead frame in the fixture 100 is the same as the level of the push plate 43.

[0071] Then, the moving block 42 is moved horizontally on the synchronous lifting plate 41, and the moving block 42 drives the push plate 43 to slide, and the push plate 43 moves toward the fixture 100. The push plate 43 can be used to push the lead frame to the equipment of the next production process. At this time, the moving block 42 drives the induction plate to move to the sensing position of the travel switch 45 on the side closer to the transportation mechanism 20, and the moving block 42 abuts the delay switch 50. The travel switch 45 sends an instruction to move the moving block 42 to the starting end of the moving stroke, and the delay switch 50 sends a signal to the control system, and the control system controls the electromagnet 49 to energize, so that the push plate 43 withdraws from the fixture 100 and moves downward.

[0072] The time when the electromagnet 49 is energized is the time when the moving block 42 moves from the end of the moving stroke to the starting end of the moving stroke, that is, after the push plate 43 withdraws from the fixture 100, the electromagnet 49 loses power, and the permanent magnet 472 moves toward the synchronous lifting plate 41 under the action of the reset spring 473. Under the guidance of the guide part in the limit groove 411, the synchronous lifting plate 41 moves upward, and the permanent magnet 472 is engaged with the engaging part in the limit groove 411, that is, the push plate 43 can be restored to the horizontal position of the material pushing. At this time, the transfer frame 316 drives the fixture 100 to move downward to the horizontal position of the next lead frame to achieve repeated material pushing.

[0073] When all lead frames in the jig 100 on the transfer rack 316 are removed, the transfer rack 316 drives the jig 100 to move to one side of the unloading track 23, and the bottom wall of the jig 100 abuts against the support slide 25 in the unloading track 23. At this time, the horizontal unloading assembly 33 is started to push the jig 100 into the unloading track 23.

[0074] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0075] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0076] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0077] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A stacking lead frame synchronous pushing feeding device, characterized in that: include: A transport mechanism (20), the transport mechanism (20) comprising a loading track (21) and a unloading track (23) distributed up and down, the loading track (21) being provided with a transport assembly for transporting the jig (100), the loading track (21) and the unloading track (23) both having a loading end and a unloading end; A transfer mechanism (30) is arranged on one side of the transport mechanism (20), the transfer mechanism (30) comprising a transfer frame (316) movable in a vertical direction, the transfer frame (316) being adjacent to a discharge end of the feed track (21) and a feed end of the discharge track (23) so as to facilitate the transfer of the jig (100); A pushing mechanism (40) is arranged on one side of the transfer mechanism (30), the pushing mechanism (40) comprising a pushing plate (43) that moves in a horizontal direction, the pushing plate (43) being arranged opposite to the opening of the jig (100) and being used to push the lead frame in the jig (100) to realize the removal of the lead frame; A fixed plate (60) is fixedly arranged on one side of the transport mechanism (20) and the transfer mechanism (30), the pushing mechanism (40) comprises a synchronous lifting plate (41) slidably arranged on the fixed plate (60) in a vertical direction, a moving block (42) is slidably arranged on the synchronous lifting plate (41), and the pushing plate (43) is fixedly connected to the moving block (42); A limiting member (47) is arranged on the fixed plate (60), and a limiting groove (411) is provided on the synchronous lifting plate (41). When the limiting member (47) is engaged with the limiting groove (411), the pushing plate (43) is kept at a pushing horizontal position. A damper (48) is fixedly arranged on the fixed plate (60), and the damper (48) is arranged below the synchronous lifting plate (41). The piston rod of the damper (48) is fixedly connected to the lower end of the synchronous lifting plate (41). When the limiting member (47) is separated from the limiting groove (411), the synchronous lifting plate (41) and the transfer rack (316) move downward synchronously, and the displacement distance of the synchronous lifting plate (41) is equal to the distance between adjacent lead frames. The limiting member (47) comprises a positioning block (471) fixedly arranged on the fixed plate (60), a permanent magnet (472) slidably connected to the positioning block (471), and a return spring (473) arranged between the positioning block (471) and the permanent magnet (472); The synchronous lifting plate (41) is provided with a time delay switch (50), the time delay switch (50) is located at the end of the moving stroke of the moving block (42), and the time delay switch (50) is closer to the transportation mechanism (20), and the synchronous lifting plate (41) is provided with an electromagnet (49) electrically connected to the time delay switch (50), and the electromagnet (49) has the same magnetic pole on the opposite side to the permanent magnet (472); When the moving block (42) contacts the delay switch (50), the delay switch (50) sends a signal to control the electromagnet (49) to start, so that the permanent magnet (472) is separated from the limit groove (411) under the magnetic force of the electromagnet (49), and the synchronous lifting plate (41) moves downward under the action of gravity.

2. The stacked lead frame synchronous pushing material loading device according to claim 1, characterized in that: The loading equipment also includes a fixed seat (10), the fixed seat (10) is arranged on one side of the transportation mechanism (20), the transfer frame (316) is slidably arranged on the fixed seat (10), the transfer frame (316) includes a connecting cross plate (317) and a supporting arm (318) fixedly arranged on the connecting cross plate (317), and the supporting arm (318) is arranged in an open groove shape on the side facing the transportation mechanism (20) to form a supporting space for supporting the fixture (100).

3. The stacked lead frame synchronous pushing material feeding device according to claim 2, characterized in that: The fixed seat (10) is provided with a lifting drive component and a horizontal material return component (33), the lifting drive component is used to drive the transfer frame (316) to rise and fall on the fixed seat (10), the horizontal material return component (33) is arranged on the side away from the opening groove of the supporting arm (318), and the horizontal material return component (33) is used to transfer the jig (100) from the supporting arm (318) to the unloading track (23).

4. The stacked lead frame synchronous pushing material loading device according to claim 3, characterized in that: The lifting drive component comprises a driving screw (312) rotatably connected to a fixed seat (10), a nut seat (313) threadably matched with the driving screw (312), and a driving plate (314) fixedly connected to the nut seat (313); a guide rod (315) is fixedly connected to the fixed seat (10); the driving plate (314) is slidably sleeved on the guide rod (315); and the supporting arm (318) is fixedly connected to the driving plate (314).

5. The stacked lead frame synchronous pushing material loading device according to claim 3, characterized in that: The horizontal material stripping assembly (33) comprises a driving cylinder (331) fixedly connected to a fixed seat (10), a sliding frame (332) fixedly connected to a piston rod of the driving cylinder (331), and a material stripping plate (333) fixedly connected to the sliding frame (332), wherein the piston rod of the driving cylinder (331) faces the loading end of the unloading track (23).

6. The stacked lead frame synchronous pushing material loading device according to claim 1, characterized in that: The conveying assembly comprises a stepping plate (221) slidably connected to the feeding track (21) and a push block (222) fixedly connected to the stepping plate (221), wherein the push block (222) is used to push the fixture (100) to move the feeding; One side of the pushing block (222) for pushing materials is connected to a floating block (223) via a buffer spring (224).

7. The stacked lead frame synchronous pushing material loading device according to claim 1, characterized in that: The fixed plate (60) is provided with a booster cylinder (51), which is arranged below the synchronous lifting plate (41), and the piston rod of the booster cylinder (51) faces the synchronous lifting plate (41). When the electromagnet (49) loses power, the booster cylinder (51) is started to push the synchronous lifting plate (41).

Images