Lead frame stacking device

Abstract

The utility model provides a lead frame stacking device which is arranged at the output end of a conveyor belt type cleaning machine and comprises a rotating disc and a stacking assembly built on one side of the rotating disc. A plurality of transfer assemblies are arranged on the rotating disc, the rotating disc comprises a transfer frame used for bearing the lead frames output by the conveyor belt type cleaning machine, and a push plate is movably arranged on one side of the transfer frame and used for pushing the lead frames on the transfer frame to the stacking assembly; and the stacking assembly comprises a conveying belt and is used for bearing the lead frames on the transfer frame, and a collecting frame is arranged at the output end of the conveying belt. By using the scheme provided by the invention, the cleaned lead frame can be automatically collected, collision during collection is avoided, meanwhile, the automation degree is improved, and the efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of lead frame production auxiliary equipment, in particular to a lead frame stacking device. Background Art

[0002] Lead frames are the main carriers for producing semiconductor devices, and their cleanliness is highly required. Therefore, during the production process of lead frames, they need to be cleaned. Existing cleaning methods mostly use sheet cleaning, where the lead frames are first placed on the input end of the conveyor belt, and then the lead frames are transported to the conveyor belt cleaning machine for cleaning. After cleaning, the lead frames are output in rows through the output end of the conveyor belt cleaning machine, and then the output lead frames are collected and stacked.

[0003] The existing collection and stacking methods are mostly done manually, which is not only inefficient, but also easily causes secondary pollution when workers stack them by hand. There are also automatic collection mechanisms, which are arranged on one side of the output end of the conveyor belt cleaning machine, and a collection frame is arranged on the other side, and a push plate is arranged along the movement perpendicular to the output end to push the rows of lead frames output by the conveyor belt cleaning machine into the collection frame. Although this method is more efficient, the lead frames are easily squeezed during the pushing process, causing the lead frames to deform and affecting their quality. Utility Model Content

[0004] In order to solve the above-mentioned deficiencies in the prior art, the utility model provides a lead frame stacking device, which is arranged at the output end of the belt cleaning machine to automatically collect the cleaned lead frames to avoid collision during collection, while improving the degree of automation and high efficiency.

[0005] In order to achieve the purpose of this utility model, the following scheme is proposed:

[0006] A lead frame stacking device is arranged at the output end of a conveyor type cleaning machine, comprising: a turntable and a stacking assembly arranged at one side of the turntable;

[0007] The turntable is provided with a plurality of transfer assemblies, including a transfer rack for receiving the lead frame outputted by the conveyor-type cleaning machine, and a push plate is movable on one side of the transfer rack for pushing the lead frame on the transfer rack to the stacking assembly;

[0008] The stacking assembly includes a conveyor belt for receiving the lead frame on the transfer rack, and a collecting frame is provided at the output end of the conveyor belt.

[0009] Furthermore, the length of the transfer rack is consistent with the width of the output end of the conveyor belt cleaning machine.

[0010] Furthermore, grooves are arranged in a circular array on the turntable, and a baffle assembly is vertically arranged on the other side of the transfer frame, and the baffle assembly is slidably matched with the grooves.

[0011] Furthermore, the baffle assembly includes a baffle, a group of guide rods are provided on one side of the baffle, one end of the guide rod passes through the bottom of the groove and is provided with a horizontal plate, one side of the horizontal plate is provided with a support rod, one end of the support rod is provided with an inclined plate, the bottom end of the inclined plate faces the rotation direction of the turntable, one side of the conveyor belt is provided with a stopper, the bottom surface of the output end of the conveyor belt cleaning machine is provided with a protrusion, and the stopper and the protrusion are on the movement trajectory of the inclined plate, and a spring is passed through the guide rod, one end of the spring is connected to one side of the baffle, and the other end abuts the bottom of the groove.

[0012] Furthermore, a placement area is recessed on one side of the transfer rack, a push plate is arranged on one side of the placement area, an opening is arranged on the other side of the placement area, and a cylinder is arranged on one side of the push plate.

[0013] The beneficial effects of the utility model are:

[0014] The solution of the present application is arranged at the output end of a conveyor-type cleaning machine, and a transfer rack is used to transfer the cleaned lead frame and realize the reversal of the lead frame, so that the reversed lead frame is output in a row on the conveyor belt, so that the lead frame output from the conveyor belt can automatically enter the collection frame for automatic stacking, thereby replacing manual operation and avoiding the lead frame from being squeezed and deformed during the stacking process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present invention.

[0016] Figure 1 A schematic diagram of an application scenario of the present application is shown.

[0017] Figure 2 This application shows Figure 1 A local enlarged schematic diagram of point A.

[0018] Figure 3 A schematic diagram showing the location of the stopper of the present application is shown.

[0019] Figure 4 A schematic diagram showing the location of the bumps of the present application is shown.

[0020] Figure 5 A schematic diagram of the transfer rack structure of the present application is shown.

[0021] Figure 6 A schematic diagram of the turntable structure of the present application is shown.

[0022] Markings in the figure: conveyor cleaning machine - 1, bump - 11, lead frame - 2, turntable - 100, transfer assembly - 110, transfer frame - 111, push plate - 112, placement area - 113, cylinder - 114, groove - 120, baffle assembly - 130, baffle - 131, guide rod - 132, cross plate - 133, support rod - 134, inclined plate - 135, spring - 136, push plate - 112, stacking assembly - 200, conveyor belt - 210, collection frame - 211, block - 212. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings, but the embodiments described in the utility model are only part of the embodiments of the utility model, rather than all the embodiments.

[0024] like Figure 1-Figure 6 As shown, this embodiment provides a lead frame stacking device, which is arranged at the output end of a conveyor-type cleaning machine 1 , and includes: a turntable 100 and a stacking assembly 200 arranged at one side of the turntable 100 .

[0025] Specifically, Figure 1 , Figure 5 As shown, the top surface of the turntable 100 is provided with a plurality of transfer assemblies 110 in a circular array, and the transfer assembly 110 includes a transfer frame 111, so that the length of the transfer frame 111 is consistent with the width of the output end of the conveyor-type cleaning machine 1, so as to ensure that the transfer frame 111 can transfer all the lead frames 2 output by the conveyor-type cleaning machine 1. A push plate 112 is provided on one side of the transfer frame 111 moving toward the center of the turntable 100 to accommodate lead frames 2 of different lengths. The transfer frame 111 is used to receive the lead frames 2 output by the conveyor-type cleaning machine 1; the push plate 112 is used to push the lead frames 2 on the transfer frame 111 onto the stacking assembly 200, thereby changing the conveying direction of the lead frames 2, so that the lead frames 2 are output in one column instead of in one row.

[0026] The stacking assembly 200 includes a conveyor belt 210, and a collection frame 211 is provided at the output end of the conveyor belt 210. The conveyor belt 210 is used to receive the lead frame 2 pushed out from the transfer frame 111 by the push plate 112, so that the lead frame 2 is output in sequence in a row along the conveying direction of the conveyor belt 210, and enters the collection frame for automatic stacking, so as to replace manual operation and avoid deformation caused by squeezing of the lead frame 2 during the collection process.

[0027] When in use, one of the transfer racks 111 is made to correspond to the output end of the conveyor type cleaning machine 1. After the output end of the conveyor type cleaning machine 1 outputs the cleaned lead frame 2, the transfer rack 111 remains stationary. When the lead frame 2 completely leaves the output end of the conveyor type cleaning machine 1, the turntable 100 is started to drive the transfer rack 111 that has received the lead frame 2 to rotate, and the next transfer rack 111 enters the output end of the conveyor type cleaning machine 1 to receive the lead frame 2 output from the next row.

[0028] When the transfer rack 111 carrying the lead frame 2 rotates to one side of the conveyor belt 210, the push plate 112 is moved to push the lead frame 2 along the width direction of the lead frame 2 on the transfer rack 111, so that the lead frame 2 enters the conveyor belt 210 in a row. The conveyor belt 210 transports the lead frame 2 to the collection frame 211 in sequence to realize automatic stacking of the lead frame 2.

[0029] Specifically, Figure 1-Figure 2 , Figure 6 As shown, grooves 120 are arranged in a circumferential array on the turntable 100, and the number of the grooves 120 is consistent with the number of the transfer racks 111. A baffle assembly 130 is vertically arranged on one side of the transfer rack 111 away from the center of the turntable 100, and the baffle assembly 130 is slidably matched with the grooves 120.

[0030] During use, when the transfer rack 111 moves to the output end of the belt-feed cleaning machine 1, the baffle assembly 130 moves downward to allow the lead frame 2 to smoothly enter the transfer rack 111; when the transfer rack 111 moves out of the output end of the belt-feed cleaning machine 1, the baffle assembly 130 moves upward to limit one end of the lead frame 2 on the transfer rack 111 to prevent the lead frame 2 from being thrown out of the transfer rack 111 during the rotation of the turntable 100; when the transfer rack 111 moves to one side of the conveyor belt 210, the baffle assembly 130 moves downward to allow the push plate 112 to smoothly push the lead frame 2 onto the conveyor belt 210.

[0031] Specifically, Figure 2-Figure 4As shown, the baffle assembly 130 includes a baffle 131, a guide rod 132, a cross plate 133, a support rod 134, an inclined plate 135, and a spring 136. A group of guide rods 132 are arranged at intervals on the bottom surface of the baffle 131 to prevent the baffle 131 from rotating during movement. The lower end of the guide rod 132 is inserted into the bottom of the groove 120, the cross plate 133 is connected to the lower end of the guide rod 132, and the support rod 134 is arranged at both ends of the cross plate 133; the two ends of the inclined plate 135 are respectively connected to the support rod 134, the inclined edge of the inclined plate 135 faces upward, and the bottom end of the inclined edge is consistent with the rotation direction of the turntable 100, and the spring 136 is inserted on the guide rod 132, the upper end of the spring 136 is connected to the bottom surface of the baffle 131, and the lower end abuts against the inner bottom surface of the groove 120. A stopper 212 is provided on the bottom surface of the conveyor belt 210, and the stopper 212 is located on the side close to the turntable 100. A protrusion 11 is provided on the bottom surface of the output end of the conveyor belt cleaning machine 1, and the protrusion 11 is located on the other side close to the turntable 100, and the stopper 212 and the protrusion 11 are on the movement trajectory of the inclined plate 135.

[0032] When the transfer rack 111 moves to the output end of the conveyor cleaning machine 1, the inclined plate 135 moves the guide rod 132 downward under the obstruction of the protrusion 11. When the length direction of the transfer rack 111 is aligned with the output end of the conveyor cleaning machine 1, the highest end of the inclined plate 135 enters under the protrusion 11, and at this time, the baffle 131 moves downward into the recess 120 to prevent the baffle 131 from obstructing the lead frame 2 output by the conveyor cleaning machine 1 from entering the transfer rack 111.

[0033] When the lead frame 2 completely leaves the output end of the conveyor cleaning machine 1, the turntable 100 drives the transfer rack 111 to rotate, so that the highest end of the inclined plate 135 is separated from the protrusion 11 and automatically moves upward under the action of the spring 136, so that the baffle 131 moves upward, thereby limiting the end of the lead frame 2 on the transfer rack 111 toward the outer periphery of the turntable 100.

[0034] When the turntable 100 drives the transfer rack 111 to move to one side of the conveyor belt 210, the inclined plate 135 moves the guide rod 132 downward under the obstruction of the stop block 212. When the length direction of the transfer rack 111 is consistent with the conveying direction of the conveyor belt 210, the highest end of the inclined plate 135 enters directly under the stop block 212. At this time, the baffle 131 moves downward into the recess 120 to prevent the baffle 131 from obstructing the push plate 112 from pushing the lead frame 2 onto the conveyor belt 210.

[0035] Specifically, Figure 1 , Figure 5As shown, in order to prevent the lead frame 2 located at the edge of the transfer frame 111 from falling out when the push plate 112 pushes the lead frame 2 out of the transfer frame 111, a placement area 113 is recessed on the top surface of the transfer frame 111, and the push plate 112 is arranged on the side of the placement area 113 facing the center of the turntable 100, and the other side of the placement area 113 is provided with an opening, and a cylinder 114 is provided on the side of the push plate 112 facing the center of the turntable 100, and the cylinder 114 is installed on the side of the transfer frame 111 facing the center of the turntable 100.

[0036] The above is only a preferred embodiment of the utility model, and does not mean that it is the only one or limit the utility model. Those skilled in the art should understand that various changes or equivalent replacements made to the utility model without departing from the scope of the utility model are within the scope of protection of the utility model.

Claims

1. A lead frame stacking device, arranged at the output end of a conveyor type cleaning machine (1), characterized in that: include: A turntable (100) and a stacking assembly (200) disposed on one side of the turntable (100); A plurality of transfer assemblies (110) are provided on the turntable (100), comprising a transfer rack (111) for receiving the lead frame (2) outputted from the conveyor-type cleaning machine (1), and a push plate (112) is movably provided on one side of the transfer rack (111) for pushing the lead frame (2) on the transfer rack (111) to the stacking assembly (200); The stacking assembly (200) comprises a conveyor belt (210) for receiving the lead frame (2) on the transfer rack (111); a collecting frame (211) is provided at the output end of the conveyor belt (210).

2. The lead frame stacking device according to claim 1, characterized in that: The length of the transfer rack (111) is consistent with the width of the output end of the conveyor belt cleaning machine (1).

3. The lead frame stacking device according to claim 1, characterized in that: Grooves (120) are arranged in a circumferential array on the rotating disk (100), and a baffle assembly (130) is arranged vertically on the other side of the transfer frame (111), and the baffle assembly (130) is slidably matched with the grooves (120).

4. The lead frame stacking device according to claim 3, characterized in that: The baffle assembly (130) comprises a baffle (131), one side of the baffle (131) is provided with a group of guide rods (132), one end of the guide rod (132) passes through the bottom of the groove (120) and is provided with a transverse plate (133), one side of the transverse plate (133) is provided with a support rod (134), one end of the support rod (134) is provided with an inclined plate (135), the bottom end of the inclined plate (135) faces the rotation direction of the turntable (100), one side of the conveyor belt (210) is provided with a stopper (212), the bottom surface of the output end of the conveyor belt cleaning machine (1) is provided with a protrusion (11), and the stopper (212) and the protrusion (11) are on the movement track of the inclined plate (135), and the guide rod (132) is provided with a spring (136), one end of the spring (136) is connected to one side of the baffle (131), and the other end abuts against the bottom of the groove (120).

5. The lead frame stacking device according to claim 3, characterized in that: A placement area (113) is recessed on one side of the transfer rack (111), a push plate (112) is arranged on one side of the placement area (113), an opening is arranged on the other side of the placement area (113), and a cylinder (114) is arranged on one side of the push plate (112).

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