Plastic package frame screeding equipment

Abstract

Plastic package frame screeding equipment comprises a supporting plate, a conveying assembly and a screeding assembly. The two supporting plates are symmetrically arranged, and a bearing seat is arranged between the supporting plates; the conveying assembly comprises two side plates which are arranged on the inner side of the supporting plate and move oppositely, limiting plates moving in the vertical direction are arranged on the side plates, and two rows of conveying wheels with the adjustable spacing are arranged on the inner sides of the limiting plates and used for conveying the plastic packaging frame; the screeding assembly comprises a pressure-bearing table detachably installed on the bearing seat, a plurality of grooves are formed in the pressure-bearing table in the width direction of the pressure-bearing table, a stamping table moving in the vertical direction is arranged above the pressure-bearing table, and a plurality of pressing blocks are arranged at the bottom of the stamping table in a rectangular array mode and used for being matched with the grooves so as to screed the plastic package frame. A baffle is further arranged at one end of the bearing base and connected to the movable end of the vertical lifting mechanism, and the vertical lifting mechanism is installed below the bearing base. The device can adapt to plastic package frames of different sizes, is high in universality, reduces the equipment cost, and is higher in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic device production, and in particular relates to a plastic encapsulation frame rib punching device. Background Art

[0002] In the production process of integrated circuits, it is necessary to fix a chip on a lead frame, then perform plastic encapsulation on the lead frame, and then perform rib punching on the plastic encapsulated frame to form a single chip plastic encapsulated body. In actual operation, multiple rib punching operations are usually required to remove the chip plastic encapsulated body from the plastic encapsulated frame. In the prior art, in order to improve production efficiency, rollers are usually used to convey the plastic encapsulated frame to facilitate the rapid transfer of the plastic encapsulated frame to the next process. However, the position of the rollers is relatively fixed, and only plastic encapsulated frames of a certain specification can be conveyed. Usually, a device can only perform rib punching operations on a limited number of or even only one size specification of plastic encapsulated frames, which results in low versatility of the device. And according to different product requirements, lead frames of different sizes are selected, which requires the use of different rib punching devices, resulting in an increase in equipment costs. Summary of the Utility Model

[0003] In view of the deficiencies of the above related prior art, the present application provides a plastic encapsulation frame rib punching device, which can adapt to plastic encapsulated frames of different sizes, has high versatility, reduces equipment costs, and has strong practicability.

[0004] To achieve the above object, the present utility model adopts the following technologies:

[0005] A plastic encapsulation frame rib punching device includes: a support plate, a conveying component, and a rib punching component.

[0006] There are two support plates, which are symmetrically arranged, and a bearing seat is provided between the support plates; the conveying component includes two side plates arranged on the inner sides of the support plates and moving towards each other, and a limiting plate moving in the vertical direction is provided on the side plates. Two rows of conveying wheels with adjustable spacing are provided inside the limiting plate for conveying the plastic encapsulated frame; the rib punching component includes a pressure bearing table detachably installed on the bearing seat, a plurality of grooves are provided on the pressure bearing table along its width direction, and a punching table moving in the vertical direction is provided above the pressure bearing table. A plurality of pressing blocks are arranged in a rectangular array at the bottom of the punching table for cooperating with the grooves to punch ribs on the plastic encapsulated frame.

[0007] Further, a plurality of guide rods are arranged between the support plates along their length direction, the side plates are sleeved on the guide rods and connected to the moving end of a bidirectional linear mechanism, and the bidirectional linear mechanism is installed below the support plates.

[0008] Further, convex plates are provided at both ends of the limiting plate, a screw rod is passed through the convex plates, the screw rod is installed on the side plates, and a nut is also sleeved on the screw rod for abutting against the bottom surface of the convex plate.

[0009] Further, the conveying wheel is rotatably mounted on the support block. The support block located below is mounted on the limit plate. A connecting rod is provided on the top surface of the support block located above. The connecting rod passes through the cross plate and is connected to the top plate at the upper end. The cross plate is mounted inside the limit plate. A first spring is also sleeved on the connecting rod. The two ends of the first spring respectively abut against the support block and the cross plate and are always in a compressed state.

[0010] Further, the conveying wheel located below is connected to the transmission shaft. The transmission shaft is rotatably mounted on the limit plate and one end penetrates through the support plate. A first rotating ring is sleeved on the transmission shaft. The first rotating ring is rotatably mounted on the bracket. The bracket is slidably mounted on the limit plate. A rotating shaft is rotatably mounted on the bracket. A second rotating ring is sleeved on the rotating shaft. A belt drive is adopted between adjacent two first rotating rings and between the second rotating ring and the first rotating ring. One end of the rotating shaft is connected to the output end of the power device.

[0011] Further, cross bars penetrate through both ends of the bracket. One end of the cross bar is connected to the limit plate. A retaining ring is provided at the other end of the cross bar. A second spring is sleeved on the cross bar. The two ends of the second spring respectively abut against the bracket and the retaining ring and are always in a compressed state. A plurality of sliding grooves are provided on the side surface of the support plate for passing through the cross bar and the transmission shaft.

[0012] Further, the pressing block is detachably mounted on the support rod. The support rod is mounted on the bottom surface of the stamping table. A plurality of T-shaped pins are also provided on the top surface of the stamping table. A lifting plate is provided on the top surface of the stamping table. A T-shaped groove is provided on the side surface of the lifting plate. The T-shaped pins are fitted in the T-shaped grooves and locked with bolts.

[0013] Further, a baffle is provided at one end of the bearing seat. The baffle is connected to the moving end of the vertical lifting mechanism. The vertical lifting mechanism is mounted below the bearing seat.

[0014] Further, a plurality of through grooves are provided on both sides of the bearing seat along its length direction. The length direction of the through grooves is parallel to the width direction of the bearing seat for passing through the rollers.

[0015] The beneficial effects of the present utility model are as follows: The conveying wheel is mounted on the limit plate that can move towards each other and can move in the vertical direction, so that the position of the conveying wheel can be adjusted to adapt to plastic encapsulation frames of different sizes; and the pressure-bearing table, the stamping table, and the pressing block are all detachably connected, so as to be replaced according to the size of the plastic encapsulation frame, further improving the versatility and reducing the equipment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are only for illustrating the selected embodiments, not all possible implementation schemes, and are not intended to limit the scope of the present utility model.

[0017] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present application.

[0018] Figure 2 This is a three-dimensional schematic diagram of the conveying component of the embodiment of the present application.

[0019] Figure 3 It is Figure 2 an enlarged schematic view of area A of

[0020] Figure 4 It is Figure 2 an enlarged schematic view of area B of

[0021] Figure 5 This is an installation schematic diagram of the stamping plate of the embodiment of the present application. Specific embodiments

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will describe the embodiments of the present utility model in detail with reference to the accompanying drawings. However, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0023] As Figures 1-5 shown, this embodiment provides a plastic-encapsulated frame ribbing device, including: a support plate 100, a conveying component 200, and a ribbing component 300.

[0024] There are two support plates 100, which are symmetrically arranged, and a bearing seat 101 is provided between the support plates 100; the conveying component 200 includes two side plates 201 disposed inside the support plates 100 and moving towards each other, a limiting plate 202 moving in the vertical direction is provided on the side plates 201, and two rows of conveying wheels 203 with adjustable spacing are provided inside the limiting plate 202 for conveying the plastic-encapsulated frame; the ribbing component 300 includes a pressure-bearing table 301 detachably installed on the bearing seat 101, a plurality of grooves 302 are provided on the pressure-bearing table 301 along its width direction, a stamping table 303 moving in the vertical direction is provided above the pressure-bearing table 301, and a plurality of pressing blocks 304 are provided at the bottom of the stamping table 303 in a rectangular array for cooperating with the grooves 302 to rib the plastic-encapsulated frame.

[0025] Specifically, a baffle 104 is provided at one end of the bearing seat 101, the baffle 104 is connected to the moving end of a vertical lifting mechanism, and the vertical lifting mechanism is installed below the bearing seat 101. After the plastic-encapsulated frame is conveyed to the pressure-bearing table 301 by the conveying wheels 203, the baffle 104 will abut against one end of the plastic-encapsulated frame to block its continued movement, thus facilitating the ribbing operation. After the ribbing is completed, the baffle 104 will move downward under the drive of the vertical lifting mechanism, and then the plastic-encapsulated frame will be conveyed to the next process.

[0026] Specifically, a plurality of guide rods 102 are provided between the support plates 100 along their length direction. The side plates 201 are sleeved on the guide rods 102 and are connected to the moving end of the bidirectional linear mechanism. The bidirectional linear mechanism is installed below the support plates 100. By means of the bidirectional linear mechanism, the two side plates 201 can be driven to move towards each other or away from each other, and the limiting plates 202 are driven to move together, so as to adapt to plastic encapsulation frames of different widths.

[0027] Specifically, different integrated circuits have different thicknesses. Therefore, when the plastic encapsulation frame is located on the pressure-bearing table 301, the distances between the edges of the plastic encapsulation frame and the pressure-bearing table 301 are also different. Therefore, it is necessary to adjust the height of the conveying wheels 203. Convex plates 204 are provided at both ends of the limiting plate 202. Screws 205 are inserted through the convex plates 204. The screws 205 are installed on the side plates 201. Nuts are also sleeved on the screws 205 and are used to abut against the bottom surfaces of the convex plates 204. By rotating the nuts, the side plates 202 can be driven to move in the vertical direction, so as to adjust the distance between the conveying wheels 203 and the top surface of the stamping table 303 to adapt to plastic encapsulation frames carrying integrated circuits of different thicknesses.

[0028] Specifically, the conveying wheels 203 are rotatably installed on the support blocks 206. The support block 206 located below is installed on the limiting plate 202. A connecting rod 207 is provided on the top surface of the support block 206 located above. The connecting rod 207 is inserted through the cross plate 208 and is connected to the top plate 209 at the upper end. The cross plate 208 is installed inside the limiting plate 202. A first spring 210 is also sleeved on the connecting rod 207. The two ends of the first spring 210 respectively abut against the support block 206 and the cross plate 208 and are always in a compressed state, so that the conveying wheels 203 have a moving margin in the vertical direction, so as to adapt to plastic encapsulation frames of different thicknesses. And under the action of the first spring 210, the upper support block 206 always has a tendency to move towards each other. Therefore, when the plastic encapsulation frame is conveyed, the upper conveying wheels 203 will apply a downward force to the plastic encapsulation frame, so as to prevent the plastic encapsulation frame from slipping during conveying. And after the rib punching is completed, the pressing block 304 may drive the plastic encapsulation frame to move upward together. The upper conveying wheels 203 can also play a role in limiting the vertical direction of the plastic encapsulation frame.

[0029] Specifically, the lower conveying wheel 203 is connected to the transmission shaft 211. The transmission shaft 211 is rotatably installed on the limiting plate 202, and one end passes through the support plate 100. A first rotating ring 212 is sleeved on the transmission shaft 211. The first rotating ring 212 is rotatably installed on the bracket 213. The bracket 213 is slidably installed on the limiting plate 202. A rotating shaft 217 is rotatably installed on the bracket 213. A second rotating ring 218 is sleeved on the rotating shaft 217. Belt drives are adopted between adjacent two first rotating rings 212 and between the second rotating ring 218 and the first rotating ring 212. One end of the rotating shaft 217 is connected to the output end of the power device. A keyway fit can be adopted between the first rotating ring 212 and the transmission shaft 211, so as to ensure that while the first rotating ring 212 drives the transmission shaft 211 to rotate, relative sliding can occur between the two, enabling the transmission shaft 211 to maintain power transmission during the process of synchronously moving with the limiting plate 202.

[0030] Specifically, cross bars 214 penetrate through both ends of the bracket 213. One end of the cross bar 214 is connected to the limiting plate 202, so that when the limiting plate 202 moves upward, the bracket 213 can also move upward to ensure power transmission. And a retaining ring 215 is provided at the other end of the cross bar 214. A second spring 216 is sleeved on the cross bar 214. Both ends of the second spring 216 respectively abut against the bracket 213 and the retaining ring 215 and are always in a compressed state. Under the action of the second spring 216, the bracket 213 always abuts against the side surface of the support plate 100, so that when the limiting plates 202 move away from each other, the bracket 213 will not move synchronously. When the limiting plates 202 approach each other, the second spring 216 is further compressed to avoid interference between the bracket 213 and the support plate 100. A plurality of sliding grooves 103 are provided on the side surface of the support plate 100 for the cross bar 214 and the transmission shaft 211 to pass through.

[0031] Specifically, the pressing block 304 is detachably installed on the support rod 305, such as by snap connection or threaded connection. The support rod 305 is installed on the bottom surface of the stamping table 303. A plurality of T-shaped pins 306 are further provided on the top surface of the stamping table 303. A lifting plate 307 is provided on the top surface of the stamping table 303. A T-shaped groove 308 is provided on the side surface of the lifting plate 307. The T-shaped pins 306 are fitted in the T-shaped grooves 308 and locked with bolts, so as to facilitate the disassembly and replacement of the pressing block and the stamping table 303.

[0032] Specifically, a plurality of through grooves 105 are provided on both sides of the bearing seat 101 along its length direction. The length direction of the through grooves 105 is parallel to the width direction of the bearing seat 101 for the conveying wheel 203 to pass through to avoid interference between the conveying wheel 203 and the bearing seat 101.

[0033] Since the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model, obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model also intends to include these changes and modifications therein.

Claims

1. A plastic encapsulation frame rib punching device, characterized in that, Including: There are two support plates (100), which are symmetrically arranged. A bearing seat (101) is arranged between the support plates (100). A conveying assembly (200) includes two side plates (201) arranged on the inner sides of the support plates (100) and moving towards each other. A limiting plate (202) moving in the vertical direction is arranged on the side plates (201). Two rows of conveying wheels (203) with adjustable spacing are arranged inside the limiting plate (202) for conveying plastic packaging frames. A rib punching assembly (300) includes a pressure-bearing platform (301) detachably installed on the bearing seat (101). A plurality of grooves (302) are arranged on the pressure-bearing platform (301) along its width direction. A punching platform (303) moving in the vertical direction is arranged above the pressure-bearing platform (301). A plurality of pressing blocks (304) are arranged at the bottom of the punching platform (303) in a rectangular array for cooperating with the grooves (302) to punch ribs on the plastic packaging frame.

2. The plastic-encapsulated frame rib punching device according to claim 1, wherein, A plurality of guide rods (102) are arranged between the support plates (100) along their length direction. The side plates (201) are sleeved on the guide rods (102) and connected to the moving end of a bidirectional linear mechanism, and the bidirectional linear mechanism is installed below the support plates (100).

3. The plastic-encapsulated frame rib punching device according to claim 1, characterized in that Convex plates (204) are arranged at both ends of the limiting plate (202). A screw rod (205) passes through the convex plates (204). The screw rod (205) is installed on the side plates (201), and a nut is also sleeved on the screw rod (205) for abutting against the bottom surface of the convex plates (204).

4. The plastic-encapsulated frame rib punching device according to claim 1, characterized in that, The conveying wheels (203) are rotatably installed on support blocks (206). The support blocks (206) located below are installed on the limiting plate (202). A connecting rod (207) is arranged on the top surface of the support blocks (206) located above. The connecting rod (207) passes through a cross plate (208) and is connected to the top plate (209) at the upper end. The cross plate (208) is installed inside the limiting plate (202). A first spring (210) is also sleeved on the connecting rod (207). Both ends of the first spring (210) respectively abut against the support blocks (206) and the cross plate (208) and are always in a compressed state.

5. The plastic-encapsulated frame rib punching device according to claim 1, characterized in that The conveying wheels (203) located below are connected to a transmission shaft (211). The transmission shaft (211) is rotatably installed on the limiting plate (202), and one end passes through the support plate (100). A first rotating ring (212) is sleeved on the transmission shaft (211). The first rotating ring (212) is rotatably installed on a bracket (213). The bracket (213) is slidably installed on the limiting plate (202). A rotating shaft (217) is rotatably installed on the bracket (213). A second rotating ring (218) is sleeved on the rotating shaft (217). Belt transmission is adopted between adjacent two first rotating rings (212) and between the second rotating ring (218) and the first rotating rings (212). One end of the rotating shaft (217) is connected to the output end of a power device.

6. The plastic-encapsulated frame rib punching device according to claim 5, characterized in that, The two ends of the bracket (213) are penetrated by cross bars (214). One end of each cross bar (214) is connected to the limit plate (202), and a retaining ring (215) is provided at the other end of the cross bar (214). A second spring (216) is sleeved on the cross bar (214), and the two ends of the second spring (216) respectively abut against the bracket (213) and the retaining ring (215), and are always in a compressed state. A plurality of sliding grooves (103) are provided on the side surface of the support plate (100) for passing through the cross bars (214) and the transmission shaft (211).

7. The plastic-encapsulated frame rib punching device according to claim 1, characterized in that, The pressing block (304) is detachably mounted on the support rod (305), and the support rod (305) is mounted on the bottom surface of the stamping table (303). A plurality of T-shaped pins (306) are further provided on the top surface of the stamping table (303). A lifting plate (307) is provided on the top surface of the stamping table (303). A T-shaped groove (308) is provided on the side surface of the lifting plate (307). The T-shaped pins (306) are fitted in the T-shaped grooves (308) and locked with bolts.

8. The plastic-encapsulated frame rib punching device according to claim 1, characterized in that, One end of the bearing seat (101) is further provided with a baffle plate (104), and the baffle plate (104) is connected to the moving end of a vertical lifting mechanism, and the vertical lifting mechanism is mounted below the bearing seat (101).

9. The plastic-encapsulated frame rib punching device according to claim 1, wherein A plurality of through grooves (105) are provided on both sides of the bearing seat (101) along its length direction, and the length direction of the through grooves (105) is parallel to the width direction of the bearing seat (101) for passing through the rollers (203).

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