Press fit clamp for chip packaging HDI (High Density Interconnect) plate

Abstract

The invention relates to the technical field of chip packaging, and discloses a chip packaging HDI plate pressing clamp which comprises a clamp body, the clamp body is arranged at the top and the bottom of a workbench, the clamp body is composed of a control motor, a fixed disc, a rotating disc and a clamping piece, and the clamping piece comprises a movable plate, a connecting rod, a first spring and an upper clamping plate. According to the pressing clamp for the chip packaging HDI plate, through the arrangement of the clamp body and the glue scraping assembly, after the clamping piece is controlled to fix a packaging shell and a chip and packaging pressing equipment is used for conducting pressing operation, the sliding frame can drive the scraping plate to move, the scraping plate is driven to move, and therefore the chip packaging HDI plate is not prone to falling off, and the chip packaging HDI plate is not prone to falling off. According to the utility model, the scraping plate is used for scraping the overflowing glue between the packaging shell and the chip, manual operation of a worker is not needed, and the phenomena that the worker needs to manually scrape the overflowing glue after the pressing is finished and the glue is possibly solidified and is difficult to scrape the overflowing glue are effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of chip packaging, in particular to a pressing fixture for a HDI board used for chip packaging. Background Art

[0002] Chip packaging is the shell used to install semiconductor integrated circuit chips. It has the functions of placing, fixing, sealing, protecting chips and enhancing electrical and thermal performance. HDI is a (technology) for producing printed circuit boards. It is a circuit board with a relatively high line distribution density using micro-blind buried hole technology.

[0003] At present, when packaging the chip, the packaging shell is placed on the chip, and then the chip is pressed by the packaging pressing head. For example, a high-precision chip packaging machine announced by the announcement number "CN220420529U" needs to be fixed with a pressing fixture during this process to ensure the stability of the pressing. However, during the pressing process, glue overflow will occur. At present, when glue overflow occurs, the staff usually manually uses tools to scrape the overflowed glue after the pressing is completed, which not only increases the workload of the staff, but also the glue will gradually solidify during the pressing process, which makes it inconvenient to scrape it later. The staff needs to use a certain amount of force, which can easily cause damage to the chip. For this reason, we propose a pressing fixture for chip packaging HDI board. Summary of the invention

[0004] The object of the present invention is to provide a pressing fixture for a chip packaging HDI board to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a chip packaging HDI board pressing fixture, comprising a fixture body, the fixture body is arranged at the top and bottom of the workbench, the fixture body is composed of a control motor, a fixed disk, a rotating disk and a clamping member, the clamping member comprises a movable plate, a connecting rod, a spring 1 and an upper clamping plate, a scraping assembly for scraping off the overflowed glue is arranged on the movable plate, a driven assembly for controlling the scraping assembly is arranged inside and at the bottom of the movable plate, a through slot is provided on the top of the movable plate, the scraping assembly comprises a sliding frame, the sliding frame is slidably mounted on the inner side of the through slot, a spring 2 is fixed to the inner side of the through slot, and one end of the spring 2 away from the through slot is fixed to the sliding frame A mounting hole is provided on one side of the sliding frame close to the center of the rotating disk, a scraper is hinged on the inner side of the mounting hole, a spring sheet is fixed on the inner side of the mounting hole, an end of the spring sheet away from the mounting hole is fixed to the scraper, a fixing block is fixed on the inner side of the mounting hole, the fixing block can resist the scraper, and when the fixing block and the scraper resist each other, the scraper can only swing to the side away from the fixed block at the position hinged to the sliding frame, and when the sliding frame moves along the through groove, the sliding frame can move with the scraper, and the scraper can scrape off the overflow glue between the packaging shell and the chip without manual operation by the staff, effectively avoiding the need for manual scraping by the staff after the pressing is completed, and the glue may solidify and become difficult to scrape.

[0006] Preferably, the driven assembly includes a driving gear, which passes through the bottom of the movable plate, and the driving gear is rotatably mounted on the inner wall of the movable plate, and the bottom of the driving gear is meshed with an L-shaped rack, and the L-shaped rack is fixed to the top of the workbench, and a slide plate is slidably mounted on the inner wall of the movable plate, and a spring three is fixed to the side of the slide plate close to the driving gear, and the end of the spring three away from the slide plate is fixed to the inner wall of the movable plate, and a winding wheel is fixed to the side of the driving gear close to the slide plate, and a pull rope is wound and fixed on the surface of the winding wheel, and the end of the pull rope away from the pull rope is engaged with the slide The plate is fixed at one end close to spring three, and a resistance plate is hinged on the top of the slide plate. A torsion spring is fixed on the surface of the resistance plate, and one end of the torsion spring away from the resistance plate is fixed to the top of the slide plate. A blocking block is fixed at the bottom of the connecting rod, and the blocking block can resist the slide plate, thereby limiting the slide plate, so that the slide plate cannot move to the side away from the driving gear under the action of spring three. When the moving plate moves to the side close to the center of the rotating disk, the moving plate drives the driving gear to move together. At this time, the driving gear rotates under the action of meshing with the L-shaped rack, and the driving gear drives the winding wheel together The release rope is turned. When the packaging pressing equipment performs the pressing operation, the distance between the packaging shell and the chip is reduced, and the upper clamping plate moves downward with the connecting rod for a certain distance, and the connecting rod moves downward with the blocking block for a certain distance, so that the blocking block no longer resists the slide plate. At this time, under the action of spring three, the slide plate moves to the side away from the driving gear, and the slide plate moves with the resistance plate. Under the support of the torsion spring, the resistance plate resists on the sliding frame and pushes the sliding frame to move together, thereby controlling the scraping assembly to perform the scraping operation. When the sliding frame cannot continue to move, the slide plate continues to carry the resistance plate When the sliding plate is fully reset, the connecting rod can be reset upward with the blocking block under the action of spring 1, and the blocking block contacts the sliding plate again to limit the sliding plate.

[0007] Preferably, the sliding frame and the movable plate are provided with a cleaning part for cleaning the scraper, the cleaning part includes a fixed frame, the fixed frame is fixed on the side wall of the sliding frame, the bottom of the fixed frame is penetrated by a rotating rod and is rotatably connected with the rotating rod, a connecting gear is fixed to the bottom of the rotating rod, the connecting gear is meshed with a connecting rack, the connecting rack is fixed to the top of the movable plate, a cleaning plate is slidably installed on the inner side of the fixed frame, a rubber rope is fixed on one side of the cleaning plate, and the end of the rubber rope away from the cleaning plate is fixed to the inner side of the fixed frame The top of the movable plate is fixed with a vertical rod, and the top of the fixed frame is penetrated by the U-shaped clamping rod and is slidably connected with the U-shaped clamping rod. A spring four is fixed on the top of the fixed frame, and one end of the spring four away from the fixed frame is fixed to the U-shaped clamping rod. A clamping groove is provided on the top of the cleaning plate. When the sliding frame slides along the through groove, the sliding frame moves with the fixed frame, and the connecting gear meshing with the connecting rack rotates the rotating rod. The rotating rod reels in the connecting rope and pulls the cleaning plate to the side away from the rubber rope, stretching the rubber rope. When the slot on the top of the cleaning plate moves to the position of the U-shaped clamping rod, the cleaning plate first contacts the inclined surface of the U-shaped clamping rod, pushing the U-shaped clamping rod to move upward. When the slot on the top of the cleaning plate moves to coincide with the U-shaped clamping rod, the U-shaped clamping rod can be inserted into the slot to limit the cleaning plate. When the sliding frame is reset under the action of spring 2, the connecting gear meshing with the connecting rack drives the rotating rod to rotate in the opposite direction to release the connecting rope. The scraper is contacted by the vertical rod, making the scraper The scraper is swung toward the side close to the fixed frame at the position hinged with the sliding frame, and the scraper contacts the inclined surface of the end of the U-shaped clamping rod away from the cleaning plate, pushing the U-shaped clamping rod upward, so that the U-shaped clamping rod withdraws from the clamping groove at the top of the cleaning plate, thereby releasing the limit on the cleaning plate. At this time, the cleaning plate and the scraper are in a fit state, and under the action of the rubber rope, the cleaning plate moves to the side away from the rotating rod, and the cleaning plate slides along the scraper to scrape off the glue scraped off and remaining on the scraper, so as to avoid residual glue on the scraper, which will solidify later and affect the subsequent use of the scraper.

[0008] Preferably, the control motor is fixed to the bottom of the workbench, the output shaft of the control motor passes through the workbench, the output shaft of the control motor is fixed to the rotating disk, the fixed disk is fixed to the top of the workbench, the fixed disk is provided with a guide groove, the top of the rotating disk is provided with an arc groove, the clamping member is arranged on the fixed disk and the rotating disk, and is restricted by the guide groove on the top of the fixed disk. When the rotating disk rotates, the clamping member can be controlled to slide along the guide groove, so as to center the packaging shell and the chip. When fixing, the packaging shell and the chip are placed on the top of the fixed disk, and the packaging shell and the chip can be fixed and loosened by driving the control motor.

[0009] Preferably, the movable plate is slidably installed in the guide groove on the fixed plate, the bottom of the movable plate is inserted in the arc groove at the top of the rotating plate, the top of the movable plate is penetrated by the connecting rod and is slidably connected to the connecting rod, the top of the connecting rod is fixed with an upper clamping plate, the bottom of the upper clamping plate is fixed with a spring 1, and the bottom of the spring 1 is fixed to the top of the movable plate. When the rotating plate rotates, the rotating plate can contact the movable plate through the arc groove opened on the top, so that the movable plate slides along the guide groove, and the movable plate can move to the side close to the center of the fixed plate or to the side away from the center, and the movable plate and the upper clamping plate can respectively center and fix the packaging shell and the chip.

[0010] Compared with the prior art, the present invention provides a pressing fixture for chip packaging HDI board, which has the following beneficial effects:

[0011] 1. The chip packaging HDI board pressing fixture has a fixture body and a scraper assembly. After the clamping parts are controlled to fix the packaging shell and the chip, and the packaging pressing equipment is used to perform the pressing operation, the sliding frame can move with the scraper, and the scraper scrapes the overflow glue between the packaging shell and the chip. No manual operation is required by the staff, which effectively avoids the need for manual scraping by the staff after the pressing is completed, and the phenomenon that the glue may solidify and become difficult to scrape is avoided.

[0012] 2. The chip packaging HDI board pressing fixture has a scraper assembly and a cleaning part. When the sliding frame is reset under the action of the spring 2, the connecting gear meshed with the connecting rack drives the rotating rod to rotate in the opposite direction to release the connecting rope. The scraper is resisted by the vertical rod, so that the scraper swings to the side close to the fixed frame at the position hinged with the sliding frame. The scraper resists on the inclined surface of the U-shaped clamping rod away from the end of the cleaning plate, pushing the U-shaped clamping rod to move upward, so that the U-shaped clamping rod withdraws from the clamping groove at the top of the cleaning plate, thereby releasing the limit on the cleaning plate. At this time, the cleaning plate and the scraper are in a fitted state. Under the action of the rubber rope, the cleaning plate moves to the side away from the rotating rod, and the cleaning plate slides along the scraper to scrape off the glue scraped off and remaining on the scraper, so as to avoid residual glue on the scraper. After solidification in the later period, it affects the subsequent use of the scraper, and further improves the scraping effect when the scraper is used again in the later period.

[0013] 3. The chip packaging HDI board pressing fixture has a scraper assembly and a driven assembly. When the packaging pressing device performs a pressing operation, the spacing between the packaging shell and the chip is reduced, the upper clamping plate moves downward with the connecting rod for a certain distance, and the connecting rod moves downward with the positioning block for a certain distance, so that the positioning block no longer resists the slide plate. At this time, under the action of the spring three, the slide plate can move to the side away from the driving gear, and the slide plate moves with the resistance plate. Under the support of the torsion spring, the resistance plate resists on the sliding frame and pushes the sliding frame to move together, thereby controlling the scraper assembly to perform a scraper operation. When the sliding frame cannot continue to move, and the slide plate continues to move with the resistance plate, the resistance plate resists on the sliding frame, so that the resistance plate swings at a position hinged with the slide plate, so that the slide plate can continue to move with the resistance plate, so that the resistance plate is separated from the sliding frame, and the sliding frame can be reset under the action of the spring two. In this process, the scraper plate is resisted and folded, which will not cause damage to the chip and the packaging shell, thereby avoiding affecting the finished product quality of the chip and the packaging shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of the fixture body of the present invention being installed on a workbench;

[0015] Figure 2 It is a schematic diagram of the front view structure of the clamp body of the present invention;

[0016] Figure 3 It is a schematic diagram of the connection structure of the clamping member, the scraping assembly and the driven assembly of the present invention;

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the back side of the movable plate of the present invention;

[0018] Figure 5 It is a schematic diagram of the connection structure of the connecting rod, the scraping assembly, the driven assembly and the cleaning part of the present invention;

[0019] Figure 6 For the present invention Figure 5 A is a schematic diagram of the enlarged structure;

[0020] Figure 7 This is a schematic diagram of the connection structure between the scraper assembly and the cleaning part of the present invention;

[0021] Figure 8 It is a schematic diagram of the cross-sectional structure of the back side of the connection between the cleaning part and the scraper of the present invention;

[0022] Fig. 9 It is a schematic diagram of the structure of the U-shaped clamping rod and the spring of the present invention from the front view;

[0023] Fig.10 It is a schematic diagram of the explosion structure of the fixed disk and the rotating disk connected in the present invention.

[0024] In the figure: 11, control motor; 12, fixed disk; 13, rotating disk; 14, clamping member; 141, moving plate; 142, connecting rod; 143, spring one; 144, upper clamping plate; 2, scraper assembly; 21, sliding frame; 22, spring two; 23, mounting hole; 24, scraper; 25, spring; 26, fixed block; 3, driven assembly; 31, driving gear; 32, L-shaped rack; 33, slide plate; 34, spring three; 35, winding wheel; 36, pull rope; 37, contact plate; 38, torsion spring; 39, positioning block; 4, cleaning part; 41, fixed frame; 42, rotating rod; 43, connecting gear; 44, connecting rack; 45, cleaning plate; 46, rubber rope; 47, connecting rope; 48, vertical rod; 49, U-shaped clamping rod; 410, spring four; 6, through groove. DETAILED DESCRIPTION

[0025] like Figure 1-Figure 10 As shown, the present invention provides a technical solution: a chip packaging HDI board pressing fixture, including a fixture body, the fixture body is arranged at the top and bottom of the workbench, the fixture body is composed of a control motor 11, a fixed disk 12, a rotating disk 13 and a clamping member 14, the clamping member 14 includes a moving plate 141, a connecting rod 142, a spring 143 and an upper clamping plate 144, a scraper assembly 2 for scraping off the overflowed glue is arranged on the moving plate 141, a driven assembly 3 for controlling the scraper assembly 2 is arranged inside and at the bottom of the moving plate 141, and a through groove 6 is opened on the top of the moving plate 141.

[0026] The scraper assembly 2 includes a sliding frame 21, which is slidably mounted on the inner side of the through slot 6, a spring 22 is fixed on the inner side of the through slot 6, and one end of the spring 22 away from the through slot 6 is fixed to the sliding frame 21, a mounting hole 23 is opened on the side of the sliding frame 21 close to the center of the rotating disk 13, a scraper 24 is hinged on the inner side of the mounting hole 23, a spring 25 is fixed on the inner side of the mounting hole 23, and one end of the spring 25 away from the mounting hole 23 is fixed to the scraper 24, a fixing block 26 is fixed on the inner side of the mounting hole 23, and the fixing block 26 can be The scraper 24 is in contact with each other. When the fixed block 26 and the scraper 24 are in contact with each other, the scraper 24 can only swing to the side away from the fixed block 26 at the hinged position with the sliding frame 21. When the sliding frame 21 moves along the through groove 6, the sliding frame 21 can move with the scraper 24. The scraper 24 can scrape off the overflow glue between the packaging shell and the chip without manual operation by the staff, which effectively avoids the need for manual scraping by the staff after the pressing is completed, and the glue may solidify and become difficult to scrape off.

[0027] The driven assembly 3 includes a driving gear 31, which passes through the bottom of the moving plate 141 and is rotatably mounted on the inner wall of the moving plate 141. The bottom of the driving gear 31 is meshed with an L-shaped rack 32, and the L-shaped rack 32 is fixed to the top of the workbench. A slide plate 33 is slidably mounted on the inner wall of the moving plate 141. A spring 34 is fixed to the side of the slide plate 33 close to the driving gear 31, and one end of the spring 34 away from the slide plate 33 is fixed to the inner wall of the moving plate 141. A winding wheel 35 is fixed to the side of the driving gear 31 close to the slide plate 33, and a pull rope 36 is wound and fixed on the surface of the winding wheel 35. The end of the pull rope 36 away from the winding wheel 35 is fixed to the end of the slide plate 33 close to the spring 34. The top of the slide plate 33 is hinged with a contact plate 37, and a torsion spring 38 is fixed on the surface of the contact plate 37. The end of the torsion spring 38 away from the contact plate 37 is fixed to the top of the slide plate 33. The bottom of the connecting rod 142 is fixed with a blocking block 39, which can contact the slide plate 33, so as to limit the slide plate 33, so that the slide plate 33 cannot move to the side away from the driving gear 31 under the action of the spring three 34. When the moving plate 141 moves to the side close to the center of the rotating disk 13, the moving plate 141 drives the driving gear 31 to move together. At this time, the driving gear 31 rotates under the action of meshing with the L-shaped rack 32, and the driving gear 31 drives the winding wheel 35 to rotate together to release the pull rope 36. When the pressing device is performing the pressing operation, the distance between the packaging shell and the chip is reduced, and the upper clamping plate 144 moves downward a certain distance with the connecting rod 142, and the connecting rod 142 moves downward a certain distance with the blocking block 39, so that the blocking block 39 no longer resists the slide plate 33. At this time, under the action of the spring three 34, the slide plate 33 moves to the side away from the driving gear 31, and the slide plate 33 moves with the contact plate 37. Under the support of the torsion spring 38, the contact plate 37 resists on the sliding frame 21 and pushes the sliding frame 21 to move together, thereby controlling the scraping assembly 2 to perform the scraping operation. When the sliding frame 21 cannot continue to move, and the slide plate 33 continues to move with the contact plate 37, the contact plate 37 resists on When the sliding plate 33 is completely reset, the connecting rod 142 can be reset upward with the blocking block 39 under the action of the spring 143, and the blocking block 39 contacts the sliding plate 33 again to limit the sliding plate 33.

[0028] The sliding frame 21 and the moving plate 141 are provided with a cleaning part 4 for cleaning the scraper 24. The cleaning part 4 includes a fixed frame 41, which is fixed on the side wall of the sliding frame 21. The bottom of the fixed frame 41 is penetrated by a rotating rod 42 and is rotatably connected with the rotating rod 42. A connecting gear 43 is fixed to the bottom of the rotating rod 42. The connecting gear 43 is meshed with a connecting rack 44. The connecting rack 44 is fixed to the top of the moving plate 141. A cleaning plate 45 is slidably installed on the inner side of the fixed frame 41. A rubber rope 46 is fixed to one side of the cleaning plate 45. One end of the rubber rope 46 away from the cleaning plate 45 is fixed to the inner side of the fixed frame 41, and the other side of the cleaning plate 45 is fixed to the inner side of the fixed frame 41. A connecting rope 47 is fixed, and one end of the connecting rope 47 away from the cleaning plate 45 is wound around and fixed on the surface of the rotating rod 42. A vertical rod 48 is fixed on the top of the movable plate 141. The top of the fixed frame 41 is penetrated by a U-shaped clamping rod 49 and is slidably connected with the U-shaped clamping rod 49. A spring four 410 is fixed on the top of the fixed frame 41. One end of the spring four 410 away from the fixed frame 41 is fixed to the U-shaped clamping rod 49. A card slot is opened on the top of the cleaning plate 45. When the sliding frame 21 slides along the through slot 6, the sliding frame 21 moves with the fixed frame 41, and the connecting gear 43 meshing with the connecting rack 44 rotates the rotating rod 42, and the rotating rod 42 reels the connecting rope 47 to pull the cleaning The cleaning plate 45 moves to the side away from the rubber rope 46 to stretch the rubber rope 46. When the slot at the top of the cleaning plate 45 moves to the position of the U-shaped clamping rod 49, the cleaning plate 45 first contacts the inclined surface of the U-shaped clamping rod 49, pushing the U-shaped clamping rod 49 to move upward. When the slot at the top of the cleaning plate 45 moves to coincide with the U-shaped clamping rod 49, the U-shaped clamping rod 49 can be inserted into the slot to limit the cleaning plate 45. When the sliding frame 21 is reset under the action of the spring 22, the connecting gear 43 engaged with the connecting rack 44 drives the rotating rod 42 to rotate in the opposite direction to release the connecting rope 47, and the scraper 24 is contacted by the vertical rod 48, so that the scraper 24 moves with the sliding frame 21. The hinged position of the frame 21 swings toward the side close to the fixed frame 41, and the scraper 24 contacts the inclined surface of the U-shaped clamping rod 49 away from the end of the cleaning plate 45, pushing the U-shaped clamping rod 49 to move upward, so that the U-shaped clamping rod 49 withdraws from the clamping groove at the top of the cleaning plate 45, thereby releasing the limit on the cleaning plate 45. At this time, the cleaning plate 45 and the scraper 24 are in a fit state. Under the action of the rubber rope 46, the cleaning plate 45 moves to the side away from the rotating rod 42, and the cleaning plate 45 slides along the scraper 24 to scrape off the glue scraped off and remaining on the scraper 24, so as to avoid residual glue on the scraper 24, which will affect the subsequent use of the scraper 24 after solidification.

[0029] The control motor 11 is fixed to the bottom of the workbench, and the output shaft of the control motor 11 passes through the workbench. The output shaft of the control motor 11 is fixed to the rotating disk 13, and the fixed disk 12 is fixed to the top of the workbench. A guide groove is opened on the fixed disk 12, and an arc groove is opened on the top of the rotating disk 13. The clamping member 14 is arranged on the fixed disk 12 and the rotating disk 13. By limiting the guide groove on the top of the fixed disk 12, when the rotating disk 13 rotates, the clamping member 14 can be controlled to slide along the guide groove, so as to center the packaging shell and the chip. When fixing, by placing the packaging shell and the chip on the top of the fixed disk 12, the packaging shell and the chip can be fixed and loosened by driving the control motor 11.

[0030] The movable plate 141 is slidably installed in the guide groove on the fixed disk 12, and the bottom of the movable plate 141 is inserted into the arc groove at the top of the rotating disk 13. The top of the movable plate 141 is penetrated by the connecting rod 142 and is slidably connected with the connecting rod 142. An upper clamping plate 144 is fixed on the top of the connecting rod 142, and a spring 143 is fixed on the bottom of the upper clamping plate 144. The bottom of the spring 143 is fixed on the top of the movable plate 141. When the rotating disk 13 rotates, the rotating disk 13 can contact the movable plate 141 through the arc groove opened on the top, so that the movable plate 141 slides along the guide groove, and the movable plate 141 can move to the side close to the center of the fixed disk 12 or to the side away from the center. The movable plate 141 and the upper clamping plate 144 can respectively center and fix the packaging shell and the chip.

[0031] It is worth noting that packaging and pressing equipment is a prior art in this field, has existing products, and is not the main innovative part of this application, so it is not described in this application.

[0032] During operation, the packaging pressing equipment is arranged on the top of the workbench, and the packaging pressing head of the packaging pressing equipment is at the top of the fixed disk 12 and located in the center of the fixed disk 12. The packaging shell and chip to be processed are placed on the top of the fixed disk 12. At this time, the packaging shell and the chip are coated with glue.

[0033] Start the control motor 11, and the control motor 11 drives the rotating disk 13 to rotate. The rotating disk 13 contacts the movable plate 141 through the arc groove opened on the top, so that the movable plate 141 moves along the guide groove to the side close to the center of the fixed disk 12, and the movable plate 141 moves with the upper clamping plate 144, thereby respectively fixing the packaging shell and the chip.

[0034] During this process, the moving plate 141 drives the driving gear 31 to move together. At this time, the driving gear 31 rotates under the action of meshing with the L-shaped rack 32, and the driving gear 31 drives the winding wheel 35 to rotate together to release the pull rope 36.

[0035] The packaging pressing device is started, and the packaging pressing head of the packaging pressing device exerts pressure on the packaging shell and the chip, and the packaging shell and the chip gradually approach each other, and the upper clamping plate 144 can move downward a certain distance together with it, and the upper clamping plate 144 moves together with the connecting rod 142, and the connecting rod 142 moves downward a certain distance with the positioning block 39, so that the positioning block 39 no longer resists the slide plate 33. At this time, under the action of the spring three 34, the slide plate 33 can move to the side away from the driving gear 31, and the slide plate 33 moves together with the resistance plate 37. Under the support of the torsion spring 38, the contact plate 37 contacts the sliding frame 21 and pushes the sliding frame 21 to move together, thereby controlling the scraper assembly 2 to perform the scraper operation. When the sliding frame 21 cannot continue to move and the slide plate 33 continues to move with the contact plate 37, the contact plate 37 contacts the sliding frame 21, so that the contact plate 37 swings at the position where it is hinged with the slide plate 33, so that the slide plate 33 can continue to move with the contact plate 37, so that the contact plate 37 is separated from the sliding frame 21, and the sliding frame 21 can be reset under the action of the spring 22.

[0036] When the sliding frame 21 is moving, the scraper 24 is no longer resisted by the vertical rod 48. Under the action of the spring 25, the scraper 24 swings to the side close to the fixed block 26 at the hinged position with the sliding frame 21. The scraper 24 is now in a vertical state with the sliding frame 21. The scraper 24 can contact the connection position between the packaging shell and the chip. As the sliding frame 21 moves with the scraper 24, the scraper 24 can scrape off the overflow glue between the packaging shell and the chip without the need for manual operation by the staff, which effectively avoids the need for manual scraping by the staff after the pressing is completed, and the phenomenon that the glue may solidify and become difficult to scrape off may be avoided.

[0037] When the sliding frame 21 moves, the sliding frame 21 moves with the fixed frame 41, and the connecting gear 43 meshing with the connecting rack 44 rotates the rotating rod 42. The rotating rod 42 reels in the connecting rope 47 and pulls the cleaning plate 45 to the side away from the rubber rope 46, stretching the rubber rope 46. When the slot at the top of the cleaning plate 45 moves to the position of the U-shaped clamping rod 49, the cleaning plate 45 first contacts the inclined surface of the U-shaped clamping rod 49, pushing the U-shaped clamping rod 49 to move upward. When the slot at the top of the cleaning plate 45 moves to overlap with the U-shaped clamping rod 49, the U-shaped clamping rod 49 can be inserted into the slot to limit the cleaning plate 45.

[0038] When the sliding frame 21 returns to the original position with the scraper 24, the connecting gear 43 meshing with the connecting rack 44 drives the rotating rod 42 to rotate in the opposite direction to release the connecting rope 47. The scraper 24 is resisted by the vertical rod 48, so that the scraper 24 swings to the side close to the fixed frame 41 at the position hinged with the sliding frame 21, and the scraper 24 resists on the inclined surface of the U-shaped clamping rod 49 away from the end of the cleaning plate 45, pushing the U-shaped clamping rod 49 to move upward, so that the U-shaped clamping rod 49 withdraws from the clamping groove at the top of the cleaning plate 45, thereby releasing the limit of the cleaning plate 45. At this time, the cleaning plate 45 and the scraper 24 are in a fit state. Under the action of the rubber rope 46, the cleaning plate 45 moves to the side away from the rotating rod 42, and the cleaning plate 45 slides along the scraper 24 to scrape off the glue scraped off and remaining on the scraper 24, so as to avoid residual glue on the scraper 24, which will affect the subsequent use of the scraper 24 after solidification.

[0039] At this time, the staff only needs to drive the control motor 11 to rotate in the opposite direction, thereby controlling the clamping part 14 to release the fixation of the packaging shell and the chip. At this time, the driving gear 31 controls the winding wheel 35 to reel in the pull rope 36, thereby pulling the slide plate 33 to move to the side close to the driving gear 31 and reset. When the slide plate 33 is fully reset, the connecting rod 142 can be reset upward with the blocking block 39 under the action of the spring 143, and the blocking block 39 contacts the slide plate 33 again to limit the slide plate 33, completing the device reset and waiting for the next operation.

[0040] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A chip packaging HDI board pressing fixture, comprising a fixture body, the fixture body is arranged at the top and bottom of a workbench, characterized in that: The clamp body is composed of a control motor (11), a fixed disk (12), a rotating disk (13) and a clamping member (14); the clamping member (14) comprises a movable plate (141), a connecting rod (142), a spring 1 (143) and an upper clamping plate (144); a scraper assembly (2) for scraping off the overflowed glue is arranged on the movable plate (141); a driven assembly (3) for controlling the scraper assembly (2) is arranged inside and at the bottom of the movable plate (141); a through groove (6) is provided on the top of the movable plate (141); the scraper assembly (2) comprises a sliding frame (21); the sliding frame (21) is slidably mounted on the inner side of the through groove (6); a spring 2 (22) is fixed on the inner side of the through groove (6); an end of the spring 2 (22) away from the through groove (6) is fixed to the sliding frame (21); a mounting hole (23) is provided on a side of the sliding frame (21) close to the center of the rotating disk (13).

2. The HDI board pressing fixture for chip packaging according to claim 1, characterized in that: A scraper (24) is hingedly connected to the inner side of the mounting hole (23), a spring sheet (25) is fixed to the inner side of the mounting hole (23), one end of the spring sheet (25) away from the mounting hole (23) is fixed to the scraper (24), and a fixing block (26) is fixed to the inner side of the mounting hole (23).

3. The HDI board pressing fixture for chip packaging according to claim 1, characterized in that: The driven assembly (3) comprises a driving gear (31), the driving gear (31) passes through the bottom of the moving plate (141), the driving gear (31) is rotatably mounted on the inner wall of the moving plate (141), the bottom of the driving gear (31) is meshed with an L-shaped rack (32), the L-shaped rack (32) is fixed to the top of the workbench, a slide plate (33) is slidably mounted on the inner wall of the moving plate (141), a spring three (34) is fixed on the side of the slide plate (33) close to the driving gear (31), an end of the spring three (34) away from the slide plate (33) is fixed on the inner wall of the moving plate (141), and a winding wheel (35) is fixed on the side of the driving gear (31) close to the slide plate (33).

4. The HDI board pressing fixture for chip packaging according to claim 3 is characterized in that: A pull rope (36) is wound around and fixed on the surface of the winding wheel (35); one end of the pull rope (36) away from the winding wheel (35) is fixed to one end of the slide plate (33) close to the spring three (34); a contact plate (37) is hinged on the top of the slide plate (33); a torsion spring (38) is fixed on the surface of the contact plate (37); one end of the torsion spring (38) away from the contact plate (37) is fixed to the top of the slide plate (33); and a blocking block (39) is fixed to the bottom of the connecting rod (142).

5. The HDI board pressing fixture for chip packaging according to claim 2, characterized in that: The sliding frame (21) and the movable plate (141) are provided with a cleaning part (4) for cleaning the scraper (24), the cleaning part (4) comprising a fixed frame (41), the fixed frame (41) being fixed on the side wall of the sliding frame (21), the bottom of the fixed frame (41) being penetrated by a rotating rod (42) and being rotatably connected to the rotating rod (42), the bottom of the rotating rod (42) being fixed with a connecting gear (43), the connecting gear (43) being meshed with a connecting rack (44), the connecting rack (44) being fixed on the top of the movable plate (141), and a cleaning plate (45) being slidably mounted on the inner side of the fixed frame (41).

6. The HDI board pressing fixture for chip packaging according to claim 5, characterized in that: A rubber rope (46) is fixed to one side of the cleaning plate (45), and one end of the rubber rope (46) away from the cleaning plate (45) is fixed to the inner side of the fixing frame (41). A connecting rope (47) is fixed to the other side of the cleaning plate (45), and one end of the connecting rope (47) away from the cleaning plate (45) is wound around and fixed to the surface of the rotating rod (42). A vertical rod (48) is fixed to the top of the movable plate (141). The top of the fixing frame (41) is penetrated by a U-shaped clamping rod (49) and is slidably connected to the U-shaped clamping rod (49). A spring four (410) is fixed to the top of the fixing frame (41), and one end of the spring four (410) away from the fixing frame (41) is fixed to the U-shaped clamping rod (49). A clamping groove is provided on the top of the cleaning plate (45).

7. The HDI board pressing fixture for chip packaging according to claim 1, characterized in that: The control motor (11) is fixed to the bottom of the workbench, the output shaft of the control motor (11) passes through the workbench, the output shaft of the control motor (11) is fixed to the rotating disk (13), the fixed disk (12) is fixed to the top of the workbench, the fixed disk (12) is provided with a guide groove, the top of the rotating disk (13) is provided with an arc groove, and the clamping member (14) is arranged on the fixed disk (12) and the rotating disk (13).

8. The HDI board pressing fixture for chip packaging according to claim 7, characterized in that: The movable plate (141) is slidably installed in the guide groove on the fixed plate (12), the bottom of the movable plate (141) is inserted into the arc groove on the top of the rotating plate (13), the top of the movable plate (141) is penetrated by the connecting rod (142) and is slidably connected to the connecting rod (142), the top of the connecting rod (142) is fixed with an upper clamping plate (144), the bottom of the upper clamping plate (144) is fixed with a spring 1 (143), and the bottom of the spring 1 (143) is fixed to the top of the movable plate (141).

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