A double-layer press for hot pressing servo packaging

Abstract

The present invention discloses a hot pressing servo packaging double-layer press, which relates to the field of semiconductor packaging technology. It has the advantages of increasing the production capacity of semiconductor products and reducing the occupied area. The key points of its technical solution are: it includes a lower large mold base located on the ground and two relatively distributed plate-type columns arranged on the upper end surface of the lower large mold base, the upper ends of the two columns are connected by an upper large mold base, and mold one and mold two distributed in the vertical direction are connected between the two columns by a connecting piece; it also includes a driving component arranged on the lower large mold base, and the driving component drives mold one and mold two to open and close at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of semiconductor packaging, in particular to a hot pressing servo packaging double-layer press. Background Art

[0002] IC semiconductor products include a lead frame and a colloid inside the lead frame. The colloid is extruded and injection molded on the lead frame by a press and a mold. In order to double the production capacity, the number of molds is generally increased to two. At this time, the two molds are placed horizontally side by side, which increases the floor space. Therefore, the applicant has developed a new technical solution in the actual production process to solve the above technical problems. Summary of the invention

[0003] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a hot pressing servo packaging double-layer press, which has the advantages of increasing the production capacity of semiconductor products and reducing the occupied area.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The present invention provides a hot pressing servo packaging double-layer press, comprising a lower large mold base located on the ground and two plate-type columns arranged on the upper end surface of the lower large mold base and arranged opposite to each other, the upper ends of the two columns are connected by the upper large mold base, and a mold 1 and a mold 2 distributed in the vertical direction are connected between the two columns by a connecting piece;

[0006] It also includes a driving member arranged on the lower large mold base, and the driving member drives the mold 1 and the mold 2 to open and close simultaneously.

[0007] By adopting the above technical solution, mold one and mold two are distributed between two columns in the vertical direction, which makes it convenient for the driving part to drive mold one and mold two to open and close at the same time. At this time, the distribution of mold one and mold two reduces the occupied area and increases the production capacity of semiconductor products. The distribution of mold one and mold two makes it possible to double the production capacity while keeping the clamping pressure value of the single-layer press unchanged.

[0008] Preferably, the connecting member comprises an inverted U-shaped support frame slidably connected between two upright posts, a lower fixed seat is slidably connected between two relatively distributed vertical plates of the support frame, a lower die seat 1 of a die 1 is fixedly connected on the upper end surface of the lower fixed seat, and an upper die seat 1 corresponding to the lower die seat 1 is provided on the horizontal plate surface of the support frame;

[0009] An upper die seat 2 of die 2 is arranged on the lower end surface of the upper large die seat, an upper fixed seat is fixedly arranged on a side of the support frame away from the upper die seat 1, and a lower die seat 2 corresponding to the upper die seat 2 is arranged on the upper fixed seat.

[0010] Preferably, the driving member drives the lower fixed seat to move up and down, and the two ends of the support frame along the width direction of the support frame extend out of the two sides of the column width direction, and the two ends of the lower fixed seat along the width direction of the lower fixed seat extend out of the two ends of the support frame width direction, and a fixed plate is provided at the extended end, and a vertically distributed active rack 1 is provided at the end of the fixed plate away from the lower fixed seat, and a driven rack 1 corresponding to the active rack 1 is fixedly provided on the side of the column, and an intermediate gear 1 is rotatably connected to the vertical plate surface of the support frame, and the intermediate gear 1 is located between the active rack 1 and the driven rack 1, and the two sides of the intermediate gear 1 are respectively meshed with the active rack 1 and the driven rack 1.

[0011] Preferably, two guide rails 1 are provided on the relatively vertical plate surfaces of the support frame, and a slide seat 1 which slides on the guide rail 1 is fixedly provided on the side surface of the lower fixed seat;

[0012] The two uprights are each provided with a guide rail 2 on one side surface corresponding to the upper fixed seat, and a slide seat 2 which slides on the guide rail 2 is fixedly provided on the side surface of the upper fixed seat.

[0013] Preferably, a mounting block is provided on the upper end surface of the lower large mold base, a mounting groove with an upward notch is provided on the upper end surface of the mounting block, two extension blocks extending upward are provided on the upper end surface of the mounting block, and the two uprights are respectively fixed on the upper end surfaces of the two extension blocks;

[0014] The driving member includes two screw rods rotatably connected to the bottom of the installation groove, the two screw rods are connected by a lifting block, the lifting block is threadedly connected to the two screw rods, the outer wall of the lifting block is hinged with two groups of driving connecting rods distributed opposite to each other, each group of driving connecting rods is distributed at both ends of a screw rod, each of the driving connecting rods is hinged with a first connecting rod and a second connecting rod at one end away from the lifting block, each of the first connecting rods is hinged to the extension block at one end away from the driving connecting rod, and each of the second connecting rods is hinged to the lower fixed seat at one end away from the driving connecting rod;

[0015] The lower large die base is provided with a power component for driving the two screw rods to rotate in the same direction.

[0016] Preferably, the power part includes a servo motor arranged on the lower large mold base, the rotating shaft of the servo motor extends out of the bottom of the lower large mold base, and is coaxially fixedly connected to a driving pulley at one end of the extension, the lower ends of the two screw rods extend out of the bottom of the lower large mold base and are fixedly coaxially connected to a driven pulley at one end of the extension, the bottom of the lower large mold base is provided with a placement groove for placing the driving pulley and the driven pulley, the groove bottom of the placement groove is rotatably connected with an intermediate pulley and a side pulley located on one side of the two driven pulleys, the intermediate pulley is distributed toward the space between the two driven pulleys, the driving pulley and the side pulley are respectively distributed on the side opposite to each other, the driving pulley, the intermediate pulley, the side pulley and the two driven pulleys are connected by an annular belt one, and the annular belt one sequentially connects the driving pulley, a driven pulley, the intermediate pulley, the other driven pulley, and the side pulley.

[0017] Preferably, an actuator rod is provided on the upper end surface of the lower fixed seat on both sides of the mold, and the upper end of the actuator rod passes through the support frame and enters the upper fixed seat. A sliding groove is provided in the upper fixed seat for the upper end of the actuator rod to slide, and the upper end of the actuator rod is threadedly connected with a limiting screw, one end of the limiting screw enters the actuator rod and is threadedly connected to the actuator rod, the outer diameter of the nut of the limiting screw is larger than the diameter of the actuator rod, and the upper end of the upper fixed seat is provided with a moving groove connected to the sliding groove and coaxially distributed, the upper end of the moving groove extends out of the upper end surface of the upper fixed seat, and the limiting screw slides in the moving groove.

[0018] Preferably, the position where the support frame is connected to the middle gear 1 is provided with two horizontal plates which are relatively distributed up and down, and two vertical plates which are relatively distributed are connected between the two horizontal plates, and the plate surfaces of the vertical plates are parallel to the vertical outer walls of the support frame, and driving grooves are correspondingly opened on the two vertical plates, and the middle gear 1 is located between the two vertical plates and the middle gear is coaxially connected with a rotating shaft, and rectangular rods extending into the two driving grooves are respectively provided at both ends of the rotating shaft, and the rectangular rods slide up and down in the driving grooves, and the upper and lower horizontal plates are fixedly connected with compression springs on both sides of the middle gear 1, and one end of the compression springs is fixed on the rectangular rod, and when mold 1 and mold 2 are in the mold opening state, the upper and lower compression springs of the rectangular rod make the rectangular rod located in the middle position of the rectangular groove.

[0019] Preferably, a guide rail three is provided on the vertical outer wall of the support frame, a connecting plate located below a driven rack one is provided on the column, and a slide seat three sliding on the guide rail three is provided on the connecting plate.

[0020] Preferably, the lower large mold base is provided with a first driving member for driving the semiconductor product on mold one to automatically demould, and the column is provided with a second driving member for driving the semiconductor product on mold two to automatically demould.

[0021] The beneficial effect of the present invention is that mold one and mold two are distributed between two columns in the vertical direction, which makes it convenient for a driving member to drive mold one and mold two to open and close at the same time. At this time, the distribution of mold one and mold two reduces the floor space and increases the production capacity of semiconductor products. The distribution of mold one and mold two makes it possible to double the production capacity while keeping the clamping pressure value of a single-layer press unchanged. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of this embodiment;

[0024] Figure 2 for Figure 1 The enlarged structural diagram of the middle A part;

[0025] Figure 3 This is a schematic diagram of the structure of the compression spring of this embodiment;

[0026] Figure 4 This is a schematic diagram of the structure of the second connecting rod in this embodiment;

[0027] Figure 5 This is a schematic diagram of the structure of the lower fixing seat of this embodiment;

[0028] Figure 6 This is a schematic diagram of the structure of the actuator rod in this embodiment;

[0029] Figure 7 This is a schematic diagram of the structure of a long screw in this embodiment;

[0030] Figure 8 This is a schematic diagram of the structure of the endless belt 2 of this embodiment;

[0031] Fig. 9 This is a schematic diagram of the structure of the endless belt 1 of this embodiment;

[0032] Fig.10 This is a schematic diagram of the structure of the push block 1 of this embodiment;

[0033] Fig.11 This is a schematic diagram of the structure of the chute in this embodiment;

[0034] Fig.12 This is a schematic diagram of the structure of the lower push rod mounting plate of this embodiment;

[0035] Fig.13 This is a schematic diagram of the structure of the upper mold core of this embodiment;

[0036] Fig.14 This is a schematic diagram of the structure of the upper plate of this embodiment;

[0037] Fig.15 It is a schematic diagram of the structure of spring 2 of this embodiment.

[0038] Description of reference numerals:

[0039] In the figure: 1, lower large mold base; 11, column; 12, upper large mold base; 13, mold one; 131, lower base; 132, lower pad; 133, lower heating template; 134, lower mounting box; 135, lower push plate; 136, lower ejector mounting plate; 137, lower connecting plate; 138, lower mold core; 1381, push block one; 139, upper base; 1391, upper pad; 1392, upper heating template; 1393, upper mounting box; 1394, upper plate; 1395, upper push plate; 1396, upper ejector mounting plate; 1397, upper connecting plate; 1398, upper mold core; 1399, opposite plate; 13991, mounting column; 13992, spring two; 14, mold two; 15, drive moving parts; 16, support frame; 161, lower fixed seat; 1611, through groove; 1612, driving rod; 1613, long screw; 1614, sliding sleeve; 1615, snap ring; 1616, first groove; 1617, second groove; 1618, lifting rod; 1619, inclined groove; 16191, corresponding groove; 16192, inclined block; 16193, force rod; 16194, spring 1; 162, upper fixed seat; 163, fixing plate; 1631, fastening screw; 164, active rack 1; 165, driven rack 1; 166, intermediate gear 1; 167, guide rail 1; 168, guide rail 2; 1681, slide seat 2; 169, guide rail 3; 1691, connecting plate; 16 92, slide seat three; 17, mounting block; 171, mounting groove; 172, extension block; 173, screw rod; 174, lifting block; 175, driving connecting rod; 176, first connecting rod; 177, second connecting rod; 18, servo motor; 181, driving pulley; 182, driven pulley; 183, placement groove; 184, intermediate pulley; 185, side pulley; 186, endless belt one; 19, execution rod; 191, slide groove; 192, limit screw; 193, moving groove; 194, horizontal plate; 1941, vertical plate; 1942, positioning groove; 1943, locking screw; 1944, rectangular groove; 1945, waist-shaped groove; 195, rotating shaft; 1951, rectangular rod; 1952. Compression spring; 196. Support seat; 1961. Prime rod one; 1962. Pull rod; 1963. Prime rod two; 197. Cavity; 1971. Runner cavity; 1972. Plastic encapsulation material cylinder; 1973. Glue extrusion piston; 1974. Notch; 1975. Lifting groove; 19751. Lifting plate; 19752. Give way groove; 19753. Drive plate; 19754. Ball screw; 19755. Horizontal groove; 19756. Driven pulley; 19757. Motor; 19758. Drive pulley; 19759. Pressure pulley; 1976. Endless belt two; 198. Heating rod; 1981. Thermocouple; 2. Wire rack; 21. Colloid. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] A hot pressing servo packaging double-layer press, such as Figure 1 , comprising a lower large mold base 1 located on the ground and two plate-type columns 11 arranged on the upper end surface of the lower large mold base 1 and distributed opposite to each other, the upper ends of the two columns 11 are connected by an upper large mold base 12, and a mold 13 and a mold 2 14 distributed in the vertical direction are connected between the two columns 11 through a connecting piece;

[0042] The mold assembly also includes a driving member 15 disposed on the lower large mold base 1, and the driving member 15 drives the mold 1 13 and the mold 2 14 to open and close simultaneously.

[0043] like Figure 1 , mold one 13 and mold two 14 are distributed between two columns 11 in the vertical direction, so that the driving member 15 drives mold one 13 and mold two 14 to open and close at the same time. At this time, the distribution of mold one 13 and mold two 14 reduces the occupied area and increases the production capacity of semiconductor products. The distribution method of mold one 13 and mold two 14 makes it possible to double the production capacity while keeping the clamping pressure value of the single-layer press unchanged.

[0044] like Figure 1 In addition, the plate-type columns 11 are used to make the upper large mold base 12 and the lower large mold base 1 fully stressed on both sides, and the stress-bearing surface is more uniform. On the basis of the same die area, the pressure on the die pressure surface is more uniform, thereby improving the chip packaging quality.

[0045] like Figure 1 The connecting member includes an inverted U-shaped support frame 16 slidably connected between the two columns 11, that is, the opening of the support frame 16 is distributed downward, and a lower fixed seat 161 is slidably connected between two relatively distributed vertical plate surfaces of the support frame 16, the mold 1 13 includes an upper mold seat 1 and a lower mold seat 1, the mold 2 14 includes an upper mold seat 2 and a lower mold seat 2, the lower mold seat 1 of the mold 1 13 is fixedly connected on the upper end surface of the lower fixed seat 161, and an upper mold seat 1 corresponding to the lower mold seat 1 is provided on the horizontal plate surface of the support frame 16;

[0046] An upper die seat 2 of the second die 14 is disposed on the lower end surface of the upper large die seat 12 , and an upper fixed seat 162 is fixedly disposed on the side of the support frame 16 away from the upper die seat 1 , and a lower die seat 2 corresponding to the upper die seat 2 is disposed on the upper fixed seat 162 .

[0047] like Figure 1 and Figure 2The driving member 15 drives the lower fixed seat 161 to move up and down, and the two ends of the support frame 16 along the width direction of the support frame 16 extend out of the two sides of the width direction of the column 11, and the two ends of the lower fixed seat 161 along the width direction of the lower fixed seat 161 extend out of the two ends of the width direction of the support frame 16, and a fixing plate 163 is provided at one end of the extension, and the fixing plate 163 is installed on the lower fixed seat 161, and a vertically distributed active rack 164 is provided at one end of the fixing plate 163 away from the lower fixed seat 161, and a driven rack 165 corresponding to the active rack 164 is fixedly provided on the side of the column 11, and an intermediate gear 166 is rotatably connected to the vertical plate surface of the support frame 16, and the intermediate gear 166 is located between the active rack 164 and the driven rack 165, and the two sides of the intermediate gear 166 are respectively meshed with the active rack 164 and the driven rack 165.

[0048] like Figure 1 and Figure 4 and Figure 5 In order to facilitate the lower fixed seat 161 to slide on the inner wall of the support frame 16, two guide rails 167 are provided on the relatively vertical plate surface of the support frame 16, and a slide seat 1 that slides on the guide rail 167 is fixed on the side of the lower fixed seat 161;

[0049] like Figure 1 and Figure 4 and Figure 5 In order to facilitate the support frame 16 to slide on the column 11, the two columns 11 are provided with a second guide rail 168 on one side surface corresponding to the upper fixed seat 162, and a second slide seat 1681 that slides on the second guide rail 168 is fixed on the side surface of the upper fixed seat 162.

[0050] like Figure 1 and Figure 4The upper end surface of the lower large mold base 1 is provided with a mounting block 17, and the upper end surface of the mounting block 17 is provided with a mounting groove 171 with a notch facing upward. The upper end surface of the mounting block 17 is provided with two extension blocks 172 extending upward. The extension block 172 and the mounting block 17 can be manufactured as one piece. The two columns 11 are respectively fixed on the upper end surfaces of the two extension blocks 172; the driving member 15 includes two screw rods 173 rotatably connected to the bottom of the mounting groove 171, and the two screw rods 173 are connected by a lifting block 174, and the lifting block 174 is threadedly connected to the two screw rods 173. The lifting block 174 The outer wall is hinged with two groups of driving connecting rods 175 that are distributed opposite to each other. Each group of driving connecting rods 175 is distributed at both ends of a screw rod 173. Each driving connecting rod 175 is hinged with a first connecting rod 176 and a second connecting rod 177 at one end away from the lifting block 174. Each first connecting rod 176 is hinged to the extension block 172 at one end away from the driving connecting rod 175. Each second connecting rod 177 is hinged to the lower fixed seat 161 at one end away from the driving connecting rod 175. A power member that drives the two screw rods 173 to rotate in the same direction is provided on the lower large mold base 1.

[0051] like Figure 1 , Figure 2 and Figure 4 The working principle of the driving member 15 is as follows: in order to enable the mold 1 13 and the mold 2 14 to open and close at the same time, the power member drives the two screw rods 173 to rotate in the same direction. At this time, the lifting block 174 threadedly connected to the screw rods 173 rises with the rotation of the two screw rods 173, driving the connecting rod 175, the first connecting rod 176 and the second connecting rod 177 to start to move upward. Due to the action of the first connecting rod 176, one end of the second connecting rod 177 hinged to the lower fixed seat 161 gradually rises, thereby pushing the lower fixed seat 161 to gradually move upward, so that the lower fixed seat 161 moves upward in the support frame 16. Sliding, the lower die seat 1 of mold 13 gradually moves toward the upper die seat 1, and the mold 13 is closed. In this process, the active rack 164 also moves upward. Since the driven rack 165 is fixed, the intermediate gear 166 meshing with the active rack 164 also gradually moves upward with the active rack 164 and rolls on the driven rack 165. The upward movement of the intermediate gear 166 drives the support frame 16 to move upward, so that the lower die seat 2 of the mold 2 14 on the upper fixed seat 162 moves toward the upper die seat 2, and the mold 2 14 is closed. The upper and lower molds 13 and 14 are superimposed in the press, without increasing the clamping force of the single-layer press, and can produce two or more groups of products simultaneously, doubling the production capacity.

[0052] like Figure 1 , Figure 2 and Figure 4When it is necessary to open mold 13 and mold 2 14, the screw rod 173 is rotated in the opposite direction to move the lower fixed seat 161 downward. At this time, the support frame 16 is lowered by the active rack 164, the driven rack 165 and the intermediate gear 166, and the mold 13 and mold 2 14 are opened at the same time.

[0053] like Figure 5 and Figure 6 When the mold is opened, the lower fixed seat 161 is directly connected to the second connecting rod 177, so it is directly subjected to downward pulling force. In order to increase the pulling force on the lower mold seat 2 when the mold is opened, an actuator rod 19 is provided on the upper end surface of the lower fixed seat 161 on both sides of the mold 13. The upper end of the actuator rod 19 passes through the support frame 16 and enters the upper fixed seat 162. A slide groove 191 is provided in the upper fixed seat 162 for the upper end of the actuator rod 19 to slide. The upper end of the actuator rod 19 is threadedly connected to a limiting screw 192. One end of the limiting screw 192 enters the actuator rod 19 and is threadedly connected to the actuator rod 19. The outer diameter of the nut of the limiting screw 192 is larger than the diameter of the actuator rod 19. The upper fixed seat 162 is provided with a moving groove 193 at the upper end of the slide groove 191, which is connected to the slide groove 191 and coaxially distributed. The upper end of the moving groove 193 extends out of the upper end surface of the upper fixed seat 162, and the limiting screw 192 slides in the moving groove 193.

[0054] like Figure 5 and Figure 6 When the mold is closed, the actuator rod 19 slides in the slide groove 191. When the mold is opened, the limit screw 192 contacts the bottom of the movable groove 193. As the lower fixed seat 161 continues to move downward, the limit screw 192 exerts a downward pulling force on the upper fixed seat 162, thereby increasing the pulling force on the lower mold seat 2 when the mold is opened, which facilitates the opening of the mold 2 14.

[0055] like Figure 4 and Fig. 9The power part includes a servo motor 18 arranged on the lower large mold base 1, the rotating shaft of the servo motor 18 extends out of the bottom of the lower large mold base 1, and a driving pulley 181 is coaxially fixedly connected to one end of the extension, the lower ends of the two screw rods 173 extend out of the bottom of the lower large mold base 1 and are coaxially fixedly connected to a driven pulley 182 at one end of the extension, and a placement groove 183 for placing the driving pulley 181 and the driven pulley 182 is opened at the bottom of the lower large mold base 1, and the bottom of the placement groove 183 is rotatably connected to an intermediate pulley 184 located on one side of the two driven pulleys 182 and side pulleys 185, the middle pulley 184 is distributed toward the space between the two driven pulleys 182, the driving pulley 181 and the side pulley 185 are respectively located on the opposite side of the two driven pulleys 182, the driving pulley 181, the middle pulley 184, the side pulley 185 and the two driven pulleys 182 are connected by an annular belt 186, and the annular belt 186 sequentially connects the driving pulley 181, a driven pulley 182, the middle pulley 184, another driven pulley 182, and the side pulley 185.

[0056] like Figure 4 and Fig. 9 The function of the middle pulley 184 is to facilitate the annular belt 186 to better wrap around the two driven pulleys 182, and the function of the side pulley 185 is to facilitate the annular belt 186 to wrap around the driving pulley 181. When the servo motor 18 is working, the two driven pulleys 182 are driven to rotate in the same direction through the driving pulley 181, the middle pulley 184 and the side pulley 185, thereby facilitating the two screw rods 173 to rotate in the same direction.

[0057] like Figure 1 The lower large mold base 1, two relatively distributed plate columns 11 arranged on the upper end surface of the lower large mold base 1, the upper large mold base 12, the inverted U-shaped support frame 16, the lower fixed seat 161, and the upper fixed seat 162 form a support frame, and the support frame includes but is not limited to the above structure. The support frame makes the mold 1 13 and the mold 2 14 distributed along the vertical direction; the support frame is provided with a compensation part so that after one of the molds 13 and 14 is merged, the other mold continues to move upward.

[0058] like Figure 1 and Figure 2 and Figure 3The compensation member includes two horizontal plates 194 arranged on the support frame 16 and relatively distributed up and down. The two horizontal plates 194 are located on the upper and lower sides of the position of the support frame 16 where the intermediate gear 166 is located. Two relatively distributed vertical plates 1941 are connected between the two horizontal plates 194. The plate surface of the vertical plate 1941 is parallel to the vertical outer wall of the support frame 16. The two vertical plates 1941 are correspondingly provided with driving grooves. The vertical plate 1941 close to the outer wall of the support frame 16 can be fixedly connected to the outer wall of the support frame 16. The intermediate gear 166 is located between the two vertical plates 1941 and the intermediate gear 166 is coaxial. The rotating shaft 195 is rotatably connected, and both ends of the rotating shaft 195 are respectively provided with rectangular rods 1951 extending into the two driving grooves, and the rectangular rod 1951 slides up and down in the driving grooves. The upper and lower cross plates 194 are fixedly connected with compression springs 1952 on both sides of the middle gear 166, and one end of the compression spring 1952 is fixed on the rectangular rod 1951, and the other end is fixed on the cross plate 194. When the mold 1 13 and the mold 2 14 are in the mold opening state, the elastic force of the upper and lower compression springs 1952 of the rectangular rod 1951 makes the rectangular rod 1951 located in the middle position of the rectangular groove 1944.

[0059] like Figure 1 and Figure 2 and Figure 3 , the lower fixed seat 161 moves upward, so that after the mold 13 and the mold 2 14 are molded together, due to mold processing errors and other reasons, after the mold 2 14 is molded together, when the mold 13 is not yet molded together, the driving member 15 also drives the lower fixed seat 161 to continue to move upward, and at this time the active rack 164 continues to move upward. Since the driven rack 165 is fixed, the support frame 16 will not move upward either. Therefore, the intermediate gear 166 moves upward under the drive of the active rack 164, and then slides the rectangular rod 1951 upward in the driving groove, so that the compression spring 1952 above the rectangular rod 1951 is compressed, so as to achieve compensation when the mold 13 continues to be molded;

[0060] like Figure 1 and Figure 2 and Figure 3 When mold 13 is closed and mold 2 14 is not closed, the driving member 15 also drives the lower fixed seat 161 to continue to move upward. At this time, the lower fixed seat 161 and the support frame 16 can be understood as a whole, and the active rack 164 and the intermediate gear 166 are also a whole. As the lower fixed seat 161 continues to move upward, since the driven rack 165 is fixed, the intermediate gear 166 is engaged with the driven rack 165, which will cause the intermediate gear 166 to be downward relative to the vertical plate 1941 during the rotation process, thereby compressing the compression spring 1952 under the rectangular rod 1951 to achieve continued clamping compensation of mold 2 14.

[0061] like Figure 5 and Figure 6 A guide rail 3 169 is provided on the vertical outer wall of the support frame 16, a connecting plate 1691 located below the driven rack 165 is provided on the column 11, a slide seat 3 1692 sliding on the guide rail 3 169 is provided on the connecting plate 1691, and the guide rail 3 169 is located directly below the intermediate gear 166, so as to facilitate the movement of the support frame 16.

[0062] like Figure 1 and Figure 2 and Figure 3 The upper and lower horizontal plates 194 are provided with positioning grooves 1942 on the opposite side surfaces for the upper and lower sides of the vertical plates 1941 to slide into. When installing the vertical plates 1941, first slide the two vertical plates 1941 into the positioning grooves 1942 so that one side of the vertical plates 1941 contacts the groove wall of the positioning grooves 1942. At this time, a locking screw 1943 with one end entering into the vertical plate 1941 is threadedly connected to the horizontal plate 194. The locking screw 1943 is threadedly connected to the vertical plate 1941, which facilitates the installation of the vertical plate 1941 to the horizontal plate 194.

[0063] like Figure 1 and Figure 2 and Figure 3 The driving groove includes a rectangular groove 1944 that slides with the rectangular rod 1951 and waist-shaped grooves 1945 distributed at the upper and lower ends of the rectangular groove 1944. When the rectangular rod 1951 moves up and down in the driving groove, a part of the rectangular rod 1951 is always located in the rectangular groove 1944. The setting of the waist-shaped groove 1945 facilitates the sliding of the rectangular rod 1951 up and down.

[0064] like Figure 1 and Figure 2 and Figure 3 The active rack 164 is detachably connected to the fixed plate 163, which is convenient for replacing the active rack 164. The fixed plate 163 is threadedly connected with a plurality of fastening screws 1631, one end of the fastening screw 1631 passes through the fixed plate 163 and enters the active rack 164 and is threadedly connected with the active rack 164.

[0065] The specific structures of mold 1 13 and mold 2 14 are introduced below:

[0066] like Figure 1 The mold 13 is distributed close to the lower large mold base 1. The lower large mold base 1 is provided with an original part 1 for driving the semiconductor product on the mold 13 to automatically demould. The column 11 is provided with an original part 2 for driving the semiconductor product on the mold 2 14 to automatically demould.

[0067] like Figure 1The driving member 15 drives the mold 13 and the mold 2 14 to open and close at the same time, and when driving the mold 13 and the mold 2 14 to open at the same time, in order to facilitate the demolding of the products after injection molding in the mold 13 and the mold 2 14, the driving member 1 drives the semiconductor product on the mold 13 to be automatically demolded, and the driving member 2 drives the semiconductor product on the mold 2 14 to be automatically demolded.

[0068] like Figure 1 and Fig.10 and Fig.11 and Fig.12 The lower die base of the mold 13 includes a lower base 131 fixedly connected to the upper end surface of the lower fixed base 161, and a lower pad 132, a lower heating template 133, a lower mounting box 134 with the box opening facing upward, a lower push plate 135 located in the lower mounting box 134, a lower ejector mounting plate 136 located in the lower mounting box 134, a lower connecting plate 137 located in the lower mounting box 134, and an upper fixed plate 137 fixedly mounted on the lower connecting plate 137. The lower mold core 138 on the end face and the lower connecting plate 137 are fixedly mounted in the lower mounting box 134, the lower mold core 138 is embedded in the upper end face of the lower connecting plate 137, the lower push plate 135 and the lower ejector rod mounting plate 136 are connected together and a pushing member is provided in the lower mounting box 134 for driving the lower push plate 135 and the lower ejector rod mounting plate 136 to move up and down together, and the lower ejector rod mounting plate 136 is provided with a plurality of lower ejector rods extending from the upper end face of the lower mold core 138 on the side facing away from the lower push plate 135.

[0069] like Figure 1 and Fig.13 , Fig.14 and Fig.15 The upper mold base of the mold 13 includes an upper base 139 fixedly connected to the horizontal part of the support frame 16, and an upper pad 1391 connected to the upper base 139 in sequence from top to bottom, an upper heating template 1392, an upper mounting box 1393 with the box opening facing downward, an upper plate 1394 located in the upper mounting box 1393, an upper push plate 1395, an upper ejector mounting plate 1396 located in the upper mounting box 1393, an upper connecting plate 1397 located in the upper mounting box 1393, and a The upper mold core 1398, the upper plate 1394 and the upper connecting plate 1397 are fixedly installed in the upper mounting box 1393, the upper mold core 1398 is embedded in the lower end surface of the upper connecting plate 1397, the upper push plate 1395 and the upper ejector rod mounting plate 1396 are connected together, and a pushing member 2 is provided in the upper mounting box 1393 for driving the upper push plate 1395 and the upper ejector rod mounting plate 1396 to move up and down together, and the upper ejector rod mounting plate 1396 is provided with a plurality of upper ejector rods extending from the lower end surface of the upper mold core 1398 on the side facing away from the upper push plate 1395.

[0070] The lower ejector rod and the upper ejector rod correspond to the frame distribution of the colloid 21 after injection molding and the lead frame 2, so as to facilitate ejection of the injection molded product. The upper installation box 1393 and the lower installation box 134 are both rectangular frame-shaped.

[0071] like Figure 5 , Fig.10 , Fig.12 and Fig.13 The butt joint surface between the upper mold core 1398 and the lower mold core 138 of the mold 13 forms a mold cavity 197 and a flow channel cavity 1971. The lower mold core 138 is provided with a plastic sealing material cylinder 1972 for placing plastic sealing material. The flow channel cavity 1971 is connected with the mold cavity 197 and the plastic sealing material cylinder 1972. The middle of the plastic sealing material cylinder 1972 is through-set and extends to the lower end of the lower heating template 133. A plastic squeezing piston 1973 is slidably arranged inside the plastic sealing material cylinder 1972; a notch 1974 for placing the lower end of the plastic squeezing piston 1973 is provided on the lower base 131 and the lower pad 132, and a lifting groove 1975 corresponding to the notch 1974 is provided on the lower fixed seat 161. A lifting plate 19751 fixed to the lower end of the plastic squeezing piston 1973 is slidably connected in the lifting groove 1975, and a driving component for driving the lifting plate 19751 to rise and fall is provided in the lower fixed seat 161. A heating rod 198 and a thermocouple 1981 are provided in both the lower heating template 133 and the upper heating template 1392 .

[0072] like Figure 5 , Fig.10 , Fig.12 and Fig.13 , put the lead frame 2 into the lower mold base 1 of the mold 13. After the mold 13 is closed, the plastic sealing material in the plastic sealing material cylinder 1972 is completely melted, and the driving component drives the plastic squeezing piston 1973 to rise, squeeze the liquid plastic sealing material into the flow channel cavity 1971, and flow into the mold cavity 197, so as to realize the injection molding of the colloid 21 on the lead frame 2; when the liquid plastic sealing material is completely solidified, the mold 13 is opened.

[0073] like Figure 5 , Fig.10 , Fig.12 and Fig.13 The pushing member 1 includes two opposing U-shaped pushing blocks 1381 which are vertically slidably connected to the opposite side walls of the lower mounting box 134, and the side walls of the lower pushing plate 135 and the lower ejector rod mounting plate 136 enter the opening of the pushing block 1381; at this time, as long as the pushing block 1381 moves up and down, the lower pushing plate 135 and the lower ejector rod mounting plate 136 can be driven to move up and down, thereby realizing the ejection and movement of the lower ejector rod into the lower mold core 138.

[0074] like Figure 5 , Figure 7 , Figure 8The lower fixed seat 161 is provided with two through grooves 1611 which penetrate the lower fixed seat 161 transversely. A driving rod 1612 with two ends extending out of the two sides of the lower fixed seat 161 is placed in each through groove 1611. The upper end of the driving rod 1612 is threadedly connected with a plurality of long screws 1613 extending upward. The upper end nuts of the long screws 1613 enter the lower fixed seat 161, and a sliding sleeve 1614 is coaxially sleeved on the outer wall of the entering end. The upper end outer wall of the sliding sleeve 1614 is provided with an annular snap ring 1615. The lower fixed seat 161 is provided with a first groove 1616 for the sliding sleeve 1614 to slide into and a first groove 1616 located in the first groove 1616 and is coaxially connected to the first groove 1616, and the second groove 1617 is for the retaining ring 1615 to slide; therefore, when the driving rod 1612 moves upward, the long screw 1613 drives the sliding sleeve 1614 to move upward together, so that the sliding sleeve 1614 slides in the second groove 1617 to play a guiding role. When the driving rod 1612 moves downward, the sliding sleeve 1614 also moves downward until the lower end of the retaining ring 1615 hits the bottom of the second groove 1617, and the nut of the long screw 1613 hits the upper end of the retaining ring 1615. At this time, the driving rod 1612 drops to the lowest position.

[0075] like Figure 5 , Figure 7 , Figure 8 and Fig.11 The upper end of the driving rod 1612 is provided with a lifting rod 1618 extending vertically upward, the upper end of the lifting rod 1618 passes through the lower end of the lower base 131, and the lower end surface of the lower base 131 is provided with an inclined groove 1619, and the lower fixed seat 161 is provided with a corresponding groove 16191 corresponding to the inclined groove 1619, and an inclined block 16192 is slidably connected in the inclined groove 1619 and the corresponding groove 16191, one end of the inclined block 16192 is fixedly connected to the upper end of the lifting rod 1618, and the other end is provided with a force rod 16193 that passes through the lower end of the push block 1381 and contacts the lower end surface of the push block 1381, and the outer wall of the force rod 16193 is provided with a spring 16194, one end of the spring 16194 is fixed to the lower end surface of the lower mounting box 134, and the other end is fixed to the inclined block 16192;

[0076] like Figure 1 The first driving member includes a support seat 196 disposed on the lower large mold seat 1 and a driving rod 1961 disposed at the upper end of the support seat 196 and corresponding to the end of the driving rod 1612;

[0077] like Figure 1 and Figure 7 and Fig.10 and Fig.12The working principle of the driving part 1 is as follows: when the mold 13 is closed, the driving rod 1961 is located at the lower end of the driving rod 1612 and there is a gap. When the lower mold base 1 moves downward, the gap between the driving rod 1612 and the driving rod 1961 gradually decreases until the upper end of the driving rod 1961 hits the driving rod 1612, causing the driving rod 1612 to move upward; then the driving rod 1612 drives the lifting rod 1618 to move upward, causing the inclined block 16192 to move into the inclined groove 1619, and then the inclined block 16192 squeezes the force rod 16193, causing the force The rod 16193 pushes the lower end of the push block 1381 to move upward, so that the lower push plate 135 and the lower ejector rod mounting plate 136 move upward, thereby realizing the ejection of the lower ejector rod from the lower mold core 138, which is convenient for the demolding of the injection molded product; in this process, the spring 16194 is compressed and has an elastic restoring force. As the lower mold base moves upward, the driving rod 1612 separates from the prime mover rod 1961. The elastic restoring force of the spring 16194 makes it easy to push the lower ejector rod into the lower mold core 138. In addition, the driving rod 1612 will also move downward due to the influence of gravity if it loses the support of the prime mover rod 1961.

[0078] like Figure 1 The structures of the lower die base 1 of mold 13 and the lower die base 2 of mold 2 14 are consistent, and the prime mover 2 includes a pull rod 1962 arranged on the side opposite to each other of the two columns 11, and the two opposite ends of the two pull rods 1962 are provided with a prime mover 2 1963 extending downward in the direction of the driving rod 1612 on the lower die base 2 of mold 2 14. When the mold 2 14 is closed, the prime mover 2 1963 is located at the lower end of the driving rod 1612 on the mold 2 14 and there is a gap. When the lower die base 2 moves downward, the gap between the driving rod 1612 on the mold 2 14 and the prime mover 2 1963 gradually decreases until the upper end of the prime mover 2 1963 hits the driving rod 1612 on the mold 2 14, so that the driving rod 1612 on the mold 2 14 moves upward, and at this time, it is convenient for the prime mover 2 1963 to push the driving rod 1612 upward.

[0079] like Figure 5 and Figure 8 The driving assembly includes a clearance groove 19752 which is opened on opposite sides of the lower fixing seat 161 and is located between the two through grooves 1611. The clearance groove 19752 is connected with the through groove 1611. The two clearance grooves 19752 are located on both sides of the lifting groove 1975, and the two ends of the lifting plate 19751 extend into the two clearance grooves 19752 respectively, and a horizontally distributed driving plate 19753 is provided at one end extending into the clearance groove 19752.

[0080] like Figure 5 and Figure 8The lower fixed seat 161 is rotatably connected to two ball screws 19754 in the two clearance grooves 19752. At this time, the upper and lower ends of the two ball screws 19754 are rotatably connected to the opposite groove walls of the clearance grooves 19752. The two ball screws 19754 pass through each driving plate 19753 and are threadedly connected to the driving plate 19753. The lower fixed seat 161 is provided with a horizontal groove 19755 at the lower end of the clearance groove 19752. The lower end of each ball screw 19754 extends into the horizontal groove 19755 and the lower end of each ball screw 19754 is coaxially fixedly connected to a passive pulley 19756. The lower fixed seat 161 A motor 19757 is fixedly arranged on one side, and the rotating shaft of the motor 19757 extends downward and is coaxially fixedly connected to a driving pulley 19758. Four compression pulleys 19759 arranged opposite to each other are rotatably connected to the upper end groove wall of the horizontal groove 19755. Each compression pulley 19759 is located between the passive pulleys 19756, and the gap between the two opposite compression pulleys 19759 located on one side is smaller than the gap between the two passive pulleys 19756 located on one side. The passive pulley 19756, the compression pulley 19759 and the driving pulley 19758 are connected by an annular belt 2 1976. At this time, the arrangement of the four compression pulleys 19759 facilitates the compression of the annular belt 2 1976 on each passive pulley 19756, and makes each passive pulley 19756 rotate in the same direction.

[0081] like Figure 5 and Figure 8 The motor 19757 drives the driving pulley 19758 to rotate, and then drives each passive pulley 19756 to rotate in the same direction through the annular belt 1976, so that the four ball screws 19754 rotate, drive the driving plate 19753 to move up and down, and then drive the glue squeezing piston 1973 to move up and down.

[0082] like Fig.13 , Fig.14 and Fig.15 The second pusher member includes a relative plate 1399 arranged on the opposite side of the upper plate 1394 and the upper connecting plate 1397. The two relative plates 1399 are connected by a mounting column 13991. The outer wall of the mounting column 13991 is provided with a second spring 13992. The upper end of the second spring 13992 is fixed on the upper relative plate 1399, and the lower end is fixed on the upper push rod mounting plate 1396.

[0083] like Fig.13 , Fig.14 and Fig.15When the mold is opened, the spring 2 13992 drives the upper push plate 1395 and the upper ejector rod mounting plate 1396 to move downward together, and then pushes the upper ejector rod out of the upper mold core 1398, which is convenient for the demolding of the injection molded product. When the mold is closed, the upper ejector rod is resisted by the lower mold core 138 and is squeezed back into the upper mold core 1398. The spring 2 13992 is compressed and has an elastic restoring force. After the mold is opened, the elastic restoring force of the spring 2 13992 pushes the upper push plate 1395 and the upper ejector rod mounting plate 1396 to move downward, and then pushes the upper ejector rod out of the upper mold core 1398.

[0084] The structures of the lower die base 1 of mold 1 13 and the lower die base 2 of mold 2 14 are consistent, and the structures of the upper die base 1 of mold 1 13 and the upper die base 2 of mold 2 14 are consistent, which will not be described in detail here.

[0085] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A hot pressing servo packaging double-layer press, characterized in that: It comprises a lower large mold base (1) located on the ground and two plate-type columns (11) arranged on the upper end surface of the lower large mold base (1) and arranged opposite to each other, the upper ends of the two columns (11) are connected by an upper large mold base (12), and a mold 1 (13) and a mold 2 (14) distributed in the vertical direction are connected between the two columns (11) by a connecting piece; It also includes a driving member (15) disposed on the lower large mold base (1), wherein the driving member (15) drives the mold 1 (13) and the mold 2 (14) to open and close simultaneously; The connecting member comprises an inverted U-shaped support frame (16) slidably connected between two upright posts (11); a lower fixed seat (161) is slidably connected between two relatively distributed vertical plates of the support frame (16); a lower die seat (161) of a die (13) is fixedly connected to an upper end surface of the lower fixed seat (161); and an upper die seat (16) corresponding to the lower die seat (13) is provided on a horizontal plate surface of the support frame (16); An upper die seat 2 of a second die (14) is provided on the lower end surface of the upper large die seat (12); an upper fixed seat (162) is fixedly provided on a side of the support frame (16) facing away from the upper die seat 1; and a lower die seat 2 corresponding to the upper die seat 2 is provided on the upper fixed seat (162); The driving member (15) drives the lower fixing seat (161) to move up and down, and both ends of the support frame (16) along the width direction of the support frame (16) extend beyond both sides of the width direction of the column (11), and both ends of the lower fixing seat (161) along the width direction of the lower fixing seat (161) extend beyond both ends of the width direction of the support frame (16), and a fixing plate (163) is provided at one end of the extension, and a vertical splitter is provided at one end of the fixing plate (163) away from the lower fixing seat (161). A driving rack (164) of the cloth, a driven rack (165) corresponding to the driving rack (164) is fixedly provided on the side of the column (11), and an intermediate gear (166) is rotatably connected on the vertical plate surface of the support frame (16), and the intermediate gear (166) is located between the driving rack (164) and the driven rack (165), and the two sides of the intermediate gear (166) are respectively meshed with the driving rack (164) and the driven rack (165).

2. A hot pressing servo packaging double-layer press as claimed in claim 1, characterized in that: Two guide rails (167) are provided on the relatively vertical plate surfaces of the support frame (16), and a slide seat (1) which slides on the guide rail (167) is fixed on the side surface of the lower fixed seat (161); The two uprights (11) are each provided with a second guide rail (168) on a side surface corresponding to the upper fixed seat (162), and a second slide seat (1681) that slides on the second guide rail (168) is fixedly provided on the side surface of the upper fixed seat (162).

3. A hot pressing servo packaging double-layer press as claimed in claim 1, characterized in that: The upper end surface of the lower large mold base (1) is provided with a mounting block (17), the upper end surface of the mounting block (17) is provided with a mounting groove (171) with a notch facing upwards, the upper end surface of the mounting block (17) is provided with two extending blocks (172) extending upwards, and the two upright posts (11) are respectively fixed to the upper end surfaces of the two extending blocks (172); The driving member (15) comprises two screw rods (173) rotatably connected to the bottom of the installation groove (171), the two screw rods (173) are connected via a lifting block (174), the lifting block (174) and the two screw rods (173) are threadedly connected, the outer wall of the lifting block (174) is hinged with two groups of driving connecting rods (175) arranged opposite to each other, each group of driving connecting rods (175) is distributed corresponding to the two ends of a screw rod (173), each of the driving connecting rods (175) is hinged with a first connecting rod (176) and a second connecting rod (177) at one end away from the lifting block (174), each of the first connecting rods (176) is hinged to the extension block (172) at one end away from the driving connecting rod (175), and each of the second connecting rods (177) is hinged to the lower fixed seat (161) at one end away from the driving connecting rod (175); The lower large die base (1) is provided with a power component for driving the two screw rods (173) to rotate in the same direction.

4. A hot pressing servo packaging double-layer press as claimed in claim 3, characterized in that: The power member comprises a servo motor (18) arranged on the lower large mold base (1), the rotating shaft of the servo motor (18) extends out of the bottom of the lower large mold base (1), and a driving pulley (181) is coaxially fixedly connected to one end of the extension, the lower ends of the two screw rods (173) extend out of the bottom of the lower large mold base (1) and are coaxially fixedly connected to a driven pulley (182) at one end of the extension, and a placement groove (183) for placing the driving pulley (181) and the driven pulley (182) is provided at the bottom of the lower large mold base (1), and the bottom of the placement groove (183) is rotatably connected to an intermediate pulley (184) and a driven pulley (182) located on one side of the two driven pulleys (182). The side pulley (185) is arranged in a space between two driven pulleys (182), the driving pulley (181) and the side pulley (185) are respectively arranged on opposite sides of the two driven pulleys (182), the driving pulley (181), the intermediate pulley (184), the side pulley (185) and the two driven pulleys (182) are connected by an annular belt one (186), and the annular belt one (186) sequentially connects the driving pulley (181), a driven pulley (182), the intermediate pulley (184), another driven pulley (182) and the side pulley (185).

5. A hot pressing servo packaging double-layer press as claimed in claim 1, characterized in that: An actuator rod (19) is provided on the upper end surface of the lower fixed seat (161) on both sides of the mold 1 (13). The upper end of the actuator rod (19) passes through the support frame (16) and enters the upper fixed seat (162). A slide groove (191) is provided in the upper fixed seat (162) for the upper end of the actuator rod (19) to slide. The upper end of the actuator rod (19) is threadedly connected to a limit screw (192). One end of the limit screw (192) enters the actuator rod (19). ) and is threadedly connected to the actuator rod (19); the outer diameter of the nut of the limit screw (192) is larger than the diameter of the actuator rod (19); the upper end of the upper fixed seat (162) is provided with a movable groove (193) which is connected to the slide groove (191) and coaxially distributed; the upper end of the movable groove (193) extends out of the upper end surface of the upper fixed seat (162); and the limit screw (192) slides in the movable groove (193).

6. A hot pressing servo packaging double-layer press as claimed in claim 1, characterized in that: The position where the support frame (16) is connected to the middle gear 1 (166) is provided with two horizontal plates (194) which are arranged opposite to each other in the upper and lower directions. Two vertical plates (1941) which are arranged opposite to each other are connected between the two horizontal plates (194). The plate surfaces of the vertical plates (1941) are arranged parallel to the vertical outer walls of the support frame (16). The two vertical plates (1941) are provided with corresponding driving grooves. The middle gear 1 (166) is located between the two vertical plates (1941) and the middle gear 1 (166) is coaxially rotatably connected to a rotating shaft (195). The rotating shaft (195) is provided with a rotating shaft (195). Rectangular rods (1951) extending into the two driving grooves are provided at both ends, and the rectangular rods (1951) slide up and down in the driving grooves. The upper and lower horizontal plates (194) are fixedly connected with compression springs (1952) on both sides of the middle gear 1 (166), and one end of the compression springs (1952) is fixed on the rectangular rods (1951). When the mold 1 (13) and the mold 2 (14) are in the mold opening state, the upper and lower compression springs (1952) of the rectangular rods (1951) make the rectangular rods (1951) located in the middle position of the rectangular grooves (1944).

7. A hot pressing servo packaging double-layer press as claimed in claim 6, characterized in that: A guide rail three (169) is provided on the vertical outer wall of the support frame (16), a connecting plate (1691) located below the driven rack one (165) is provided on the column (11), and a sliding seat three (1692) sliding on the guide rail three (169) is provided on the connecting plate (1691).

8. A hot pressing servo packaging double-layer press as claimed in claim 3, characterized in that: The lower large mold base (1) is provided with a first driving part for driving the first mold (13) to automatically demould the semiconductor product, and the column (11) is provided with a second driving part for driving the second mold (14) to automatically demould the semiconductor product.

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