CN216526512U - Positioning device for checking mold sealing body and checking system - Google Patents

Abstract

The utility model discloses a positioning device and an inspection system for inspection of a mold sealing body. The positioning device for detecting the die-sealed body comprises a base, a first supporting seat, a second supporting seat and a workpiece positioning seat. One end pin joint of first supporting seat is in the base, and the second supporting seat is connected in the top of first supporting seat, can follow the first direction for first supporting seat and remove, and the work piece positioning seat is connected in the top of second supporting seat, can follow the second direction for the second supporting seat and remove, and the work piece positioning seat has location portion, and location portion is suitable for the location back of the mould, and when the back of the mould was positioned in location portion, the mould seal in the back of the mould opened the top in location portion. The positioning device for the mold sealing body inspection of the embodiment can replace manual work to position the mold sealing rear body so as to cooperate with a microscope to visually inspect the side faces of a plurality of mold sealing bodies on the mold sealing rear body.

Description

Positioning device for checking mold sealing body and checking system

Technical Field

The utility model relates to the technical field of chip manufacturing, in particular to a positioning device and an inspection system for inspection of a mold sealing body.

Background

In the chip packaging process, after the chip is subjected to surface mounting and wire bonding on the lead frame, a welded body formed by the lead frame and the chip needs to be molded. In the related art, a mold sealing process is performed by using a special mold, specifically, after a welded rear body is positioned in the mold, a mode of heating epoxy resin is adopted, so that a molten epoxy resin material flows and fills a mold sealing cavity to wrap a whole chip and a partial area of a lead frame, thereby forming the mold sealed rear body including the mold sealed body, and then, a semiconductor product is finally formed through processes of electroplating, rib cutting and the like.

In the mold sealing process, there is a risk of cracking of the mold seal due to factors such as process parameters, cleanliness of the mold, and composition of the resin material, and particularly, the inventors found that cracking is more likely to occur in the side surface of the mold seal at the position of the ejector pin of the mold. It can be understood that if the mold package has a crack defect, the reliability of the semiconductor product is seriously affected, and therefore, it is necessary to perform an appearance inspection of the mold package after the molding process to find the risk as early as possible, so as to solve the cracking problem by adjusting the above-mentioned process parameters, etc., and avoid waste due to generation of a large amount of waste products.

In the related art, since a portion to be inspected is on a side portion of the mold package, inspection using, for example, a visual inspection system is impossible, and therefore, a factory generally performs appearance inspection of the mold package by using a manually operated microscope, and specifically, an operator performs visual inspection of a plurality of mold packages on the mold package one by one under a microscope in a manner of holding the mold package by hand. It is easily understood that the visual inspection in this way is very inefficient because the operator needs to repeatedly adjust the position of the molded rear body to perform accurate focusing for clear visual inspection. In addition, because a large number of die seal bodies are arranged on a single die seal back body, the risk of missed detection exists, and the detection process is invalid. Meanwhile, the mode also causes the labor intensity of operators to be higher.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a positioning device for detecting a mold sealing body, which can position the mold sealing body to match a microscope to visually detect the side part of the mold sealing body and effectively improve the efficiency of appearance detection of the side part position of the mold sealing body.

The utility model also provides an inspection system with the positioning device for the inspection of the mold sealing body.

According to a first aspect of the present invention, a positioning device for inspection of a mold package body located at a rear body of a lead frame-based mold package comprises:

a base;

one end of the first supporting seat is pivoted to the base, and the first supporting seat can rotate around a pivoting shaft;

the second supporting seat is connected to the top of the first supporting seat and can move along a first direction relative to the first supporting seat;

the workpiece positioning seat is connected to the top of the second supporting seat and can move along a second direction relative to the second supporting seat, the workpiece positioning seat is provided with a positioning part, the positioning part is suitable for positioning the mold sealing rear body, and when the mold sealing rear body is positioned in the positioning part, the mold sealing body in the mold sealing rear body is opened at the top of the positioning part;

wherein the first direction and the second direction are perpendicular to each other, and one of the first direction and the second direction is parallel to the pivot axis.

The positioning device for the inspection of the mold sealing body, provided by the embodiment of the utility model, has at least the following beneficial effects: the positioning device for the mold sealing body inspection of the embodiment can replace manual work to position the mold sealing rear body so as to cooperate with a microscope to visually inspect the side faces of a plurality of mold sealing bodies on the mold sealing rear body. The mold sealing rear body can be placed at the positioning part of the workpiece positioning seat, and therefore the side faces of the mold sealing bodies on the mold sealing rear body can be quickly and accurately focused by a microscope along with the rotation of the first supporting seat around the pivot shaft and the movement of the second supporting seat and the station positioning seat along the first direction and the second direction respectively, so that the efficiency and the effect of appearance inspection of the mold sealing body can be effectively improved. Meanwhile, in the whole process, an operator only needs to simply operate the first supporting seat, the second supporting seat and the workpiece positioning seat, for example, the angle and the position are adjusted, so that the inspection result can be quickly and accurately obtained, and the working strength of the workpiece positioning seat can be greatly reduced.

According to some embodiments of the utility model, the positioning part comprises an open groove formed at the top of the workpiece positioning seat, the workpiece positioning seat has an insertion opening communicating with the open groove at one end far away from the pivot shaft, the insertion opening is suitable for the back mold body to be inserted, the workpiece positioning seat has a stopping part at one end close to the pivot shaft, and the stopping part is suitable for limiting the displacement of the back mold body inserted into the open groove.

According to some embodiments of the utility model, the open groove has a plurality of open grooves, the plurality of open grooves are arranged at different depths on top of the workpiece positioning seat in a stacked manner, and the plurality of open grooves are communicated with each other.

According to some embodiments of the utility model, the mold package further comprises a cover lid capable of mating connection with one of the open channels, the cover lid being provided with a plurality of viewing windows adapted to view the mold package in the mold package back body positioned in one of the open channels below the cover lid.

According to some embodiments of the present invention, each of the windows is in a strip shape, and a plurality of strip-shaped windows are arranged in a plurality of rows; or each window is in a block shape, and a plurality of block-shaped windows are arranged in a rectangular array.

According to some embodiments of the utility model, the device further comprises a first adjusting component, and the first adjusting component is used for adjusting an included angle between the first supporting seat and the base.

According to some embodiments of the utility model, the first adjusting assembly comprises a screw, a nut seat, a first knob and a connecting rod, the nut seat is slidably connected to the base away from or close to the pivot shaft, the screw is in driving connection with the nut seat, the first knob is connected to an end of the screw away from the pivot shaft, the first knob can be operatively rotated, and the connecting rod is pivotally connected to the nut seat and the first support seat respectively.

According to some embodiments of the utility model, the workpiece positioning seat further comprises a second adjusting assembly for driving the workpiece positioning seat to move along the second direction.

According to some embodiments of the utility model, the second adjustment assembly comprises an operating rod, a gear and a rack, the gear is mounted on the operating rod, the gear is in transmission connection with the rack, the operating rod is arranged to be operatively rotatable, wherein one of the gear and the rack is mounted on the second support seat, and the other is mounted on the workpiece positioning seat.

An inspection system according to an embodiment of the second aspect of the utility model, comprising:

the positioning device for the inspection of the mold package according to the embodiment of the first aspect;

the microscope is arranged above the workpiece positioning seat.

The inspection system provided by the embodiment of the utility model has at least the following beneficial effects: the positioning device for checking the mold sealing body in the checking system can replace manual work to position the mold sealing rear body, wherein the mold sealing rear body can be placed in the positioning part of the workpiece positioning seat, therefore, the side surfaces of a plurality of mold sealing bodies on the positioning device can be quickly and accurately focused by a microscope along with the rotation of the first supporting seat around the pivot shaft and the movement of the second supporting seat and the station positioning seat along the first direction and the second direction respectively, and the efficiency of the appearance checking of the mold sealing body can be effectively improved. Meanwhile, in the checking process, an operator only needs to simply operate the first supporting seat, the second supporting seat and the workpiece positioning seat, so that the side face of the die sealing body can be checked quickly and accurately, and the working strength of the die sealing body can be greatly reduced.

According to some embodiments of the utility model, the microscope further comprises a table assembly, the table assembly comprising a table and a support, the positioning device for the examination of the mold package being arranged on the table, and the microscope being arranged on the support.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the following figures and examples:

FIG. 1 is a schematic front view of a side mold of a mold used in a mold sealing process;

FIG. 2 is a schematic diagram of a molded back body formed by a molding process;

FIG. 3 is a schematic structural diagram of a positioning device for inspection of a mold package according to an embodiment of the present invention;

FIG. 4 is a schematic view of the positioning device for the inspection of the mold package in FIG. 3 at another angle;

FIG. 5 is a side schematic view of the positioning device for inspection of the molded body of FIG. 3;

FIG. 6 is a schematic front view of a workpiece locating socket of the fixture for die seal inspection of FIG. 3;

FIG. 7 is a schematic structural diagram of a shielding cover of the positioning device for the inspection of the mold sealing body according to one embodiment of the utility model;

FIG. 8 is a schematic structural view of a shielding cover of a positioning device for mold sealing body inspection according to still another embodiment of the present invention;

FIG. 9 is a schematic diagram of an inspection system according to an embodiment of the present invention.

Reference numerals:

the method comprises the following steps of (1) forming a die 10, a positioning surface 11, a die sealing cavity 12, a pouring gate 13 and a demolding thimble position 14;

a mold back body 20, a lead frame 21 and a mold body 22;

the positioning device 100 for the inspection of the mold sealing body, a base 101, a first supporting seat 102, a second supporting seat 103, a workpiece positioning seat 104, a positioning part 105, a pivoting support 106, a lead screw 107, a nut seat 108, a first knob 109, a connecting rod 110, a sliding groove 111, a first guide rail 112, a first slider 113, an operating rod 114, a second guide rail 115, a second slider 116, a second knob 117, an open groove 118, an insertion hole 119, a stopping part 120, a groove edge 121, a shielding cover 122 and a window 123;

inspection system 200, table 201, and support 202.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It can be understood that in the packaging process of the semiconductor device, after the die bonding and the wire bonding are completed on the lead frame, the post-bonding body formed by the lead frame and the chip needs to be molded. Fig. 1 is a front view of one side mold of a mold used in a molding process, and as shown in fig. 1, the mold 10 includes a positioning surface 11 for positioning a lead frame (see fig. 2), a molding cavity 12 for forming a molding body, and a runner 13. When the upper mold and the lower mold are clamped, for example, the molten epoxy resin material flows through the runner 13 and fills the mold cavity 12 to wrap the entire chip and a partial area of the lead frame, so as to form a mold back body 20 (refer to fig. 2) including the mold back body, and then the semiconductor product, such as a small chip semiconductor device, is finally formed through processes of electroplating, trimming and the like.

It should be understood that "post-bonding body" described herein refers to a combination including a lead frame and a chip, and having completed bonding wires of the chip, but not being molded, and "post-molding body" described herein refers to a combination formed by further molding the post-bonding body, and referring to fig. 2, fig. 2 is a schematic structural view of a post-molding body 20 formed by molding, where the post-molding body 20 specifically includes a lead frame 21, a chip (enclosed by the molding) and a molding 22 enclosing the chip. It is understood that one mold back body 20 includes a plurality of mold bodies 22 thereon, the mold bodies 22 are regularly distributed on the lead frame 21, and the mold bodies 22 extend in block shapes on both sides in the thickness direction of the lead frame 21. Thus, the mold package 22 includes two surfaces substantially parallel to the large face of the lead frame 21, and side faces substantially perpendicular to the large face of the lead frame 21.

It will be readily appreciated that the mold seal 22 is at risk of cracking, subject to process parameters, mold cleanliness, resin material composition, and the like.

With continued reference to fig. 1, in order to facilitate demolding, a plurality of demolding pin sites 14 are provided at locations other than the molding cavities, whereby demolding pins may be pushed against the non-molding cavities of the lead frame 21, as shown in fig. 1, and one or more of these demolding pin sites 14 are located near the edges of some of the molding cavities 12, and the inventors have found that the sides of the molding cavities 22 at these locations are more susceptible to cracking.

It is conceivable that the side surface of the molded body 22 is cracked due to any reason, and it is difficult to detect the cracking by inspection. To this end, the embodiment of the utility model provides a positioning device and an inspection system for inspection of a mold sealing body.

The positioning apparatus 100 for mold package body inspection according to the embodiment of the first aspect of the present invention is described in detail below with reference to the accompanying drawings.

Fig. 3 is a schematic structural view of a positioning device 100 for mold sealing body inspection according to an embodiment of the present invention, fig. 4 is a schematic structural view of another angle of the positioning device 100 for mold sealing body inspection in fig. 3, and referring to fig. 3 and 4, the positioning device 100 for mold sealing body inspection according to the present embodiment includes a base 101, a first supporting seat 102, a second supporting seat 103, and a workpiece positioning seat 104. One end of the first supporting base 102 is pivotally connected to the base 101, and the first supporting base 102 can rotate around a pivotal axis Z. The second support base 103 is connected to the top of the first support base 102 and is movable in a first direction relative to the first support base 102. The workpiece positioning seat 104 is connected to the top of the second support seat 103 and can move along the second direction relative to the second support seat 103, the workpiece positioning seat 104 has a positioning portion 105, the positioning portion 105 is suitable for positioning the mold sealing back body 20, and when the mold sealing back body 20 is positioned at the positioning portion 105, the mold sealing body 22 in the mold sealing back body 20 is opened at the top of the positioning portion 105. The first direction and the second direction are perpendicular to each other, and one of the first direction and the second direction is parallel to the pivot axis Z.

It is understood that the positioning device 100 for mold package body inspection of the present embodiment only realizes positioning of the mold package rear body 20, and visual inspection of the appearance thereof is accomplished depending on a microscope. Specifically, the positioning device 100 for mold package inspection of the present embodiment may position the mold package rear body 20 instead of manually to perform visual inspection of the side surfaces of the plurality of mold packages 22 on the mold package rear body 20 in cooperation with a microscope.

More specifically, the mold sealing rear body 20 can be placed on the positioning portion 105 of the workpiece positioning seat 104, so that the side surfaces of the plurality of mold sealing bodies 22 thereon can be quickly and accurately focused by the microscope along with the rotation of the first supporting seat 102 around the pivot axis Z and the movement of the second supporting seat 103 and the station positioning seat along the first direction and the second direction, respectively, thereby effectively improving the efficiency and effect of the appearance inspection of the mold sealing body 22.

Meanwhile, it can be understood that, in the process of the inspection, an operator only needs to perform simple operations, such as angle and position adjustment, on the first supporting seat 102, the second supporting seat 103 and the workpiece positioning seat 104, so as to quickly and accurately inspect the side surface of the die-sealing body 22, and thus the working strength thereof can be greatly reduced.

The base 101 of the positioning device 100 for mold package body inspection of the present embodiment serves as a mounting reference for mounting the first support base 102, and for indirectly mounting the second support base 103, the work positioning base 104, and the like. As shown in fig. 3 and 4, in some embodiments, the base 101 is a plate-shaped member, such as a metal plate, and the positioning device 100 for mold package inspection can be positioned and mounted on other devices, such as the positioning device 100 for mold package inspection is mounted on a workbench 201 (refer to fig. 9), so that the positioning device 100 for mold package inspection can be used conveniently. More specifically, the base 101 is provided with a pivot hole (not shown) on each of left and right sides of the rear end, and a pivot support 106 is pivoted to the pivot hole, so that the pair of pivot supports 106 can rotate about a pivot axis Z extending in the left-right direction. The rear end of the first supporting seat 102 is fixed on the upper surface of the pair of pivoting supports 106, for example, the rear end of the first supporting seat 102 is fixed on the pivoting supports 106 by a fastener, so that the first supporting seat 102 and the pivoting supports 106 can rotate together around the pivoting axis Z.

Referring to fig. 5, fig. 5 is a schematic side view of the positioning device 100 for mold sealing body inspection in fig. 3, and it can be understood that, by the above arrangement, the included angle α between the first supporting seat 102 and the base 101 can be changed within a set range by rotating around the pivot axis Z. For example, if the first supporting base 102 is also provided in a plate shape, the first supporting base 102 is operated to rotate so that the lower surface thereof is attached to the upper surface of the base 101, and thus α is 0 °, at this time, since the entire apparatus can be folded, it is convenient to move and store. The first supporting base 102 can also be operated to rotate around the pivot axis Z, so that α is any other angle larger than 0 °, such as 45 °, 60 °, etc. In this case, the front end of the first support base 102 may be vertically moved. It can be understood that, since the positioning device 100 for mold package inspection of the present embodiment is used to cooperate with a microscope to visually inspect the side surface of the mold package 22 in the mold package rear body 20, the angle of rotation of the first supporting seat 102 around the pivot axis Z with the lens barrel of the microscope fixed only needs to be such that the side surface of the mold package 22 can be observed by the lens of the microscope, for example, in some embodiments, the included angle between the first supporting seat 102 and the base 101 is changed between 0 ° and 60 °.

It is understood that, in this case, an operator can operate at the front end of the positioning device 100 for mold package inspection of the present embodiment, that is, the open end of the first supporting seat 102 with respect to the base 101, to visually inspect the side of the top of the mold package 22 in the mold package rear body 20 positioned therein.

As shown in fig. 3 and 4 and fig. 5, in some embodiments, the positioning apparatus 100 for the inspection of the mold package further includes a first adjusting assembly for adjusting an included angle between the first supporting seat 102 and the base 101. Therefore, an operator can conveniently adjust the included angle between the first supporting seat 102 and the base 101 by operating the first adjusting assembly.

As shown in fig. 3-5, in some embodiments, the first adjustment assembly includes a lead screw 107, a nut block 108, a first knob 109, and a connecting rod 110. Specifically, the base 101 is provided with a sliding slot 111 extending perpendicular to the pivot axis Z, i.e. in the front-back direction, the nut seat 108 is slidably connected to the sliding slot 111 so as to be able to slide along the sliding slot 111 away from or close to the pivot axis Z, the lead screw 107 is in transmission connection with the nut seat 108, the first knob 109 is connected to one end of the lead screw 107 away from the pivot axis Z, i.e. the front end of the lead screw 107, the first knob 109 can be operated to rotate so as to synchronously drive the lead screw 107 to rotate, the connecting rod 110 is respectively in pivot connection with the nut seat 108 and the first supporting seat 102, so that an operator can synchronously drive the lead screw 107 to rotate by rotating the first knob 109, and since the lead screw 107 is in transmission connection with the nut seat 108, the lead screw 107 can drive the nut seat 108 to slide in the front-back direction in the sliding slot 111 by rotating forward or reverse, it can be understood that, when the nut seat 108 is located at different positions in the sliding slot 111, the included angle α between the first supporting seat 102 and the base 101 is different. It can also be understood that, since the nut seat 108 and the lead screw 107 can be self-locked, the operator can lock the included angle α by stopping the rotation of the knob, which is very convenient.

It is to be understood that, although the first adjusting assembly composed of the lead screw 107, the nut seat 108, the first knob 109 and the connecting rod 110 is taken as an example for description, the first adjusting assembly is not limited thereto, and the adjustment of the included angle between the base 101 and the first supporting seat 102 can be realized by various suitable mechanisms. For example, the base 101 and the first supporting seat 102 may be locked with each other by a sliding rod, and will not be described herein.

As shown in fig. 3 and 4, in some embodiments, the first supporting base 102 is also a plate-shaped member, so that it can rotate around the pivot axis Z, and when the included angle α with the base 101 is 0 °, it can be engaged with the plate-shaped base 101, thereby folding the volume of the whole device. Meanwhile, two first guide rails 112 are disposed on the upper surface of the base, and are parallel to the pivot axis Z, that is, extend in the left-right direction, the two first guide rails 112 are disposed at intervals in the front-rear direction, each first guide rail 112 is slidably connected with a first slider 113, and the second support seat 103 is supported and fixedly connected to the first slider 113, so that the second support seat 103 can slide in the left-right direction, that is, in the direction parallel to the pivot axis Z. In this case, when the first supporting seat 102 rotates around the pivot axis Z, no matter how the included angle α between the first supporting seat and the base 101 changes, the second supporting seat 103 will not slide under the non-operation condition, that is, only when the operator applies an acting force to the second supporting seat 103 in the left-right direction, the second supporting seat 103 will slide, so as to drive the mold sealing rear body 20 to move in the left-right direction, for example, from the right-left direction, or from the left-right direction, so that the mold sealing bodies 22 arranged in the left-right direction along the mold sealing rear body 20 can be sequentially visually inspected by the microscope.

Referring to fig. 3 and 4, in some embodiments, the second supporting seat 103 is also a plate-shaped member, which itself drives the workpiece positioning seat 104 (and also synchronously drives the mold back 20) to move in the left-right direction, and on the other hand, provides a mounting reference for the workpiece positioning seat 104, so that the workpiece positioning seat 104 can move away from or close to the pivot axis Z (also can be considered to move in the front-back direction), thereby enabling the mold back 22 arranged in the front-back direction of the mold back 20 positioned in the workpiece positioning seat 104 to be sequentially visually inspected by the microscope.

It can be understood that, in the embodiment, the second supporting seat 103 is configured to be capable of moving along a left-right direction, i.e. a direction parallel to the pivot axis Z, and the workpiece positioning seat 104 is configured to be capable of moving along a front-back direction, i.e. a direction perpendicular to the pivot axis Z, where one of the left-right direction and the front-back direction is defined as a first direction, and the other is defined as a second direction, it is easily understood that the first direction and the second direction are perpendicular to each other. Of course, although the above description has been given by taking the example in which the second support base 103 is moved in the left-right direction and the workpiece positioning base 104 is moved in the front-rear direction, the present invention is not limited to this, and it is conceivable that the moving directions of the two may be reversed, that is, the second support base 103 is moved in the front-rear direction and the workpiece positioning base 104 is moved in the left-right direction.

It will be appreciated that in use of the positioning device 100 for mold package inspection of the present embodiment, the first support base 102 is disposed at an angle to facilitate visual inspection of the side of the mold package 22 in cooperation with a microscope at the top. In this case, in order to facilitate the inspection of the mold sealing bodies 22 with different heights, the workpiece positioning seat 104 needs to be moved in a direction away from or close to the pivot axis Z, and the workpiece positioning seat 104 itself has a certain weight, so as to facilitate the operation of the operator, the positioning device 100 for the mold sealing body inspection of the embodiment further includes a second adjusting component, and the second adjusting component is used for driving the workpiece positioning seat 104 to move away from or close to the pivot axis Z.

Specifically, the second adjustment assembly includes an operating rod 114, and a gear and rack (not shown in the figure), the gear is mounted on the operating rod 114, the gear is in transmission connection with the rack, the operating rod 114 is configured to be operatively rotated, wherein one of the gear and the rack is mounted on the second supporting seat 103, and the other one is mounted on the workpiece positioning seat 104.

For example, in this embodiment, a second guide rail 115 extending in the front-rear direction is disposed on the upper surface of the second support seat 103, and a second slider 116 connected to the second guide rail 115 in a sliding fit manner is further included, a rack is disposed on the top of the second guide rail 115 in the front-rear direction, the operating rod 114 is rotatably connected to the second slider 116, and a gear is sleeved on the stem of the operating rod 114 and is engaged with the rack. Further, for convenience of operation, the end of the operating rod 114 is provided with a second knob 117. Therefore, the operator can rotate the toothed gear by rotating the second knob 117, and the gear is meshed with the toothed rack, so that the second slider 116 can be driven to slide along the second guide rail 115, and the workpiece positioning seat 104 is indirectly driven to move away from or close to the pivot axis Z.

It can be understood that the transmission structure in the form of a gear rack can be set to have a self-locking function, so that an operator can lock the workpiece positioning seat 104 by stopping rotating the knob, unnecessary front and rear displacement cannot be generated, and the operation is very convenient.

It is understood that in the present embodiment, the workpiece positioning seat 104 is used for positioning the mold back 20, and specifically, is provided with a positioning portion 105, and the mold back 20 can be positioned by the positioning portion 105, so that the mold back 22 thereon is opened on the top of the positioning portion 105 and can be observed by a microscope.

Referring to fig. 3 and 4, in some embodiments, the positioning portion 105 includes an open slot 118 formed at the top of the workpiece positioning seat 104, the workpiece positioning seat 104 has an insertion opening 119 communicating with the open slot 118 at an end away from the pivot axis Z, the insertion opening 119 is adapted for insertion of the mold back body 20, the workpiece positioning seat 104 has a stopper portion 120 at an end near the pivot axis Z, and the stopper portion 120 is adapted to limit displacement of the mold back body 20 inserted into the open slot 118. Thus, the mold back 20 is inserted into the open groove 118 through the insertion hole 119, and both side edges of the mold back 20 are limited by the groove edges 121 on both left and right sides of the open groove 118, and the bottom of the mold back 20 is limited by the stopper 120 to position the mold back 20 in the open groove 118. Accordingly, when the angle α between the first support base 102 and the base 101 is adjusted to a proper position, the front side surfaces of all the molded bodies 22 in the molded rear body 20 are inclined upward, and can be observed by a microscope disposed above the open groove 118.

It will be appreciated that after the inspection of all the side faces of the mold package 22 to be inspected on one side of the mold package 20 is completed, the mold package 20 can be reversed and inserted back into the open slot 118 to inspect the side faces on the other side of the mold package 22.

For improved applicability, the same workpiece positioning socket 104 is used to position mold back bodies 20 of different models, specifications or sizes, for example, as shown in fig. 6, in some embodiments, the open slot 118 has a plurality of open slots 118, the plurality of open slots 118 are stacked at different depths on top of the workpiece positioning socket 104, and the plurality of open slots 118 are communicated with each other. For example, for a plurality of models of mold back bodies 20 produced in the same factory, a plurality of open grooves 118 corresponding to the sizes of the mold back bodies 20 may be formed on the same workpiece positioning seat 104 according to the specific sizes of the mold back bodies 20, so that a plurality of mold back bodies 20 of different sizes may be inspected using the same workpiece positioning seat 104 without repeatedly adjusting the apparatus, thereby reducing the cost and improving the inspection efficiency.

To further improve the efficiency of visual inspection, and with reference to fig. 7 and 8, in some embodiments, a cover 122 is included that is capable of mating with one open channel 118, the cover 122 being provided with a plurality of viewing windows 123, the viewing windows 123 being adapted to view the molded bodies 22 in the molded backs 20 in the open channels 118 positioned below the cover 122. It will be appreciated that shutter cover 122 may also be inserted into open channel 118 through insertion opening 119 as previously described. Therefore, the mold sealing body 22 needing to be inspected can be exposed in a mode of arranging the window 123 in advance, and the mold sealing body 22 not needing to be inspected can be shielded in the non-window area, so that only the mold sealing body 22 at a specific position can be inspected when the shielding cover 122 is adopted, and the inspection efficiency can be effectively improved.

As shown in fig. 7 and 8, each of the windows 123 is in a strip shape, and a plurality of strip-shaped windows 123 are arranged in a plurality of rows; or each window is block-shaped, and a plurality of block-shaped windows 123 are arranged in a rectangular array. It should be understood that the arrangement of the windows 123 is not limited thereto, and for different molded bodies 20, the positions of the molded bodies 22 to be checked are different, so that the shielding cover 122 can be designed according to different molded bodies 20, and the windows 123 thereon are arranged in different arrays at different intervals, which is not described herein.

An inspection system 200 according to an embodiment of the second aspect of the present invention is described in detail below with reference to the accompanying drawings.

Fig. 9 is a schematic structural diagram of an inspection system 200 according to an embodiment of the present invention, and referring to fig. 9, the inspection system 200 according to an embodiment of the present invention includes the positioning device 100 for die-sealing body inspection according to the first embodiment of the present invention and a microscope (not shown in the figure), wherein the microscope is disposed above the workpiece positioning seat 104. It can be understood that the mold sealing rear body 20 can be placed on the positioning portion 105 of the workpiece positioning seat 104, and therefore, the side surfaces of the plurality of mold sealing bodies 22 on the mold sealing rear body 20 can be quickly and accurately focused by the microscope located above the workpiece positioning seat 104 along with the rotation of the first supporting seat 102 around the pivot axis Z and the movement of the second supporting seat 103 and the station positioning seat along the first direction and the second direction, respectively, so that the efficiency of the appearance inspection of the mold sealing body 22 can be effectively improved.

The inspection system 200 can provide a comfortable working environment for the operator, and can effectively improve the working efficiency of the operator. In the process of inspection, an operator only needs to perform simple operations, such as angle and position adjustment, on the first support seat 102, the second support seat 103, and the workpiece positioning seat 104, so as to quickly and accurately inspect the side surface of the mold sealing body 22, thereby greatly reducing the working strength thereof.

Further, in some embodiments, the inspection system 200 further comprises a table assembly comprising a table 201 and a support 202, the positioning device 100 for the inspection of the mold package being disposed on the table 201, and the microscope being disposed on the support 202. Therefore, an operator can visually check the rear mold body 20 on the table 201, which is very convenient.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

Claims (11)

1. A positioner for the inspection of a molded body, the molded body is located at a lead frame based molded rear body, comprising:

a base;

one end of the first supporting seat is pivoted to the base, and the first supporting seat can rotate around a pivoting shaft;

the second supporting seat is connected to the top of the first supporting seat and can move along a first direction relative to the first supporting seat;

the workpiece positioning seat is connected to the top of the second supporting seat and can move along a second direction relative to the second supporting seat, the workpiece positioning seat is provided with a positioning part, the positioning part is suitable for positioning the mold sealing rear body, and when the mold sealing rear body is positioned in the positioning part, the mold sealing body in the mold sealing rear body is opened at the top of the positioning part;

wherein the first direction and the second direction are perpendicular to each other, and one of the first direction and the second direction is parallel to the pivot axis.

2. The positioning device for die seal inspection according to claim 1, wherein the positioning part comprises an open groove formed at the top of the workpiece positioning seat, the workpiece positioning seat has an insertion opening communicating with the open groove at an end away from the pivot shaft, the insertion opening is adapted for the insertion of the die seal rear body, the workpiece positioning seat has a stopper at an end close to the pivot shaft, the stopper is adapted to limit the displacement of the die seal rear body inserted into the open groove.

3. The fixture for mold package body inspection according to claim 2, wherein said open groove has a plurality of open grooves, a plurality of said open grooves are stacked at different depths on top of said work piece positioning socket, and a plurality of said open grooves are communicated with each other.

4. The fixture according to claim 3, further comprising a cover adapted to engage one of said open cavities, said cover having a plurality of windows adapted to view said mold blocks in said molded back body positioned in one of said open cavities below said cover.

5. The positioning device for mold sealing body inspection according to claim 4, wherein each of the windows is in a strip shape, and a plurality of strip-shaped windows are arranged in a plurality of rows; or each window is in a block shape, and a plurality of block-shaped windows are arranged in a rectangular array.

6. The positioning device for mold package inspection according to claim 1, further comprising a first adjusting component for adjusting an included angle between the first supporting seat and the base.

7. The positioning device for mold package inspection as claimed in claim 6, wherein the first adjustment assembly comprises a screw, a nut seat, a first knob and a connecting rod, the nut seat is slidably connected to the base away from or close to the pivot shaft, the screw is in driving connection with the nut seat, the first knob is connected with one end of the screw away from the pivot shaft, the first knob can be operated to rotate, and the connecting rod is pivoted with the nut seat and the first support seat respectively.

8. The fixture for mold package inspection as recited in claim 1, further comprising a second adjustment assembly for driving said workpiece positioning socket in said second direction.

9. The fixture for mold seal inspection according to claim 8, wherein said second adjustment assembly comprises a lever, a gear and a rack, said gear being mounted on said lever, said gear being in driving connection with said rack, said lever being configured to be operatively rotated, wherein one of said gear and rack is mounted on said second support shoe and the other is mounted on said workpiece positioning socket.

10. An inspection system, characterized by: the method comprises the following steps:

the positioning device for the inspection of the mold package according to any one of claims 1 to 9;

the microscope is arranged above the workpiece positioning seat.

11. The inspection system of claim 10, further comprising a table assembly including a table and a support, the positioning device for inspection of the encapsulation being disposed on the table, the microscope being disposed on the support.

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