Dimension measuring device for electronic packaging appearance

Abstract

The invention relates to the technical field of electronic packaging appearance measurement, and discloses an electronic packaging appearance size measuring device which comprises a fixed base station, a rotating mechanism is movably connected to the middle of the top end of the fixed base station, and a long diameter fixing mechanism and a short diameter fixing mechanism are movably connected to the top end of the rotating mechanism. An electronic packaging element is clamped in the center of the long-diameter fixing mechanism and the center of the short-diameter fixing mechanism, a dust collection mechanism is movably connected to the side face of the rotating mechanism, a supporting frame is fixedly connected to the top end of the fixed base table, and a size measuring instrument is fixedly connected to the top end of the supporting frame. When an output gear rotates, a supporting cylinder is driven to rotate through a gear ring, when the supporting cylinder rotates, a rotating ring and a gear groove above the rotating ring rotate, when the gear groove rotates, a long-diameter fixing mechanism and a short-diameter fixing mechanism are driven to work, and then an electronic packaging element rotates in different directions; when the size measuring instrument is used for measuring, no position which cannot be measured exists, and the measuring efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic package shape measurement, and more specifically to a device for measuring the size of an electronic package shape. Background Art

[0002] Electronic packaging is the tube shell used to install the built-in chip of the integrated circuit. It plays the role of placing, fixing and sealing, protecting the built-in chip of the integrated circuit, and enhancing the ability to adapt to the environment. The rivet points on the integrated circuit chip, that is, the contact points, are welded to the pins of the packaging tube shell. The materials used for electronic packaging are ceramics, glass and metal; The main purpose of electronic packaging appearance measurement is to ensure that electronic components have no obvious appearance defects during the packaging process, thereby ensuring their quality and reliability. Check the appearance of the components to ensure that there are no obvious damage or defects, such as cracks, oxidation, etc. Appearance inspection can also help determine the model and packaging form of the components to prepare for subsequent testing. Appearance measurement mainly measures the geometric dimensions of the components and whether there are surface defects; Nowadays, when measuring the appearance of electronic packaging, it is necessary to clamp the electronic packaging components, and then measure them with a measuring instrument. However, during the measurement, since the electronic packaging components are in a clamped state, it is impossible to measure the side facing away from the measuring instrument, so multiple clamping operations are required. The clamping position is blocked by the clamping structure and measurement is also impossible. Therefore, multiple electronic packaging components need to be adjusted multiple times, which makes the overall measurement efficiency low. When measuring, due to the high precision of electronic packaging components, the measurement environment will have a greater impact on the measurement results. For example, when external dust remains on electronic packaging components, the size measurement result will be biased larger. Therefore, the current measurement process is not accurate enough. Summary of the invention

[0003] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a device for measuring the dimensions of an electronic package outline to solve the technical problems raised in the background art.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for measuring the size of an electronic package shape, comprising a fixed base, a rotating mechanism is movably connected to the middle of the top of the fixed base, a long-diameter fixing mechanism and a short-diameter fixing mechanism are movably connected to the top of the rotating mechanism, an electronic package component is clamped at the center of the long-diameter fixing mechanism and the short-diameter fixing mechanism, a dust suction mechanism is movably connected to the side of the rotating mechanism, a support frame is fixedly connected to the top of the fixed base, and a size measuring instrument is fixedly connected to the top of the support frame; The rotating mechanism includes a servo motor that can provide power. The top of the servo motor is fixedly connected to an output shaft. The top of the output shaft is fixedly connected to an output gear. The side of the output gear meshes with a gear ring. The inside of the gear ring is fixedly connected to a support cylinder. The top of the support cylinder is fixedly connected to a conical cylinder. The top of the conical cylinder is fixedly connected to a rotating ring. The top of the rotating ring is provided with a gear groove.

[0005] In a preferred embodiment, the dimension measuring instrument is located above the center line of the electronic packaging component. The number of the major diameter fixing mechanism and the minor diameter fixing mechanism is two each. The major diameter fixing mechanism and the minor diameter fixing mechanism are alternately and equally angularly divided. The major diameter fixing mechanism is located on both sides of the major diameter of the electronic packaging component, and the minor diameter fixing mechanism is located on both sides of the minor diameter of the electronic packaging component.

[0006] In a preferred embodiment, a limiting ring is fixedly connected to the side of the support cylinder. A limiting groove adapted to the limiting ring is provided inside the fixed base. The conical cylinder is an inverted conical cylinder, and the gear grooves are respectively meshed with the major diameter fixing mechanism and the minor diameter fixing mechanism.

[0007] In a preferred embodiment, the dust suction mechanism includes a rotating gear that rotates synchronously with the output shaft. The side of the rotating gear meshes with a transmission gear. The side of the transmission gear away from the rotating gear meshes with a speed increasing gear. A blade shaft is fixedly connected inside the speed increasing gear. The top of the blade shaft is fixedly connected to a blade group.

[0008] In a preferred embodiment, the bottom end of the blade shaft is movably connected to a connecting plate. The side of the connecting plate is fixedly connected to the inside of the support cylinder. The blade group is located inside the support cylinder, and the side of the blade group does not contact the support cylinder.

[0009] In a preferred embodiment, the major diameter fixing mechanism includes a moving gear that meshes with the gear groove. A connecting shaft is fixedly connected inside the moving gear. A fixing plate is fixedly connected to the side of the connecting shaft close to the electronic packaging component. A moving connecting plate is fixedly connected to the side of the connecting shaft away from the fixing plate.

[0010] In a preferred embodiment, an electromagnet is provided at the bottom end of the side of the moving connecting plate away from the fixing plate. The bottom end of the electromagnet is fixedly connected to the top of the fixed base. A fixed rod is fixedly connected to the side of the moving connecting plate away from the electromagnet. A limiting cylinder is movably connected to the side of the fixed rod away from the moving connecting plate. A support plate is fixedly connected to the side of the limiting cylinder away from the fixed rod.

[0011] In a preferred embodiment, the bottom end of the support plate is fixedly connected to the top end of the fixed base. A support spring is movably sleeved on the side surface of the limiting cylinder. The two ends of the support spring are respectively in contact with the side surface of the support plate and the side surface of the moving connecting plate. The contact end of the moving connecting plate and the electromagnet is made of iron material.

[0012] Technical effects and advantages of the present invention: 1. When the output gear of the present invention rotates, it drives the support cylinder to rotate through the gear ring. When the support cylinder rotates, the rotating ring and the upper gear groove rotate. When the gear groove rotates, it drives the long-diameter fixing mechanism and the short-diameter fixing mechanism to work, so that the electronic packaging component rotates in different directions. There will be no unmeasurable positions when measuring with the dimension measuring instrument, improving the measurement efficiency. 2. When the long-diameter fixing mechanism of the present invention works, the electromagnet is energized to generate a magnetic repulsion force with the bottom end of the moving connecting plate, so that the moving connecting plate drives the moving gear to move towards the electronic packaging component. At this time, the moving gear enters the gear groove. At this time, the short-diameter fixing mechanism is separated from the gear groove. The moving gear rotates with the gear groove to clamp and rotate the long diameter of the electronic packaging component. After measurement, the short-diameter fixing mechanism operates. After the short-diameter fixing mechanism clamps the short diameter of the electronic packaging component, the long-diameter fixing mechanism is separated from the gear groove and rotates in another direction. When the gear groove rotates, it drives the moving gear to rotate, so that the electronic packaging component can rotate in different directions and the clamping points are also different. There is no need for manual clamping work multiple times, and there is no measurement dead point. 3. The present invention is provided with a rotating gear, a speed increasing gear, and a blade group. When the output shaft drives the output gear to rotate, it will synchronously drive the rotating gear to rotate. When the rotating gear rotates, it drives the speed increasing gear to rotate through the transmission gear. When the speed increasing gear rotates, it drives the blade group to rotate through the blade shaft. When the blade group rotates, it will pump air from inside the rotating ring, thereby sucking away the dust on the electronic packaging component and ensuring the measurement effect of the electronic packaging component. Description of the drawings

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 It is a schematic bottom view of the overall structure of the present invention.

[0015] Figure 3 It is a schematic diagram of the internal structure of the fixed base of the present invention.

[0016] Figure 4 It is a schematic diagram of the structure of the rotating mechanism of the present invention.

[0017] Figure 5 It is a schematic diagram of the structure of the dust suction mechanism of the present invention.

[0018] Figure 6Schematic structural diagram of the major-axis fixing mechanism and minor-axis fixing mechanism of the present invention.

[0019] Figure 7 Schematic overall structural diagram of the major-axis fixing mechanism of the present invention.

[0020] Figure 8 Schematic exploded structural diagram of the major-axis fixing mechanism of the present invention.

[0021] Reference numerals are: 1, fixed base; 2, support frame; 3, dimension measuring instrument; 4, rotating mechanism; 401, servo motor; 402, output shaft; 403, output gear; 404, gear ring; 405, support cylinder; 406, limiting ring; 407, conical cylinder; 408, rotating ring; 409, gear groove; 5, dust suction mechanism; 501, rotating gear; 502, driving gear; 503, speed increasing gear; 504, blade shaft; 505, blade group; 506, connecting plate; 6, major-axis fixing mechanism; 601, moving gear; 602, connecting shaft; 603, fixing plate; 604, moving connecting plate; 605, electromagnet; 606, fixing rod; 607, limiting cylinder; 608, support spring; 609, support plate; 7, minor-axis fixing mechanism; 8, electronic packaging component. Detailed implementation manners

[0022] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures described in the following implementation manners are merely examples, and a dimension measuring device for the shape of an electronic package involved in the present invention is not limited to the various structures described in the following implementation manners. All implementation manners obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0023] Referring to Figure 1 , Figure 2 and Figure 3 , the present invention provides a dimension measuring device for the shape of an electronic package, including a fixed base 1. A rotating mechanism 4 is movably connected to the middle of the top end of the fixed base 1. A major-axis fixing mechanism 6 and a minor-axis fixing mechanism 7 are movably connected to the top end of the rotating mechanism 4. An electronic packaging component 8 is clamped at the centers of the major-axis fixing mechanism 6 and the minor-axis fixing mechanism 7. A dust suction mechanism 5 is movably connected to the side of the rotating mechanism 4. A support frame 2 is fixedly connected to the top end of the fixed base 1. A dimension measuring instrument 3 is fixedly connected to the top end of the support frame 2. The dimension measuring instrument 3 is located above the center line of the electronic packaging component 8. The number of both the major-axis fixing mechanism 6 and the minor-axis fixing mechanism 7 is two. The major-axis fixing mechanism 6 and the minor-axis fixing mechanism 7 are alternately and equally angularly divided. The major-axis fixing mechanism 6 is located on both sides of the major axis of the electronic packaging component 8, and the minor-axis fixing mechanism 7 is located on both sides of the minor axis of the electronic packaging component 8.

[0024] In the embodiment of the present application, the dimension measuring instrument 3 measures the electronic packaging component 8. Therefore, the dimension measuring instrument 3 is located above the center line of the electronic packaging component 8. The major axis fixing mechanism 6 and the minor axis fixing mechanism 7 respectively clamp and fix the electronic packaging component 8 and can drive the electronic packaging component 8 to rotate. Therefore, the electronic packaging component 8 rotates in different directions to ensure that any position of the electronic packaging component 8 can be measured, improving the measurement effect.

[0025] Refer to Figure 3 、 Figure 4 、 Figure 5 and Figure 6 , the rotating mechanism 4 includes a servo motor 401 that can provide power. The top of the servo motor 401 is fixedly connected to an output shaft 402. The top of the output shaft 402 is fixedly connected to an output gear 403. The side of the output gear 403 is engaged with a gear ring 404. The inside of the gear ring 404 is fixedly connected to a support cylinder 405. The top of the support cylinder 405 is fixedly connected to a conical cylinder 407. The top of the conical cylinder 407 is fixedly connected to a rotating ring 408. A gear groove 409 is formed at the top of the rotating ring 408. A limiting ring 406 is fixedly connected to the side of the support cylinder 405. A limiting groove adapted to the limiting ring 406 is formed inside the fixed base 1. The conical cylinder 407 is an inverted conical cylinder, and the gear grooves 409 are respectively engaged with the major axis fixing mechanism 6 and the minor axis fixing mechanism 7.

[0026] In the embodiment of the present application, when the output gear 403 rotates, it drives the gear ring 404 to rotate, and then the support cylinder 405 rotates. At this time, the conical cylinder 407, the rotating ring 408 and the gear groove 409 can all rotate as a whole. When the gear groove 409 rotates, it provides power for the major axis fixing mechanism 6 and the minor axis fixing mechanism 7, enabling the major axis fixing mechanism 6 and the minor axis fixing mechanism 7 to operate. Moreover, when the support cylinder 405 rotates, the limiting ring 406 rotates in the limiting groove of the fixed base 1 to ensure the stability of the support cylinder 405 during rotation. Since the conical cylinder 407 is an inverted conical cylinder, when the electronic packaging component 8 rotates, it avoids contact between the electronic packaging component 8 and the conical cylinder 407, thereby ensuring the stability of the rotation of the electronic packaging component 8.

[0027] Refer to Figure 4 and Figure 5, the dust suction mechanism 5 includes a rotating gear 501 that rotates synchronously with the output shaft 402. A transmission gear 502 is meshed with the side surface of the rotating gear 501. A speed increasing gear 503 is meshed with the side surface of the transmission gear 502 away from the rotating gear 501. A blade shaft 504 is fixedly connected to the inside of the speed increasing gear 503. A blade group 505 is fixedly connected to the top end of the blade shaft 504. The bottom end of the blade shaft 504 is movably connected to a connecting plate 506. The side surface of the connecting plate 506 is fixedly connected to the inside of the support cylinder 405. The blade group 505 is located inside the support cylinder 405, and the side surface of the blade group 505 does not contact the support cylinder 405.

[0028] In the embodiment of the present application, after the output shaft 402 rotates, it will drive the rotating gear 501 to rotate synchronously. When the rotating gear 501 rotates, it drives the speed increasing gear 503 to rotate through the transmission gear 502. When the speed increasing gear 503 rotates, it drives the blade group 505 to rotate through the blade shaft 504. When the blade group 505 rotates, it will draw air from inside the rotating ring 408, thereby sucking away the dust on the electronic packaging component 8, avoiding dust adhesion on the electronic packaging component 8, and further ensuring the measurement accuracy of the electronic packaging component 8. The side surface of the blade group 505 does not contact the support cylinder 405 to avoid mutual contact. The diameter of the rotating gear 501 is larger than the diameter of the speed increasing gear 503, enabling the speed increasing gear 503 to rotate at an accelerated speed and improving the air extraction effect.

[0029] Refer to Figure 1 , Figure 6 , Figure 7 and Figure 8 , the major axis fixing mechanism 6 includes a moving gear 601 meshed with the gear groove 409. A connecting shaft 602 is fixedly connected to the inside of the moving gear 601. A fixing plate 603 is fixedly connected to the side surface of the connecting shaft 602 close to the electronic packaging component 8. A moving connecting plate 604 is fixedly connected to the side surface of the connecting shaft 602 away from the fixing plate 603. An electromagnet 605 is provided at the bottom end of the side surface of the moving connecting plate 604 away from the fixing plate 603. The bottom end of the electromagnet 605 is fixedly connected to the top end of the fixed base 1. A fixed rod 606 is fixedly connected to the side surface of the moving connecting plate 604 away from the electromagnet 605. A limiting cylinder 607 is movably connected to the side surface of the fixed rod 606 away from the moving connecting plate 604. A support plate 609 is fixedly connected to the side surface of the limiting cylinder 607 away from the fixed rod 606. The bottom end of the support plate 609 is fixedly connected to the top end of the fixed base 1. A support spring 608 is movably sleeved on the side surface of the limiting cylinder 607. The two ends of the support spring 608 are respectively in contact with the side surface of the support plate 609 and the side surface of the moving connecting plate 604. The contact end of the moving connecting plate 604 and the electromagnet 605 is made of iron material.

[0030] In the embodiment of the present application, the movable connecting plate 604 is made of iron material. Therefore, when the electromagnet 605 is energized, a magnetic repulsive force is generated at the bottom end of the movable connecting plate 604. Under the action of the magnetic repulsive force, the movable connecting plate 604 moves away from the electromagnet 605. Moreover, the structure of the short-diameter fixing mechanism 7 is the same as that of the long-diameter fixing mechanism 6, so that the long-diameter fixing mechanism 6 and the short-diameter fixing mechanism 7 can freely choose whether to clamp the electronic packaging component 8. When the gear groove 409 rotates, the movable gear 601 engaged with the gear groove 409 rotates. When the movable gear 601 rotates, it drives the electronic packaging component 8 to rotate through the connecting shaft 602 and the fixing plate 603. The short-diameter fixing mechanism 7 can drive the electronic packaging component 8 to rotate in different directions. The rotation directions and the clamping positions of the electronic packaging component 8 are different in two rotations, and all positions of the electronic packaging component 8 can be measured. Moreover, the spacing inside the gear groove 409 of the present application is smaller than the external spacing, but the width of each gear tooth of the gear groove 409 is the same, so that when the movable gear 601 moves from the outside to the inside, it can enter the inside of the gear groove 409.

[0031] Working principle of the present invention: Before dimension measurement, the electronic packaging component 8 is placed at the center of the long-diameter fixing mechanism 6 and the short-diameter fixing mechanism 7. The electromagnet 605 in the long-diameter fixing mechanism 6 is energized to generate a magnetic repulsive force at the bottom end of the movable connecting plate 604. Under the action of the magnetic repulsive force, the movable connecting plate 604 moves away from the electromagnet 605. Moreover, when the movable connecting plate 604 moves, it compresses the support spring 608 and synchronously drives the connecting shaft 602 and the movable gear 601 to move. When the movable gear 601 moves, the movable gear 601 enters the gear groove 409. The movable gear 601 is connected to the gear groove 409. When the connecting shaft 602 moves, it drives the fixing plate 603 to move. The two fixing plates 603 clamp and fix the electronic packaging component 8. The short-diameter fixing mechanism 7 is in a separated state from the gear groove 409 and the electronic packaging component 8. After the long diameter fixing mechanism 6 fixes the electronic packaging component 8, the servo motor 401 is started at this time. When the servo motor 401 is started, the output shaft 402 drives the output gear 403 to rotate. When the output gear 403 rotates, the support cylinder 405 is driven to rotate through the gear ring 404. When the support cylinder 405 rotates, the rotating ring 408 and the gear groove 409 are driven to rotate through the limit ring 406 and the conical cylinder 407. When the gear groove 409 rotates, the moving gear 601 engaged with the gear groove 409 rotates. When the moving gear 601 rotates, the electronic packaging component 8 is driven to rotate through the connecting shaft 602 and the fixing plate 603. The dimension measuring instrument 3 measures different surfaces of the electronic packaging component 8. After the measurement, the servo motor 401 stops. The short diameter fixing mechanism 7 has the same structure as the long diameter fixing mechanism 6. Therefore, the short diameter fixing mechanism 7 is started to clamp and fix the electronic packaging component 8. After the short diameter fixing mechanism 7 clamps and fixes the electronic packaging component 8, the electromagnet 605 in the long diameter fixing mechanism 6 is powered off. At this time, the support spring 608 resets to make the moving connecting plate 604 reset. When the moving connecting plate 604 resets, it drives the moving gear 601 to move out of the gear groove 409. At this time, the long diameter fixing mechanism 6, the gear groove 409 and the electronic packaging component 8 are all in a separated state. When the servo motor 401 is started again, the short diameter fixing mechanism 7 will drive the electronic packaging component 8 to rotate. At this time, the rotation direction and the clamping position of the electronic packaging component 8 are different. When measuring again, all positions of the electronic packaging component 8 can be measured; When measuring the electronic packaging component 8, when the servo motor 401 is started and the output shaft 402 rotates, the output shaft 402 will synchronously drive the rotating gear 501 to rotate. When the rotating gear 501 rotates, the transmission gear 502 drives the speed increasing gear 503 to rotate. When the speed increasing gear 503 rotates, the blade group 505 is driven to rotate through the blade shaft 504. When the blade group 505 rotates, it will pump air from the rotating ring 408, thereby sucking the dust on the electronic packaging component 8 away, avoiding the adhesion of dust on the electronic packaging component 8, and further ensuring the measurement accuracy of the electronic packaging component 8.

[0032] Finally: The above is only the preferred embodiment of the present invention and is not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dimensional measurement device for an electronic packaging form, comprising a fixed base (1), characterized in that: In the middle of the top end of the fixed base (1), a rotating mechanism (4) is movably connected. At the top end of the rotating mechanism (4), a major-axis fixing mechanism (6) and a minor-axis fixing mechanism (7) are movably connected. An electronic packaging component (8) is clamped at the centers of the major-axis fixing mechanism (6) and the minor-axis fixing mechanism (7). A dust suction mechanism (5) is movably connected to the side of the rotating mechanism (4). At the top end of the fixed base (1), a support frame (2) is fixedly connected. At the top end of the support frame (2), a dimension measuring instrument (3) is fixedly connected; The rotating mechanism (4) includes a servo motor (401) that can provide power. At the top end of the servo motor (401), an output shaft (402) is fixedly connected. At the top end of the output shaft (402), an output gear (403) is fixedly connected. A gear ring (404) is engaged with the side of the output gear (403). Inside the gear ring (404), a support cylinder (405) is fixedly connected. At the top end of the support cylinder (405), a conical cylinder (407) is fixedly connected. At the top end of the conical cylinder (407), a rotating ring (408) is fixedly connected. At the top end of the rotating ring (408), a gear groove (409) is formed.

2. The dimension measuring device for an electronic packaging profile according to claim 1, wherein: The dimension measuring instrument (3) is located above the center line of the electronic packaging component (8). The number of both the major-axis fixing mechanism (6) and the minor-axis fixing mechanism (7) is two. The major-axis fixing mechanism (6) and the minor-axis fixing mechanism (7) are alternately and equally angularly distributed. The major-axis fixing mechanism (6) is located on both sides of the major axis of the electronic packaging component (8). The minor-axis fixing mechanism (7) is located on both sides of the minor axis of the electronic packaging component (8).

3. The dimensional measurement device for an electronic packaging profile according to claim 1, wherein: A limit ring (406) is fixedly connected to the side of the support cylinder (405). A limit groove adapted to the limit ring (406) is formed inside the fixed base (1). The conical cylinder (407) is an inverted conical cylinder, and the gear grooves (409) are respectively engaged with the major-axis fixing mechanism (6) and the minor-axis fixing mechanism (7).

4. The dimension measuring device for an electronic packaging profile according to claim 1, wherein: The dust suction mechanism (5) includes a rotating gear (501) that rotates synchronously with the output shaft (402). A transmission gear (502) is engaged with the side of the rotating gear (501). A speed increasing gear (503) is engaged with the side of the transmission gear (502) away from the rotating gear (501). Inside the speed increasing gear (503), a blade shaft (504) is fixedly connected. At the top end of the blade shaft (504), a blade group (505) is fixedly connected.

5. The dimension measuring device for an electronic packaging profile according to claim 4, wherein: The bottom end of the blade shaft (504) is movably connected to a connecting plate (506). The side of the connecting plate (506) is fixedly connected to the inside of the support cylinder (405). The blade group (505) is located inside the support cylinder (405), and the side of the blade group (505) does not contact the support cylinder (405).

6. The dimension measuring device for an electronic packaging profile according to claim 1, wherein: The major axis fixing mechanism (6) includes a moving gear (601) meshed with the gear groove (409). A connecting shaft (602) is fixedly connected inside the moving gear (601). A fixing plate (603) is fixedly connected to the side of the connecting shaft (602) close to the electronic packaging component (8). A moving connecting plate (604) is fixedly connected to the side of the connecting shaft (602) away from the fixing plate (603).

7. A dimension measuring device for an electronic packaging profile according to claim 6, characterized in that: An electromagnet (605) is provided at the bottom end of the side of the moving connecting plate (604) away from the fixing plate (603). The bottom end of the electromagnet (605) is fixedly connected to the top end of the fixed base (1). A fixed rod (606) is fixedly connected to the side of the moving connecting plate (604) away from the electromagnet (605). A limiting cylinder (607) is movably connected to the side of the fixed rod (606) away from the moving connecting plate (604). A support plate (609) is fixedly connected to the side of the limiting cylinder (607) away from the fixed rod (606).

8. The dimension measuring device for an electronic packaging form according to claim 7, wherein: The bottom end of the support plate (609) is fixedly connected to the top end of the fixed base (1). A support spring (608) is movably sleeved on the side of the limiting cylinder (607). The two ends of the support spring (608) are respectively in contact with the side of the support plate (609) and the side of the moving connecting plate (604). The contact end of the moving connecting plate (604) and the electromagnet (605) is made of iron material.

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