Electric lifting and pressing module for testing machine
By designing an electric lifting and downcoming module combining the front and rear scissors and fork components with asymmetrically arranged front and rear scissors and fork components and the drive components, the problems of unstable and uneven force of the lower pressing module in the prior art are solved, and the effect of uniform force of the lifting carrier plate and the effect of fully connecting the upper mold fixture with the PCBA signal is achieved.
Patent Information
- Application Number
- CN202411802785.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-03-25
AI Technical Summary
The existing downcoming modules are not stable enough when downcoming, and the force they exert is not uniform enough, resulting in incomplete connection between the upper mold fixture and the PCBA signal.
An electric lifting and downcoming module for testing machines is designed, using asymmetrically arranged front and rear scissors and fork components and drive components to drive the lifting and lowering work of the lifting and lowering plate through the servo motor screw module to ensure uniform downcoming pressure.
The lifting carrier plate is achieved with a relatively uniform force during the lifting process, ensuring the full connection between the upper mold fixture and the PCBA signal, and improving the stability of the downward pressure process.
Smart Images
Figure CN119689034A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of PCBA testing, in particular to an electric lifting and pressing module for a testing machine. Background Art
[0002] With the development of innovation, the number of PCBAs used in various industries is increasing. PCBAs are widely used in electronic devices. There are various types of PCBs, which can be single-sided, multi-layered or double-sided. They can be rigid, flexible or a combination of rigid and flexible. However, during the PCBA test process, the upper mold fixture needs to be pressed with the PCBA to achieve signal connection so as to facilitate detection with the test machine, and the lower pressing module needs to be used during the pressing process.
[0003] At present, the existing pressing modules are directly driven by the screw module. This kind of module-only driving will result in insufficient stability during pressing, and thus the upper mold fixture and PCBA cannot be fully pressed together to achieve signal connection. Some pressing modules use two sets of scissor forks in conjunction with the screw module to achieve pressing, but the two sets of scissors used in this way are symmetrically arranged, so the force applied during pressing is not uniform, and the upper mold fixture and PCBA signal cannot be fully connected. Summary of the invention
[0004] The purpose of the present invention is to provide an electric lifting pressing module for a testing machine to solve the problem in the above background technology that the existing pressing module is not stable enough during pressing and the force applied during pressing is not uniform.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electric lifting and pressing module for a testing machine, comprising a casing, a lifting plate is slidably connected inside the casing, and a lifting and pressing mechanism is connected between the lifting plate and the casing, the lifting and pressing mechanism is composed of a driving assembly, a rear scissors fork assembly and a front scissors fork assembly, the driving assembly is connected to the surface of the lifting plate, and the front and rear sides of the driving assembly are respectively connected to the front and rear scissors fork assemblies, the driving assembly, the rear scissors fork assembly and the front scissors fork assembly are used to drive the lifting plate to achieve lifting work, the front scissors fork assembly and the rear scissors fork assembly are asymmetrically arranged about the central axis of the driving assembly, and an upper mold fixture is inserted into the bottom end of the lifting plate.
[0006] Preferably, a locking cylinder is installed at the center position of the top of the lifting carrier plate, and the upper mold fixture is fixed by pressing down the locking cylinder after being inserted into the bottom of the lifting carrier plate.
[0007] Preferably, positioning pins are installed at the four corners of the bottom of the upper mold jig, and the positioning pins are used for positioning the upper mold jig when it is pressed down.
[0008] Preferably, buffer components are installed on the surface of the lifting plate and on both sides of the upper mold fixture, and the buffer components perform buffering work when the upper mold fixture is pressed down; the buffer component includes a sleeve, a lower pressure frame and a buffer spring, and the sleeves are provided in two groups, each group is provided with three sleeves, and the three sleeves are fixedly connected to the surface of the lifting plate.
[0009] Preferably, the interior of the sleeve is slidably connected with a lower pressing frame, and the surface of the lower pressing frame is sleeved with three groups of buffer springs, and the top and bottom ends of the buffer springs are respectively fixed to the sleeve and the lower pressing frame.
[0010] Preferably, the driving assembly includes a left mounting plate, a servo motor screw module, a right mounting plate, a guide sleeve and a guide rod, and a left mounting plate and a right mounting plate are respectively provided on the left and right sides between the casing and the lifting carrier plate.
[0011] Preferably, a servo motor screw module is fixedly connected to the surface of the right mounting plate, and the nut block of the servo motor screw module is fixedly connected to the left mounting plate, guide sleeves are fixedly connected at the four corner positions of the surface of the left mounting plate, and the inside of the guide sleeves is slidably connected to a guide rod, and one end of the guide rod is fixedly connected to the surface of the right mounting plate.
[0012] Preferably, the rear scissors fork assembly includes a rear upper connecting plate and a rear lower connecting plate, and two of the rear upper connecting plates and the rear lower connecting plates are provided, the two rear upper connecting plates are respectively hinged at the left and right ends of the rear sides of the left mounting plate and the right mounting plate, and the top end of the rear upper connecting plate is hinged to the inner surface of the top of the casing; the two rear lower connecting plates are respectively hinged to the outer surfaces of the two rear upper connecting plates, and the bottom end of the rear lower connecting plate is hinged to the surface of the lifting carrier plate.
[0013] Preferably, the front scissors fork assembly is composed of a front upper connecting plate and a front lower connecting plate, and two of the front upper connecting plates and the front lower connecting plates are provided, the two front upper connecting plates are respectively hinged to the left and right ends of the front sides of the left mounting plate and the right mounting plate, and the top end of the front upper connecting plate is hinged to the inner surface of the top of the casing; the two front lower connecting plates are respectively hinged to the outer surfaces of the two front upper connecting plates, and the bottom end of the front lower connecting plate is hinged to the surface of the lifting carrier plate.
[0014] Preferably, the horizontal distances from the front scissors fork assembly and the rear scissors fork assembly to the central axis of the drive assembly differ by 10 mm.
[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the electric lifting and pressing module for the testing machine is provided with a lifting and pressing mechanism; when implemented, the servo motor screw module drives the left mounting plate and the right mounting plate to move under the guidance of the guide sleeve and the guide rod, and the movement will cause the rear scissor fork assembly and the front scissor fork assembly to open or close, so that the lifting and lowering plate can realize the lifting function. The front scissor fork assembly and the rear scissor fork assembly of the present invention are asymmetrically arranged with respect to the central axis of the driving assembly, and the horizontal distances of the front scissor fork assembly and the rear scissor fork assembly to the central axis of the driving assembly are 10 mm different, and at the same time, the housing, the rear scissor fork assembly, the front scissor fork assembly, the left mounting plate and the right mounting plate or the lifting and lowering plate can form a parallelogram, which will make the lifting and lowering plate receive a more uniform force. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the three-dimensional appearance structure of the present invention;
[0017] Figure 2 It is a schematic diagram of the oblique appearance structure of the present invention;
[0018] Figure 3 It is a schematic diagram of the separation state structure of the present invention;
[0019] Figure 4 It is a schematic diagram of the axonometric structure of the lifting and pressing mechanism of the present invention;
[0020] Figure 5 It is a schematic diagram of the oblique structure of the lifting and pressing mechanism of the present invention;
[0021] Figure 6 It is a schematic diagram of the enlarged structure of the inverted state of the present invention.
[0022] In the figure: 1. casing; 2. lifting carrier plate; 3. lifting and pressing mechanism; 4. upper mold fixture; 41. positioning pin; 42. locking cylinder; 5. buffer assembly; 51. sleeve; 52. pressing frame; 53. buffer spring; 6. driving assembly; 61. left mounting plate; 62. servo motor screw module; 63. right mounting plate; 64. guide sleeve; 65. guide rod; 7. rear scissor fork assembly; 71. rear upper connecting plate; 72. rear lower connecting plate; 8. front scissor fork assembly; 81. front upper connecting plate; 82. front lower connecting plate. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings 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. In addition, the terms "first", "second", "third", "upper, lower, left, right", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. At the same time, in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0024] The structure of the electric lifting and pressing die set for the testing machine provided by the present invention is as follows: Figure 1 , Figure 2 as well as Figure 4 As shown, it includes a casing 1, a lifting plate 2 is slidably connected inside the casing 1, and a lifting and pressing mechanism 3 is connected between the lifting plate 2 and the casing 1, and the lifting and pressing mechanism 3 is composed of a driving component 6, a rear scissors fork component 7 and a front scissors fork component 8. The driving component 6 is connected to the surface of the lifting plate 2, and the front and rear sides of the driving component 6 are respectively connected to the front and rear sides of the driving component 6. The driving component 6, the rear scissors fork component 7 and the front scissors fork component 8 are used to drive the lifting plate 2 to achieve lifting work, the front scissors fork component 8 and the rear scissors fork component 7 are asymmetrically arranged about the central axis of the driving component 6, and the horizontal distances of the front scissors fork component 8 and the rear scissors fork component 7 to the central axis of the driving component 6 are 10 mm different.
[0025] During implementation, the front scissors fork assembly 8 and the rear scissors fork assembly 7 of the present invention are asymmetrically arranged with respect to the central axis of the driving assembly 6, and the horizontal distances between the front scissors fork assembly 8 and the rear scissors fork assembly 7 and the central axis of the driving assembly 6 differ by 10 mm. At the same time, the housing 1, the rear scissors fork assembly 7, the front scissors fork assembly 8, the left mounting plate 61 and the servo motor screw module 62 or the lifting plate 2 can form a parallelogram, which will make the force exerted on the lifting plate 2 during lifting more uniform.
[0026] Furthermore, if Figure 2 , Figure 4 as well as Figure 5As shown, the driving assembly 6 includes a left mounting plate 61, a servo motor screw module 62, a right mounting plate 63, a guide sleeve 64 and a guide rod 65. The left mounting plate 61 and the right mounting plate 63 are respectively arranged on the left and right sides between the casing 1 and the lifting carrier plate 2. The servo motor screw module 62 is fixedly connected to the surface of the right mounting plate 63, and the nut block of the servo motor screw module 62 is fixedly connected to the left mounting plate 61. The four corner positions of the surface of the left mounting plate 61 are fixedly connected with the guide sleeve 64, and the inside of the guide sleeve 64 is slidably connected with the guide rod 65, and one end of the guide rod 65 is fixedly connected to the surface of the right mounting plate 63.
[0027] During implementation, the servo motor screw module 62 drives the left mounting plate 61 and the right mounting plate 63 to move under the guidance of the guide sleeve 64 and the guide rod 65 .
[0028] Furthermore, if Figure 4 as well as Figure 5 As shown, the rear scissor fork assembly 7 includes a rear upper connecting plate 71 and a rear lower connecting plate 72. There are two rear upper connecting plates 71 and two rear lower connecting plates 72. The two rear upper connecting plates 71 are respectively hinged to the left and right ends of the rear sides of the left mounting plate 61 and the right mounting plate 63, and the top end of the rear upper connecting plate 71 is hinged to the inner surface of the top of the casing 1; the two rear lower connecting plates 72 are respectively hinged to the outer surfaces of the two rear upper connecting plates 71, and the bottom end of the rear lower connecting plate 72 is hinged to the surface of the lifting carrier 2.
[0029] During implementation, the left mounting plate 61 and the right mounting plate 63 will cause the rear upper connecting plate 71 and the rear lower connecting plate 72 in the rear scissor fork assembly 7 to open or close when they move.
[0030] Furthermore, if Figure 4 as well as Figure 5 As shown, the front scissors fork assembly 8 is composed of a front upper connecting plate 81 and a front lower connecting plate 82. There are two front upper connecting plates 81 and two front lower connecting plates 82. The two front upper connecting plates 81 are respectively hinged to the left and right ends of the front side of the left mounting plate 61 and the right mounting plate 63, and the top end of the front upper connecting plate 81 is hinged to the inner surface of the top of the casing 1; the two front lower connecting plates 82 are respectively hinged to the outer surfaces of the two front upper connecting plates 81, and the bottom end of the front lower connecting plate 82 is hinged to the surface of the lifting carrier plate 2.
[0031] During implementation, the front upper connecting plate 81 and the front lower connecting plate 82 will be opened or closed synchronously during the process of the rear upper connecting plate 71 and the rear lower connecting plate 72 being opened or closed, thereby enabling the lifting carrier plate 2 to achieve the lifting function.
[0032] Furthermore, if Figure 2 , Figure 3 as well as Figure 6 As shown, an upper mold fixture 4 is plugged into the bottom end of the lifting carrier plate 2, a locking cylinder 42 is installed at the center position of the top of the lifting carrier plate 2, and the upper mold fixture 4 is fixed by pressing down the locking cylinder 42 after being inserted into the bottom of the lifting carrier plate 2, and positioning pins 41 are installed at the four corner positions of the bottom of the upper mold fixture 4, and the positioning pins 41 are used for positioning the upper mold fixture 4 when it is pressed down, and buffer components 5 are installed on the surface of the lifting carrier plate 2 and on both sides of the upper mold fixture 4, and the buffer components 5 perform buffering work when the upper mold fixture 4 is pressed down; the buffer component 5 includes a sleeve 51, a lower pressure frame 52 and a buffer spring 53, and the sleeve 51 is provided with two groups, each group is provided with three, and the three sleeves 51 are fixedly connected to the surface of the lifting carrier plate 2, and the lower pressure frame 52 is slidably connected inside the sleeve 51, and the surface of the lower pressure frame 52 is sleeved with three groups of buffer springs 53, and the top and bottom ends of the buffer spring 53 are respectively fixed to the sleeve 51 and the lower pressure frame 52.
[0033] During implementation, the lifting carrier plate 2 will drive the upper mold fixture 4 to move downward and contact the PCBA when pressed down. During the movement, the positioning work with the subsequent lower mold fixture is realized through the positioning pin 41. At the same time, when pressed down, the elastic force of the buffer spring 53 pushes the lower pressure frame 52 to move along the sleeve 51 to realize the buffering work when the upper mold fixture 4 is pressed down and contacts the PCBA.
[0034] Working principle: When in use, first insert the upper mold fixture 4 into the interior of the lifting carrier plate 2 for assembly. After the upper mold fixture 4 is inserted, it is pressed down and fixed by the locking cylinder 42. Then, the servo motor screw module 62 drives the left mounting plate 61 and the right mounting plate 63 to move under the guidance of the guide sleeve 64 and the guide rod 65. During the movement, the rear scissors fork assembly 7 and the front scissors fork assembly 8 will be opened or closed, so that the lifting carrier plate 2 can realize the lifting function. At the same time, since the front scissors fork assembly 8 and the rear scissors fork assembly 7 of the present invention are asymmetrically arranged with respect to the central axis of the driving assembly 6, and the horizontal distances of the front scissors fork assembly 8 and the rear scissors fork assembly 7 to the central axis of the driving assembly 6 are 10 mm different, at the same time, the casing 1, the rear scissors fork assembly 7, the front scissors fork assembly 8, the left mounting plate 61 and the right mounting plate 63 or the lifting carrier plate 2 can form a parallelogram, which will make the lifting carrier plate 2 more uniform in the lifting force.
[0035] When the lifting carrier plate 2 is pressed down, it will drive the upper mold fixture 4 to move downward to contact the PCBA. During the movement, the positioning work with the subsequent lower mold fixture is realized through the positioning pin 41. At the same time, when pressing down, the elastic force of the buffer spring 53 pushes the lower pressure frame 52 to move along the sleeve 51 to realize the buffering work when the upper mold fixture 4 is pressed down and contacts the PCBA.
[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.
Claims
1. An electric lifting and pressing module for a testing machine, comprising a housing (1), characterized in that: The casing (1) is internally slidably connected to a lifting plate (2), and a lifting and pressing mechanism (3) is connected between the lifting plate (2) and the casing (1). The lifting and pressing mechanism (3) is composed of a driving component (6), a rear scissor fork component (7) and a front scissor fork component (8). The driving component (6) is connected to the surface of the lifting plate (2), and the front and rear sides of the driving component (6) are respectively connected to the front and rear scissor fork components (8) and the rear scissor fork components (7). The driving component (6), the rear scissor fork component (7) and the front scissor fork component (8) are used to drive the lifting plate (2) to achieve lifting work. The front scissor fork component (8) and the rear scissor fork component (7) are asymmetrically arranged with respect to the central axis of the driving component (6). The bottom end of the lifting plate (2) is plugged with an upper mold fixture (4).
2. The electric lifting and pressing module for a testing machine according to claim 1, characterized in that: A locking cylinder (42) is installed at the center position of the top of the lifting plate (2), and after the upper mold fixture (4) is inserted into the bottom of the lifting plate (2), the locking cylinder (42) is pressed downward to achieve fixing.
3. The electric lifting and pressing module for a testing machine according to claim 2, characterized in that: Positioning pins (41) are installed at the four corners of the bottom of the upper mold fixture (4), and the positioning pins (41) are used for positioning the upper mold fixture (4) when it is pressed down.
4. The electric lifting and pressing module for a testing machine according to claim 1, characterized in that: Buffer components (5) are installed on the surface of the lifting plate (2) and on both sides of the upper mold fixture (4). The buffer components (5) perform buffering work when the upper mold fixture (4) is pressed downward; the buffer components (5) include a sleeve (51), a lower pressing frame (52) and a buffer spring (53). The sleeves (51) are provided in two groups, each group having three sleeves, and the three sleeves (51) are fixedly connected to the surface of the lifting plate (2).
5. The electric lifting and pressing module for a testing machine according to claim 4, characterized in that: The interior of the sleeve (51) is slidably connected to a lower pressing frame (52), and the surface of the lower pressing frame (52) is sleeved with three groups of buffer springs (53), and the top and bottom ends of the buffer springs (53) are respectively fixed to the sleeve (51) and the lower pressing frame (52).
6. The electric lifting and pressing module for a testing machine according to claim 1, characterized in that: The driving assembly (6) comprises a left mounting plate (61), a servo motor screw module (62), a right mounting plate (63), a guide sleeve (64) and a guide rod (65), and the left mounting plate (61) and the right mounting plate (63) are respectively arranged on the left and right sides between the housing (1) and the lifting carrier plate (2).
7. The electric lifting and pressing module for a testing machine according to claim 6, characterized in that: A servo motor screw module (62) is fixedly connected to the surface of the right mounting plate (63), and a nut block of the servo motor screw module (62) is fixedly connected to the left mounting plate (61). Guide sleeves (64) are fixedly connected to the four corners of the surface of the left mounting plate (61), and guide rods (65) are slidably connected to the inside of the guide sleeves (64), and one end of the guide rod (65) is fixedly connected to the surface of the right mounting plate (63).
8. The electric lifting and pressing module for a testing machine according to claim 1, characterized in that: The rear scissor fork assembly (7) comprises a rear upper connecting plate (71) and a rear lower connecting plate (72), and two rear upper connecting plates (71) and two rear lower connecting plates (72) are provided. The two rear upper connecting plates (71) are respectively hinged to the left and right ends of the rear sides of the left mounting plate (61) and the right mounting plate (63), and the top end of the rear upper connecting plate (71) is hinged to the inner surface of the top of the casing (1); the two rear lower connecting plates (72) are respectively hinged to the outer surfaces of the two rear upper connecting plates (71), and the bottom end of the rear lower connecting plate (72) is hinged to the surface of the lifting carrier plate (2).
9. The electric lifting and pressing module for a testing machine according to claim 1, characterized in that: The front scissor fork assembly (8) is composed of a front upper connecting plate (81) and a front lower connecting plate (82), and two of the front upper connecting plates (81) and the front lower connecting plates (82) are provided. The two front upper connecting plates (81) are respectively hinged to the left and right ends of the front sides of the left mounting plate (61) and the right mounting plate (63), and the top end of the front upper connecting plate (81) is hinged to the inner surface of the top of the casing (1); the two front lower connecting plates (82) are respectively hinged to the outer surfaces of the two front upper connecting plates (81), and the bottom end of the front lower connecting plate (82) is hinged to the surface of the lifting carrier plate (2).
10. The electric lifting and pressing module for a testing machine according to claim 1, characterized in that: The horizontal distances between the front scissor fork assembly (8) and the rear scissor fork assembly (7) and the central axis of the driving assembly (6) differ by 10 mm.