A floating down press mechanism

Abstract

The application relates to a floating pressing-down mechanism, which comprises a cylinder assembly, a floating buffer assembly and the following components: a cylinder cavity, a piston rod and a sealing ring, the sealing ring being fixed on the piston rod and embedded in the inner cavity of the cylinder cavity; a buffer mounting plate, a floating connecting plate, a floating connecting rod and a thrust bearing, the thrust bearing being arranged inside the floating connecting plate, one end of the floating connecting rod being connected with the floating connecting plate and the other end being connected with the thrust bearing, the floating connecting plate being provided with a pin hole, the buffer mounting plate being provided with a floating positioning pin, and the size of the pin hole being larger than that of the floating positioning pin. The application has the advantages of simple structure, small size, high practicability, clamp positioning, and the problem of product damage caused by pressing-down.

Description

Technical Field

[0001] This invention belongs to the field of clamping technology, specifically a floating downward pressing mechanism. Background Technology

[0002] In the semiconductor electronic product testing and production process, various ICT tests are required on electronic products, necessitating product pressing and positioning. However, most existing fixtures lack sufficient positioning accuracy, and direct pressure can easily damage the product. When testing products, the fixtures are prone to inaccurate positioning, and the pressing mechanism applies direct pressure without buffering, easily damaging the electronic product and thus affecting product yield and enterprise production efficiency. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] Given the following technical problems in the existing technology: existing fixtures are prone to inaccurate positioning and the pressing mechanism directly presses down on the product without buffering.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a floating downward pressing mechanism, comprising a cylinder assembly, wherein the cylinder assembly includes a cylinder cavity, a piston rod and a sealing ring, the sealing ring being fixed on the piston rod and embedded in the inner cavity of the cylinder cavity;

[0006] A floating buffer assembly includes a buffer mounting plate, a floating connecting plate, a floating connecting rod, and a thrust bearing. The thrust bearing is disposed inside the floating connecting plate. One end of the floating connecting rod is connected to the floating connecting plate, and the other end is connected to the thrust bearing. The floating connecting plate is provided with a pin hole, and the buffer mounting plate is provided with a floating positioning pin. The size of the pin hole is larger than the size of the floating positioning pin.

[0007] As a preferred technical solution for a floating downward pressing mechanism, a piston rod locking plate is connected to the end of the piston rod.

[0008] As a preferred technical solution for a floating downward pressure mechanism, a buffer plunger is provided on the buffer mounting plate.

[0009] As a preferred technical solution for a floating downward pressure mechanism, a buffer mounting plate is used.

[0010] As a preferred technical solution for a floating downward pressing mechanism, a cylinder base plate is fixed at the bottom of the cylinder cavity.

[0011] As a preferred technical solution for a floating downward pressing mechanism, a guide sleeve is provided in the cylinder base plate, a positioning pin is fixed on the cylinder base plate, and the piston rod has a pin hole corresponding to the positioning pin.

[0012] As a preferred technical solution for a floating downward pressure mechanism, the cylinder cavity is further provided with a transition cavity and an air inlet. The transition cavity connects the inner cavity and the air inlet, and an O-ring is provided in the air inlet.

[0013] As a preferred technical solution for a floating downward pressing mechanism, the floating connecting plate is provided with a plunger hole, and the plunger hole corresponds to the position of the buffer plunger.

[0014] As a preferred technical solution for a floating downward pressing mechanism, the pin hole size is 1mm larger than that of the floating positioning pin.

[0015] The beneficial effects of this invention are: the invention has a simple and compact structure, is highly practical, and can solve the problems of clamp positioning and crushing of products by downward pressure. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0017] Figure 1 This is a schematic diagram of the overall exploded structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the buffer mounting plate and the floating connecting plate in this invention;

[0019] Figure 3 This is a schematic diagram of the overall cross-sectional structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the overall assembly structure of the present invention.

[0021] Reference numerals: Cylinder assembly 100, cylinder cavity 101, piston rod 102, sealing ring 103, inner cavity 101a, floating buffer assembly 200, buffer mounting plate 201, floating connecting plate 202, floating connecting rod 203, thrust bearing 204, pin hole 202a, floating positioning pin 201a, piston rod locking plate 104, buffer plunger 205, positioning mounting plate 206, cylinder base plate 105, guide sleeve 105a, positioning pin 106, transition cavity 101b, air inlet 101c, O-ring 101d, plunger hole 202b. Detailed Implementation

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0025] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0026] Example 1

[0027] Reference Figures 1-4 This embodiment provides a floating pressing mechanism, including a cylinder assembly 100. The cylinder assembly 100 includes a cylinder cavity 101, a piston rod 102, and a sealing ring 103. The sealing ring 103 is fixed on the piston rod 102 and is embedded in the inner cavity 101a of the cylinder cavity 101.

[0028] The floating buffer assembly 200 includes a buffer mounting plate 201, a floating connecting plate 202, a floating connecting rod 203, and a thrust bearing 204. The thrust bearing 204 is disposed inside the floating connecting plate 202. One end of the floating connecting rod 203 is connected to the floating connecting plate 202, and the other end is connected to the thrust bearing 204. The floating connecting plate 202 is provided with a pin hole 202a, and the buffer mounting plate 201 is provided with a floating positioning pin 201a. The size of the pin hole 202a is larger than the size of the floating positioning pin 201a.

[0029] A piston rod locking plate 104 is connected to the end of the piston rod 102.

[0030] A buffer plunger 205 is provided on the buffer mounting plate 201.

[0031] The bottom of the buffer mounting plate 201 is provided with a positioning mounting plate 206.

[0032] A cylinder base plate 105 is fixed to the bottom of the cylinder cavity 101.

[0033] A guide sleeve 105a is provided in the cylinder base plate 105. A locating pin 106 is fixed to the cylinder base plate 105. The piston rod 102 has a pin hole corresponding to the locating pin 106, and the pin hole size is 0.1mm larger than the locating pin 106. The piston rod 102 is a cylinder and can move up and down. When the piston rod 102 moves up and down, the locating pin 106 always remains in the pin hole corresponding to the piston rod 102. The piston rod 102 only moves up and down and does not rotate.

[0034] The cylinder cavity 101 is also provided with a transition cavity 101b and an air inlet 101c. The transition cavity 101b connects the inner cavity 101a and the air inlet 101c. An O-ring 101d is provided in the air inlet 101c.

[0035] The floating connecting plate 202 is provided with a plunger hole 202b. The plunger hole 202b corresponds to the position of the buffer plunger 205.

[0036] Assembly sequence: The sealing ring 103 is mounted on the piston rod 102 and inserted into the cylinder cavity 101. The locating pin 106 and the guide sleeve 105a are fixed to the cylinder base plate 7. The cylinder cavity 101 and the cylinder base plate 105 are then screwed together. This part constitutes a cylinder mechanism.

[0037] The piston rod locking plate 104 is connected to the piston rod 102. The piston rod locking plate 104 has a countersunk hole for the internal hexagonal screws at its bottom, and the piston rod 102 has a corresponding screw hole for fixing with internal hexagonal screws. The floating connecting plate 202 is fixed to the piston rod locking plate 104. The floating positioning pin 201a is fixed to the floating connecting plate 202 by applying anaerobic adhesive to the floating connecting plate 202 to secure it. The buffer plunger 205 is mounted on the buffer mounting plate 201. The floating connecting rod 203 is mounted on the thrust bearing 204, and then the entire assembly is installed in the buffer mounting plate 201. Finally, the positioning mounting plate 206 is fixed to the buffer mounting plate 201. Gas enters the cylinder cavity 101 from the O-ring 101d. When the inner cavity 101a is filled with gas, the piston rod 102 is pressed down; and with the buffer plunger 205 installed, the entire mechanism forms a buffered and floating mechanism.

[0038] The floating buffer assembly 200 is connected to the existing fixture cover plate assembly and is used for buffering and positioning. It plays a positioning role for the fixture and generates a reaction force when the product is pressed, thereby playing a buffering role. The cylinder assembly 100 is used to connect the floating buffer assembly 200 and provides a power for the floating buffer assembly 200 to move up and down.

[0039] The design of this mechanism requires integrating the cylinder and the buffer positioning mechanism. The entire upper part can be considered as the cylinder assembly 100. By supplying air to the top of the cylinder chamber, the piston rod 102 is pressed down, causing the entire mechanism to be positioned with the fixture. After positioning with the fixture, the air supply is cut off, at which point the entire piston rod 102 will retract. The lower part is the floating buffer assembly 200, which is connected to the piston rod 102 via a piston rod locking plate 104. The piston rod locking plate 104 has a countersunk hole for hexagonal screws at the bottom, and the piston rod has corresponding screw holes for fixing with hexagonal screws.

[0040] The entire floating buffer assembly 200 is connected by a floating connecting rod 203 and a thrust bearing 204, allowing for horizontal rotation. However, the floating positioning pin 201a is fixed to the floating connecting plate 202 with anaerobic adhesive. The buffer mounting plate 201 has a corresponding pin hole. The pin hole 202a on the buffer mounting plate 201 is 1mm larger than the floating positioning pin. Therefore, the floating positioning pin 201a can rotate within the pin hole on the buffer mounting plate, but with only 1mm of rotation space, thus forming a floating mechanism. When the assembly positioning deviation of the tooling under test is <0.5mm, a positioning pin is installed on the floating mechanism. The positioning pin has a chamfer, and a copper sleeve is added to the corresponding pin hole on the tooling under test. The copper sleeve also has a chamfer. This mechanism can automatically guide the tooling under test into its positioning hole. To prevent overpressure and damage to the product during downward pressure, a buffer mechanism is added simultaneously. Therefore, a buffer plunger is installed on the buffer mounting plate. This buffer plunger provides a certain degree of buffering force during downward pressure.

[0041] This device can solve problems such as high positioning accuracy requirements and easy damage to products during testing. It is commonly used in 3C electronics, semiconductor electronics, and ICT testing environments.

[0042] This invention features a simple and compact structure with high practicality. It solves problems such as fixture positioning and product damage during pressure by adding a floating pressure mechanism. During the pressure process, the floating mechanism is ventilated. The fixture positioning block is mounted on the floating mechanism. The floating mechanism quickly guides the product into the positioning fixture. As pressure continues to come into contact with the product, air pressure is added through the O-ring 101d at the cylinder cavity 101. At this point, the floating mechanism is filled with gas, preventing product damage caused by direct, hard pressure. This also increases the yield rate of product inspection.

[0043] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A floating downward pressure mechanism, characterized in that: include, A cylinder assembly (100) includes a cylinder cavity (101), a piston rod (102), and a sealing ring (103). The sealing ring (103) is fixed to the piston rod (102) and is embedded in the inner cavity (101a) of the cylinder cavity (101). A floating buffer assembly (200) includes a buffer mounting plate (201), a floating connecting plate (202), a floating connecting rod (203), and a thrust bearing (204). The thrust bearing (204) is disposed inside the floating connecting plate (202). One end of the floating connecting rod (203) is connected to the floating connecting plate (202), and the other end is connected to the thrust bearing (204). The floating connecting plate (202) is provided with a pin hole (202a), and the buffer mounting plate (201) is provided with a floating positioning pin (201a). The size of the pin hole (202a) is larger than the size of the floating positioning pin (201a). The piston rod (102) is connected to a piston rod locking plate (104) at its end. A buffer plunger (205) is provided on the buffer mounting plate (201); The floating connecting plate (202) is provided with a plunger hole (202b), and the plunger hole (202b) corresponds to the position of the buffer plunger (205); A floating positioning pin (201a) is fixed on a floating connecting plate (202) by applying anaerobic adhesive to the floating connecting plate (202); a buffer plunger (205) is mounted on a buffer mounting plate (201), and a floating connecting rod (203) is mounted on a thrust bearing (204), and the whole assembly is mounted in the buffer mounting plate (201); a positioning mounting plate (206) is fixed on the buffer mounting plate (201); gas enters the cylinder cavity (101) from the O-ring (101d); when the inner cavity (101a) is filled with gas, the piston rod (102) is pressed down; and a buffer plunger (205) is installed to form a buffer and floating mechanism.

2. The floating downward pressing mechanism according to claim 1, characterized in that: A positioning mounting plate (206) is provided at the bottom of the buffer mounting plate (201).

3. The floating downward pressing mechanism according to claim 2, characterized in that: The bottom of the cylinder cavity (101) is fixed with a cylinder base plate (105).

4. The floating downward pressing mechanism according to claim 3, characterized in that: A guide sleeve (105a) is provided in the cylinder base plate (105), a positioning pin (106) is fixed on the cylinder base plate (105), and a pin hole corresponding to the positioning pin (106) is provided on the piston rod (102).

5. The floating downward pressing mechanism according to claim 4, characterized in that: The cylinder cavity (101) is further provided with a transition cavity (101b) and an air inlet (101c). The transition cavity (101b) connects the inner cavity (101a) and the air inlet (101c). An O-ring (101d) is provided in the air inlet (101c).

6. The floating downward pressing mechanism according to claim 5, characterized in that: The pin hole (202a) is 1mm larger than the floating positioning pin (201a).

Images