Movable tube shell assembly clamp

Abstract

The utility model belongs to circuit board packaging technical field relates to a movable tube shell assembly fixture, including connecting bottom plate, tube shell fixing mechanism and PCB activity mechanism, tube shell fixing mechanism includes elastic pressure device and tube shell tray, and tube shell body is placed on tube shell tray, and elastic pressure device tightens tube shell body, PCB activity mechanism is used for adjusting the front and back position of PCBA subassembly, and it includes mounting seat, pressure plate and Y axis sliding table, Y axis sliding table slidingly fits on connecting bottom plate, and mounting plate can be detachably installed on the top surface of Y axis sliding table, and pressure plate rotatably installs at the rear end of mounting seat, and the top surface of mounting seat is equipped with the PCB placing groove, its beneficial effect is, the fixture of the present application adopts the PCB activity mechanism and can adjust the position of PCBA subassembly, to guarantee the distance of the EA pad of each batch PCBA subassembly and tube shell body meets the design value, solves the technical problem that the product performance of the product assembled by adopting the existing fixed assembly fixture is not good.

Description

Technical Field

[0001] This utility model relates to the field of circuit board packaging technology, and in particular to a movable tube shell assembly fixture. Background Technology

[0002] The housing assembly fixture is mainly used for the assembly, positioning and precision testing of electronic components (such as PCBA assemblies and housings) to ensure that the positional relationship of the components in mass production meets the design specifications.

[0003] The existing PCBA assembly fixture consists of a base, pressure plate, movable block, positioning beads, magnets, screws, and other components. The fixture works as follows: First, the PCBA assembly and housing are manually assembled and pre-fixed with adhesive using a 3D measuring machine (such as a coordinate measuring machine). Then, it is placed inside the fixture, and the position of the movable block is fixed by the housing's position. The movable block is then secured with screws and adhesive. Next, another set of PCBA assembly and housing is placed inside the fixture. The pressure plate rotates, causing the magnet to adhere to the base. The PCBA assembly is then held in place by the positioning beads on the pressure plate. Finally, the fixture is placed under the 3D measuring machine to measure whether the distance between the housing's baseline and the EA pad on the PCBA assembly meets the design value. If it does, the fixture can be used in mass production.

[0004] However, due to the difference in the position of the EA pad of different batches of incoming PCBA components, the distance between the shell and the EA pad no longer meets the design value. This results in the deterioration of the performance of products assembled using this fixed assembly fixture. Moreover, this cannot be detected in the early stages of mass production, leading to the need for rework in the later stages. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a movable tube shell assembly fixture, which solves the technical problem of poor product performance when assembled using existing fixed assembly fixtures.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] This utility model embodiment provides a movable tube shell assembly fixture for pre-fixing PCBA components and tube shell bodies, including a connecting base plate, a tube shell fixing mechanism and a PCB movable mechanism respectively installed at the front and rear ends of the connecting base plate;

[0010] The tube shell fixing mechanism includes an elastic clamping device and a tube shell tray. The tube shell body is placed on the tube shell tray, and the elastic clamping device clamps the tube shell body.

[0011] The PCB moving mechanism is used to adjust the front and rear positions of the PCBA assembly. It includes a mounting base, a pressure plate, and a Y-axis slide. The Y-axis slide slides on the connecting base plate. The mounting plate is detachably mounted on the top surface of the Y-axis slide. The pressure plate is rotatably mounted on the rear end of the mounting base. The top surface of the mounting base is provided with a PCB placement slot for placing the PCBA assembly.

[0012] Optionally, the PCB moving mechanism also includes a first knob, a mating part, and an L-shaped plate. One end of the L-shaped plate is fixed to the connecting base plate, and the other end is fixedly connected to the mating part. The first knob is threadedly connected to the mating part, and its front end touches the Y-axis slide to adjust the position of the Y-axis slide in the Y-axis direction.

[0013] Optionally, the fixture is also provided with a locking assembly, which includes a second knob and a connecting block. The connecting block is bolted to the connecting base plate, and the second knob is threaded into the connecting block and passes through the top of the connecting block to contact and lock the Y-axis slide.

[0014] Optionally, a guide rail is fixed on the top surface of the connecting base plate, and the bottom surface of the Y-axis slide table slides in conjunction with the guide rail.

[0015] Optionally, the front of the pressure plate is provided with a magnet and a positioning bead. The magnet is used to magnetically engage with the mounting base, and the positioning bead is used to press the PCBA assembly.

[0016] Optionally, a slide connecting plate is also provided between the mounting base and the Y-axis slide. The mounting base is provided with a positioning pin, and the mounting base and the slide connecting plate are magnetically engaged. The slide connecting plate and the Y-axis slide are connected together by bolts.

[0017] Optionally, the elastic clamping device includes a tube shell support, a rotating block, an elastic element, a solid shaft, and a clamping pin. The tube shell support is fixedly connected to the connecting base plate. The lower end of the solid shaft is bolted to the tube shell support. The rotating block is sleeved on the solid shaft. The elastic element is sleeved on the solid shaft, and its lower end abuts against the rotating block. The outer wall of the rotating block extends to form a mounting ear. The clamping pin is fixedly installed on the mounting ear. The tube shell tray is located below the clamping pin and is bolted to the tube shell support.

[0018] Optionally, the elastic clamping device also includes a bushing disposed between the rotating block and the solid shaft.

[0019] Optionally, the elastic clamping device also includes limiting blocks, with two limiting blocks respectively disposed on both sides of the rotating block and connected to the pipe shell support by bolts.

[0020] (III) Beneficial Effects

[0021] The beneficial effects of this utility model are:

[0022] 1. This utility model discloses a movable tube housing assembly fixture, comprising a connecting base plate, a tube housing fixing mechanism, and a PCB movable mechanism. The PCB movable mechanism includes a mounting base, a pressure plate, and a Y-axis slide. By moving the Y-axis slide back and forth, the PCBA assembly can be adjusted in the Y-axis direction (back and forth direction). In actual production, the distance between the tube housing and the EA pad can be adjusted according to different batches of PCBA assemblies, resulting in better performance of the assembled product. Compared with the existing tube housing assembly fixtures where both the tube housing and the PCBA assembly are fixed, the fixture of this application uses a PCB movable mechanism to adjust the position of the PCBA assembly, ensuring that the distance between the EA pad and the tube housing body of each batch of PCBA assembly meets the design value, effectively reducing the EA pad distance error, thereby improving the performance of the assembled product and solving the technical problem of poor product performance when using existing fixed assembly fixtures.

[0023] 2. The PCB moving mechanism is equipped with a first knob, a mating part, and an L-shaped plate. The position of the Y-axis slide in the Y-axis direction can be adjusted by turning the first knob. The fixture is equipped with a locking device. After the Y-axis slide is adjusted, the Y-axis slide can be locked by turning the second knob. The operation is convenient.

[0024] 3. The clamp of this utility model is equipped with a tube shell fixing mechanism to fix the tube shell body and a PCB moving mechanism to fix the PCBA assembly. The tube shell body and the PCBA assembly are fixed separately, so the position of the tube shell body will not be affected by the movement of the PCBA assembly, making the operation more convenient.

[0025] 4. The pressure plate is rotatably connected to the mounting base and is equipped with positioning beads and magnets. Therefore, the PCBA assembly is fixed by the flip-top magnetic attraction, making it easy to pick up and take out.

[0026] 5. The mounting base and the slide plate are connected together by magnets and positioning pins, making it more convenient and flexible to replace the mounting base.

[0027] 6. The tube shell fixing mechanism includes an elastic clamping device and a tube shell tray. The elastic clamping device includes a tube shell support, a rotating block, an elastic element, a solid shaft, and a clamping pin. The clamping pin on the rotating block automatically clamps the tube shell body downward with the help of the elastic force of the elastic element. The operator can move up and rotate the rotating block to remove the tube shell body, which is convenient to use.

[0028] 7. A bushing is provided between the rotating block and the solid shaft. The bushing is a standard copper bushing with a gap of only 0.01 to 0.03 mm between it and the solid shaft, so that the rotating block will not wobble when it rotates. A limit block is designed on both the left and right sides of the rotating block to prevent the rotating block from rotating arbitrarily when it presses against the tube shell body. Attached Figure Description

[0029] Figure 1This is one of the three-dimensional schematic diagrams of a movable tube shell assembly fixture according to the present invention;

[0030] Figure 2 This is a second three-dimensional schematic diagram of a movable tube shell assembly fixture according to the present invention;

[0031] Figure 3 This is an exploded view of a movable tube shell assembly fixture according to the present invention;

[0032] Figure 4 This is a three-dimensional schematic diagram of the tube shell fixing mechanism of a movable tube shell assembly fixture according to the present invention.

[0033] Figure 5 for Figure 1 Enlarged view of point A in the middle;

[0034] Figure 6 This is a front view schematic diagram of a movable tube shell assembly fixture according to the present invention;

[0035] Figure 7 for Figure 6 A cross-sectional view at the middle section BB.

[0036] [Explanation of Labels in the Attached Image]

[0037] 1. PCB moving mechanism; 11. Mounting base; 111. PCB placement slot; 12. Pressure plate; 121. Magnet; 122. Positioning bead; 13. Slide connecting plate; 14. Y-axis slide; 15. First knob; 16. Mating part; 17. L-shaped plate;

[0038] 2. Tube shell fixing mechanism; 21. Tube shell support; 22. Rotating block; 23. Limiting block; 24. Bushing; 25. Elastic element; 26. Solid shaft; 27. Gasket; 28. Clamping pin; 29. ​​Tube shell tray;

[0039] 3. Connecting base plate; 31. Guide rail;

[0040] 4. Tube shell body;

[0041] 5. PCBA assemblies;

[0042] 6. Second knob. Detailed Implementation

[0043] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "upper" and "lower" are used interchangeably with... Figure 1 With the orientation as a reference, the direction of the tube support 21 is "front" and the direction of the first knob 15 is "back".

[0044] This utility model provides a movable housing assembly fixture for pre-fixing PCBA assemblies and housing bodies. It includes a connecting base plate, housing fixing mechanisms and a PCB movable mechanism respectively installed at the front and rear ends of the connecting base plate. The housing fixing mechanism includes an elastic clamping device and a housing tray. The housing body is placed on the housing tray, and the elastic clamping device presses the housing body. The PCB movable mechanism is used to adjust the front and rear positions of the PCBA assembly. It includes a mounting base, a pressure plate, and a Y-axis slide. The Y-axis slide slides on the connecting base plate, the mounting plate is detachably installed on the top surface of the Y-axis slide, and the pressure plate is rotatably installed at the rear end of the mounting base. The top surface of the mounting base has a PCB placement slot for placing the PCBA assembly. Compared to the prior art, the fixture of this application, using a PCB movable mechanism, can adjust the position of the PCBA assembly, ensuring that the distance between the EA pads and the housing body of each batch of PCBA assemblies meets the design value. The assembled products have better performance, higher consistency, and smaller batch differences. This solves the technical problem of poor product performance assembled using existing fixed assembly fixtures, which cannot be detected in the early stages of mass production, leading to rework later.

[0045] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0046] Example:

[0047] Reference Figures 1 to 3 This embodiment 1 provides a movable tube shell assembly fixture for pre-fixing PCBA assembly 5 and tube shell body 4, including a connecting base plate 3, a tube shell fixing mechanism 2 and a PCB movable mechanism 1 respectively installed at the front and rear ends of the connecting base plate 3.

[0048] Among them, such as Figure 1 , Figure 3 and Figure 5As shown, the housing fixing mechanism 2 includes an elastic clamping device and a housing tray 29. The housing body 4 is placed on the housing tray 29, and the elastic clamping device presses the housing body 4. The PCB moving mechanism 1 is used to adjust the front and rear position of the PCBA assembly 5. It includes a mounting base 11, a pressure plate 12, and a Y-axis slide 14. The Y-axis slide 14 is slidably fitted on the connecting base plate 3. The mounting plate is detachably mounted on the top surface of the Y-axis slide 14. The pressure plate 12 is rotatably mounted on the rear end of the mounting base 11 via a rotating shaft. The top surface of the mounting base 11 is provided with a PCB placement groove 111 for placing the PCBA assembly 5. The PCBA assembly 5 is pre-assembled with the housing body 4 to facilitate subsequent packaging operations.

[0049] See Figure 1 and Figure 3 As a feasible solution, the PCB moving mechanism 1 also includes a first knob 15, a mating part 16, and an L-shaped plate 17. One end of the L-shaped plate 17 is fixedly connected to the connecting base plate 3, and the other end is fixedly connected to the mating part 16. The first knob 15 is threadedly connected to the mating part 16, and its front end contacts the Y-axis slide 14 to adjust the position of the Y-axis slide 14 in the Y-axis direction. In this application, the Y-axis direction refers to the front-to-back direction of the fixture, and the X-axis refers to the left-to-right direction of the fixture. The fixed connection can be a bolt connection, snap-fit, plug-in connection, welding, etc.

[0050] See Figure 7 During use, by turning the first knob 15, the first knob 15 moves back and forth on the mating part 16, thereby achieving the contact and pushing of the Y-axis slide 14, fine-tuning the position of the Y-axis slide 14, and thus changing the position of the PCBA assembly 5 in the Y-axis direction, ensuring that the distance between the EA pad of the PCBA assembly 5 and the housing body 4 meets the design value. The PCBA assembly 5 of this application can be a circuit board assembly for an optical module, or other circuit board assemblies that need to mate with the housing package.

[0051] See Figure 2 Furthermore, the fixture is also equipped with a locking assembly, which includes a second knob 6 and a connecting block. The connecting block is bolted to the connecting base plate 3. The second knob 6 is threaded into the connecting block and passes through the connecting block to contact and lock the Y-axis slide 14. After the position adjustment of the Y-axis slide 14 is completed, the position of the Y-axis slide 14 is locked by rotating the second knob 6 to ensure that the position of the Y-axis slide 14 will not shift.

[0052] See Figure 3 In some feasible solutions, a guide rail 31 is fixed on the top surface of the connecting base plate 3, and the Y-axis slide 14 is U-shaped. The bottom surface of the Y-axis slide 14 slides in cooperation with the guide rail 31, so the sliding of the Y-axis slide 14 is more stable.

[0053] In practical applications, a guide plate is provided on the top surface of the connecting base plate 3, the guide rail 31 is fixed on the top surface of the guide plate, and the Y-axis slide 14 is fitted onto the guide plate. Threaded holes are provided on both the left and right sides of the guide plate to provide installation positions for the connecting blocks of the locking assembly.

[0054] See Figure 2 and Figure 3 The front of the pressure plate 12 is provided with a magnet 121 and a positioning bead 122. The magnet 121 is used to magnetically engage with the mounting base 11, and the positioning bead 122 is used to press the PCBA assembly 5. The PCBA assembly 5 is fixed by the flip-top magnetic design of the pressure plate 12, making it easier to pick up and take out.

[0055] See Figure 3 and Figure 7 As a feasible solution, the mounting base 11 and the Y-axis slide 14 are also provided with a slide connecting plate 13. The mounting base 11 is equipped with a positioning pin, and the mounting base 11 and the slide connecting plate 13 are detachably connected together by a magnetic piece. The slide connecting plate 13 and the Y-axis slide 14 are connected together by bolts. The mounting base 11 and the pressure plate 12 are integrated as a whole, which can be flexibly disassembled and replaced according to actual needs, making it more practical.

[0056] See Figure 6 and Figure 7 The elastic clamping device includes a tube shell support 21, a rotating block 22, an elastic element 25, a solid shaft 26, and a clamping pin 28. The tube shell support 21 is fixedly connected to the connecting base plate 3. The lower end of the solid shaft 26 is bolted to the tube shell support 21. The rotating block 22 is sleeved on the solid shaft 26. The elastic element 25 is sleeved on the solid shaft 26, and its lower end abuts against the rotating block 22. The outer wall of the rotating block 22 extends to form a mounting ear. The clamping pin 28 is fixedly installed on the mounting ear. The tube shell tray 29 is located below the clamping pin 28 and is bolted to the tube shell support 21. The clamping pin 28 extends to the inner bottom surface of the tube shell body 4 and automatically clamps the tube shell body 4 under the elastic force of the elastic element 25.

[0057] The elastic element 25 can be a spring, sheet metal, etc., which automatically presses the tube housing body 4, making the assembly of the tube housing body 4 and PCBA assembly 5 more precise. Different tube housing bodies 4 require the replacement of the corresponding tube housing tray 29.

[0058] When assembling the elastic clamping device, first press the bushing 24 into the rotating block 22, install the clamping pin 28 into the mounting ear of the rotating block 22, then insert the solid shaft 26 into the bushing 24, and put the elastic element 25 on the outside of the solid shaft 26. The upper end face of the solid shaft 26 is provided with a washer 27, and the screw passes through the washer 27 and connects with the solid shaft 26. The screw passes through the tube shell support 21 and locks with the lower end face of the solid shaft 26. Then, limit blocks 23 are installed on both sides of the rotating block 22.

[0059] See Figure 3 and Figure 7 The elastic clamping device is block-shaped, with a step at the top of the PCB placement slot 111. The PCBA assembly 5 is placed on the step, and a gap is reserved between the PCBA assembly 5 and the bottom of the PCB placement slot 111. Openings are provided on the rear and left edges of the PCB placement slot 111 for easy access to the PCBA assembly 5. Both the mounting plate and the connecting base plate 3 have clearance notches on their front sides to allow the housing fixing mechanism 2 to be properly positioned so that it can be embedded into the PCB moving mechanism 1.

[0060] See Figure 7 As a feasible solution, the elastic clamping device also includes a bushing 24, which is positioned between the rotating block 22 and the solid shaft 26. The bushing 24 is a standard copper bushing, and its gap with the solid shaft 26 is only 0.01 to 0.03 mm, so that the rotating block 22 will not wobble when rotating.

[0061] like Figure 4 As shown, in practical applications, the elastic clamping device also includes limiting blocks 23. Two limiting blocks 23 are respectively set on both sides of the rotating block 22 and are connected to the pipe shell support 21 by bolts. A limiting block 23 is designed on both the left and right sides of the rotating block 22 so that the rotating block 22 will not rotate arbitrarily when pressing the pipe shell body 4.

[0062] The steps for fixing the tube shell body 4 are as follows: Place the tube shell body 4 on the tube shell tray 29, then lift the rotating block 22 and rotate it at a certain angle so that the clamping pin 28 presses against the inner bottom surface of the tube shell body 4, thereby fixing the tube shell body 4.

[0063] The steps to remove the tube shell body 4 are as follows: lift the rotating block 22 so that its height exceeds the limit block 23, then rotate it more than 90°, and then release it. The rotating block 22 is fixed by the elastic element 25. At this time, the tube shell body 4 can be removed.

[0064] After the housing body 4 is fixed, the fixture is placed under the three-dimensional measuring device. The distance between the EA pad of the PCBA assembly 5 and the housing body 4 is adjusted by the first knob 15. After adjusting the distance, the second knob 6 on the side of the Y-axis slide 14 is tightened to fix the position of the Y-axis slide 14. For different batches of PCBA assemblies 5, only the position of the Y-axis slide 14 needs to be adjusted to ensure that the distance between the EA pad of the PCBA assembly 5 and the housing body 4 of each batch meets the design value.

[0065] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0066] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0067] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0068] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0069] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A movable tube housing assembly fixture for pre-fixing PCBA assembly (5) and tube housing body (4), characterized in that: It includes a connecting base plate (3), a tube shell fixing mechanism (2) and a PCB moving mechanism (1) respectively installed at the front and rear ends of the connecting base plate (3); The shell fixing mechanism (2) includes an elastic clamping device and a shell tray (29). The shell body (4) is placed on the shell tray (29), and the elastic clamping device clamps the shell body (4). The PCB moving mechanism (1) is used to adjust the front and rear positions of the PCBA assembly (5). It includes a mounting base (11), a pressure plate (12), and a Y-axis slide (14). The Y-axis slide (14) is slidably fitted on the connecting base plate (3). The mounting base (11) is detachably mounted on the top surface of the Y-axis slide (14). The pressure plate (12) is rotatably mounted on the rear end of the mounting base (11). The top surface of the mounting base (11) is provided with a PCB placement groove (111) for placing the PCBA assembly (5).

2. The movable tube shell assembly fixture as described in claim 1, characterized in that: The PCB moving mechanism (1) also includes a first knob (15), a mating part (16) and an L-shaped plate (17). One end of the L-shaped plate (17) is fixed on the connecting base plate (3), and the other end is fixedly connected to the mating part (16). The first knob (15) is threadedly connected to the mating part (16), and its front end touches the Y-axis slide (14) to adjust the position of the Y-axis slide (14) in the Y-axis direction.

3. The movable tube shell assembly fixture as described in claim 2, characterized in that: The fixture is also provided with a locking component, which includes a second knob (6) and a connecting block. The connecting block is connected to the connecting base plate (3) by bolts. The second knob (6) is threadedly engaged with the connecting block and passes through the connecting block to contact and lock the Y-axis slide (14).

4. The movable tube shell assembly fixture as described in claim 1, characterized in that: The top surface of the connecting base plate (3) is fixed with a guide rail (31), and the bottom surface of the Y-axis slide table (14) is slidably engaged with the guide rail (31).

5. The movable tube shell assembly fixture as described in claim 1, characterized in that: The front side of the pressure plate (12) is provided with a magnet (121) and a positioning bead (122). The magnet (121) is used to magnetically engage with the mounting base (11), and the positioning bead (122) is used to press the PCBA assembly (5).

6. The movable tube shell assembly fixture as described in claim 1, characterized in that: A slide connecting plate (13) is also provided between the mounting base (11) and the Y-axis slide (14). The mounting base (11) is provided with a positioning pin. The mounting base (11) and the slide connecting plate (13) are magnetically attracted to each other. The slide connecting plate (13) and the Y-axis slide (14) are connected together by bolts.

7. The movable tube shell assembly fixture as described in claim 1, characterized in that: The elastic clamping device includes a shell support (21), a rotating block (22), an elastic element (25), a solid shaft (26), and a clamping pin (28). The shell support (21) is fixedly connected to the connecting base plate (3). The lower end of the solid shaft (26) is bolted to the shell support (21). The rotating block (22) is sleeved on the solid shaft (26). The elastic element (25) is sleeved on the solid shaft (26), and its lower end abuts against the rotating block (22). The outer wall of the rotating block (22) extends to form a mounting ear. The clamping pin (28) is fixedly installed on the mounting ear. The shell tray (29) is located below the clamping pin (28) and is bolted to the shell support (21).

8. The movable tube shell assembly fixture as described in claim 7, characterized in that: The elastic clamping device also includes a bushing (24), which is positioned between the rotating block (22) and the solid shaft (26).

9. A movable tube shell assembly fixture as described in claim 8, characterized in that: The elastic clamping device also includes a limiting block (23), with two limiting blocks (23) respectively disposed on both sides of the rotating block (22) and connected to the tube shell support (21) by bolts.

Images