Assembly structure of diaphragm of diaphragm booster pump

Abstract

The utility model provides a diaphragm assembly structure of a diaphragm booster pump, the assembly structure comprises a pneumatic two-finger clamping jaw, a floating type profiling diaphragm pressure head and a floating type three-jaw pressure head, the floating type profiling diaphragm pressure head comprises a first limiting groove convex part, a second limiting groove convex part and a third limiting groove convex part, the floating type three-jaw pressing head comprises a first sliding block pressing head, a second sliding block pressing head and a third sliding block pressing head which do telescopic motion.

Description

Technical Field

[0001] The present application relates to the technical field of diaphragm pumps, and in particular to a diaphragm assembly structure of a diaphragm booster pump. Background Art

[0002] The applicant's prior patent application, CN202210944021.3, entitled "Diaphragm Booster Pump Head, Diaphragm Booster Pump, and Water Treatment Device," discloses that the bearing, transmission head, motor shaft, slider, and pump body are assembled in sequence by an eccentric wheel. The eccentric wheel makes the entire assembly eccentric, and the axial rotational freedom is not restricted. At the same time, the slider's freedom of movement is not completely restricted. Specifically, since the side bearing is pressed into the side transmission head 14, and then the inner hole of the side bearing is pressed into the eccentric wheel 13, the above is an interference fit, collectively referred to as assembly 1. The pneumatic two-finger gripper 1 is pressed into the motor shaft 15. Since the axial rotational freedom of the motor shaft 15 is not restricted, the axial rotational freedom of the pneumatic two-finger gripper 1 is also not restricted. The motor shaft 15 rotates in a diameter direction offset by the corresponding eccentricity of the eccentric wheel 13. The slider 9 is assembled to the side transmission head 14, and the guide rail directional freedom is not restricted. The same structure has three layers, the side sliders 9 and the middle slider 10. The relative positions of the three layers are not fixed, so during assembly, the diaphragm needs to be accurately installed to the specified position of the slider. Since the positions of the side sliders 9 and the middle slider 10 in the pump body are not fixed, the assembly efficiency is low and the assembly consistency is poor. Summary of the Invention

[0003] The present invention solves the problem of accurately installing the diaphragm into the assembly surface of the diaphragm to be assembled under the condition that the freedom degree of the slider is not completely restricted.

[0004] The technical solution of the present invention is: a diaphragm assembly structure of a pump, wherein the assembly structure includes a pneumatic two-finger clamp, a floating contoured diaphragm pressure head, and a floating three-jaw pressure head. The pneumatic two-finger clamp aligns the three sliders on the same assembly surface with the three windows on the corresponding assembly surface of the pump body; the floating contoured diaphragm pressure head includes a first limit groove convex portion, a second limit groove convex portion, and a third limit groove convex portion for telescopic movement, and the floating three-jaw pressure heads are arranged in pairs to form a clamping mechanism.

[0005] The pneumatic two-finger gripper includes a pump body, a connecting plate, and a gripper. The gripper includes a first gripper, a second gripper, and a supporting portion. The first gripper and the second gripper are formed with a groove. The first gripper, the second gripper, and the supporting portion are connected to the connecting plate. The connecting plate is fixed to the pump body by a fixing device.

[0006] The first clamping jaw is clamped on the side slider of the first deformation zone, the second clamping jaw is clamped on the side slider of the third deformation zone, and the supporting portion is filled in the middle slider of the second deformation zone.

[0007] The first clamping jaw, the second clamping jaw and the supporting portion are respectively moved to both sides to adjust the positions of the sliders in the first deformation zone and the third deformation zone, so that the position of the slider on the assembly surface of the pump body is centered.

[0008] The first limiting groove convex portion, the second limiting groove convex portion and the third limiting groove convex portion on the floating contoured diaphragm pressure head respectively correspond to the first limiting groove, the second limiting groove and the third limiting groove of the diaphragm sheet, and are squeezed into the slider position at the assembly surface of the pump head and pump body.

[0009] The floating three-jaw pressing head comprises a first sliding block pressing head, a second sliding block pressing head and a third sliding block pressing head that can move telescopically.

[0010] The floating three-jaw press head allows the slider assembly surface to be fixed to be parallel to the pump body assembly surface, while the structural symmetry center of the slider is fixedly aligned to the symmetry center of the rotating mechanism.

[0011] The side surface of the pump body is provided with a mounting hole, a second mounting hole and a third mounting hole, for mounting a side slider, a middle slider and a side slider respectively.

[0012] The diaphragm structure includes: a water inlet hole, a water outlet hole, a first deformation zone, a second deformation zone, a third deformation zone, a buffer cavity, a first undercut group, a first limiting groove, a second limiting groove, a second undercut group, a third limiting groove, and a third undercut group.

[0013] The first undercut group and the third undercut group are respectively matched with the undercut grooves of the two side sliders; the second undercut group is matched with the undercut groove of the middle slider.

[0014] The assembly method of the assembly structure is that the floating contoured diaphragm pressure head presses the components of the diaphragm into the pump body chamber of the booster pump, and the first limiting groove convex portion, the second limiting groove convex portion and the third limiting groove convex portion telescopically move, and during installation, the randomness of the distance from the slider assembly surface to the pump body assembly surface caused by the randomness of the relative position of the eccentric wheel of the components to be assembled is compensated.

[0015] The first slider press head, the second slider press head and the third slider press head of the floating three-jaw press head are capable of telescopic movement, and during installation, randomness of the distance from the slider assembly surface to the pump body assembly surface caused by randomness of the relative position of the eccentric wheel of the components to be assembled is compensated.

[0016] When the assembly surface of the floating three-jaw pressing head after the floating profiling diaphragm pressing head presses the diaphragm rotates to the floating three-jaw pressing head, the press-fitted diaphragm is subjected to secondary re-pressing and pressure-maintaining.

[0017] The rotating mechanism adjusts the assembly surface of the diaphragm to be assembled to the pneumatic two-finger clamp, and the floating three-jaw pressure head clamps the assembly surface of the diaphragm to be assembled; the support structure extends and supports the pump body on the assembly surface of the unassembled diaphragm; the pneumatic two-finger clamp moves to the window position of the assembly surface of the diaphragm to be assembled, and aligns the three sliders on the same assembly surface with the three windows on the corresponding assembly surface of the pump body. The pneumatic two-finger clamp returns to its initial position, and the floating contoured diaphragm pressure head extends the diaphragm assembly surface to press the diaphragm into the pump body chamber of the booster pump.

[0018] The rotating mechanism is equipped with 4 diaphragms at a time.

[0019] The rotating mechanism rotates 90° or 180° counterclockwise and 90° or 180° clockwise. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without exceeding the scope of protection required by this application.

[0021] Figure 1 This is an exploded diagram of the diaphragm assembly;

[0022] Figure 2 It is a cross-sectional view before assembly;

[0023] Figure 3 It is a cross-sectional view after assembly;

[0024] Figure 4 It is a schematic diagram of a pneumatic two-finger gripper;

[0025] Figure 5 It is a schematic diagram of a floating contoured diaphragm pressure head;

[0026] Figure 6 yes Figure 5 Schematic side view of

[0027] Figure 7 This is a schematic diagram of a floating three-jaw press head;

[0028] Figure 8 It is a schematic diagram of the pump body;

[0029] Figure 9 It is a schematic diagram of the side slider;

[0030] Figure 10 It is a schematic diagram of the middle slider;

[0031] Figure 11 is a schematic diagram of the diaphragm structure;

[0032] Figure 12 This is the assembly drawing of the slider and diaphragm;

[0033] Figure 13 It is a cross-sectional view of the assembly of the slider and the diaphragm;

[0034] Figure 14 is a schematic diagram of the support structure;

[0035] Figure 15 is a schematic diagram of the rotating mechanism;

[0036] Figure 16 is a schematic diagram of the diaphragm placement mechanism; DETAILED DESCRIPTION

[0037] Example embodiments will be described more fully below with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein. These examples are provided to make this application more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art. In the figures, identical reference numerals represent identical or similar parts, and thus their repeated description will be omitted.

[0038] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner.In the following description, many specific details are provided so as to provide a full understanding of the embodiments of the present application. However, it will be appreciated by those skilled in the art that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps etc. can be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0039] It should be understood that although the terms first, second, etc. may be used herein to describe various components, these components should not be limited by these terms. These terms are used to distinguish one component from another. Thus, the first component discussed below could be referred to as the second component without departing from the teachings of the present invention. As used herein, the term "and / or" includes any one and all combinations of one or more of the associated listed items.

[0040] Those skilled in the art will appreciate that the drawings are merely schematic diagrams of exemplary embodiments and may not be to scale. The modules or processes in the drawings are not necessarily required to implement the present application and therefore cannot be used to limit the scope of protection of the present application.

[0041] Figure 1As shown, the assembly structure of the diaphragm booster pump includes a pneumatic two-finger gripper 1, a floating contoured diaphragm pressure head 2, and a floating three-jaw pressure head 3. The pneumatic two-finger gripper 1 aligns the three sliders on the same assembly surface with the three windows on the corresponding assembly surface of the pump body.

[0042] The floating contoured diaphragm pressure head 2 presses the diaphragm component into the pump body chamber of the booster pump. The first limiting groove convex portion, the second limiting groove convex portion and the third limiting groove convex portion can move telescopically. During installation, the randomness of the distance from the slider assembly surface to the pump body assembly surface caused by the randomness of the relative position of the eccentric wheel of the component to be assembled can be automatically compensated, so that the diaphragm can be installed in place without fixing the eccentric wheel distance.

[0043] The floating three-jaw pressure head 3, the first slider pressure head, the second slider pressure head, and the third slider pressure head can move telescopically, automatically compensating for the randomness of the distance from the slider assembly surface to the pump body assembly surface caused by the randomness of the relative position of the eccentric wheels of the components to be assembled, so that the slider can be clamped and fixed without fixing the relative position of the eccentric wheels, so that the slider assembly surface is parallel to the pump body assembly surface; when the assembly surface of the floating contoured diaphragm pressure head 2 after the diaphragm is crimped is rotated to the pressure head, the pressed diaphragm can be re-pressed and maintained, further improving the crimping qualification rate; the floating three-jaw pressure heads 3 are used in pairs to form a clamping mechanism, so that the slider assembly surface is fixed to be parallel to the pump body assembly surface, and the structural symmetry center of the slider is fixedly aligned to the symmetry center of the rotating mechanism 7.

[0044] The support structure 5 has the following functions: supporting the pump body and balancing the force generated when the floating contoured diaphragm pressure head 2 presses the diaphragm, so as to prevent the assembly force of the floating contoured diaphragm pressure head 2 from bending the rotating shaft at the rotating mechanism 7.

[0045] The rotating mechanism 7 is used to automatically adjust the assembly surface of the unassembled diaphragm to the floating contoured diaphragm pressure head 2, which can automatically assemble 4 surfaces at one time, reducing the number of clamping times;

[0046] Diaphragm placement mechanism 8.

[0047] Working methods:

[0048] Step 1: Place the pump body 4 into the rotating mechanism 7; click the discharge completion button.

[0049] Step 2: After the floating three-claw press head 3 clamps the pump body 4, it moves to a position facing the support structure 5.

[0050] Step 3: Support structure 5 extends and rests on pump body 4. Pneumatic two-finger gripper 1 moves to the position of the assembly window on pump body 4. Align the three sliders on the same assembly surface with the corresponding three windows on the assembly surface of the pump body. Pneumatic two-finger gripper 1 returns to its initial position. The floating contoured diaphragm pressure head 2 extends from its diaphragm assembly surface, ready for diaphragm assembly.

[0051] Step 4: The diaphragm placement mechanism 8 picks up the first diaphragm component. The rotating arm rotates 90 degrees clockwise, pressing the diaphragm into the mounting surface of the floating contoured diaphragm press head 2. The floating contoured diaphragm press head 2 moves to the assembly window of the pump body 4 and presses the diaphragm in. The floating contoured diaphragm press head 2 moves to its initial position, the support structure 5 retracts, and the floating three-jaw press head 3 releases its grip. The diaphragm mounting surface of the floating contoured diaphragm press head 2 extends. The diaphragm placement mechanism 8 picks up the second diaphragm component. The rotating arm rotates 90 degrees clockwise, pressing the diaphragm into the mounting surface of the floating contoured diaphragm press head 2 and waiting for assembly.

[0052] Step 5: The rotating mechanism 7 rotates 180 degrees counterclockwise, and the floating three-jaw press head 3 clamps the pump body 4; the support structure 5 extends and supports the pump body 4; the pneumatic two-finger gripper 1 moves to the position of the assembly window of the pump body 4, and aligns the three sliders on the same assembly surface with the three windows on the corresponding assembly surface of the pump body. The pneumatic two-finger gripper 1 returns to its initial position. The floating contour diaphragm press head 2 moves to the position of the assembly window of the pump body 4 and presses in the second diaphragm. The floating contour diaphragm press head 2 moves to its initial position, the support structure 5 retracts its support, and the floating three-jaw press head 3 releases its grip. The diaphragm assembly surface of the floating contour diaphragm press head 2 extends, and the diaphragm placement mechanism 8 picks up the third diaphragm part. The rotating arm rotates 90 degrees clockwise, pressing the diaphragm into the assembly surface of the floating contour diaphragm press head 2, and waits for assembly.

[0053] Step 6: The rotating mechanism 8 rotates 90 degrees counterclockwise, and the floating three-jaw press head 3 clamps the pump body 4; the support structure 5 extends and supports the pump body 4; the pneumatic two-finger gripper 1 moves to the position of the assembly window of the pump body 4, and aligns the three sliders on the same assembly surface with the three windows on the corresponding assembly surface of the pump body. The pneumatic two-finger gripper 1 returns to its initial position. The floating contour diaphragm press head 2 moves to the position of the assembly window of the pump body 4 and presses in the third diaphragm. The floating contour diaphragm press head 2 moves to its initial position, the support structure 5 retracts its support, and the floating three-jaw press head 3 releases its grip. The diaphragm assembly surface of the floating contour diaphragm press head 2 extends, and the diaphragm placement mechanism 8 picks up the fourth diaphragm part. The rotating arm rotates 90 degrees clockwise, pressing the diaphragm into the assembly surface of the floating contour diaphragm press head 2, and waits for assembly.

[0054] Step 7: Rotating mechanism 7 rotates 180 degrees clockwise, and the floating three-jaw press head 3 clamps the pump body 4. The support structure 5 extends and supports the pump body 4. The pneumatic two-finger gripper 1 moves to the assembly window position of the pump body 4, aligning the three sliders on the same assembly surface with the three corresponding windows on the assembly surface of the pump body. The pneumatic two-finger gripper 1 returns to its initial position. The floating contour diaphragm press head 2 moves to the assembly window position of the pump body 4 and presses the fourth diaphragm. The floating contour diaphragm press head 2 returns to its initial position, the support structure 5 retracts its support, and the floating three-jaw press head 3 releases its grip.

[0055] Step 8: Rotate mechanism 7 90 degrees clockwise, and the floating three-jaw press 3 clamps assembly 4, maintaining pressure for 2 seconds. The floating three-jaw press 3 releases its grip. Rotate mechanism 7 of the floating three-jaw press 3 moves to its initial position. Diaphragm assembly is complete.

[0056] Figure 2 As shown, 10 - middle slider, 11 - diaphragm, 12 - middle eccentric wheel, 13 - side eccentric wheel, 14 - side transmission head, 15 - motor shaft, 16 - middle transmission head

[0057] Specifically,

[0058] Figure 4 This is a structural diagram of a pneumatic two-finger gripper, which mainly includes: a pump body 111, a fixing device 115, a connecting plate 116, a sliding guide rail 117 and a gripper, wherein the first gripper 112 and the second gripper 114 are formed with a groove, the first gripper 112, the second gripper 114 and the support portion 113 are connected to the plate 116, and the plate 116 is fixed to the pump body 111 by the fixing device 115.

[0059] Working methods:

[0060] After starting the work, the first jaw 112 is clamped on the side slider of the first deformation zone 1112, the second jaw 114 is clamped on the side slider of the third deformation zone 1116, and the support part 113 is filled in the middle slider 10 of the second deformation zone 1114. Then the first jaw 112, the second jaw 114 and the support part 113 move to both sides respectively to adjust the position of the slider in the deformation zone, so that the position of the slider at the assembly surface of the pump body is centered.

[0061] Figure 5 、 Figure 6 and Figure 11This is a structural schematic diagram of a floating contoured diaphragm pressure head, which has the following structure: a support portion 211, a contoured diaphragm pressure head 222, and the outer side of the contoured diaphragm pressure head 222 is provided with a convex portion that is the same as the diaphragm, namely a water inlet convex portion 223, a water outlet convex portion 224, a first limiting groove convex portion 225, a second limiting groove convex portion 226, and a third limiting groove convex portion 227. Among them, the first limiting groove convex portion 225, the second limiting groove convex portion 226 and the third limiting groove convex portion 227 are retractable and can move telescopically. During installation, they can automatically compensate for the randomness of the distance from the slider assembly surface to the pump body assembly surface caused by the randomness of the relative position of the eccentric wheels of the components to be assembled, so that there is no need to fix the relative position of the eccentric wheels.

[0062] Working methods:

[0063] The diaphragm 11 is grabbed by the grabbing device 8 and transported to the water hole convex part 223, the water outlet hole convex part 224, the first limiting groove convex part 225, the second limiting groove convex part 226 and the third limiting groove convex part 227 of the floating contoured diaphragm pressure head, which respectively correspond to the water inlet hole 1110, the water outlet hole 1111, the first limiting groove 1112, the second limiting groove 1114 and the third limiting groove 1116 of the diaphragm, and then squeezed into the slider position at the assembly surface of the pump head and pump body.

[0064] Figure 7 The structure of the floating three-jaw press head is as follows: a supporting surface 301, a supporting mechanism 307, a first slider press head 303, a second slider press head 305, a third slider press head 306, a first air hole 302, and a second air hole 304.

[0065] Working method: The first slider pressing head 303, the second slider pressing head 305, and the third slider pressing head 306 can move telescopically, automatically compensating for the randomness of the distance between the slider assembly surface and the pump body assembly surface caused by the randomness of the relative position of the eccentric wheel to be assembled. This allows the slider to be clamped and fixed so that the slider assembly surface is parallel to the pump body assembly surface without fixing the relative position of the eccentric wheel. When the assembly surface after the diaphragm is crimped is rotated to the position of the pressing head, the pressed diaphragm can be re-pressed and maintained, further improving the crimping qualification rate;

[0066] They are used in pairs to form a clamping mechanism, so that the slider assembly surface is fixed to be parallel to the pump body assembly surface, and the structural symmetry center of the slider is fixed and aligned to the symmetry center of the component 7.

[0067] Figure 7 The pump body has the following structure: first water inlet 401, first water outlet 402, second water inlet 403, second water outlet 404, first mounting hole 406, second mounting hole 407, third mounting hole 408, mounting seat 405

[0068] The four sides of the pump body are respectively provided with a mounting hole 406, a second mounting hole 407 and a third mounting hole 408 for mounting the side slider, the middle slider and the side slider respectively. The pump body also includes a mounting seat 405, which is provided at a position opposite to the end cover and is used to fix it to the pump body.

[0069] Figure 9 It is a side slider, and its structure is as follows: sliding surface 903, sliding groove 904, undercut groove 902, limit pin 901

[0070] Figure 10 The middle slider has the following structure: sliding surface 1001, slide groove 1004, undercut groove 1002, limit pin 1001

[0071] Figure 11 The structure of the diaphragm is as follows: water inlet 1110, water outlet 1111, first deformation zone 1112, second deformation zone 1114, third deformation zone 1116, buffer chamber 1115, first inverted buckle group 1117, first limiting groove 1118, second limiting groove 1119, second inverted buckle group 1120, third limiting groove 1122, third inverted buckle group 1121

[0072] Figure 12 This is a schematic diagram of the assembly of the diaphragm, the middle slider, and the side slider. The structure is as follows: the first undercut group 1117 and the third undercut group 1121 of the diaphragm are respectively matched with the two side slider undercut grooves 902. The second undercut group 1120 of the diaphragm is matched with the middle slider undercut groove 1002.

[0073] Figure 13 、 Figure 11 This is a schematic cross-sectional view of the assembly of the diaphragm, middle slider, and side slider. The structure is as follows: the first undercut group 1117 and the third undercut group 1121 of the diaphragm are respectively matched with the two side slider undercut grooves 902. The third undercut group of the diaphragm is matched with the middle slider undercut groove 1002. The limit pins 901 and 1001 are inserted into the pin holes of the diaphragm.

[0074] Figure 14 It is a supporting structure, comprising a connecting piece 503 , a supporting surface 501 , and supporting claws 502 . The supporting claws 502 are arranged at four diagonal corners of the supporting surface 501 .

[0075] The force generated when the floating profiling diaphragm pressure head 2 presses the diaphragm is balanced to prevent the assembly force from bending the rotating shaft at the rotating mechanism 7.

[0076] Figure 15 It is a rotating mechanism, and its structure is a rotating shaft 701, an assembly support surface 702, and a bracket 703.

[0077] Figure 16It is a diaphragm placement mechanism, and its structure includes: a diaphragm placement rack 81, a diaphragm 11, a support panel 82, a rotating device 83 and a grabbing device 84.

[0078] After the diaphragm 11 is grabbed by the grabbing device 84, the rotating device 83 rotates 90 degrees and then transported to the floating profiling diaphragm pressure head.

[0079] The embodiments of the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only intended to help understand the technical solutions and core concepts of the present application. Therefore, changes or modifications made by those skilled in the art based on the concepts of the present application, the specific implementation methods, and the scope of application of the present application, all fall within the scope of protection of the present application. In summary, the contents of this specification should not be construed as limiting the present application.

Claims

1. An assembly structure for a diaphragm of a diaphragm booster pump, characterized in that: The assembly structure includes a pneumatic two-finger clamp, a floating contoured diaphragm pressure head, and a floating three-jaw pressure head. The floating contoured diaphragm pressure head includes a first limit groove convex portion, a second limit groove convex portion, and a third limit groove convex portion that can move telescopically. The floating three-jaw pressure head includes a first slider pressure head, a second slider pressure head, and a third slider pressure head that can move telescopically.

2. The assembly structure according to claim 1, characterized in that: The pneumatic two-finger gripper includes a pump body, a connecting plate, and a gripper. The gripper includes a first gripper, a second gripper, and a supporting portion. The first gripper and the second gripper are formed with a groove. The first gripper, the second gripper, and the supporting portion are connected to the connecting plate. The connecting plate is fixed to the pump body by a fixing device.

3. The assembly structure according to claim 2, characterized in that: The first clamping jaw is clamped on the side slider of the first deformation zone, the second clamping jaw is clamped on the side slider of the third deformation zone, and the supporting portion is filled in the middle slider of the second deformation zone.

4. The assembly structure according to claim 3, characterized in that: The first clamping jaw, the second clamping jaw and the supporting portion are respectively moved to both sides to adjust the positions of the sliders in the first deformation zone and the third deformation zone, so that the position of the slider on the assembly surface of the pump body is centered.

5. The assembly structure according to claim 1, characterized in that: The first limiting groove convex portion, the second limiting groove convex portion and the third limiting groove convex portion on the floating contoured diaphragm pressure head respectively correspond to the first limiting groove, the second limiting groove and the third limiting groove of the diaphragm sheet, and are squeezed into the slider position at the assembly surface of the pump head and pump body.

6. The assembly structure according to claim 1, characterized in that: The floating three-jaw press head allows the slider assembly surface to be fixed to be parallel to the pump body assembly surface, while the structural symmetry center of the slider is fixedly aligned to the symmetry center of the rotating mechanism.

7. The assembly structure according to claim 6, characterized in that: The side surface of the pump body is provided with a mounting hole, a second mounting hole and a third mounting hole, for mounting a side slider, a middle slider and a side slider respectively.

8. The assembly structure according to claim 1, characterized in that: The assembly structure also includes a diaphragm structure, which includes: a water inlet hole, a water outlet hole, a first deformation zone, a second deformation zone, a third deformation zone, a buffer cavity, a first undercut group, a first limiting groove, a second limiting groove, a second undercut group, a third limiting groove, and a third undercut group.

9. The assembly structure according to claim 8, characterized in that: The first undercut group and the third undercut group are respectively matched with the undercut grooves of the two side sliders; the second undercut group is matched with the undercut groove of the middle slider.

10. The assembly structure according to claim 1, characterized in that: The assembly structure further comprises a diaphragm placement mechanism, which comprises a diaphragm placement frame, a diaphragm, a support panel, a rotating device and a gripping device.

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