Reinforcing self-locking type toggle rod press machine structure for attaching rear cover of mobile phone

Abstract

The invention relates to the field of press machines, in particular to a reinforcement self-locking type toggle rod press machine structure for attaching a rear cover of a mobile phone, and solves the problems that the mobile phone is convenient to take and place and the control is simple. The device comprises a bottom plate, a pressing plate capable of moving in the up-down direction is arranged on the portion, close to the right side, of the upper portion of the bottom plate, a first push plate capable of moving in the left-right direction is arranged on the bottom plate, a second push plate is arranged on the right side of the first push plate, and a self-locking mechanism is arranged between the first push plate and the second push plate. The transmission mechanism is arranged between the self-locking mechanism and the pressing plate; a mobile phone is convenient to take and place, the whole process is achieved only by driving the first push plate, the process is simple, operation is convenient, the transmission mechanism drives the pressing plate to press the mobile phone, the device can be automatically suitable for mobile phones of different thicknesses, the anti-pressure ability of the mobile phone is tested, and use is more flexible.

Description

Technical Field

[0001] This invention relates to the field of press technology, and specifically to a force-increasing self-locking elbow press structure for bonding mobile phone back covers. Background Technology

[0002] An elbow press is a multi-link mechanism that can transmit power through multiple links. It is widely used in assembly, forming, bending, riveting, stamping, printing and other workstations in industries such as machinery, electronics, electrical appliances, small hardware, and plastics.

[0003] Existing elbow presses include a pressure plate. During use, the workpiece needs to be placed under the pressure plate, the pressure plate is driven to press, and then the workpiece is removed. In mass production, such as in the process of bonding mobile phone back covers, multiple phones need to be placed under the pressure plate, pressed, and then removed one by one. Due to the obstruction of the pressure plate above, the process is relatively cumbersome, inefficient, and prone to causing damage to the phones. Another type of press structure has a movable support plate under the pressure plate. During use, the support plate can be moved outside the pressure plate, the workpiece placed on it, and then moved under the pressure plate along with the support plate. After pressing, the support plate and workpiece are moved out together. This solves the problem of inconvenient workpiece handling. However, during control, the movement of the pressure plate and support plate needs to be controlled separately, which still presents some inconvenience.

[0004] Therefore, the present invention provides a force-enhancing self-locking elbow press structure for bonding mobile phone back covers to solve the above problems. Summary of the Invention

[0005] In view of the above situation and to overcome the defects of the prior art, the present invention provides a force-enhancing self-locking elbow press structure for bonding mobile phone back covers. The problem to be solved is: to provide a force-enhancing self-locking elbow press structure for bonding mobile phone back covers that is easy to pick up and put down and is simple to control.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A force-increasing self-locking elbow press structure for bonding mobile phone back covers includes a base plate, a pressure plate that can move in the up and down direction is provided on the upper right side of the base plate, a first push plate that can move in the left and right direction is provided on the base plate, a second push plate is provided on the right side of the first push plate, a self-locking mechanism is provided between the first push plate and the second push plate, and a transmission mechanism is provided between the self-locking mechanism and the pressure plate. During operation, the self-locking mechanism between the first and second push plates is initially locked, with the first and second push plates located to the left of the pressure plate. After the phone's back cover is attached and placed between the first and second push plates, the first push plate is driven to move the phone and the second push plate together to the right. Once the phone is moved under the pressure plate, the self-locking mechanism opens, driving the first push plate to move to the left. Through the transmission mechanism, the pressure plate presses down on the phone. The first push plate is then driven to move to the right again, locking the self-locking mechanism. Finally, the first push plate is driven to move the phone and the second push plate together to the left to reset.

[0007] Preferably, the self-locking mechanism includes a rotating shaft A disposed on the first push plate. The rotating shaft A is damped along the front-back direction. A gear is disposed on the rotating shaft A. A toothed plate is meshed below the gear. The toothed plate is connected to a drive device for controlling the toothed plate to move in the left-right direction. A self-locking plate is connected to the rotating shaft A. A self-locking groove is disposed at the position corresponding to the self-locking plate of the second push plate. A retaining plate is disposed at the opening of the self-locking groove. The retaining plate rotates within a certain range and is provided with a reset device. When the retaining plate is in its natural state, the end of the self-locking plate can enter the self-locking groove from left to right through the rotating plate, but cannot exit from the self-locking groove from right to left through the retaining plate. The mechanism also includes a limiting device for the rightward movement of the second push plate and the leftward movement of the first push plate. During operation, the self-locking plate initially resides within the self-locking groove, achieving a locked state. A drive mechanism then propels the toothed plate, gear, rotating shaft A, and first push plate to move the phone and second push plate to the right until the second push plate reaches its rightmost position, placing the phone below the pressure plate. The toothed plate continues to move to the right, causing the gear and rotating shaft A to rotate against damping, disengaging the self-locking plate from the self-locking groove and unlocking it. The first push plate then moves to the left, and the rotated self-locking plate, via a transmission mechanism, presses the pressure plate against the phone until the first push plate reaches its leftmost position. The toothed plate continues to move to the left, causing the gear and rotating shaft A to reverse and reset against damping. The first push plate is then driven to the right again, allowing the self-locking plate to pass through the locking plate from left to right and enter the self-locking groove. Finally, the first push plate moves the phone and second push plate to the left to reset.

[0008] Preferably, the base plate is provided with a frame, and the frame is provided with a sliding groove in the left and right direction. The second push plate is slidably disposed in the sliding groove, and the second push plate is limited by the right end of the sliding groove. The base plate is provided with a limiting block, and the limiting block is provided with a limiting plate. The first push plate is provided with a vertical plate, and a sliding rod A is provided on the rear side of the vertical plate in the left and right direction and slidably passes through the limiting plate. The first push plate is limited by the limiting block and the limiting plate.

[0009] Preferably, multiple self-locking plates and self-locking grooves are provided, and the end of the self-locking plate is provided with a self-locking head in the shape of a "T".

[0010] Preferably, the driving device is a telescopic cylinder.

[0011] Preferably, the rotating shaft A is provided with a rubber sleeve, which generates damping.

[0012] Preferably, the pressure plate is provided with a return spring A, and the transmission mechanism includes a transmission plate disposed near the left side of the pressure plate and a rotating plate rotatably disposed above the bottom plate. The rotating plate is disposed on the left side of the transmission plate via a rotating shaft B along the front-back direction and is provided with a return spring B. When the self-locking plate is self-locking, it can pass smoothly under the rotating plate. When the self-locking plate rotates to unlock and move, the self-locking plate can contact the rotating plate and push the rotating plate to rotate, so that the rotating plate drives the transmission plate and the pressure plate to move downward.

[0013] Preferably, the transmission plate is inverted "L" shape.

[0014] Preferably, rollers are provided at the upper end of the rotating plate and the left end of the transmission plate.

[0015] Preferably, it also includes a casing.

[0016] The beneficial effects of this invention are as follows: 1. In use, the invention controls the first and second push plates to move together or separately via a self-locking mechanism. When the first and second push plates move to the right together, the phone can be moved under the pressure plate. Then, the first push plate moves to the left separately, disengaging from the pressure plate and allowing the pressure plate to press normally. Subsequently, the first push plate moves to the right and drives the second push plate to move to the left to reset, thus resetting the pressed phone. This facilitates easy handling of the phone. In addition, when moving the phone, the transmission mechanism controls the movement of the pressure plate to press it. The entire process only requires driving the first push plate, making it simple and easy to operate.

[0017] 2. In this invention, the self-locking mechanism drives the pressure plate to press the mobile phone through the transmission mechanism, which can automatically adapt to mobile phones of different thicknesses and test the pressure resistance of the mobile phone, making it more flexible to use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the internal structure of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 Enlarged view of point B in the middle; Figure 4 This is a schematic diagram of the self-locking plate passing through the card plate to the right in this invention; Figure 5 This is a schematic diagram of the self-locking plate driving the card plate to move to the left in this invention; Figure 6This is a schematic diagram of the self-locking plate rotating and disengaging from the second push plate in this invention; Figure 7 This is a schematic diagram of the rotating plate driving the pressure plate downward in this invention; Figure 8 This is a schematic diagram of the external structure of the present invention.

[0019] In the diagram: 1. Base plate, 2. Frame, 3. Slide groove, 4. Rotating shaft B, 5. Return spring B, 6. Rotating plate, 7. Roller, 8. Transmission plate, 9. Slide rod B, 10. Pressure plate, 11. Return spring A, 12. Drive device, 13. Slide rod A, 14. Limiting block, 15. Limiting plate, 16. Vertical plate, 17. Rubber sleeve, 18. Gear, 19. Self-locking plate, 20. Rotating shaft A, 21. First push plate, 22. Toothed plate, 23. Clamping plate, 24. Self-locking head, 25. Self-locking groove, 26. Second push plate, 27. Outer shell. Detailed Implementation

[0020] The following will refer to the attached reference. Figures 1 to 8 The various embodiments of the present invention will be described in detail below. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0021] A force-enhancing self-locking elbow press structure for bonding mobile phone back covers, as shown in the attached figure. Figure 1 As shown, the device includes a base plate 1. A pressure plate 10, movable vertically, is located near the right side of the base plate 1. Specifically, a frame 2 is mounted on the base plate 1, and a vertically slidable slide rod B9 is mounted on the frame 2. The pressure plate 10 is located at the bottom of the slide rod B9. A return spring A11 is provided between the pressure plate 10 and the frame 2. During operation, applying a downward force to the pressure plate 10 causes it to move downwards, pressing down on the workpiece below it. When no external force is applied, the pressure plate 10 returns to its original position under the action of the return spring A11. Additionally, as shown in the attached diagram... Figure 8 As shown, it also includes an outer shell 27, which is detachably connected to the frame 2 and the base plate 1. This shell can protect the internal structure and facilitate maintenance. This part is existing technology and will not be described in detail here.

[0022] As attached Figure 1 , Figure 2 , Figure 3 As shown, the base plate 1 is provided with a first push plate 21 that can move in the left and right direction, and a second push plate 26 is provided on the right side of the first push plate 21. A self-locking mechanism is provided between the first push plate 21 and the second push plate 26, and a transmission mechanism is also provided between the self-locking mechanism and the pressure plate 10.

[0023] Working principle: The connection state between the first push plate 21 and the second push plate 26 is controlled by the opening and closing state of the self-locking mechanism between the first push plate 21 and the second push plate 26. When the self-locking mechanism is in the locked state, the first push plate 21 drives the second push plate 26 to move together. When the self-locking mechanism is in the unlocked state, the second push plate 26 moves independently.

[0024] During operation, the self-locking mechanism between the first push plate 21 and the second push plate 26 is initially locked, with the first push plate 21 and the second push plate 26 located to the left of the pressure plate 10. After the phone back cover is attached, it is placed between the first push plate 21 and the second push plate 26. The first push plate 21 is then driven to move the phone and the second push plate 26 together to the right. Once the phone is moved below the pressure plate 10, the self-locking mechanism opens, and the first push plate 21 and the second push plate 26 are no longer connected. The first push plate 21 is then driven to move to the left, and the open self-locking mechanism drives the transmission mechanism to move, causing the transmission mechanism to move the pressure plate 10 downwards, pressing the phone down. After pressing, the first push plate 21 is driven to move to the right again, locking the self-locking mechanism. At this point, the first push plate 21 and the second push plate 26 are reconnected. Finally, the first push plate 21 is driven to move the phone and the second push plate 26 together to the left to reset.

[0025] When picking up or placing a mobile phone, the phone is not obstructed by the pressure plate 10, making it easy to pick up and place. The entire process only requires driving the first push plate 21, which is simple and easy to operate. In addition, the downward pressure height of the pressure plate 10 can be controlled by the movement position of the first push plate 21, so it can be used for mobile phones of different thicknesses and to test the pressure resistance of the mobile phone, making it more flexible to use.

[0026] As attached Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, in this embodiment, the self-locking mechanism includes a rotating shaft A20 disposed on the first push plate 21. The rotating shaft A20 is damped along the front-back direction. A gear 18 is disposed on the rotating shaft A20. A toothed plate 22 is meshed and connected below the gear 18. The toothed plate 22 is connected to a drive device 12 for controlling the toothed plate 22 to move in the left-right direction. That is, when the toothed plate 22 is driven to move by the drive device 12, it will be damped by the rotating shaft A20 and will first drive the gear 18, the rotating shaft A20 and the first push plate 21 to move together until the first push plate 21 can no longer move. When the toothed plate 22 continues to move, it will drive the gear 18 and the rotating shaft A20 to rotate.

[0027] A self-locking plate 19 is connected to the rotating shaft A20. A self-locking groove 25 is provided at the corresponding position of the second push plate 26 and the self-locking plate 19. A locking plate 23 is provided at the opening of the self-locking groove 25. The locking plate 23 can rotate within a certain range (e.g., 90°) and is provided with a reset device. When the locking plate 23 is in its natural state, it can be referenced in the attached diagram. Figure 4 , Figure 5 The end of the self-locking plate 19 can enter the self-locking groove 25 from left to right through the latch plate 23, but cannot exit from the self-locking groove 25 from right to left through the latch plate 23. It also includes a limiting device for the rightward movement of the second push plate 26 and the leftward movement of the first push plate 21, limiting the maximum distance of the leftward movement of the first push plate 21 and the rightward movement of the second push plate 26.

[0028] Working principle: When the self-locking plate 19 is located in the self-locking groove 25, i.e. in the locked state, and both the first push plate 21 and the second push plate 26 can move freely, the drive tooth plate 22 can drive the first push plate 21 and the second push plate 26 to move together. When the second push plate 26 moves to the rightmost end, the drive tooth plate 22 continues to drive, which drives the self-locking plate 19 to rotate and disengage from the self-locking groove 25, thus unlocking. When the self-locking plate 19 disengages from the self-locking groove 25, i.e. in the unlocked state, the drive tooth plate 22 only drives the first push plate 21 to move. When the first push plate 21 moves to the leftmost end, the drive tooth plate 22 continues to drive, which causes the self-locking plate 19 to rotate to correspond with the self-locking groove 25. When the drive tooth plate 22 moves to the right, the self-locking plate 19 can enter the self-locking groove 25, thus locking.

[0029] During operation, the end of the self-locking plate 19 is initially positioned within the self-locking groove 25, achieving a locked state. The drive device 12 then drives the toothed plate 22, gear 18, rotating shaft A20, and first push plate 21, causing the phone and second push plate 26 to move to the right together. This continues until the second push plate 26 reaches its rightmost position, placing the phone below the pressure plate 10. At this point, the toothed plate 22 continues to move to the right, causing the gear 18 and rotating shaft A20 to rotate against damping, disengaging the end of the self-locking plate 19 from the self-locking groove 25 and unlocking the phone. Furthermore, the height of the end of the self-locking plate 19 is changed, driving the first push plate 21 to move to the left. The rotated self-locking plate 19, through its raised end triggering the transmission mechanism, presses the pressure plate 10 against the phone, maintaining this position for a short period. Pressing is performed, and when the first push plate 21 is driven to move to the left, the pressure plate 10 cannot move downwards, so the first push plate 21 stops moving. The toothed plate 22 continues to move to the left, and the self-locking plate 19 will overcome the damping and reverse to reset to a certain extent. Then the pressure plate 10 resets, and the toothed plate 22 can continue to drive the first push plate 21 to move to the left until the first push plate 21 moves to the leftmost position. At this time, the toothed plate 22 continues to be driven to move to the left, and the toothed plate 22 drives the gear 18 and the rotating shaft A20 to overcome the damping and reverse to a complete reset. The first push plate 21 is driven to move to the right again, so that the self-locking plate 19 enters the self-locking groove 25 from left to right through the locking plate 23. Finally, the first push plate 21 is driven to drive the phone and the second push plate 26 to move to the left to reset.

[0030] Additionally, it should be noted that in this embodiment, the movement of the pressure plate 10 is first driven by the damping of the self-locking plate 19. This can be achieved by setting the damping magnitude. Specifically, the damping device can be a rubber sleeve 17 provided on the rotating shaft A20, through which damping is generated.

[0031] Additionally, it should be noted that when the self-locking plate 19 reverses and resets to a certain extent, the pressure plate 10 exerts a certain pressure on the mobile phone, and this pressure can be used to test the phone's pressure resistance.

[0032] Additionally, it should be noted that when using the device in actual disassembly, a pad can be placed on the side of the second push plate 26 near the first push plate 21. When using the device, the phone can be placed on the pad to reduce friction when moving the phone.

[0033] As attached Figure 1 , Figure 2 As shown, in this embodiment, the frame 2 is provided with a sliding groove 3 along the left and right direction. The second push plate 26 is slidably disposed in the sliding groove 3. The right end of the movement of the second push plate 26 can be directly limited by the right end of the sliding groove 3. The bottom plate 1 is provided with a limiting block 14, and the limiting block 14 is provided with a limiting plate 15. The first push plate 21 is provided with a vertical plate 16. The rear side of the vertical plate 16 is provided with a sliding rod A13 that slides through the limiting plate 15 along the left and right direction. The first push plate 21 is limited by the limiting block 14 and the limiting plate 15, and the movement direction of the first push plate 21 is controlled by the sliding rod A13.

[0034] As attached Figure 1 , Figure 3 , Figure 4 , Figure 5 As shown, in this embodiment, multiple self-locking plates 19 and self-locking slots 25 are provided. The end of the self-locking plate 19 is provided with a "T"-shaped self-locking head 24. By using multiple self-locking plates 19, the area between the first push plate 21 and the second push plate 26 can be divided into several small areas, so that multiple mobile phones can be placed in multiple small areas, avoiding changes in the position of multiple mobile phones, thus making it easier to pick up and put down mobile phones.

[0035] In addition, in this embodiment, the drive device 12 is a telescopic cylinder, and a controller can be provided to precisely control the position of the toothed plate 22.

[0036] As attached Figure 1 , Figure 7As shown, in this embodiment, the pressure plate 10 is provided with a return spring A11. The transmission mechanism includes a transmission plate 8 located near the left side of the pressure plate 10 and a rotating plate 6 located above the base plate 1. The transmission plate 8 is inverted "L" shape. The rotating plate 6 is located on the left side of the transmission plate 8 via a rotating shaft B4 in the front-back direction. The rotating shaft B4 is located on the frame 2 and is provided with a return spring B5. When the self-locking plate 19 is self-locking, it can pass smoothly under the rotating plate 6. When the self-locking plate 19 rotates to unlock and moves, the height of the self-locking plate 19 increases to contact the rotating plate 6 and push the rotating plate 6 to rotate, so that the rotating plate 6 drives the transmission plate 8 and the pressure plate 10 to move downward.

[0037] Furthermore, rollers 7 are provided at the upper end of the rotating plate 6 and the left end of the transmission plate 8, which can reduce the friction when the rotating plate 6 contacts the transmission plate 8.

[0038] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A force-enhancing self-locking elbow press structure for bonding back covers of mobile phones, comprising a base plate (1), wherein a pressure plate (10) capable of moving vertically is provided above the base plate (1) near the right side, characterized in that, The base plate (1) is provided with a first push plate (21) that can move in the left and right direction. A second push plate (26) is provided on the right side of the first push plate (21). A self-locking mechanism is provided between the first push plate (21) and the second push plate (26). The base plate (1) also includes a transmission mechanism provided between the self-locking mechanism and the pressure plate (10). During operation, the self-locking mechanism between the first push plate (21) and the second push plate (26) is in the locked state, and the first push plate (21) and the second push plate (26) are located on the left side of the pressure plate (10). After the back cover of the mobile phone is attached, it is placed between the first push plate (21) and the second push plate (26). The first push plate (21) is driven to move the mobile phone and the second push plate (26) to the right together. After the mobile phone is moved to the bottom of the pressure plate (10), the self-locking mechanism is opened, and the first push plate (21) is driven to move to the left. The pressure plate (10) is driven to press the mobile phone through the transmission mechanism. The first push plate (21) is driven to move to the right again and the self-locking mechanism is locked. Finally, the first push plate (21) is driven to move the mobile phone and the second push plate (26) to the left together to reset.

2. The force-increasing self-locking elbow press structure for bonding mobile phone back covers according to claim 1, characterized in that, The self-locking mechanism includes a rotating shaft A (20) mounted on a first push plate (21). The rotating shaft A (20) is damped along the front-back direction. A gear (18) is mounted on the rotating shaft A (20). A toothed plate (22) is meshed below the gear (18). A drive device (12) for controlling the toothed plate (22) to move in the left-right direction is connected to the rotating shaft A (20). A self-locking plate (19) is connected to the rotating shaft A (20). The second push plate (26) and the self-locking plate (19) are connected to each other. A self-locking groove (25) is provided at the corresponding position. A locking plate (23) is provided at the opening of the self-locking groove (25). The locking plate (23) can rotate within a certain range and is provided with a reset device. When the locking plate (23) is in its natural state, the end of the self-locking plate (19) can enter the self-locking groove (25) from left to right through the locking plate (23) and cannot exit from the self-locking groove (25) from right to left through the locking plate (23). It also includes a limiting device for the second push plate (26) to move to the right and the first push plate (21) to move to the left. During operation, the end of the self-locking plate (19) is initially located within the self-locking groove (25), achieving a locked state. The drive device (12) drives the toothed plate (22), gear (18), rotating shaft A (20), and first push plate (21) to move the mobile phone and second push plate (26) to the right together until the second push plate (26) moves to the far right and the mobile phone is located below the pressure plate (10). At this time, the toothed plate (22) continues to move to the right, and the toothed plate (22) drives the gear 18 and rotating shaft A (20) to rotate against damping, causing the end of the self-locking plate (19) to rotate and disengage from the self-locking groove (25), thus achieving an open state. The lock drives the first push plate (21) to move to the left. The self-locking plate (19) after rotation drives the pressure plate (10) to press the mobile phone through the transmission mechanism until the first push plate (21) moves to the leftmost position. At this time, the toothed plate (22) continues to move to the left. The toothed plate (22) drives the gear 18 and the rotating shaft A (20) to overcome the damping and reverse to reset. The first push plate (21) is driven to move to the right again so that the self-locking plate (19) enters the self-locking groove (25) from left to right through the card plate (23). Finally, the first push plate (21) drives the mobile phone and the second push plate (26) to move to the left to reset.

3. The force-increasing self-locking elbow press structure for bonding mobile phone back covers according to claim 2, characterized in that, The base plate (1) is provided with a frame (2), and the frame (2) is provided with a sliding groove (3) in the left and right direction. The second push plate (26) is slidably disposed in the sliding groove (3). The second push plate (26) is limited by the right end of the sliding groove (3). The base plate (1) is provided with a limiting block (14), and the limiting block (14) is provided with a limiting plate (15). The first push plate (21) is provided with a vertical plate (16), and the rear side of the vertical plate (16) is provided with a sliding rod A (13) that slides through the limiting plate (15) in the left and right direction. The first push plate (21) is limited by the limiting block (14) and the limiting plate (15).

4. The force-increasing self-locking elbow press structure for bonding mobile phone back covers according to claim 2, characterized in that, Multiple self-locking plates (19) and self-locking grooves (25) are provided, and the end of the self-locking plate (19) is provided with a self-locking head (24) in the shape of a "T".

5. The force-increasing self-locking elbow press structure for bonding mobile phone back covers according to claim 2, characterized in that, The drive device (12) is a telescopic cylinder.

6. The force-increasing self-locking elbow press structure for bonding mobile phone back covers according to claim 2, characterized in that, The rotating shaft A (20) is provided with a rubber sleeve (17), which generates damping.

7. The force-enhancing self-locking elbow press structure for bonding mobile phone back covers according to claim 2, characterized in that, The pressure plate (10) is provided with a return spring A (11). The transmission mechanism includes a transmission plate (8) located near the left side of the pressure plate (10) and a rotating plate (6) located above the bottom plate (1). The rotating plate (6) is located on the left side of the transmission plate (8) via a rotating shaft B (4) in the front-back direction and is provided with a return spring B (5). When the self-locking plate (19) is self-locked, it can pass smoothly under the rotating plate (6). When the self-locking plate (19) rotates to unlock and moves, the self-locking plate (19) can contact the rotating plate (6) and push the rotating plate (6) to rotate, so that the rotating plate (6) drives the transmission plate (8) and the pressure plate (10) to move downward.

8. The force-increasing self-locking elbow press structure for bonding mobile phone back covers according to claim 7, characterized in that, The transmission plate (8) is inverted "L" shape.

9. The force-increasing self-locking elbow press structure for bonding mobile phone back covers according to claim 8, characterized in that, Rollers (7) are provided at the upper end of the rotating plate (6) and the left end of the transmission plate (8).

10. A force-increasing self-locking elbow press structure for bonding mobile phone back covers according to any one of claims 1-9, characterized in that, It also includes an outer shell (27).

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