Automatically-adjusted air bag pressing block structure

Abstract

The utility model discloses and provides an air bag pressing block structure which is simple in structure, on the basis of an equal-height screw and a spring, steel balls are added, original sliding friction is changed into rolling friction, the friction area is reduced, an air bag is added, system resistance is further reduced, the adjusting range is enlarged, and therefore automatic adjustment can be achieved. The device comprises an air bag upper cavity, an air bag lower cavity, a pressing adjusting block and an alignment block, a transmission shaft is arranged in the air bag lower cavity, the transmission shaft is matched in the air bag lower cavity in a limiting and floating mode, the two ends of the transmission shaft are matched with the air bag upper cavity and the pressing adjusting block in a limiting mode respectively, and the pressing adjusting block is arranged in the air bag lower cavity. The downward pressing adjusting block is fixedly matched with the alignment block, and the alignment block is matched with an external pressed assembly in a limiting mode. The device is applied to the field of flatness adjustment of pressing equipment.

Description

Technical Field

[0001] The utility model is applied to the field of flatness adjustment of pressing equipment, and particularly relates to an automatically adjustable air bag pressing block structure. Background Art

[0002] In production, the pressing operation of precision parts often requires extremely high precision and parallelism. Currently, the existing structures for adjusting flatness on the market are mostly structures such as equal-height screws plus springs to ensure flatness and position adjustment functions. This structure has several disadvantages. As the spring force increases, the friction resistance of the internal adjustment mechanism of the pressure plate also increases accordingly, resulting in disadvantages such as a small structural adjustment range, large adjustment resistance and short life. Especially when facing workpieces of different shapes and sizes, the increased friction resistance makes it difficult to ensure that the pressing surfaces are completely parallel, which can easily lead to problems such as uneven pressing and product deformation. Therefore, based on the above problems, if a simple structure can be designed, on the basis of equal-height screws plus springs, steel balls are added to change the original sliding friction into rolling friction, reducing the friction area, and an airbag is added to further reduce the system resistance and increase the adjustment range, thereby realizing an airbag pressure block structure that can realize automatic adjustment, it can solve the above problems well. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an airbag pressing block structure with a simple structure. On the basis of equal height screws and springs, steel balls are added to change the original sliding friction into rolling friction, thereby reducing the friction area. An airbag is added to further reduce the system resistance and increase the adjustment range, thereby realizing automatic adjustment.

[0004] The technical solution adopted by the present invention is as follows: the present invention includes an upper airbag cavity, a lower airbag cavity, a downward pressure adjustment block and an alignment block. A transmission shaft is provided in the lower airbag cavity. The transmission shaft is limited and floatingly fitted in the lower airbag cavity. The two ends of the transmission shaft are respectively limited and fitted with the upper airbag cavity and the downward pressure adjustment block. The downward pressure adjustment block is fixedly fitted with the alignment block. The alignment block is limited and fitted with an external pressed component. It can be seen that the upper airbag cavity and the lower airbag cavity respectively support and limit the transmission shaft. The transmission shaft transfers the force received to the downward pressure adjustment block. The downward pressure adjustment block adjusts the horizontal position of the airbag pressure block structure and indirectly transfers the force to the alignment block. The alignment block is limited and fitted with an external pressed component.

[0005] Furthermore, a trachea joint and a pair of barbs are provided on the upper cavity of the airbag, the trachea joint is fixed on the side of the upper cavity of the airbag, the trachea joint is connected to and cooperated with an external air source, a pair of the barbs are respectively fixed on both sides of the upper cavity of the airbag, a pair of the barbs are respectively cooperated with the upper buckle limiters, and a circular hole that cooperates with the transmission shaft is provided below the upper cavity of the airbag, and the transmission shaft and the hole below the upper cavity of the airbag form a chamber.

[0006] Furthermore, the downward pressure adjustment block is limitedly matched with the lower cavity of the airbag through an equal height screw assembly.

[0007] Furthermore, a plurality of positioning pins are provided at the bottom of the alignment block, and the alignment block is limitedly matched with the external pressed component through the plurality of positioning pins.

[0008] Furthermore, the upper end of the transmission shaft is limited and matched with a limiting block, the upper end of the transmission shaft is limited and matched with the circular hole, a rubber sheet is fixed between the limiting block and the middle part of the transmission shaft, the rubber sheet cooperates with the gas in the chamber, and a third through hole is provided in the horizontal direction of the lower end of the transmission shaft.

[0009] Furthermore, the contour screw assembly includes several first contour screws and several second contour screws, the first contour screw is provided with a ball fixing block, and several first balls are evenly provided in the ball fixing block, the first balls are slidingly engaged with the bottom surface of the downward pressure adjustment block, the second contour screw is provided with a floating spring, one end of the floating spring is limitedly engaged in the second contour screw, the top surface of the second contour screw is provided with a tube column, the tube column is limitedly engaged with the second ball, and the second ball is respectively rolling engaged with the bottom of the lower cavity of the airbag and the floating spring.

[0010] Furthermore, a number of balance springs and limit rods are provided on the lower cavity of the airbag. A first through hole is provided in the vertical direction of the lower cavity of the airbag, and the transmission shaft is floatingly matched with the lower cavity of the airbag through the first through hole. Several balance springs are provided between the lower cavity of the airbag and the transmission shaft. The two ends of the balance spring are respectively limited with the lower cavity of the airbag and the transmission shaft. A second through hole is provided on the side of the lower cavity of the airbag, and the limit rod passes through the third through hole and the second through hole to limit the transmission shaft.

[0011] Furthermore, a third ball is provided in the middle of the limiting rod, and the third ball is in rolling engagement with the transmission shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural view of the utility model;

[0013] Figure 2This is a half-section view of the structure of the utility model

[0014] Figure 3 This is an exploded structural view of the present utility model;

[0015] Figure 4 is a first structural view of the upper cavity of the airbag;

[0016] Figure 5 is a second structural view of the upper cavity of the airbag;

[0017] Figure 6 This is an exploded structural view of the cooperation between the lower cavity of the airbag and the transmission shaft;

[0018] Figure 7 This is a structural view of the cooperation between the transmission shaft, the limit block and the rubber sheet;

[0019] Figure 8 is a structural view of the lower cavity of the airbag;

[0020] Figure 9 is a structural view of the downward pressure adjustment block;

[0021] Figure 10 is a structural sectional view of the downward pressure adjustment block;

[0022] Figure 11 is a structural view of the first contour screw;

[0023] Figure 12 It is a structural view of the alignment block. DETAILED DESCRIPTION

[0024] like Figures 1 to 3 As shown, in this embodiment, the utility model includes an upper airbag cavity 1, a lower airbag cavity 2, a downward pressure adjustment block 3 and an alignment block 4. A transmission shaft 5 is provided in the lower airbag cavity 2. The transmission shaft 5 is limited and floatingly fitted in the lower airbag cavity 2. The two ends of the transmission shaft 5 are respectively limited and fitted with the upper airbag cavity 1 and the lower airbag cavity 2. The lower airbag cavity 2 is fixedly fitted with the alignment block 4. The alignment block 4 is limited and fitted with an external pressed component. It can be seen that the upper airbag cavity 1 and the lower airbag cavity 2 respectively support and limit the transmission shaft 5. The transmission shaft 5 transfers the force it receives to the downward pressure adjustment block 3. The downward pressure adjustment block 3 adjusts the horizontal position movement of the airbag pressing block structure and indirectly transfers the force to the alignment block 4. The alignment block 4 is limited and fitted with an external pressed component.

[0025] like Figure 4 and Figure 5As shown, in this embodiment, a trachea connector 10 and a pair of barbs 11 are provided on the upper cavity 1 of the airbag. The trachea connector 10 is fixed to the side of the upper cavity 1 of the airbag. The trachea connector 10 is connected to an external gas source. The pair of barbs 11 are respectively fixed to both sides of the upper cavity 1 of the airbag. The pair of barbs 11 are respectively matched with the upper buckle limiter. A circular hole 12 is provided below the upper cavity 1 of the airbag to match the transmission shaft 5. The transmission shaft 5 forms a chamber with the hole below the upper cavity 1 of the airbag. It can be seen that the upper cavity 1 of the airbag supports and fixes the trachea connector 10 and the pair of barbs 11. The trachea connector 10 is connected to an external gas source to provide high-pressure gas to the chamber. The barbs 11 are matched with the upper buckle limiter to limit the upper cavity 1 of the airbag to the external equipment.

[0026] like Figure 9 and Figure 10 As shown, in this embodiment, the airbag lower cavity 2 is limitedly engaged with the airbag lower cavity 2 by means of a contour screw assembly. Thus, the contour screw assembly connects the airbag lower cavity 2 and the airbag lower cavity 2. The contour screw assembly ensures the stability of the connection between the airbag lower cavity 2 and the airbag lower cavity 2. At the same time, the screw is low in cost and easy to replace and install.

[0027] like Figure 12 As shown, in this embodiment, the bottom of the alignment block 4 is provided with a plurality of positioning pins 40, and the alignment block 4 is limitedly engaged with the external pressed component through the plurality of positioning pins 40. Thus, the alignment block 4 plays a supporting and fixing role for the positioning pins 40, and the positioning pins 40 play a guiding and limiting role for the alignment block 4 when limitedly engaging with the external pressed component.

[0028] like Figures 6 to 7 As shown, in this embodiment, the upper end of the transmission shaft 5 is limited by a limit block 50, and the upper end of the transmission shaft 5 is limited by the circular hole 12. A rubber sheet 51 is fixed between the limit block 50 and the middle part of the transmission shaft 5. The rubber sheet 51 cooperates with the gas in the chamber. A third through hole 52 is provided in the horizontal direction of the lower end of the transmission shaft 5. It can be seen that the transmission shaft 5 supports and fixes the limit block 50 and the rubber sheet 51. The limit block 50 compresses and limits the rubber sheet 51. The rubber sheet 51 is squeezed downward by the high-pressure gas in the chamber due to the pressure difference. The rubber sheet 51 drives the transmission shaft 5 to move downward. The upper end of the transmission shaft 5 is separated from the limit of the circular hole 12, which facilitates the adjustment of the positioning position. The rubber sheet 51 drives the transmission shaft 5 to move downward.

[0029] like Figures 9 to 11As shown, in this embodiment, the contour screw assembly includes a number of first contour screws 30 and a number of second contour screws 31, and a ball fixing block 32 is provided on the first contour screw 30, and a number of first balls 33 are evenly provided in the ball fixing block 32, and the first balls 33 are slidingly matched with the bottom surface of the downward pressure adjustment block 3, and a floating spring 34 is provided inside the second contour screw 31, and one end of the floating spring 34 is limitedly matched in the second contour screw 31, and a tube column 35 is provided on the top surface of the second contour screw 31, and the tube column 35 is limitedly matched with a second ball 36, and the second ball 36 is rollingly matched with the bottom of the lower cavity 2 of the airbag and the floating spring 34 respectively. It can be seen that the first contour screw 30 supports and limits the ball fixing block 32, and the ball fixing block 32 supports and limits the first balls 33. The first balls 33 roll with the downward pressure adjustment block 3 so that the downward pressure adjustment block 3 can be adjusted in the horizontal direction. The second contour screw 31 supports and limits the column 35 and the floating spring 34. The column 35 and the floating spring 34 both support and limit the second balls 36. The second balls 36 limit the bottom of the airbag lower cavity 2 so that the airbag lower cavity 2 can be adjusted in the horizontal direction. When the second balls 36 contact the airbag lower cavity 2, the floating spring 34 acts as a buffer.

[0030] like Figure 8 As shown, in this embodiment, a number of balance springs 20 and a limit rod 21 are provided on the airbag lower cavity 2, and a first through hole 22 is provided in the vertical direction of the airbag lower cavity 2, and the transmission shaft 5 is floatingly matched with the airbag lower cavity 2 through the first through hole 22, and a number of the balance springs 20 are arranged between the airbag lower cavity 2 and the transmission shaft 5, and the two ends of the balance spring 20 are respectively limited and matched with the airbag lower cavity 2 and the transmission shaft 5, and a second through hole 23 is provided on the side of the airbag lower cavity 2, and the limit rod 21 passes through the third through hole 52 and the second through hole 23 and is limited and matched with the transmission shaft 5. It can be seen that the lower cavity 2 of the airbag supports and limits the balance spring 20 and the limit rod 21, and the balance spring 20 supports and limits the transfer shaft 5, so that the transfer shaft 5 floats and fits in the lower cavity 2 of the airbag. At the same time, when the transfer shaft 5 is squeezed and moves downward, the balance spring 20 buffers the transfer shaft 5. At the same time, when the transfer shaft 5 is not squeezed and moves downward, the balance spring 20 resets the transfer shaft 5. The balance spring 20 pushes the transfer shaft 5 upward to move, and the limit rod 21 limits the transfer shaft 5 when it moves up and down.

[0031] like Figure 7 As shown, in this embodiment, the middle portion of the limiting rod 21 is limitedly engaged with a third ball 24, and the third ball 24 rolls in engagement with the third through-hole 52. Thus, the limiting rod 21 supports and limits the third ball 24. When the transmission shaft 5 moves downward, the middle portion of the transmission shaft 5 rolls in engagement with the third ball 24, reducing the contact area and making it easier to adjust the horizontal position.

[0032] In this embodiment, the working principle of the utility model is as follows:

[0033] like Figures 1 to 12 As shown, the present invention cooperates with the upper snap limit through a pair of the barbs 11, and when the alignment block 4 cooperates with the pressed die group through the positioning pin 40, the balance spring 20, the first ball 33, the second ball 36 and the third ball 24 respectively adjust their positions with the transmission shaft 5, the downward pressure adjustment block 3 and the alignment block 4 under the action of the lateral force of the positioning pin 40. When the entire airbag pressing block continues to be pressed downward, the airbag pressing block continues to be subjected to force, and the entire downward pressure is transmitted to the rubber sheet 51 through the transmission shaft 5. When the upper cavity 1 of the airbag is injected with high-pressure gas through the trachea joint 10, the rubber sheet 51 pushes the transmission shaft 5 downward under the action of the high-pressure gas, so that the downward pressure adjustment block 3 and the alignment block 4 are tightly pressed against the pressed die group. If there is a non-parallelism between the downward pressure adjustment block 3 and the alignment block 4 and the pressed structure, the flatness is adaptively adjusted under the action of the rubber sheet 51 to achieve flatness adjustment.

[0034] Although the embodiments of the present invention are described with practical solutions, they do not limit the meaning of the present invention. For those skilled in the art, it is obvious to modify the implementation scheme and combine it with other solutions based on this description.

Claims

1. An automatically adjustable airbag pressing block structure, characterized in that: It comprises an airbag upper cavity (1), an airbag lower cavity (2), a downward pressure adjustment block (3) and an alignment block (4); a transmission shaft (5) is provided in the airbag lower cavity (2); the transmission shaft (5) is limitedly and floatingly engaged in the airbag lower cavity (2); two ends of the transmission shaft (5) are respectively limitedly engaged with the airbag upper cavity (1) and the downward pressure adjustment block (3); the downward pressure adjustment block (3) is fixedly engaged with the alignment block (4); and the alignment block (4) is limitedly engaged with an external pressed component.

2. The automatically adjustable airbag pressing block structure according to claim 1, characterized in that: The airbag upper cavity (1) is provided with an air pipe joint (10) and a pair of barbs (11), the air pipe joint (10) is fixed to the side of the airbag upper cavity (1), the air pipe joint (10) is connected to the external air source, the pair of barbs (11) are respectively fixed to both sides of the airbag upper cavity (1), and the pair of barbs (11) are respectively matched with the upper buckle limiters, and a circular hole (12) matched with the transmission shaft (5) is provided below the airbag upper cavity (1), and the transmission shaft (5) and the hole below the airbag upper cavity (1) form a chamber.

3. The automatically adjustable airbag pressing block structure according to claim 1, characterized in that: The downward pressure adjustment block (3) is limitedly matched with the airbag lower cavity (2) via an equal height screw assembly.

4. The automatically adjustable airbag pressing block structure according to claim 1, characterized in that: A plurality of positioning pins (40) are provided at the bottom of the alignment block (4), and the alignment block (4) is limitedly matched with the external pressed component through the plurality of positioning pins (40).

5. The automatically adjustable airbag pressing block structure according to claim 2, characterized in that: The upper end of the transmission shaft (5) is limitedly matched with a limiting block (50), the upper end of the transmission shaft (5) is limitedly matched with the circular hole (12), a rubber sheet (51) is fixed between the limiting block (50) and the middle of the transmission shaft (5), the rubber sheet (51) is matched with the gas in the chamber, and a third through hole (52) is provided in the horizontal direction of the lower end of the transmission shaft (5).

6. The automatically adjustable airbag pressing block structure according to claim 3, characterized in that: The contour screw assembly includes a plurality of first contour screws (30) and a plurality of second contour screws (31), wherein a ball fixing block (32) is provided on the first contour screw (30), and a plurality of first balls (33) are evenly provided in the ball fixing block (32), and the first balls (33) are slidably engaged with the bottom surface of the downward pressure adjustment block (3), and a floating spring (34) is provided inside the second contour screw (31), and one end of the floating spring (34) is limitedly engaged in the second contour screw (31), and a tube column (35) is provided on the top surface of the second contour screw (31), and the tube column (35) is limitedly engaged with a second ball (36), and the second ball (36) is rollingly engaged with the bottom of the airbag lower cavity (2) and the floating spring (34) respectively.

7. The automatically adjustable airbag pressing block structure according to claim 5, characterized in that: A plurality of balancing springs (20) and limiting rods (21) are provided on the airbag lower cavity (2), a first through hole (22) is provided in the vertical direction of the airbag lower cavity (2), the transmission shaft (5) is floatingly matched with the airbag lower cavity (2) through the first through hole (22), a plurality of balancing springs (20) are arranged between the airbag lower cavity (2) and the transmission shaft (5), the two ends of the balancing spring (20) are respectively limitedly matched with the airbag lower cavity (2) and the transmission shaft (5), a second through hole (23) is provided on the side of the airbag lower cavity (2), the limiting rod (21) passes through the third through hole (52) and the second through hole (23) and is limitedly matched with the transmission shaft (5).

8. The automatically adjustable airbag pressing block structure according to claim 7, characterized in that: A third ball (24) is provided in a position-limiting manner in the middle of the limiting rod (21), and the third ball (24) rolls in the third through hole (52).

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