Pneumatic rotary graduator

Abstract

The invention discloses a pneumatic rotary graduator, and relates to the technical field of rotators, the pneumatic rotary graduator comprises a first flange, a second flange and a rotating shaft, the first flange and the second flange are arranged at the two ends of the rotating shaft, the end face of the second flange is provided with a rotating disc, and the rotating disc and the rotating shaft synchronously rotate; by rotating the first flange, the rotating disc and the rotating shaft can rotate according to the specified direction, the anticlockwise rotating first flange can slidably connect the second fixing sleeve with the second slopes at different positions, the rotating shaft is rotated by a certain angle, so that the indexing effect is achieved, the second fixing sleeve is prevented from being separated from the second flange, and the machining precision is improved. Meanwhile, the second fixing sleeve is prevented from being separated from the first indexing block, the ratchet wheel can smoothly pass through the pawl when the second fixing sleeve rotates clockwise, the pawl is used for preventing the ratchet wheel from rotating so that the second fixing sleeve can be locked, and the position of the pawl can be adjusted through a limiting bolt so that the second fixing sleeve can rotate anticlockwise.

Description

Technical Field

[0001] The invention relates to the technical field of rotators, in particular to a pneumatic rotary indexer. Background Art

[0002] A pneumatic rotator is an automated device that uses compressed air as a power source to achieve rotational positioning. With the improvement of industrial automation, the demand for precise, efficient and stable rotational positioning devices is growing. As a simple and reliable solution, pneumatic rotators have been widely used. Pneumatic rotators are widely used in various automated equipment, such as assembly lines, inspection lines, handling devices, etc., to achieve precise rotational positioning of workpieces. In the field of mechanical processing, pneumatic rotators can be used to drive linkage devices, conveyors, etc. to achieve high-speed, high-load rotational motion and improve production efficiency. In high-precision industries, pneumatic rotators are used as a precise rotational positioning device in various industries, providing reliable technical support for industrial automation.

[0003] A rotator is often used when a rotating disk needs to be rotated. The rotator needs to ensure its precise rotation angle when rotating. However, the accuracy of the rotating disk when it stops at different positions during one rotation is relatively low. The rotating disk cannot stop at a certain angle, especially when the rotary indexer cannot be used in situations where indexing is required. The use range of the rotating disk is limited. In addition, after the rotating disk rotates in a certain direction, there is a lack of a mechanism to lock the rotating disk when it rotates in the opposite direction. Summary of the invention

[0004] The object of the present invention is to provide a pneumatic rotary indexer to solve the problems proposed in the above-mentioned background technology that the rotating disk has a relatively low stopping accuracy when stopping at different positions during one rotation, the rotating disk cannot stop at a certain angle, especially the rotary indexer cannot be used in situations where indexing is required, the use range of the rotating disk is limited, and there is also a lack of a mechanism to lock the rotating disk when the rotating disk rotates in a certain direction and then rotates in the opposite direction.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A pneumatic rotary indexer comprises a first flange, a second flange and a rotating shaft, wherein the first flange and the second flange are arranged at both ends of the rotating shaft, and a rotating disk is arranged on the end face of the second flange, and the rotating disk rotates synchronously with the rotating shaft, a fixed shell is sleeved between the first flange and the second flange, and a dividing structure is arranged between the end face of the first flange and the end face of the second flange and inside the fixed shell, the dividing structure comprises a first fixed sleeve, the first fixed sleeve is integrally manufactured with the first flange, and a first dividing block is provided on the outside of the cylindrical surface of the first fixed sleeve, and a first inclined surface is provided on the side wall of each first dividing block, a second fixed sleeve is arranged outside the rotating shaft and above the first dividing block, a second fixed sleeve is integrally manufactured with a second dividing block at the lower end, and a second inclined surface is provided on the side wall of each second dividing block, and the position of the first dividing block is matched with the position of the second dividing block.

[0007] As a preferred technical solution of the present invention, the first dividing blocks are arranged in a circular array on the cylindrical surface of the first fixed sleeve, and the second dividing blocks are arranged in a circular array on the cylindrical surface of the second fixed sleeve. The number of first dividing blocks and the number of second dividing blocks are equal. The outer diameter of the cylindrical surface of the first fixed sleeve is matched with the inner diameter of the cylindrical surface of the second fixed sleeve, and the rotation diameter of the first dividing block is matched with the rotation diameter of the second dividing block.

[0008] As a preferred technical solution of the present invention, a reserved groove is provided on the cylindrical surface of the second fixed sleeve, and a sealing ring is provided on the outer sleeve of the second fixed sleeve, the sealing ring fits the interior of the fixed shell, and the interior of the fixed shell is slidably connected to the sealing ring.

[0009] As a preferred technical solution of the present invention, the first inclined surface of the first dividing block is fitted with the second inclined surface of the second dividing block, the first inclined surface is slidably connected to the second inclined surface, the first dividing block and the second dividing block rotate relatively, and the rotation directions of the first dividing block and the second dividing block are opposite, and the interior of the second fixed sleeve is slidably connected to the cylindrical surface of the rotating shaft.

[0010] As a preferred technical solution of the present invention, the vertical side wall of the first dividing block is in contact with the vertical side wall of the second dividing block, and the first dividing block and the second dividing block rotate synchronously, and the rotation directions of the first dividing block and the second dividing block are the same.

[0011] As a preferred technical solution of the present invention, a synchronization structure is arranged inside the second fixed sleeve and between the end face of the second flange, and the synchronization structure includes two first reserved holes, and the two first reserved holes are both opened at the top end of the second fixed sleeve, and a fixed shaft and a second telescopic spring are arranged inside the two first reserved holes, and the fixed shaft is located above the second telescopic spring, and a fixed tip is arranged at the end of the fixed shaft, and two second reserved holes are arranged on the end face of the second flange and close to the second fixed sleeve, a guide groove is arranged inside the second fixed sleeve, and a guide block is arranged in the middle of the rotating shaft and inside the second fixed sleeve, the guide block rotates synchronously with the second fixed sleeve, and the guide block is slidably connected to the inside of the guide groove.

[0012] As a preferred technical solution of the present invention, the total length of the fixed shaft and the fixed tip is greater than the length of the first dividing block, the length of the second telescopic spring in the extended state is greater than the length of the first dividing block, the second reserved holes are arranged in a ring array on the end face of the rotating shaft, and the busbar of the fixed tip is adapted to the busbar of the second reserved holes, and the two fixed tips are matched with two of the second reserved holes.

[0013] As a preferred technical solution of the present invention, a locking structure is arranged between the interior of the fixed shell and the exterior of the second fixed sleeve, the locking structure includes a ratchet, the ratchet is welded to the exterior of the second fixed sleeve, the ratchet rotates synchronously with the second fixed sleeve, a fixing plate is welded to the outer wall of the fixed shell, an arc rod is welded to the side wall of the fixing plate, a first telescopic spring is sleeved on the exterior of the arc rod, a fixing pin is welded to the edge of the fixing plate, and a pawl is sleeved on the exterior of the fixing pin, the pawl engages with the ratchet rotating counterclockwise, and the ratchet and the pawl are used to limit the counterclockwise rotation of the second fixed sleeve.

[0014] As a preferred technical solution of the present invention, a limiting bolt is welded to the side wall of the pawl, the outside of the limiting bolt is screwed with a nut, and the nut is in contact with the outer wall of the fixed shell.

[0015] As a preferred technical solution of the present invention, the outer wall of the second fixed sleeve is provided with a first gear and a second gear at the top and bottom ends of the ratchet, and two mounting plates are welded to the outer wall of the fixed shell, and two groups of corresponding connecting holes are opened on the surfaces of the two mounting plates, and a connecting pin is inserted into one group of connecting holes of the two mounting plates, and a third gear is provided in the middle of the connecting pin, and the third gear is located between the first gear and the second gear, and the third gear is meshed with the first gear or the third gear is meshed with the second gear.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] A dividing structure is provided, and the first flange rotating clockwise can rotate the first dividing block against the second dividing block, thereby rotating the second fixed sleeve and the rotating shaft clockwise, so that rotating the first flange can rotate the rotating disk and the rotating shaft in a specified direction;

[0018] By matching the first inclined surface with the second inclined surface, the first flange rotated counterclockwise can slidably connect the second fixing sleeve with the second inclined surface at different positions, and the rotating shaft is rotated by a certain angle to achieve the indexing effect;

[0019] A synchronization structure is provided, and when the second fixing sleeve rotates relative to the second flange, the second reserved hole can be restricted by the fixing tip, and the fixing tip and the second reserved hole are always matched by the second telescopic spring to prevent the second fixing sleeve from being separated from the second flange, and also prevent the second fixing sleeve from being separated from the first indexing block;

[0020] A locking structure is provided, and when the second fixing sleeve rotates clockwise, the pawl can smoothly pass the ratchet wheel without affecting the normal rotation of the second fixing sleeve. When the second fixing sleeve rotates counterclockwise, the pawl is used to prevent the ratchet wheel from rotating, and the second fixing sleeve can be locked. The position of the pawl can also be adjusted by a limit bolt so that the second fixing sleeve can rotate counterclockwise.

[0021] The third gear is located between the first gear and the second gear. When the second fixed sleeve is lifted and lowered along the axis, the third gear is meshed with the first gear or the second gear. The second gear is located at the highest end and the third gear can be used to rotate the second fixed sleeve and the rotating shaft by a certain angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0023] Figure 1 This is a main structure diagram of a pneumatic rotary indexer of the present invention;

[0024] Figure 2 It is a schematic diagram of the interior of a fixed housing of a pneumatic rotary indexer of the present invention;

[0025] Figure 3 A schematic diagram of the indexing structure of a pneumatic rotary indexer of the present invention;

[0026] Figure 4 It is a schematic diagram of the separation of the second indexing block and the first indexing block of a pneumatic rotary indexer of the present invention;

[0027] Figure 5 It is a schematic diagram of a first indexing block of a pneumatic rotary indexer according to the present invention rotating against a second indexing block;

[0028] Figure 6A schematic diagram of the synchronous structure of a pneumatic rotary indexer of the present invention;

[0029] Figure 7 A schematic diagram of a fixed shaft and a second telescopic spring of a pneumatic rotary indexer of the present invention;

[0030] Figure 8 A schematic diagram of a locking structure of a pneumatic rotary indexer of the present invention;

[0031] Fig. 9 A pneumatic rotary indexer of the present invention Figure 8 Schematic diagram of point A.

[0032] In the figure: 1. first flange; 2. fixed shell; 3. rotating disk; 4. second flange; 5. locking structure; 51. ratchet; 52. first gear; 53. second gear; 54. third gear; 55. mounting plate; 56. connecting pin; 57. connecting hole; 58. fixed plate; 59. arc rod; 510. first telescopic spring; 511. ratchet; 512. limiting bolt; 6. dividing structure; 61. first fixed sleeve; 62. first dividing block; 63. second fixed sleeve; 64. reserved groove; 65. second dividing block; 66. first inclined surface; 67. second inclined surface; 7. synchronous structure; 71. first reserved hole; 72. fixed shaft; 73. second telescopic spring; 74. fixed tip; 75. second reserved hole; 76. guide groove; 77. guide block; 8. rotating shaft; 9. sealing ring. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Embodiment 1:

[0035] See also Figure 1-Figure 3As shown, a pneumatic rotary indexer includes a first flange 1, a second flange 4 and a rotating shaft 8. The first flange 1 and the second flange 4 are arranged at both ends of the rotating shaft 8. A rotating disk 3 is arranged on the end surface of the second flange 4, and the rotating disk 3 is fixed to the rotating shaft 8 through a nut. The rotating disk 3 rotates synchronously with the rotating shaft 8. A fixed shell 2 is sleeved between the first flange 1 and the second flange 4. The fixed shell 2 is installed on the mounting platform, and the rotating disk 3 can be rotated by a certain angle. The first flange 1 is rotated to rotate the indexing structure 6, thereby driving the second flange 4 and the rotating disk 3 to rotate synchronously. A indexing structure 6 is arranged between the end surface of the first flange 1 and the end surface of the second flange 4 and inside the fixed shell 2. The indexing structure 6 includes a first fixed sleeve 61, and the first fixed sleeve 61 is manufactured integrally with the first flange 1. The rotation of the first flange 1 can drive the first fixed sleeve 61 to rotate, and the rotation of the first fixed sleeve 61 is not affected by the fixed shell 2, and a first dividing block 62 is provided on the outside of the cylindrical surface of the first fixed sleeve 61, and each side wall of the first dividing block 62 is provided with a first inclined surface 66. The first fixed sleeve 61 is rotated to adjust the position of the first dividing block 62. A second fixed sleeve 63 is provided on the outside of the rotating shaft 8 and above the first dividing block 62. The lower end of the second fixed sleeve 63 is integrally manufactured with a second dividing block 65, and each side wall of the second dividing block 65 is provided with a second inclined surface 67. The position of the first dividing block 62 is matched with the position of the second dividing block 65. When the position of the second fixed sleeve 63 changes, it will affect the position of the second inclined surface 67 of the second dividing block 65, thereby changing the state of the second fixed sleeve 63.

[0036] See also Figure 3-Figure 5 As shown, the first dividing blocks 62 are arranged in a circular array on the cylindrical surface of the first fixed sleeve 61, and the second dividing blocks 65 are arranged in a circular array on the cylindrical surface of the second fixed sleeve 63. The number of the first dividing blocks 62 and the number of the second dividing blocks 65 are equal. When the relative position of the first flange 1 and the second flange 4 needs to be changed, the position of the second flange 4 can be adjusted by rotating the first flange 1. The outer diameter of the cylindrical surface of the first fixed sleeve 61 is matched with the inner diameter of the cylindrical surface of the second fixed sleeve 63, and the rotation diameter of the first dividing block 62 is matched with the rotation diameter of the second dividing block 65. The rotation of the first fixed sleeve 61 can drive the second fixed sleeve 63 to rotate, and the first dividing block 62 is in contact with the second dividing block 65, so that the rotation angle of the second fixed sleeve 63 can be adjusted.

[0037] See also Figure 3-Figure 5As shown, a reserved groove 64 is provided on the cylindrical surface of the second fixed sleeve 63, and a sealing ring 9 is provided on the outer sleeve of the second fixed sleeve 63. The sealing ring 9 fits the interior of the fixed shell 2, and the interior of the fixed shell 2 is slidably connected to the sealing ring 9. The distance between the first flange 1 and the second flange 4 is constant. When the first fixed sleeve 61 and the second fixed sleeve 63 rotate relative to each other, the second fixed sleeve 63 will also rise and fall, thereby utilizing the sealing ring 9 for sealing.

[0038] See also Figure 3 As shown, the first inclined surface 66 of the first dividing block 62 is fitted with the second inclined surface 67 of the second dividing block 65, and the first inclined surface 66 is slidably connected to the second inclined surface 67. The first dividing block 62 and the second dividing block 65 rotate relative to each other. While the first inclined surface 66 and the second inclined surface 67 rotate relative to each other, the second fixed sleeve 63 can be lifted and lowered in the vertical direction, and the rotation directions of the first dividing block 62 and the second dividing block 65 are opposite. The interior of the second fixed sleeve 63 is slidably connected to the cylindrical surface of the rotating shaft 8. When the first flange 1 rotates in one direction, the first dividing block 62 and the second dividing block 65 can be used to rotate relative to each other, thereby turning the first dividing block 62 and the second dividing block 65 in opposite directions. The rotation angle of the second fixed sleeve 63 can be determined by the amount of sliding of the first dividing block 62 and the second dividing block 65, so that the rotation angle of the rotating disk 3 and the second flange 4 can be indexed.

[0039] See also Figure 5 As shown, the vertical side wall of the first dividing block 62 is fitted with the vertical side wall of the second dividing block 65, and the first dividing block 62 and the second dividing block 65 rotate synchronously, and the rotation direction of the first dividing block 62 and the second dividing block 65 is the same. When the first flange 1 is rotated, the side wall of the first dividing block 62 can drive the side wall of the second dividing block 65 to rotate, so that the first flange 1 and the second flange 4 rotate synchronously, and the second flange 4 and the rotating disk 3 are rotated in a certain direction.

[0040] It should be noted that the fixed housing 2 is installed on the mounting platform, and the first flange 1 and the second flange 4 are located on the upper and lower surfaces of the mounting platform, so that when the first flange 1 is rotated, the first fixed sleeve 61 can be driven to rotate, and when the vertical side wall of the first indexing block 62 is against the vertical side wall of the second indexing block 65, the first flange 1 drives the first indexing block 62 to rotate counterclockwise, and the first indexing block 62 and the first inclined surface 66 can rotate synchronously, so that the first flange 1 and the second flange 4 both rotate counterclockwise; when the first inclined surface 66 of the first indexing block 62 and the second inclined surface 66 of the second indexing block 65 When the first flange 1 is in contact with the first dividing block 65, the first flange 1 drives the first dividing block 62 to rotate counterclockwise, so that the first inclined surface 66 and the second inclined surface 67 slide relative to each other, and the rotation direction of the second flange 4 is opposite to that of the first flange 1, and at the same time, the second fixed sleeve 63 rises and falls along the axial direction, so that after the first flange 1 rotates a certain angle, the first dividing block 62 is disengaged from the second dividing block 65, and the first flange 1 drives the first dividing block 62 to continue to rotate. The second telescopic spring 73 of the synchronous structure 7 can push the second fixed sleeve 63 downward again, and the second dividing block 65 can be rotated a certain angle relative to the first dividing block 62 again.

[0041] See also Figure 2 , Figure 6 and Figure 7 As shown, a synchronization structure 7 is arranged between the interior of the second fixing sleeve 63 and the end surface of the second flange 4, and the synchronization structure 7 includes two first reserved holes 71, and the two first reserved holes 71 are both opened at the top of the second fixing sleeve 63, and the interiors of the two first reserved holes 71 are both provided with a fixed shaft 72 and a second telescopic spring 73, and the fixed shaft 72 is located above the second telescopic spring 73, and the fixed shaft 72 is located in the first reserved hole 71 and is slidably connected, so that the fixed shaft 72 is lifted and lowered along the vertical direction, and a fixed tip 74 is arranged at the end of the fixed shaft 72, and two second reserved holes 75 are arranged on the end surface of the second flange 4 and located near the second fixing sleeve 63, so that the lifting and lowering The fixed tip 74 can always be in contact with the second reserved hole 75, so that the second flange 4 is driven to rotate when the second fixed sleeve 63 rotates. A guide groove 76 is provided inside the second fixed sleeve 63, and a guide block 77 is provided in the middle of the rotating shaft 8 and inside the second fixed sleeve 63. The guide block 77 rotates synchronously with the second fixed sleeve 63, and the guide block 77 is slidably connected with the inside of the guide groove 76. Since the shapes of the guide block 77 and the guide groove 76 are not rotating bodies, the rotation of the second fixed sleeve 63 drives the guide block 77 to rotate, thereby rotating the rotating shaft 8, and the second fixed sleeve 63 can also drive the second flange 4 and the rotating disk 3 to rotate synchronously.

[0042] See also Figure 6 and Figure 7As shown, the total length of the fixed shaft 72 and the fixed tip 74 is greater than the length of the first dividing block 62, the length of the second telescopic spring 73 in the extended state is greater than the length of the first dividing block 62, the second reserved holes 75 are arranged in a ring array on the end face of the rotating shaft 8, and the busbar of the fixed tip 74 is adapted to the busbar of the second reserved holes 75, the two fixed tips 74 are matched with two of the second reserved holes 75, and when the first dividing block 62 of the first dividing block 62 and the second inclined surfaces 67 of the second dividing block 65 slide relative to each other, the second fixed sleeve 63 can be lifted and lowered in the vertical direction, and the fixed shaft 72 moves relative to the first reserved hole 71, and the second fixed sleeve 63 and the second flange 4 rotate together regardless of whether the second fixed sleeve 63 rotates.

[0043] See also Figure 2 and Figure 8 As shown, a locking structure 5 is provided between the interior of the fixed housing 2 and the exterior of the second fixed sleeve 63. The locking structure 5 includes a ratchet 51, which is welded to the exterior of the second fixed sleeve 63. The ratchet 51 rotates synchronously with the second fixed sleeve 63. When the first fixed sleeve 61 drives the second fixed sleeve 63 to rotate, the ratchet 51 rotates along with the second fixed sleeve 63. A fixing plate 58 is welded to the outer wall of the fixed housing 2. An arc rod 59 is welded to the side wall of the fixing plate 58. The arc rod 59 runs through the interior of the ratchet 511. The ratchet 511 is slidably connected relative to the arc rod 59, and the outer sleeve of the arc rod 59 is provided with a first telescopic spring 510, which can push the pawl 511 to move, and a fixing pin is welded on the edge of the fixing plate 58, and a pawl 511 is provided on the outer sleeve of the fixing pin, and the pawl 511 is engaged with the ratchet 51 rotating counterclockwise, and the ratchet 51 and the pawl 511 are used to limit the counterclockwise rotation of the second fixed sleeve 63, and the ratchet 51 and the pawl 511 are engaged when the second fixed sleeve 63 and the ratchet 51 rotate counterclockwise.

[0044] See also Figure 8 and Fig. 9 As shown, the side wall of the pawl 511 is welded with a limiting bolt 512, the outside of the limiting bolt 512 is screwed together with the nut, and the nut contacts the outer wall of the fixed housing 2, and the limiting bolt 512 and the nut are rotated to shorten the distance between the nut and the pawl 511, so that the pawl 511 and the nut become shorter, so that the pawl 511 is separated from the ratchet 51, and does not affect the rotation of the second fixed sleeve 63 and the ratchet 51. The pawl 511 and the nut become longer, and the pawl 511 is engaged with the ratchet 51, preventing the second fixed sleeve 63 from rotating counterclockwise. At this time, the inclined surfaces of the first inclined surface 66 and the second inclined surface 67 make the second fixed sleeve 63 only rise and fall in the vertical direction, and the second fixed sleeve 63 will not rotate. The position of the pawl 511 can also be adjusted by the limiting bolt 512 so that the second fixed sleeve 63 can rotate counterclockwise.

[0045] See also Fig. 9As shown, the outer wall of the second fixing sleeve 63 and the top and bottom ends of the ratchet 51 are both provided with a first gear 52 and a second gear 53, and the first gear 52 and the second gear 53 can be raised and lowered along with the second fixing sleeve 63. Two mounting plates 55 are welded to the outer wall of the fixed housing 2, and two groups of corresponding connecting holes 57 are opened on the surfaces of the two mounting plates 55. A connecting pin 56 is inserted into one group of connecting holes 57 of the two mounting plates 55, and a third gear 54 is provided in the middle of the connecting pin 56. The third gear 54 can be located in one connecting hole 57, and the third gear 54 can be meshed with the first gear 52 or the second gear 53. The third gear 54 can be located in another connecting hole 57, the third gear 54 will not mesh with the first gear 52 and the second gear 53, the third gear 54 is located between the first gear 52 and the second gear 53, the third gear 54 is meshed with the first gear 52 or the third gear 54 is meshed with the second gear 53, the second gear 53 is located at the highest end and the second gear 53 is meshed with the third gear 54, the third gear 54 can be rotated manually or driven by a motor, the ends of the first dividing block 62 and the second dividing block 65 are separated, and the third gear 54 can be used to drive the second gear 53 of the second fixed sleeve 63.

[0046] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A pneumatic rotary indexer, comprising a first flange (1), a second flange (4) and a rotating shaft (8), wherein the first flange (1) and the second flange (4) are arranged at both ends of the rotating shaft (8), a rotating disk (3) is arranged on the end surface of the second flange (4), and the rotating disk (3) rotates synchronously with the rotating shaft (8), and a fixed housing (2) is sleeved between the first flange (1) and the second flange (4), characterized in that: A dividing structure (6) is provided between the end face of the first flange (1) and the end face of the second flange (4) and located inside the fixed housing (2). The dividing structure (6) comprises a first fixed sleeve (61). The first fixed sleeve (61) and the first flange (1) are manufactured in one piece. A first dividing block (62) is provided outside the cylindrical surface of the first fixed sleeve (61), and a first inclined surface (66) is provided on the side wall of each first dividing block (62). A second fixed sleeve (63) is provided outside the rotating shaft (8) and located above the first dividing block (62). A second dividing block (65) is manufactured in one piece at the lower end of the second fixed sleeve (63), and a second inclined surface (67) is provided on the side wall of each second dividing block (65). The position of the first dividing block (62) matches the position of the second dividing block (65).

2. A pneumatic rotary indexer according to claim 1, characterized in that: The first dividing blocks (62) are arranged in an annular array on the cylindrical surface of the first fixed sleeve (61), and the second dividing blocks (65) are arranged in an annular array on the cylindrical surface of the second fixed sleeve (63). The number of the first dividing blocks (62) and the number of the second dividing blocks (65) are equal. The outer diameter of the cylindrical surface of the first fixed sleeve (61) is matched with the inner diameter of the cylindrical surface of the second fixed sleeve (63). The rotation diameter of the first dividing block (62) is matched with the rotation diameter of the second dividing block (65).

3. A pneumatic rotary indexer according to claim 1, characterized in that: The cylindrical surface of the second fixed sleeve (63) is provided with a reserved groove (64), and the outer sleeve of the second fixed sleeve (63) is provided with a sealing ring (9), the sealing ring (9) fits with the interior of the fixed outer shell (2), and the interior of the fixed outer shell (2) is slidably connected to the sealing ring (9).

4. A pneumatic rotary indexer according to claim 3, characterized in that: The first inclined surface (66) of the first dividing block (62) is fitted with the second inclined surface (67) of the second dividing block (65), the first inclined surface (66) and the second inclined surface (67) are slidably connected, the first dividing block (62) and the second dividing block (65) rotate relative to each other, and the rotation directions of the first dividing block (62) and the second dividing block (65) are opposite, and the interior of the second fixed sleeve (63) is slidably connected to the cylindrical surface of the rotating shaft (8).

5. A pneumatic rotary indexer according to claim 4, characterized in that: The vertical side wall of the first indexing block (62) is in contact with the vertical side wall of the second indexing block (65), and the first indexing block (62) and the second indexing block (65) rotate synchronously, and the first indexing block (62) and the second indexing block (65) rotate in the same direction.

6. A pneumatic rotary indexer according to any one of claims 1 to 5, characterized in that: A synchronous structure (7) is arranged between the interior of the second fixing sleeve (63) and the end surface of the second flange (4), the synchronous structure (7) comprising two first reserved holes (71), the two first reserved holes (71) are both opened at the top of the second fixing sleeve (63), a fixed shaft (72) and a second telescopic spring (73) are arranged inside the two first reserved holes (71), the fixed shaft (72) is located above the second telescopic spring (73), a fixed tip (74) is arranged at the end of the fixed shaft (72), two second reserved holes (75) are arranged on the end surface of the second flange (4) and close to the second fixing sleeve (63), a guide groove (76) is arranged inside the second fixing sleeve (63), a guide block (77) is arranged in the middle of the rotating shaft (8) and located inside the second fixing sleeve (63), the guide block (77) rotates synchronously with the second fixing sleeve (63), and the guide block (77) is slidably connected with the inside of the guide groove (76).

7. A pneumatic rotary indexer according to claim 6, characterized in that: The total length of the fixed shaft (72) and the fixed tip (74) is greater than the length of the first dividing block (62), the length of the second telescopic spring (73) in the extended state is greater than the length of the first dividing block (62), the second reserved holes (75) are arranged in a ring array on the end surface of the rotating shaft (8), and the busbar of the fixed tip (74) is adapted to the busbar of the second reserved holes (75), and the two fixed tips (74) are matched with two of the second reserved holes (75).

8. A pneumatic rotary indexer according to claim 7, characterized in that: A locking structure (5) is provided between the interior of the fixed shell (2) and the exterior of the second fixed sleeve (63), the locking structure (5) comprising a ratchet (51), the ratchet (51) being welded to the exterior of the second fixed sleeve (63), the ratchet (51) rotating synchronously with the second fixed sleeve (63), a fixing plate (58) being welded to the outer wall of the fixed shell (2), an arc-shaped rod (59) being welded to the side wall of the fixing plate (58), a first telescopic spring (510) being sleeved on the exterior of the arc-shaped rod (59), a fixing pin being welded to the edge of the fixing plate (58), a ratchet pawl (511) being sleeved on the exterior of the fixing pin, the ratchet pawl (511) being engaged with the ratchet (51) rotating counterclockwise, the ratchet (51) and the ratchet pawl (511) being used to limit the counterclockwise rotation of the second fixed sleeve (63).

9. A pneumatic rotary indexer according to claim 8, characterized in that: A limiting bolt (512) is welded to the side wall of the ratchet (511), the outside of the limiting bolt (512) is screwed into engagement with a nut, and the nut is in contact with the outer wall of the fixed housing (2).

10. A pneumatic rotary indexer according to claim 9, characterized in that: The outer wall of the second fixing sleeve (63) is provided with a first gear (52) and a second gear (53) at the top and bottom ends of the ratchet (51); the outer wall of the fixing housing (2) is welded with two mounting plates (55); the surfaces of the two mounting plates (55) are provided with two groups of corresponding connecting holes (57); a connecting pin (56) is inserted into one group of the connecting holes (57) of the two mounting plates (55); a third gear (54) is provided in the middle of the connecting pin (56); the third gear (54) is located between the first gear (52) and the second gear (53); the third gear (54) is meshed with the first gear (52) or the third gear (54) is meshed with the second gear (53).

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