A pneumatic indexing plate and pneumatic indexing plate flat-nose pliers

Abstract

The purpose of the present invention is to provide a pneumatic indexing plate with stable transmission, good locking effect and wide application range. A linear drive mechanism is installed on the indexing plate mounting frame, and the linear drive mechanism drives the cylinder rod. A plurality of ratchets are formed on the upper surface of the cylinder rod, and the cylinder rod drives the ratchet mechanism to rotate through the ratchets. When the cylinder rod moves in the forward direction, the ratchet is pushed upward to ensure that the ratchet frame does not rotate. It can only rotate in the reverse direction, so the cylinder rod cannot drive the ratchet mechanism to rotate. When the cylinder rod moves in the reverse direction, the cylinder rod can drive the ratchet mechanism to rotate through the ratchet, and the ratchet mechanism rotates and synchronously drives the rotating disk to rotate. The rotating disk rotates once an angle in a round trip, forming a new indexing positioning adjustment method. With this adjustment method, the operator can freely select different indexes by controlling the cylinder to drive the cylinder rod for repeated superposition, and the characteristics of the ratchet are used in the superposition process.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a dividing plate. Background Art

[0002] The existing pneumatic indexing plate is a machine tool accessory that clamps the workpiece on the chuck or between two centers and rotates, indexes and positions the workpiece. It can be divided into pneumatic indexing plates and electric indexing plates according to the power type. When the pneumatic indexing plate is locked by the locking device, it often shakes or even falls off the hook due to insufficient locking force, resulting in it failing to achieve the desired cutting force, having no rigidity, and having a small scope of application, thus affecting normal processing. Summary of the invention

[0003] The purpose of the present invention is to provide a pneumatic indexing plate with stable transmission, good locking effect and wide application range.

[0004] The objective of the present invention is achieved as follows: a pneumatic indexing plate comprises a indexing plate mounting frame, a rotating plate is rotatably arranged on the indexing plate mounting frame, a rotating plate locking mechanism is arranged in the indexing plate mounting frame, a driving mechanism for driving the rotating plate to rotate is arranged in the indexing plate mounting frame, the driving mechanism comprises a ratchet mechanism fixedly arranged on the rotating plate and a cylinder for driving the ratchet mechanism to rotate, a movable cylinder rod is arranged at the front end of the cylinder, a pawl adapted to the ratchet mechanism is arranged on the cylinder rod, when the cylinder rod moves in the forward direction, the cylinder rod cannot drive the ratchet mechanism to rotate, when the cylinder rod moves in the reverse direction, the cylinder rod will drive the ratchet mechanism to rotate through the pawl, the ratchet mechanism rotates and synchronously drives the rotating plate to rotate.

[0005] Preferably, the rotating disk locking mechanism includes a locking disk fixedly arranged on the rotating disk, a plurality of locking grooves are provided on the locking disk, and a movable locking member is provided on the dividing disk mounting frame. When the locking member is stuck in any locking groove, the locking disk cannot rotate, thereby limiting the rotation of the rotating disk.

[0006] Preferably, a transmission structure for driving the locking member to move is also provided in the dividing plate mounting frame, and the transmission structure includes a transmission member, one end of which is movably connected to the locking member, and the other end is provided with a transmission part, and the cylinder rod is provided with a step surface meshing with the tooth mouth, and when the step surface meshes with the tooth mouth, the cylinder rod can drive the locking member to move.

[0007] Preferably, the ratchet mechanism includes a ratchet frame, on which a plurality of ratchets are arranged, and the ratchets are movably arranged on the ratchet frame through a pin shaft, and an elastic member is arranged below the front end of the ratchet teeth. The pawl pushes the back of the ratchet teeth in a forward direction, and the front end of the ratchet teeth can rotate and press downward around the pin shaft, and the pawl pushes the front end of the ratchet teeth in a reverse direction, and the step surface of the pawl contacts the step surface of the front end of the ratchet teeth, and the pawl will push the ratchet mechanism to rotate as a whole.

[0008] Preferably, the rotating disk includes a disk body and a rotating shaft, the rotating shaft is arranged in a dividing disk mounting frame through a bearing, and the locking disk is fixedly sleeved on the rotating shaft.

[0009] Preferably, twelve ratchet teeth are evenly arranged on the ratchet mechanism, the length of the pawl is adapted to the ratchet teeth, the pawl drives the ratchet mechanism to rotate a sawtooth distance, and the ratchet mechanism rotates 30 degrees.

[0010] Preferably, the locking disk is provided with locking grooves having the same number as the ratchet teeth of the ratchet mechanism.

[0011] Preferably, at least three limiting holes are formed at the front end of the cylinder rod, limiting pins can be arranged in the limiting holes, and the spacing between adjacent limiting holes is the same as the spacing between adjacent pawls.

[0012] Preferably, a pneumatic indexing plate flat-nose pliers comprises a flat-nose pliers body, a slide rail is provided on the flat-nose pliers body, a main slider and a sub-slider are arranged on the slide rail, a pneumatic indexing plate is arranged on the main slider, a sub-indexing plate corresponding to the pneumatic indexing plate is arranged on the sub-slider, a transmission mechanism connected with the main slider and the sub-slider is arranged on the flat-nose pliers body, the transmission mechanism comprises a driving screw and a transmission screw, the driving screw is adapted to the transmission screw and can drive the transmission screw to rotate, threaded sleeves are formed on the main slider and the sub-slider, the main slider and the sub-slider are connected to the transmission screw via the threaded sleeve, and when the transmission screw rotates, the main slider and the sub-slider can move in opposite directions at the same time.

[0013] Preferably, the flat-nose pliers body is provided with a rotating wheel for driving the driving screw to rotate, the interior of the rotating wheel is connected with a rotating wheel gear, the rotating wheel gear is meshed with the screw gear at the end of the driving screw, and the rotating wheel can drive the driving screw to rotate through the rotating wheel gear;

[0014] Preferably, the screw gear is provided with a plurality of buffer grooves for inserting buffer members, and the buffer grooves are provided with buffer members, which include a disc and a plurality of buffer strips arranged on the disc, and the end of the driving screw is provided with a limiting groove matched with the size of the buffer strip, and the size of the buffer groove is matched with the end of the driving screw, the screw gear is sleeved on the end of the driving screw, and the buffer member is fixed in the buffer groove by being inserted in the limiting groove.

[0015] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects: a linear drive mechanism is installed on the indexing disk mounting frame, and the linear drive mechanism drives the cylinder rod, and a plurality of ratchet pawls are formed on the upper surface of the cylinder rod, and the cylinder rod drives the ratchet mechanism to rotate through the ratchet pawl. When the cylinder rod moves in the forward direction, the ratchet pawl is pushed upward to ensure that the ratchet frame does not rotate, and can only rotate in the reverse direction. Therefore, the cylinder rod cannot drive the ratchet mechanism to rotate. When the cylinder rod moves in the reverse direction, the cylinder rod can drive the ratchet mechanism to rotate through the ratchet pawl, and the ratchet mechanism rotates and synchronously drives the rotating disk to rotate. The rotating disk rotates once an angle back and forth, forming a new indexing positioning adjustment method. Using this adjustment method, the operator can freely select different indexes by controlling the cylinder to drive the cylinder rod for repeated superposition, and the characteristics of the ratchet are utilized in the superposition process, and the transmission is also very stable and reliable, which makes the application range of the pneumatic indexing disk wider.

[0016] When the cylinder rod moves forward, the pawl also pushes the back of the ratchet in the forward direction, and the front end of the ratchet can rotate and press down around the pin shaft, and the ratchet frame remains stationary, so the locking plate and the rotating plate remain fixed, and the structure itself is reasonably utilized. The locking plate and the rotating plate will only rotate when they are pushed in the reverse direction, and because the elastic ball simultaneously abuts against the rear end of the previous ratchet and the front end of the next ratchet, each downward pressure is very labor-saving, forming a chain effect, and the ratchet can be automatically reset by the elastic ball after each downward pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is one of the structural schematic diagrams in the embodiment of the utility model.

[0018] Figure 2 This is the second structural diagram in the embodiment of the utility model.

[0019] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.

[0020] Figure 4 It is one of the exploded views in the embodiment of the utility model.

[0021] Figure 5 This is the second exploded view of the embodiment of the present utility model.

[0022] Figure 6 This is the third exploded view of the embodiment of the present utility model.

[0023] Figure 7 It is an exploded view of the locking member and the reset structure in the embodiment of the utility model.

[0024] Figure 8 It is a cross-sectional view in an embodiment of the utility model.

[0025] Fig. 9 It is a cross-sectional view of the pneumatic indexing plate portion in the embodiment of the utility model.

[0026] Fig.10 It is a structural schematic diagram of the side surface of the pneumatic indexing plate in the embodiment of the utility model.

[0027] Fig.11 yes Fig.10 A partial enlarged view of point B in the middle.

[0028] Fig.12 This is a state diagram of the process of driving the transmission member to lock the locking disk in the embodiment of the utility model (before pushing).

[0029] Fig.13 It is a cross-sectional view of the locking member and the reset structure in the embodiment of the utility model.

[0030] Fig.14 This is a state diagram of the process of driving the transmission member to lock the locking disk in the embodiment of the utility model (after pushing).

[0031] Fig.15 yes Fig.14 A partial enlarged view of point C in the middle.

[0032] Fig.16 This is one of the connection diagrams of the cylinder rod, the transmission member and the locking member in the embodiment of the utility model.

[0033] Fig.17 This is the second connection diagram of the cylinder rod, the transmission member and the locking member in the embodiment of the utility model.

[0034] Fig.18 It is a cross-sectional view of the other side of the indexing plate mounting frame in the embodiment of the utility model (brake device part).

[0035] Fig.19 yes Fig.18 A partial enlarged view of point D in the middle.

[0036] Fig. 20 It is a schematic diagram of the cooperation between the brake device and the locking disc in the embodiment of the utility model.

[0037] Fig.21 It is a cross-sectional view of the ratchet mechanism in the embodiment of the utility model.

[0038] Fig. 22 It is a schematic diagram of the connection between the cylinder rod and the ratchet mechanism in the embodiment of the utility model.

[0039] Fig.23 It is one of the exploded views of the flat-nose pliers main body in the embodiment of the utility model.

[0040] Fig.24This is the second exploded view of the flat-nose pliers main body in the embodiment of the utility model.

[0041] Fig.25 It is a schematic diagram of the driving screw transmission structure in the embodiment of the utility model.

[0042] Fig.26 It is an exploded view of the driving screw transmission structure in the embodiment of the utility model.

[0043] Fig. 27 It is a diagram of the separation state of the driving device and the driving screw transmission structure in the embodiment of the utility model.

[0044] Fig.28 It is an exploded view of the driving screw rod and the transmission gear set in the embodiment of the utility model.

[0045] Fig.29 It is a cross-sectional view of a transmission gear set in an embodiment of the utility model.

[0046] Figure numerals: 1-indexing plate mounting frame; 2-rotating plate; 3-ratchet mechanism; 4-cylinder; 5-cylinder rod; 6-ratchet; 7-locking plate; 8-locking groove; 9-locking member; 10-transmission member; 11-transmission part; 12-step surface; 13-ratchet frame; 14-ratchet; 15-elastic member; 16-rotating shaft; 17-limiting hole; 18-limiting pin; 19-flat-nose pliers body; 20-slide rail; 21-main slider; 22-auxiliary slider; 23-driven rotating disk; 233-support seat; 24-driving screw rod; 25-transmission screw rod; 26-threaded sleeve; 27-driving device; 28-rotating gear; 29-screw gear; 30-buffer groove; 31-buffer member; 32-limiting groove; 33-disc; 34-buffer strip; 35-bearing mounting position; 36-guide groove; 37-connecting part; 38-fixed shaft; 39-fixing hole; 40-flat key; 41-rotating part; 42-rotating mouth; 43-resetting part; 44-mounting part; 45-limiting member; 46-elastic pin; 47-guide shaft; 48-through hole; 49-support plate; 91-guide rail; 155-disk body. DETAILED DESCRIPTION

[0047] The specific implementation modes of the present invention are further described in detail below with reference to the accompanying drawings.

[0048] A pneumatic indexing plate comprises an indexing plate mounting frame 1, on which a rotating plate 2 is rotatably arranged, and a rotating plate locking mechanism for limiting the rotation of the rotating plate 2 is arranged in the indexing plate mounting frame 1, and two bearings matching with the rotating plate 2 are arranged on the indexing plate mounting frame 1 so that the rotating plate 2 can be rotatably arranged on the indexing plate mounting frame 1, and a driving mechanism for driving the rotating plate 2 to rotate is arranged in the indexing plate mounting frame 1, and the driving mechanism is a linear driving mechanism, and the driving mechanism comprises a ratchet mechanism 3 fixedly arranged on the rotating plate 2, and a cylinder 4 for driving the ratchet mechanism 3 to rotate and a cylinder rod 5 arranged at the front end of the cylinder 4, and the cylinder 4 drives the cylinder rod 5 to make a linear reciprocating motion, and the upper surface of the cylinder rod 5 is provided with a The ratchet mechanism 3 is adapted to the pawl 6, and when the cylinder rod 5 moves in the forward direction, the pawl 6 is pushed upward to ensure that the ratchet frame 13 does not rotate. It can rotate only in the reverse direction. Therefore, the cylinder rod 5 cannot drive the ratchet mechanism 3 to rotate. When the cylinder rod 5 moves in the reverse direction, the cylinder rod 5 can drive the ratchet mechanism 3 to rotate through the pawl 6. The ratchet mechanism 3 rotates and synchronously drives the rotating disk 2 to rotate. The rotating disk 2 rotates once an angle back and forth, forming a new indexing positioning adjustment method. With this adjustment method, the operator can freely select different indexings by controlling the cylinder 4 to drive the cylinder rod 5 for repeated superposition, and the characteristics of the ratchet are utilized in the superposition process. The transmission is also very stable and reliable, which makes the pneumatic indexing disk have a wider range of applications.

[0049] The ratchet mechanism 3 includes a ratchet frame 13 fixedly arranged on the locking plate 7, the ratchet frame 13 is provided with twelve ratchet teeth 14, and the ratchet pawl 6 is provided with four Figure 10-14 As shown, the ratchet 14 is movably arranged on the ratchet frame 13 through a pin shaft, and an elastic member 15 is arranged below the front end of the ratchet 14, and the elastic member 15 is an elastic sphere. When the cylinder rod 5 moves in the forward direction, the pawl 6 also pushes the back of the ratchet 14 in the forward direction, and the front end of the ratchet 14 can rotate and press down around the pin shaft, and the ratchet frame 13 remains stationary, so the locking plate 7 and the rotating plate 2 are both kept fixed and stationary, and the structure itself is reasonably utilized. The locking plate 7 and the rotating plate 2 will only rotate when they are pushed in the reverse direction, and the ratchet 14 can be automatically reset by the elastic ball after each downward pressure.

[0050] In addition, the elastic sphere abuts against the rear end of the preceding ratchet tooth 14 and the front end of the succeeding ratchet tooth 14 at the same time, and also plays a role of assisting downward pressure.

[0051] When the pawl 6 pushes the front end of the ratchet 14 in the reverse direction, the step surface of the pawl 6 contacts the step surface of the front end of the ratchet 14, and the pawl 6 will push the ratchet mechanism 3 to rotate as a whole. The elastic ball also plays a role in supporting the ratchet 14. The length of the pawl 6 is adapted to the ratchet 14. When the pawl 6 drives the ratchet mechanism 3 to rotate a sawtooth distance, the ratchet mechanism 3 rotates 30 degrees and synchronously drives the rotating disk 2 to rotate 30 degrees. If you need to further superimpose on the basis of 30 degrees, just push it another sawtooth distance.

[0052] The rotating disk 2 includes a disk body 155 and a rotating shaft 16. Two corresponding bearing mounting positions 35 are provided on the left and right sides of the dividing disk mounting frame 1. Two bearings for rotating the rotating disk 2 are installed on the bearing mounting positions 35. The rotating shaft 16 is arranged in the dividing disk mounting frame 1 through the bearings, thereby reducing the friction of the rotating shaft 16 during rotation, playing a role in supporting and improving the rotation efficiency; the locking disk 7 is fixedly sleeved on the rotating shaft 16. In order to prevent the locking disk 7 from rotating, a flat key 40 is provided on the rotating shaft 16. The inner wall of the shaft hole of the locking disk 7 is provided with a key slot adapted to the flat key 40. When the locking disk 7 is fixedly sleeved on the rotating shaft 16, the flat key 40 is inserted into the key slot to ensure the stability of the location.

[0053] The front end of the cylinder rod 5 is provided with three limiting holes 17, and limiting pins 18 or bolts can be set in the limiting holes 17. The spacing between adjacent limiting holes 17 is the same as the spacing between adjacent pawls 6, and a guide groove 36 is provided on the outer side of the indexing plate mounting frame 1, and the limiting pin 18 can abut against the guide groove 36. The limiting pin 18 is inserted into the limiting hole 17 to limit the stroke of the cylinder rod 5; Fig.11 As shown in or 12, the rightmost one is the first limit hole, and the three limit holes are arranged in sequence from right to left. When the limit pin is inserted into the first limit hole 17, it can be adjusted by 90 degrees; when the limit pin is inserted into the second limit hole 17, it can be adjusted by 120 degrees or 60 degrees; when the limit pin is inserted into the third limit hole 17, it can be adjusted by 30 degrees, 60 degrees, 90 degrees or 120 degrees.

[0054] The rotating disk locking mechanism includes a locking disk 7 fixedly arranged on the rotating disk 2, and the locking disk 7 is provided with locking grooves 8 having the same number as the ratchet teeth 14 of the ratchet mechanism, with a total of twelve locking grooves 8. The indexing disk mounting frame 1 is provided with a movable locking member 9. When the locking member 9 is stuck in any locking groove 8, the locking disk 7 is firmly stuck and cannot rotate, thereby limiting the rotation of the rotating disk 2. At this time, workers can perform processing, which greatly improves its stability after locking. By locking the rotating disk 2 through the practical rotating disk locking mechanism, its overall rigidity can be greatly improved. By using the indexing disk mounting frame and the pneumatic indexing disk flat-nose pliers in combination, the cutting force of the workpiece can be greatly improved.

[0055] The indexing plate mounting frame 1 is also provided with a transmission structure for driving the locking member 9 to move, and the transmission structure includes a transmission member 10, one end of which is movably connected to the locking member 9, and the other end is provided with a transmission portion 11. A step surface 12 is concavely formed on the cylinder rod 5, and the transmission portion 11 can abut against the step surface 12. When the transmission portion 11 abuts against the step surface 12, the cylinder rod 5 can drive the locking member 9 to move.

[0056] The locking member 9 is provided with a rotating opening 42, and the upper end of the transmission member 10 is provided with a rotating portion 41 which is adapted to the rotating opening 42 in size. The rotating portion 41 is always in a state of being inserted into the rotating opening 42. When the cylinder rod 5 is pushed over, the step surface 12 of the cylinder rod 5 pushes the transmission portion 11, so that the transmission member 10 rotates. The rotation of the transmission member 10 causes the rotating portion 41 to push the locking member 9 to move.

[0057] The indexing plate mounting frame 1 is provided with a reset structure that cooperates with the locking member 9. The reset structure includes a support plate 49 fixed on the indexing plate mounting frame 1. A reset portion 43 arranged opposite to the locking member 9 extends from the bottom of the support plate 49. An elastic member is provided between the reset portion 43 and the locking member 9. The elastic member is a spring. Due to the setting of the elastic member, the locking member 9 can automatically disengage from the locking groove 8 to complete the reset.

[0058] The locking member 9 is provided with a mounting groove 51 at one end, and the reset portion 43 is provided with a guide rod 52 which is inserted into the mounting groove 51. The bottom of the mounting groove 51 is provided with a guide hole for the guide rod 52 to be inserted. The elastic member is sleeved on the guide rod 52. When the cylinder rod 5 pushes the locking member 9 to move, the elastic force of the elastic member must be overcome until one end of the locking member 9 is inserted into the locking groove 8 to compress its spring. When the work is completed, the cylinder rod 5 only needs to be retracted. At this time, the elastic force of the elastic member can be used to automatically reset the locking member 9, so that the locking disk 7 can be in a movable state. By using the transmission structure and the reset structure in combination, the locking method of the rotating disk locking mechanism is more reasonable and reliable, and the locking efficiency is greatly improved.

[0059] One end of the indexing plate mounting frame 1 is formed with two symmetrically arranged connecting parts 37, a fixed shaft 38 is passed through the transmission member 10, and a fixing hole 39 for inserting the fixed shaft 38 is provided at the lower end of the connecting part 37, and the transmission member 10 is rotatably arranged on the connecting part 37 in the indexing plate mounting frame 1 through a rotating shaft; the upper end of the connecting part 37 is provided with a guide rail 91 for the locking member 9 to pass through, and the guide rail 91 plays a guiding role therein, thereby ensuring the stability of the movement of the locking member 9.

[0060] The locking groove 8 is in the shape of an arc groove, and the end of the locking member 9 is adapted to the size and shape of the locking groove 8. The arc groove shape can play a guiding role, making it easier to insert the locking member 9 into the locking groove 8 and the transmission member 10 rotates more stably.

[0061] like Fig.12 and 13 As shown in the figure, when the operator adjusts the indexing to the required angle, he only needs to push the cylinder rod 5 to the bottom until the locking member 9 is engaged in the locking groove 8 to complete the locking work and prevent shaking during processing; Fig.13 As shown, after the processing is completed, the cylinder 4 drives the cylinder rod 5 to retreat a little, so that the locking piece 9 is disengaged from the locking groove 8. At this time, the locking disk 7 is in a movable state, and the operator can drive the cylinder rod 5 to retreat, and then readjust the indexing angle, and the cycle is repeated.

[0062] A pneumatic indexing plate flat-nose pliers, comprising a flat-nose pliers body 19, a slide rail 20 is provided on the flat-nose pliers body 19, a main slider 21 and a secondary slider 22 are provided on the slide rail 20, a indexing plate mounting frame 1 is fixedly arranged on the main slider 21, a driven rotating disk 23 corresponding to the pneumatic indexing plate is provided on the secondary slider 22, a support seat 233 is fixedly arranged on the secondary slider 22, a bearing used in conjunction with the driven rotating disk 23 is provided on the support seat 233 so that the driven rotating disk 23 can be rotatably arranged on the support seat 233, and the pneumatic indexing plate is driven when it rotates The driven turntable 23 rotates; the flat-nose pliers body 19 is provided with a transmission mechanism connected with the main slider 21 and the auxiliary slider 22, the transmission mechanism includes a driving screw 24 and a transmission screw 25, the driving screw 24 is adapted to the transmission screw 25 and can drive the transmission screw 25 to rotate, the main slider 21 and the auxiliary slider 22 are both formed with a threaded sleeve 26, the main slider 21 and the auxiliary slider 22 are connected with the transmission screw 25 through the threaded sleeve 26, the transmission screw 25 rotates, and the main slider 21 and the auxiliary slider 22 can move inward or outward at the same time.

[0063] The flat-nose pliers body 19 is provided with a driving device 27 for driving the driving screw rod 24 to rotate. The driving device 27 is a driving motor. A rotating gear 28 is connected to the driving shaft of the driving motor. A screw gear 29 is provided at the end of the driving screw rod 24. The screw gear 29 is meshed with the rotating gear 28. When the driving shaft of the driving device 27 is rotated, the driving device 27 can drive the driving screw rod 24 to rotate through the rotating gear 28.

[0064] The screw gear 29 is provided with three buffer grooves 30, and the buffer groove 30 is provided with a buffer member 31 whose size matches that of the buffer groove 30. The buffer member 31 includes a disc 33 and a plurality of buffer strips 34 arranged on the disc 33. The end of the driving screw 24 is provided with a limiting groove 32 whose size matches that of the buffer strip 34. The buffer strip 34 can be just inserted into the limiting groove 32. The size of the buffer groove 30 matches that of the end of the driving screw 24. The screw gear 29 is sleeved on the end of the driving screw 24, and the buffer member 31 is inserted into the limiting groove 32 to pass through the buffer groove 30.

[0065] The width of the buffer groove 30 forms a buffer distance. When the screw gear 29 rotates, the groove wall on one side of the buffer groove 30 can abut against the buffer member 31, thereby reducing the influence of its own rotation inertia, reducing the wear of the screw gear 29, and ensuring the stability of the transmission of the driving screw 24.

[0066] Through the cooperation between the pneumatic indexing plate flat-nose pliers and the pneumatic indexing plate, workers can, according to actual processing needs, rotate the driving shaft of the driving device 27 to make the rotating gear 28 drive the screw gear 29, the screw gear 29 drives the driving screw 24, and the driving screw 24 drives the transmission screw 25 to rotate. The main slider 21 and the auxiliary slider 22 arranged on the transmission screw 25 can move inward or outward at the same time, and the clamping distance between the pneumatic indexing plate and the driven turntable 23 can be freely adjusted.

[0067] By providing a brake device on the dividing plate mounting frame 1 for use with the locking plate 7, the brake device can reduce the inertia of the rotating plate 2. The brake device includes a mounting member 44, which is fixed on the dividing plate mounting frame 1. A limit member 45 that can move up and down is provided above the mounting member 44, and one side of the limit member 45 is always in contact with the locking groove 8.

[0068] The limit member 45 is provided with an elastic pin 46 and a spring sleeved on the elastic pin 46, and guide shafts 47 are provided on both sides of the elastic pin 46. The limit member 45 is provided with three through holes 48, and the guide shafts 47 are provided in the through holes 48 on both sides, which play a role in telescopic orientation; the elastic pin 46 is provided in the middle through hole 48, and the diameter of the middle hole is small at the top and large at the bottom, and the spring is restricted in the hole, so that when the locking disk 7 rotates to push the limit member 45 upward, the limit member 45 can be pulled down by the spring, so that the limit member 45 abuts against the next locking groove 8 for each rotation.

[0069] When the rotating disk 2 that rotates synchronously with the locking disk 7 stops rotating, it still has inertia. At this time, even if the locking disk 7 is rotating, it can be slowly stopped by using its elastic force to press the limit member 45 against the locking groove 8, thereby achieving the purpose of reducing the inertia of the rotating disk 2.

[0070] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A pneumatic indexing plate, characterized in that: The invention comprises a dividing plate mounting frame (1), a rotating plate (2) is rotatably arranged on the dividing plate mounting frame (1), a rotating plate locking mechanism is arranged in the dividing plate mounting frame (1), a driving mechanism for driving the rotating plate (2) to rotate is arranged in the dividing plate mounting frame (1), the driving mechanism comprises a ratchet mechanism (3) fixedly arranged on the rotating plate (2) and a cylinder (4) for driving the ratchet mechanism (3) to rotate, a movable cylinder rod (5) is arranged at the front end of the cylinder (4), a ratchet pawl (6) adapted to the ratchet mechanism (3) is arranged on the cylinder rod (5), when the cylinder rod (5) moves in the forward direction, the cylinder rod (5) cannot drive the ratchet mechanism (3) to rotate, when the cylinder rod (5) moves in the reverse direction, the cylinder rod (5) drives the ratchet mechanism (3) to rotate through the ratchet pawl (6), the ratchet mechanism (3) rotates and synchronously drives the rotating plate (2) to rotate; The ratchet mechanism (3) comprises a ratchet frame (13), a plurality of ratchet teeth (14) are arranged on the ratchet frame (13), the ratchet teeth (14) are movably arranged on the ratchet frame (13) through a pin shaft, an elastic member (15) is arranged below the front end of the ratchet teeth (14), the pawl (6) pushes the back of the ratchet teeth (14) in the forward direction, the front end of the ratchet teeth (14) can rotate and press downward around the pin shaft, the pawl (6) pushes the front end of the ratchet teeth (14) in the reverse direction, the step surface of the pawl (6) contacts the step surface of the front end of the ratchet teeth (14), and the pawl (6) pushes the ratchet mechanism (3) to rotate as a whole; The front end of the cylinder rod (5) is provided with at least three limiting holes (17), and limiting pins (18) can be arranged in the limiting holes (17), and the spacing between adjacent limiting holes (17) is the same as the spacing between adjacent ratchet claws (6); The rotating disk locking mechanism comprises a locking disk (7) fixedly arranged on the rotating disk (2), a plurality of locking grooves (8) being provided on the locking disk (7), and a movable locking member (9) being provided on the indexing disk mounting frame (1). When the locking member (9) is stuck in any locking groove (8), the locking disk (7) cannot rotate, thereby limiting the rotation of the rotating disk (2).

2. A pneumatic indexing plate according to claim 1, characterized in that: The indexing plate mounting frame (1) is also provided with a transmission structure for driving the locking member (9) to move, the transmission structure comprising a transmission member (10), one end of the transmission member (10) being movably connected to the locking member (9), and the other end of the transmission member (10) being provided with a transmission part (11), the cylinder rod (5) being provided with a step surface (12), pushing the cylinder rod (5), and pushing the transmission part (11) through the step surface (12) of the cylinder rod (5), thereby driving the locking member (9) to move.

3. A pneumatic indexing plate according to claim 1 or 2, characterized in that: The indexing disk mounting frame (1) is provided with a reset structure cooperating with the locking member (9), the reset structure comprising a reset portion (43) arranged opposite to the locking member (9), and an elastic member is provided between the reset portion (43) and the locking member (9).

4. A pneumatic indexing plate according to claim 1, characterized in that: The rotating disk (2) comprises a disk body (155) and a rotating shaft (16); the rotating shaft (16) is arranged in a dividing disk mounting frame (1) via a bearing; and the locking disk (7) is fixedly sleeved on the rotating shaft (16).

5. The pneumatic indexing plate according to claim 3, characterized in that: Twelve ratchet teeth (14) are evenly arranged on the ratchet mechanism (3); the length of the ratchet pawl (6) is adapted to the ratchet teeth (14); the ratchet pawl (6) drives the ratchet mechanism (3) to rotate a sawtooth distance; and the ratchet mechanism (3) rotates 30 degrees.

6. A pneumatic indexing plate according to claim 1 or 4, characterized in that: The locking disc (7) is provided with locking grooves (8) having the same number as the ratchet teeth (14) of the ratchet mechanism.

7. A pneumatic indexing plate flat-nose pliers, characterized in that: The invention comprises a flat-nose pliers body (19), a slide rail (20) is provided on the flat-nose pliers body (19), a main slider (21) and a secondary slider (22) are provided on the slide rail (20), a pneumatic indexing plate as claimed in any one of claims 1 to 6 is provided on the main slider (21), a driven rotating plate (23) corresponding to the pneumatic indexing plate is provided on the secondary slider (22), and a transmission mechanism connected to the main slider (21) and the secondary slider (22) is provided on the flat-nose pliers body (19). The transmission mechanism comprises a driving screw (24) and a transmission screw (25). The driving screw (24) is adapted to the transmission screw (25) and can drive the transmission screw (25) to rotate. The main slider (21) and the auxiliary slider (22) are both formed with a threaded sleeve (26). The main slider (21) and the auxiliary slider (22) are connected to the driving screw (25) through the threaded sleeve (26). When the transmission screw (25) rotates, the main slider (21) and the auxiliary slider (22) can move inward or outward at the same time.

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