CN103009426A - Multi-degree-of-freedom adjustable cutting device for tire forming machine - Google Patents

Abstract

The invention discloses a multi-degree-of-freedom adjustable cutting device for a tire building machine, which mainly aims at problems such as small adjustable range of cutter angle and poor operability in the tire tread cutting process, so as to improve equipment operability, product production efficiency and cutting Quality designed and invented for purpose. The device is composed of a stand transmission assembly, a lead screw chute assembly, a pressure plate positioning assembly, an adjustment seat assembly, and a clamping seat assembly. The invention can realize the rotation in the directions of three degrees of freedom, and the adjustment of the reciprocating motion in the three linear directions, that is, the effect of three-dimensional adjustment on the knife holder. It satisfies the adjustment requirements of the cutting process on the angle of the cutting knife, improves the safety and operability, and ensures the cutting quality of the rubber incision.

Description

Multi-degree-of-freedom adjustable cutting device for tire building machine

the

technical field

The invention relates to a tire building machine multi-degree-of-freedom adjustable cutting device used in tire production machinery, which belongs to the technical field of rubber machinery manufacturing.

the

Background technique

In the tire production process, the building machine is one of the most critical equipment in the pre-vulcanization section. It is used to bond and roll the semi-finished components of the pre-forming process such as cords, beads, wrappers, treads, sidewalls, etc. tire blank. Its equipment precision and structural level directly affect the performance indicators of all aspects of the tire. As the tire tread is a rubber component that is in direct contact with the ground, it is particularly important to cut and fit it to length. However, the tread cutting device in the traditional sense uses a mechanical cutter to cut, and its knife holder structure is mainly to install the whole knife holder support on the top of the tread feed frame at a certain angle, and use the top wire stopper on the knife holder. The tail is mechanically limited. The cutting knife can only be fine-tuned less than 30° in the left and right direction by adjusting the bolt and the arc groove, and the cutter head drives the synchronous belt wheel pair by the motor (31) to realize left and right cutting. This device has the following disadvantages in actual use: (1) The angle between the cutting knife and the tread can only be adjusted in a small range by adjusting the top screw. The actual position of the adjustment can be clearly seen, so the operability is poor; (2) The cutting knife can only be adjusted left and right, and the front and rear positions cannot be adjusted; (3) The gap between the cutting knife and the cutting surface can only be closed by the jacking wire behind the knife holder. The entire tool holder is adjusted by lifting it up and adding spacers. The adjustment range of this structure is small, which has the disadvantage of a single cutting specification, which cannot meet the cutting of treads with various thickness specifications. In addition, during the adjustment process, the cutter head and The included angle of the cutting surface also changes accordingly, which affects the cutting quality; (4) The whole tool holder structure is relatively clumsy, and the effective stroke that can be realized in the same equipment space is small. Since the whole needs to be installed at a certain angle, the processing and installation It is more complicated and the cost is higher; (5) Due to the less adjustable degree of freedom in the design of the knife holder, the best cutting angle required cannot be achieved when the cutter is adjusted, and accurate fine-tuning cannot be achieved. Maintenance has caused adverse effects; (6) After positioning, due to long-term use and mechanical vibration, the overall angle of the tool holder will change, and the reliability is not high, which directly affects the quality of tread cutting and ultimately affects the quality of tread joints.

the

Contents of the invention

In order to solve the above problems, the present invention combines the multi-degree-of-freedom design concept of the industrial manipulator, adopts a new design scheme, and designs the entire tool rest on an independently detachable stand (1), the motor (31) and the timing belt The wheel set is installed horizontally above the stand (1) to realize the horizontal (X-axis) movement of the cutting knife; the slide plate is driven by the screw to slide in the dovetail groove to realize the adjustment of the front and rear, up and down positions; at the same time, the pressure plate positioning component is used to meet the requirements of the knife holder. Reliability of positioning; in addition, multi-degree-of-freedom rotation adjustment is realized through arc-shaped long slots and fastening bolts. Compared with the original solution, the present invention makes up for the disadvantages of the original solution, such as poor operability, less adjustable orientation, single applicable specification, high cost, and poor reliability, and realizes the function of large-scale, multi-degree-of-freedom, and accurate fine-tuning of the cutter orientation. The processing, installation, inspection, and maintenance of the cutting device save time and cost.

To achieve the above object, the present invention adopts the following technical solutions:

The multi-degree-of-freedom adjustable cutting device of the tire building machine drives the cutter seat to complete the cutting action through the motor-driven synchronous belt wheel pair. It is characterized in that it includes: vertical frame transmission components, 2 sets of screw chute components, and 2 sets of pressure plate positioning Assembly, adjustment seat assembly and clamping seat assembly, the first group of screw slide assembly is installed on the bottom plate (10) on the side of the transmission assembly of the stand, and the bottom plate (10) is connected by the linear guide pair (21) and the stand (1 ) connection, the U-shaped seat (11) connects the bottom plate (10) with the toothed synchronous belt (28), driven by the motor (31), the synchronous belt wheel pair drives the first group of screw chute assembly to reciprocate, Cutting is realized; the first group of screw chute components can be adjusted linearly along the Z-axis direction by rotating the handle I (9), and the positioning is realized by the first group of pressure plate positioning components embedded in the chute I (7); The adjustment seat assembly is fixed on the first group of screw chute assembly to realize the adjustment of the rotation angle around the Y axis; the second group of screw chute assembly is fixed under the adjustment seat assembly to complete the position adjustment of the cutter along the Y axis direction , and at the same time use the second set of pressure plate positioning components embedded in the chute I (7) to achieve positioning; the clamping seat assembly is fixed below the second set of screw chute components, and can rotate around the M axis and N axis respectively , to complete the adjustment of the rotation angle in these two directions, so as to realize the rotation adjustment in the three degrees of freedom directions, and the reciprocating motion adjustment in the three linear directions, that is, to realize the three-dimensional adjustment effect on the tool holder.

The tire building machine multi-degree-of-freedom adjustable cutting device according to claim 1, characterized in that, the stand transmission assembly is composed of a stand (1), a base (13), a motor base (20), a timing belt wheel pair, linear guide rail pair (21) and limit seat (19), the stand (1) adopts the mode of horizontal installation, and the driven wheel (32) on the motor (31), driving wheel (30) and base (13) ) is installed above the stand (1), driven by the motor (31) to realize the reciprocating cutting process. The specific structure is: the driving wheel (30) installed on the top of the stand (1) and the driven wheel (32) on the base (13) form a kinematic pair through a toothed synchronous belt (28), and the base (13) can be driven by a top wire Ⅰ (22) tensioned. The toothed synchronous belt (28) adopts an open structure, and the joint is fixed by a U-shaped seat (11) and a pressing plate (12). This process mainly uses the motor (31) fixed on the motor base (20) to drive the driving wheel (30) to provide driving force for the bottom plate (10) connected to the U-shaped seat (11) to complete its straight line along the X direction. movement process. The base plate (10) that is used to install the whole knife rest assembly is fixed on the side of U-shaped seat (11), and the base plate (10) adopts a pair of parallel linear guide rail pairs (21). The limit seat (19) is used to limit the left and right mechanical positions of the knife rest body.

The tire building machine multi-degree-of-freedom adjustable cutting device according to claim 1, characterized in that, the second set of screw chute assembly is composed of a slide plate II (33), a chute II (4), a handle II (3), the cover plate II (2) and the second set of pressure plate positioning components located inside the second set of screw slide groove components, the slide groove II (4) adopts a dovetail groove structure, and the slide plate II (33) is embedded in the slide groove In the middle, the handle II (3) passes through the cover plate II (2) and is connected with the slide plate II (33), and the slide plate II (33) can be driven to slide in the chute by rotating the handle II (3) to realize linear reciprocating adjustment. The second set of screw slide assembly is installed under the adjustment base (5), the slide slot II (4) is fixed under the adjustment base (5), and the slide plate II (33) is driven by the handle II (3). Complete the forward and backward reciprocating motion along the Y axis direction, and realize the front and rear position adjustment of the tool post. It should be noted that the chute should be installed on the adjustment seat (5) according to the angle required by the actual process.

The multi-degree-of-freedom adjustable cutting device for a tire building machine according to claim 1, characterized in that the structure of the first group of screw runner assemblies is the same as that of the second group of screw runner assemblies, and is formed by the slide plate I (6), chute Ⅰ (7), handle Ⅰ (9), cover plate Ⅰ (8) and the first group of pressure plate positioning components located inside the first group of screw chute components, the difference is that in the design In this method, the reverse thinking method is used to insert the slide plate I (6) into the dovetail groove of the slide groove I (7), the handle I (9) passes through the cover plate I (8) and connects with the slide plate I (6), and the slide plate I (6) (6) Fixed on the base plate (10), drive the chute I (7), the handle I (9), and the cover plate I (8) to slide along the slide plate I (6) by rotating the handle I (9), so as to realize the sliding along the Z Axis (vertical direction) linear movement, during this process, the position of the slide plate I (6) along the Z axis remains unchanged. At the same time, the first group of pressure plate positioning components are embedded in the chute I (7) to achieve reliable positioning.

The tire building machine multi-degree-of-freedom adjustable cutting device according to claim 3, characterized in that, the second group of pressure plate positioning components is composed of a top block (17) and a top wire III (34), and the top block ( 17) The cross-sectional shape adopts a parallelogram structure that matches the cross-section of the chute II (4), and a set of top wire III (34) simultaneously supports the top block (17), so that the top block (17) is extruded through surface contact. Slide plate II (33) is positioned. It should be noted that the structure and function of the pressure plate positioning components of the group I are the same as those of the pressure plate positioning components of the group II. This structure abandons the traditional direct positioning method of the top wire, and uses the pressure plate positioning component to realize positioning, which is easy to adjust, and uses surface contact instead of point contact extrusion. On the one hand, the positioning effect is good, the extrusion force is uniform, and on the other hand, it is not easy to damage the slide. surface, greatly improving the service life.

The tire building machine multi-degree-of-freedom adjustable cutting device according to claim 1, characterized in that, the adjustment seat assembly is composed of an adjustment seat (5) and a set screw III (26), and the adjustment seat (5) There is an arc-shaped long slot, the set screw III (26) passes through the inside of the long slot, and the adjustment seat (5) can rotate around the Y axis to achieve angle adjustment, and at the same time, the positioning can be realized by locking the set screw III (26) . The arc-shaped long slot and the set screw III (26) are used to realize the rotational movement and positioning of the tool holder around the Y-axis direction, and the range of rotation angle can be set for the arc-shaped long slot as required.

The tire building machine multi-degree-of-freedom adjustable cutting device according to claim 1, characterized in that, the clamping seat assembly is composed of a seat (18), a rotating shaft (16), and a clamping part, and the seat (18) Installed on the slide plate II (33), the rotating shaft (16) is installed on the side of the seat (18), and the clamping part is installed on the installation end of the rotating shaft (16).

The multi-degree-of-freedom adjustable cutting device of tire building machine according to claim 7, characterized in that, the clamping part adopts a two-half open structure, and the clamping seat I (14), the clamping seat II (15 ), fine-tuning screw (25), set screw I (23) and set screw II (24), the clamping seat I (14), clamping seat II (15) are connected by the set screw I (23) , and fixed under the rotating shaft (16), there is an arc-shaped long slot on the rotating shaft (16), and the set screw II (24) passes through the inside of the arc-shaped long slot to achieve fastening and positioning. At the same time, the rotating shaft (16) A fine-tuning jackscrew (25) is arranged on the side, and under the action of the fine-tuning jackscrew (25), the clamping part can realize small-angle fine-tuning around the N axis. The clamping part adopts a two-half open structure, which is not only easy to install and disassemble the cutter, but also plays the role of fastening and positioning.

The multi-degree-of-freedom adjustable cutting device of tire building machine according to claim 7, characterized in that an open shaft hole is designed on the seat (18), and the rotating shaft (16) is locked by set screw IV (29). Realize rotation positioning. The structure is easy to adjust and disassemble, reliable in positioning, and has a large range of adjustable angles.

Compared with the prior art, the multi-degree-of-freedom adjustable cutting device of the tire building machine of the present invention has the following advantages:

(1) Due to the design of the multi-degree-of-freedom scheme, the rotation in multiple degrees of freedom directions and the reciprocating motion adjustment in multiple linear directions are realized, which achieves the expected effect of three-dimensional adjustment of the tool holder and effectively compensates for the original It has the disadvantages of single equipment adjustment method and too few adjustable directions for cutting angle.

(2) Since the adjustment of the tool post along the Z-axis and the Y-axis direction respectively adopts the screw chute assembly, the vertical gap between the cutter head and the cutting surface and the front and rear positions of the cutter head along the Y-axis can be bidirectional within a wide range. Adjustment, and can be fine-tuned by the handle, which meets the cutting requirements for treads with various thickness specifications, and effectively makes up for the defects of the original structure with single cutting specifications and the inability to realize front-back and up-down adjustments.

(3) Since the frame body and transmission sub-assemblies are installed horizontally, it is easy to adjust and disassemble, and the preservation performance is good. Therefore, not only the high processing cost is effectively reduced, but also the difficulty of assembly and debugging is reduced.

(4) As the adjustment method adopts the structural scheme of screw chute and top screw fine-tuning, it effectively makes up for the shortcomings of the original structure's fine-tuning operability and poor fine-tuning effect.

(5) In terms of positioning, the present invention uses the pressure plate positioning assembly, and uses the top wire III (34) to withstand the top block (17) at multiple points for surface contact positioning, which has good reliability and long service life, effectively making up for the original design. The displacement of the cutter head due to the vibration of the equipment affects the quality of the cutting of the tread.

Description of drawings

Fig. 1 is the front view of the multi-degree-of-freedom adjustable cutting device of the tire building machine of the present invention;

Fig. 2 The left view of the multi-degree-of-freedom adjustable cutting device of the tire building machine of the present invention;

Fig. 3 partial enlarged view of the present invention;

Fig. 4 G direction view of the present invention;

Fig. 5 is a view from direction P of the present invention.

In the figure: 1 is the vertical frame; 2 is the cover plate II; 3 is the handle II; 4 is the chute II; 5 is the adjustment seat; 6 is the slide plate I; 7 is the chute I; 8 is the cover plate I; 9 is the handle Ⅰ; 10 is the bottom plate; 11 is the U-shaped seat; 12 is the pressure plate; 13 is the base; 14 is the clamping seat I; 15 is the clamping seat II; 16 is the rotating shaft; 17 is the top block; 20 is the motor seat; 21 is the linear guide pair; 22 is the top screw I; 23 is the set screw I; 24 is the set screw II; 25 is the fine-tuning top screw; 26 is the set screw III; 27 is the top Silk II; 28 is a toothed synchronous belt; 29 is a set screw IV; 30 is a driving wheel; 31 is a motor; 32 is a driven wheel; 33 is a slide plate II; 34 is a top wire III.

the

Detailed ways

Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

Please refer to FIG. 1 , which is a front view of the multi-degree-of-freedom adjustable cutting device of the tire building machine of the present invention. It can be seen from the figure that 1 is the vertical frame; 2 is the cover plate II; 3 is the handle II; 4 is the chute II; 5 is the adjustment seat; 6 is the slide plate I; 7 is the chute I; 8 is the cover plate I 9 is a handle I; 10 is a base plate; 11 is a U-shaped seat; 12 is a pressing plate; 30 is a driving wheel; 31 is a motor; 33 is a slide plate II.

Please refer to FIG. 2 , which is a left view of the multi-degree-of-freedom adjustable cutting device of the tire building machine of the present invention. As can be seen from the figure, 13 is the base; 14 is the clamping seat I; 15 is the clamping seat II; 16 is the rotating shaft; 17 is the top block; 18 is the seat; 19 is the limit seat; 20 is the motor seat; 21 22 is top screw Ⅰ; 23 is set screw Ⅰ; 24 is set screw Ⅱ; 25 is fine-tuning top screw; 26 is set screw Ⅲ; 27 is top screw Ⅱ; 28 is toothed synchronous belt ; 29 is the set screw IV; 32 is the driven wheel; 34 is the top wire III.

Please refer to FIG. 3 , which is a partially enlarged view of the present invention. It can be seen from the figure that 3 is the handle II; 5 is the adjustment seat; 14 is the clamping seat I; 15 is the clamping seat II; 16 is the rotating shaft; 17 is the top block; 18 is the seat; 23 is the set screw I 24 is the set screw II; 25 is the fine-tuning top screw; 27 is the top screw II; 29 is the set screw IV; 33 is the slide plate II; 34 is the top screw III.

Please refer to FIG. 4 , which is a G-direction view of the present invention. As can be seen from the figure, 15 is the clamping seat II; 16 is the rotating shaft; 24 is the set screw II; 25 is the fine-tuning jackscrew.

Please refer to FIG. 5 , which is a view from the direction of P in the present invention. As can be seen from the figure, 16 is a rotating shaft; 18 is a seat; 29 is a set screw IV.

Embodiment: This embodiment is that the cutting device is applied in the tread rubber cutting process of the tire building machine. The multi-degree-of-freedom adjustable cutting device of the tire building machine of the present invention consists of a stand (1); a cover plate II (2) ;handle Ⅱ (3); chute Ⅱ (4); adjustment seat (5); slide plate Ⅰ (6); chute Ⅰ (7); U-shaped seat (11); pressure plate (12); base (13); clamping seat I (14); clamping seat II (15); Limiting seat (19); motor seat (20); linear guide rail pair (21); jacking screw I (22); set screw I (23); set screw II (24); fine-tuning jack screw (25); Set screw Ⅲ (26); top screw Ⅱ (27); toothed synchronous belt (28); set screw Ⅳ (29); drive wheel (30); motor (31); driven wheel (32); slide plate Ⅱ (33) and top wire III (34).

In use, first loosen the set screw I (23), and fix the cutter through the clamping seat I (14) and the clamping seat II (15) (the clamping seat I (14), the clamping seat II (15) The inner circle hole is designed and processed according to the outer circle size of the cutter used); as shown in Figure 2 and Figure 4, loosen the set screw II (24) and adjust the fine-tuning top screw (25), so that the clamping seat II ( 15) Slide around the arc-shaped long groove on the rotating shaft (16) to realize the rotation of the cutter head around the N-axis direction. After adjusting it in place, tighten the fastening screw; loosen the fastening screw IV (29) on the seat (18), Make the rotating shaft (16) can rotate flexibly to complete the rotation adjustment of the cutter head around the M axis, and lock the set screw IV (29) after the adjustment is in place; loosen the 6 jacking screws III (34) on the side of the chute II (4) , at the same time, rotate the handle II (3) to realize the linear movement of the tool holder along the Y-axis direction, and after adjusting the position of the cutter head, lock the six jacking screws III (34) to realize the positioning in the Y direction; as shown in Figure 1 and Figure 2 Loosen the two setscrews III (26) connecting the adjustment seat (5) and the chute I (7), at this time, the adjustment seat (5) can rotate a certain angle around the Y-axis direction to find the adjustment position. Tighten the 2 setscrews Ⅲ(26); then, loosen the 6 jacking screws Ⅱ(27) on the side of the chute Ⅰ(7), and at the same time turn the handle Ⅰ(9) on the top of the cover Ⅰ(8), Realize the linear reciprocating motion of the knife holder along the Z-axis direction, so as to meet the adjustment requirements for treads with different thickness specifications, and fasten six jacking screws II (27) after the adjustment is in place. So far, the adjustment process of the whole tool holder has been completed. When the strip material is automatically cut, the motor (31) transmits the torque to the toothed synchronous belt (28) through the driving wheel (30) to meet the left and right cutting movement needs of the cutter, and the tension of the synchronous belt wheel is passed Be positioned at the top wire I (22) on the base (13) and finish. It should be noted that for the adjustment of different parts of the present invention, the order of adjustment can be arranged according to the needs of the site.

This process realizes the multi-degree-of-freedom and multi-directional three-dimensional adjustment of the knife holder, so that the knife head can accurately and efficiently meet the requirements of the cutting process at an optimal angle. Both the operability and the cutting quality of the tread incision have been greatly improved. In addition, the structure can be used not only in other equipment of tire machinery, but also in cutting equipment in other fields.

Claims (9)

1. The multi-degree-of-freedom adjustable cutting device of the tire building machine drives the cutter seat to complete the cutting action through the motor-driven synchronous belt wheel pair. It is characterized in that it includes: vertical frame transmission components, 2 sets of screw slide components, The positioning assembly of the pressure plate, the assembly of the adjustment seat and the assembly of the clamping seat, the first group of screw slide assembly are installed on the bottom plate (10) on the side of the transmission assembly of the stand, and the bottom plate (10) is connected to the stand by the linear guide pair (21) The transmission components are connected, and the U-shaped seat (11) connects the bottom plate (10) with the toothed synchronous belt (28). Driven by the motor (31), the synchronous belt pulley pair drives the first group of screw chute components to reciprocate Movement to achieve cutting; the first group of screw chute assembly can complete the linear adjustment along the Z-axis direction by rotating the handle I (9), and use the first group of pressure plate positioning components embedded in the chute I (7) to achieve Positioning; the adjustment seat assembly is fixed on the first group of screw chute assembly to realize the adjustment of the rotation angle around the Y axis; the second group of screw chute assembly is fixed under the adjustment seat assembly to complete the cutting tool along the Y axis direction. At the same time, the positioning is realized by using the second group of pressure plate positioning components embedded in the chute Ⅰ (7); the clamping seat component is fixed under the second group of screw chute components, which can be rotated around the M axis and N axis respectively. The shaft rotates to complete the adjustment of the rotation angle in these two directions. 2. The tire building machine multi-degree-of-freedom adjustable cutting device according to claim 1, characterized in that, the stand transmission assembly is composed of a stand (1), a base (13), a motor base (20), Composed of synchronous pulley pair, linear guide rail pair (21) and limit seat (19), motor (31), driving wheel (30) and driven wheel (32) on the base (13) are installed above the stand (1) , driven by the motor (31) to realize the reciprocating cutting process. 3. The tire building machine multi-degree-of-freedom adjustable cutting device according to claim 1, characterized in that, the second group of screw chute assembly is composed of slide plate II (33), chute II (4), The handle II (3), the cover plate II (2) and the second set of pressure plate positioning components located inside the second set of screw chute components, the chute II (4) adopts a dovetail groove structure, and the slide plate II (33) is embedded in the In the chute, the handle II (3) passes through the cover plate II (2) to connect with the slide plate II (33), and the handle II (3) can drive the slide plate II (33) to slide in the chute to realize linear reciprocation Adjustment, the second group of pressure plate positioning components are embedded in the chute II (4) to achieve positioning. 4. The tire building machine multi-degree-of-freedom adjustable cutting device according to claim 3, characterized in that, the second set of pressure plate positioning components is composed of a top block (17) and a top wire III (34), and the top The section shape of the block (17) adopts a parallelogram structure that matches the section of the chute II (4), and a set of jacking wires III (34) simultaneously supports the top block (17), so that the top block (17) contacts the top block (17) through the surface. Squeeze the sliding plate II (33) for positioning; in addition, the structure and function of the first group of pressing plate positioning components are the same as those of the second group of pressing plate positioning components. 5. The tire building machine multi-degree-of-freedom adjustable cutting device according to claim 1, characterized in that, the first group of screw chute assembly is composed of slide plate I (6), chute I (7), Handle Ⅰ (9), cover plate Ⅰ (8) and the first group of pressure plate positioning components located inside the first group of screw chute components, the sliding plate Ⅰ (6) is embedded in the dovetail groove of the chute Ⅰ (7), The handle I (9) passes through the cover plate I (8) and connects with the slide plate I (6). The slide plate I (6) is fixed on the bottom plate (10), and the chute I (7), The handle I (9) and the cover plate I (8) slide along the slide plate I (6) to achieve linear reciprocating adjustment, and the first group of pressure plate positioning components are embedded in the chute I (7) to achieve positioning. 6. The tire building machine multi-degree-of-freedom adjustable cutting device according to claim 1, characterized in that the adjustment seat assembly is composed of an adjustment seat (5) and a set screw III (26), and the adjustment seat ( 5) There is an arc-shaped long slot, and the set screw III (26) passes through the inside of the long slot. The adjustment seat (5) can rotate around the Y axis to realize angle adjustment, and at the same time, it can be realized by locking the set screw III (26). position. 7. The tire building machine multi-degree-of-freedom adjustable cutting device according to claim 1, characterized in that, the clamping seat assembly is composed of a seat (18), a rotating shaft (16), and a clamping part, and the seat ( 18) Installed on the slide plate II (33), the rotating shaft (16) is installed on the side of the seat (18), and the clamping part is installed on the installation end of the rotating shaft (16). 8. The multi-degree-of-freedom adjustable cutting device for a tire building machine according to claim 7, characterized in that, the clamping part adopts a two-half open structure, and the clamping seat I (14), clamping seat II (15), fine-tuning jackscrew (25), set screw I (23) and set screw II (24), the clamping seat I (14), clamping seat II (15) pass through the set screw I (23 ) and fixed below the rotating shaft (16), there is an arc-shaped long slot on the rotating shaft (16), and the set screw II (24) passes through the inside of the arc-shaped long slot to achieve fastening and positioning. 16) A fine-tuning jackscrew (25) is arranged on the side, and under the action of the fine-tuning jackscrew (25), the clamping part can realize small-angle fine-tuning around the N-axis. 9. The tire building machine multi-degree-of-freedom adjustable cutting device according to claim 7, characterized in that an open shaft hole is designed on the seat (18), and the rotating shaft is locked by set screw IV (29) ( 16) Realize rotation positioning.

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