Pneumatic chuck for glass cloth sending mechanism

Abstract

The utility model discloses a pneumatic chuck for a glass cloth sending mechanism, which comprises a clamping jaw assembly, the clamping jaw assembly comprises a fixed seat and a plurality of clamping jaws, each clamping jaw comprises a mounting block and a first clamping jaw which are arranged at an included angle, and the connecting position of the first clamping jaw and the mounting block is of an arc-shaped structure, so that the stress area of a stress point is enlarged, the stress is improved, and the service life of the clamping jaw is prolonged. Therefore, the strength of the clamping jaw is enhanced, the situation of jaw breakage is avoided, the number and frequency of replacing the clamping jaw are reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to copper clad plate manufacturing technical field especially relates to a kind of pneumatic chuck for glass cloth sending mechanism suitable for gluing machine. BACKGROUND

[0002] In the production of copper clad plate, gluing machine is often needed to be used. Gluing machine has sending unit for sending roll material and winding unit for winding. Among them, sending unit is mainly glass cloth sending mechanism. Since the roll diameter of glass cloth is large, and the weight is large, cloth operation mode and the sending quality of glass cloth are influenced by sending mechanism.

[0003] The existing sending unit of gluing machine is divided into two structures of shaftless and shaft. Shaftless sending unit is to clamp the paper tube of glass cloth by pneumatic chuck. But currently, the paper tube of part of glass cloth manufacturers is high-strength plastic paper tube, and pneumatic chuck often has the following problems after running for a period of time:

[0004] I. The stress point of pneumatic chuck is at the L-shaped right angle of clamping jaw, and the clamping jaw cannot release stress when stressed, which leads to frequent fracture of clamping jaw and affects production efficiency.

[0005] II. The paper tube of glass cloth has two kinds of 3 inches and 6 inches, and needs to be frequently switched during production. The clamping jaw of shaftless sending unit also needs to be switched corresponding to the paper tube, which is troublesome for production switching and reduces production efficiency.

[0006] III. Shaftless sending unit easily leads to weft skew of roll tail of glass cloth, which makes the loss of glass cloth too large and increases production cost. According to test and comparison, shaft sending unit can effectively improve the problem of weft skew of roll tail. But the structure of shaft sending unit and shaftless sending unit is too different. It is too large to transform shaftless sending unit into shaft, and the transformation time is long. Moreover, the structure and size of already used shaftless sending unit are fixed, and cannot be changed greatly. Therefore, if shaftless and shaft can be quickly switched on the basis of existing shaftless sending unit, it is also a problem to be solved urgently.

[0007] In summary, it is necessary to provide a pneumatic chuck for glass cloth sending mechanism, which can improve the strength of clamping jaw, reduce the switching of clamping jaw, and realize the quick switching of shaftless and shaft, to solve the above problems. INVENTION CONTENTS

[0008] The utility model aims at providing a pneumatic chuck for glass cloth sending mechanism, which can improve the strength of clamping jaw to avoid broken jaw.

[0009] In order to achieve the above object, the technical scheme of the utility model provides a pneumatic chuck for glass cloth sending mechanism, including pneumatic chuck, the pneumatic chuck includes claw subassembly, the claw subassembly includes fixed seat and a plurality of claws, each the claw is installed in fixed seat around the center of fixed seat even arrangement respectively, wherein, each the claw includes the mounting block and first pawl of the angle setting, the first pawl with the connecting position of mounting block is arc structure.

[0010] Preferably, a plurality of clamping grooves are formed on the fixed seat and extend along the radial direction of the fixed seat, the mounting block of each claw is slidingly installed in the clamping groove and can reciprocate along the radial direction of the fixed seat, the first pawl of each claw is opened or closed through the reciprocating movement of the mounting block, thereby achieving clamping or releasing of the workpiece, and thus the claw subassembly is suitable for shaftless glass cloth sending mechanism.

[0011] Preferably, the outer side of the end of the first pawl away from the mounting block is provided with a first clamping tooth, so that the first pawl can be more stable when clamping the workpiece.

[0012] In a preferred embodiment of the utility model, each claw further includes at least one second pawl, the second pawl is arranged at an angle with the first pawl, and the second pawl is consistent with the protruding direction of the mounting block, and when each mounting block reciprocates, each second pawl and each first pawl are synchronously opened or closed. Through the arrangement of the first pawl and the second pawl, the claw can clamp or release workpieces of different sizes, so that the claw can automatically adapt to clamping or releasing workpieces of at least two sizes without the need to replace the claw, thereby avoiding frequent replacement of the claw during production, thereby improving production efficiency.

[0013] Preferably, the connection position of the second pawl and the first pawl or / and the connection position of the second pawl and the mounting block are arc structures, thereby increasing the stress area of the stress point, improving the stress, thereby enhancing the strength of the claw, avoiding the occurrence of broken claw, and further improving the production efficiency.

[0014] Preferably, the outer side of the second pawl is provided with a second clamping tooth, so that the second pawl can be more stable when clamping the workpiece.

[0015] Preferably, the first pawl and the mounting block, the first pawl and the second pawl are L-shaped structures, and the connection positions of the first pawl and the mounting block, the second pawl and the first pawl, and the second pawl and the mounting block are L-shaped arc structures.

[0016] Preferably, the outer diameter of the first clamping jaw is smaller than the outer diameter of the second clamping jaw, so that the first and second clamping jaws can clamp or release workpieces of different sizes.

[0017] Preferably, the inner side of each mounting block is provided with a tapered pushing surface, which, when subjected to force, causes the mounting block to move radially along the fixing seat.

[0018] Preferably, a through hole is formed in the center of the fixing seat, through which each mounting block can be actuated to move radially along the fixing seat.

[0019] Preferably, each clamping jaw is integrally formed from alloy structural steel or high-strength steel, so that the clamping jaw has high strength and high toughness, and high hardenability, further enhancing the strength of the clamping jaw and avoiding the occurrence of broken jaws, further improving production efficiency.

[0020] Preferably, each clamping jaw is integrally formed from 40CrMo alloy structural steel or 42CrMo high-strength steel.

[0021] In another preferred embodiment of the utility model, the clamping jaw assembly further comprises a clamping piece, the clamping piece is sleeved outside each closed first clamping jaw and detachably connected with the clamping jaw, and the clamping piece is used for connecting the gas expansion shaft. By cooperating with each clamping jaw and the gas expansion shaft through the added clamping piece, the existing shaftless glass cloth sending mechanism can be quickly switched to a shaft type, and other structures of the existing shaftless glass cloth sending mechanism do not need to be modified, the modification investment cost is low, and the modification time is short. Therefore, the shaftless or shaft type structure can be selected according to the working condition, so that the tailing weft skew problem is solved by using the shaft type structure, and the production loss is reduced.

[0022] Preferably, the surface of the clamping piece is provided with a first clamping structure, the inner wall of the gas expansion shaft is provided with a second clamping structure matched with the first clamping structure, and when the clamping piece is inserted into the gas expansion shaft, the first clamping structure and the second clamping structure are clamped to realize fixation, so that the connection between the clamping piece and the gas expansion shaft is simple and fast, the lifting of the operator during roll changing is reduced, and the labor intensity is reduced.

[0023] Preferably, the first clamping structure is an external gear, and the second clamping structure is an internal gear matched with the external gear, so that the clamping and fixation are realized through the cooperation of the external gear and the internal gear, the fixed connection structure of the clamping piece and the gas expansion shaft is simplified, and the connection is more convenient.

[0024] Preferably, the clamping piece is detachably connected to at least one of the first clamping jaw, the second clamping jaw and the mounting block.

[0025] Preferably, the clamping member comprises a fixed part and a connecting shaft protruding from the fixed part, a through hole is formed on the connecting shaft, the connecting shaft is sleeved outside the closed first clamping jaw through the through hole, and the fixed part is detachably connected with at least one of the mounting block and the second clamping jaw, or / and the connecting shaft is detachably connected with the first clamping jaw, and the connecting shaft is used for connecting the inflatable shaft.

[0026] Preferably, the connecting shaft is in a conical structure, and the first clamping structure is arranged on the connecting shaft.

[0027] Preferably, a connecting hole is formed on the fixed part and the mounting block, and a locking member is detachably locked in the connecting hole, so as to lock the clamping member on the mounting block.

[0028] Preferably, a connecting hole is formed on the fixed part and the second clamping jaw, and a locking member is detachably locked in the connecting hole, so as to lock the clamping member on the second clamping jaw.

[0029] Preferably, the connecting shaft is tightly matched with the first clamping jaw or is clamped through the clamping structure, so as to lock the clamping member on the first clamping jaw.

[0030] Compared with the prior art, the glass cloth conveying mechanism pneumatic chuck has the following advantages: each clamping jaw of the clamping jaw assembly comprises an installation block and a first clamping jaw arranged at an angle, and the connection position of the first clamping jaw and the installation block is in an arc structure, so that the stress area of the stress point is increased, the stress is improved, the strength of the clamping jaw is enhanced, the situation of broken clamping jaw is avoided, the frequency of replacing the clamping jaw is reduced, and the production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structure schematic view of the pneumatic chuck in the first embodiment of the utility model.

[0032] Figure 2 is Figure 1 a sectional view.

[0033] Figure 3 is Figure 1 an exploded view.

[0034] Figure 4 is Figure 3 a structure schematic view of another angle of the clamping jaw assembly in the utility model.

[0035] Figure 5 is Figure 4 a structure schematic view of a clamping jaw in the utility model.

[0036] Figure 6 is Figure 5 a side view.

[0037] Figure 7 is the structure schematic view of the pneumatic chuck in the second embodiment of the utility model.

[0038] Figure 8 is Figure 7 the sectional view.

[0039] Figure 9 is Figure 7 the state schematic view of the clamping jaw in the second embodiment of the utility model.

[0040] Figure 10 is Figure 9 the sectional view.

[0041] Figure 11 is Figure 7 the exploded view.

[0042] Figure 12 is Figure 7 the structure schematic view of the clamping jaw in the second embodiment of the utility model.

[0043] Figure 13 is Figure 11 the structure schematic view of the fixed seat in the second embodiment of the utility model.

[0044] Figure 14 is Figure 11 the structure schematic view of the clamping jaw in the second embodiment of the utility model.

[0045] Figure 15 is Figure 14 the side view.

[0046] Figure 16 is the structure schematic view of the pneumatic chuck in the third embodiment of the utility model.

[0047] Figure 17 is Figure 16 the state schematic view of the clamping jaw in the second embodiment of the utility model.

[0048] Figure 18 is Figure 17 the sectional view.

[0049] Figure 19 is the structure schematic view of the pneumatic chuck in the third embodiment of the utility model.

[0050] Figure 20 is Figure 17 the structure schematic view of the pneumatic chuck in the second embodiment of the utility model. DETAILED DESCRIPTION

[0051] The embodiments of the present application will be described below with reference to the accompanying drawings. In the drawings, similar elements are denoted by like reference numbers. It should be noted that the orientation or positional relationship described in the present application, such as up, down, left, right, front, back, etc., is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the technical solutions of the present application or simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The first, second, etc. described is only used to distinguish technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the sequence of technical features indicated.

[0052] Firstly Figures 1-20 The pneumatic chuck for glass cloth sending mechanism provided by the present application is especially suitable for use in a gluing machine and is used for sending glass cloth. The pneumatic chuck for glass cloth sending mechanism can improve the strength of the clamping jaw to avoid or reduce the occurrence of clamping jaw breakage. Further, the pneumatic chuck for glass cloth sending mechanism can adapt to the sending of glass cloth of various paper tube sizes without replacing the clamping jaw. In addition, the pneumatic chuck for glass cloth sending mechanism can realize quick switching between the shaftless structure and the shaft structure.

[0053] Understandably, the pneumatic chuck for glass cloth sending mechanism is not limited to sending glass cloth in a gluing machine, and it is also feasible to use the pneumatic chuck for glass cloth sending mechanism to clamp any workpiece having a paper tube or an inner hole.

[0054] Secondly Figures 1-20 In the present application, the pneumatic chuck for glass cloth sending mechanism 100 comprises a clamping jaw assembly 110, a piston assembly 120, an inner cylinder body 130, and an outer cylinder body 140. In combination Figures 2-3 、 Figures 7-8 The inner cylinder body 130 is installed in the cavity of the outer cylinder body 140, the rear end of the inner cylinder body 130 is provided with a gas guide rod 131, the gas guide rod 131 penetrates through the rear end of the outer cylinder body 140, the inside of the gas guide rod 131 is provided with a gas passage 132 in communication with the outside, and the gas passage 132 is arranged in a conventional manner in the field. The clamping jaw assembly 110 is installed at the front end of the inner cylinder body 130, the piston assembly 120 is arranged in the cavity of the inner cylinder body 130 in an axially sliding manner, and the front end of the piston assembly 120 abuts against the clamping jaw assembly 110. When the gas passage 132 supplies gas into the cavity of the inner cylinder body 130, the piston assembly 120 moves forward to extend and push the clamping jaw assembly 110, so that the clamping jaw assembly 110 opens or closes in the radial direction, thereby realizing clamping or releasing of the paper tube of the glass cloth in a shaftless manner, or the clamping jaw assembly 110 moves in the axial direction as a whole to connect the gas expansion shaft 200, thereby realizing clamping or releasing of the paper tube of the glass cloth in a shafted manner, as will be described in detail later.

[0055] Combining Figures 1-3 、 Figures 7-11 The structure and mounting mode of the inner cylinder body 130 and the outer cylinder body 140 in the utility model are conventional modes in the field, and will not be described in detail.

[0056] The following will be described in combination with Figures 2-3 、 Figures 8-11 In the utility model, the piston assembly 120 comprises a piston base 121, a piston rod 122 and a first elastic member 123. The piston base 121 is arranged in the cavity of the inner cylinder body 130 in an axial sliding mode, the rear end of the piston rod 122 is fixedly connected with the front end of the piston base 121, the front end of the piston rod 122 abuts against the jaw assembly 110, and the first elastic member 123 is sleeved on the piston rod 122 and abuts against the front end between the piston base 121 and the inner cylinder body 130. When the gas passage 132 ventilates the cavity of the inner cylinder body 130, the piston base 121 is driven to move forward in the axial direction, thereby pushing the piston rod 122 to move forward in the axial direction and pushing the jaw assembly 110. In this process, the first elastic member 123 is compressed and deformed. When the gas passage 132 stops ventilating the cavity of the inner cylinder body 130 or performs air extraction, negative pressure application or the like on the cavity of the inner cylinder body 130, the first elastic member 123 restores the deformation and drives the piston rod 122 to move backward to reset.

[0057] More specifically, the front end of the piston rod 122 forms a tapered abutting end 1221 which penetrates the front end of the inner cylinder body 130 to push the jaw assembly 110, so that the jaw assembly 110 is opened or moves in the axial direction as a whole, which will be described in detail later.

[0058] In the utility model, the first elastic member 123 is preferably a spring, but is not limited thereto. Of course, other elastic components can also be selected to reset the piston rod 122.

[0059] The following will be described in combination with Figures 1-6 In the first embodiment of the utility model, the jaw assembly 110 comprises a fixed seat 111 and a plurality of jaws 112. The fixed seat 111 is provided with a plurality of clamping grooves 1111 extending in the radial direction on one side surface thereof. Specifically, the number of the clamping grooves 1111 is opposite to the number of the jaws 112. The center of the fixed seat 111 is also provided with a circular through hole 1112, and the plurality of clamping grooves 1111 are uniformly arranged around the edge of the through hole 1112. Each jaw 112 is installed in the clamping groove 1111 and is uniformly arranged around the center of the fixed seat 111, as shown in Figure 1 .

[0060] Referring to Figures 5-6As shown, in the embodiment, each of the clamping jaws 112 comprises a mounting block 1121 and a first clamping jaw 1122 arranged at an angle. The connecting position 1123 between the first clamping jaw 1122 and the mounting block 1121 is in an arc shape, thereby increasing the stress area of the stress point of the first clamping jaw 1122, improving the stress, enhancing the strength of the clamping jaw 112, avoiding or reducing the use of the broken jaw, reducing or avoiding the replacement of the clamping jaw 112, and thereby improving the production efficiency.

[0061] In the embodiment, the cross section of the first clamping jaw 1122 is in a fan shape, the first clamping jaw 1122 and the mounting block 1121 are preferably in an L-shaped structure, and the connecting position 1123 between the first clamping jaw 1122 and the mounting block 1121 is preferably in an L-shaped arc structure, thereby increasing the stress area of the stress point of the first clamping jaw 1122, improving the stress, enhancing the strength of the clamping jaw 112, and avoiding the use of the broken jaw. In addition, the inner side of each mounting block 1121 is provided with a tapered pushing surface 1121a. The shape of the pushing surface 1121a corresponds to the shape of the abutting end 1221 of the piston rod 122. In combination with Figure 2 As shown, when the piston rod 122 passes through the through hole 1112 in the center of the fixed seat 111, it can act on the pushing surface 1121a of each mounting block 1121, thereby driving each clamping jaw 112 to move along the radial direction of the fixed seat 111 or driving each clamping jaw 112 to move along the axial direction of the fixed seat 111.

[0062] Continuing to combine Figures 1-6 、 Figure 9 As shown, in an embodiment of the utility model, the clamping jaw assembly 110 is suitable for a shaftless glass cloth conveying mechanism. Therefore, the mounting block 1121 of each clamping jaw 112 is slidingly installed in the clamping groove 1111, so that each clamping jaw 112 can reciprocate along the radial direction of the fixed seat 111. When the abutting end 1221 of the piston rod 122 pushes the pushing surface 1121a of the mounting block 1121 by passing through the through hole 1112 in the center of the fixed seat 111, it will drive each mounting block 1121 to move along the radial direction, thereby opening each first clamping jaw 1122 to clamp the inner tube of the glass cloth. The state of opening of each first clamping jaw 1122 can be referred to Figure 9 When each mounting block 1121 moves along the radial direction of the fixed seat 111 and returns to the original position, it will make each first clamping jaw 1122 close to release the inner tube of the glass cloth, as shown in the state of Figure 1 In the embodiment, by opening or closing the first clamping jaw 1122 of each clamping jaw 112, the glass cloth with an inner tube size is clamped or released. For example, the glass cloth with an inner tube size of 3 inches or 6 inches is clamped or released.

[0063] Continuing to combine Figures 1-6As shown, in the present embodiment, the jaw assembly 110 further comprises a plurality of second elastic members (not shown), which are abutted between the end of the mounting block 1121 and the fixing base 111, for driving the jaw 112 to reset. Specifically, the end of the mounting block 1121 is provided with a positioning hole 1121b, when the mounting block 1121 is installed in the clamping groove 1111, one end of the second elastic member is accommodated in the positioning hole 1121b and abuts against the mounting block 1121, and the other end abuts against the fixing base 111. Therefore, when the mounting block 1121 is pushed to move towards the edge of the fixing base 111, i.e. the jaw 112 is moved radially to open, the second elastic member will be squeezed to deform, and when the mounting block 1121 loses the pushing force, the second elastic member restores the deformation to drive the mounting block 1121 to reset, i.e. to drive the jaw 112 to reset.

[0064] Preferably, the second elastic member is a spring, but is not limited thereto. Of course, other elastic components can also be selected to achieve the reset of the jaw 112.

[0065] The following will be described in combination with Figures 7-15 As shown, in the second embodiment of the present utility model, the structure of each jaw 112 is slightly different from that in the above-mentioned first embodiment. Specifically, in addition to having the structure in the above-mentioned first embodiment, the outer side of the end of the first clamping jaw 1122 away from the mounting block 1121 is preferably provided with a first clamping tooth 1122a, which is uniformly arranged along the radial direction of the first clamping jaw 1122. Referring to Figure 12 As shown, when the plurality of first clamping jaws 1122 are closed, the plurality of first clamping jaws 1122 form a first clamping head in the shape of a cylinder, and the outer side of the first clamping head is in the shape of a gear. Referring to Figure 9 As shown, when each first clamping jaw 1122 is opened to clamp the inner cylinder of the glass cloth, the first clamping tooth 1122a of the first clamping jaw 1122 abuts against the inner cylinder of the glass cloth to increase the friction, so that the clamping of the inner cylinder of the glass cloth is more stable.

[0066] In combination with Figures 12-15 As shown, in the present embodiment, each jaw 112 further comprises at least one second clamping jaw 1124. Specifically, the second clamping jaw 1124 is arranged at an angle with the first clamping jaw 1122, and the second clamping jaw 1124 is consistent with the protruding direction of the mounting block 1121. Moreover, the second clamping jaw 1124 can be spaced apart from or connected to the mounting block 1121, which is not specifically limited herein.

[0067] In the embodiment, the jaw assembly 110 is also applicable to the shaftless glass cloth sending mechanism. Therefore, the mounting block 1121 of each jaw 112 is slidingly mounted in the clamping groove 1111 and can reciprocate along the radial direction of the fixed seat 111. The structure of the fixed seat 111 and the mounting mode of the jaw 112 are the same as those in the first embodiment. In this way, when the mounting block 1121 is forced to reciprocate, the second clamping jaw 1124 and the first clamping jaw 1122 of each jaw 112 are simultaneously opened or closed. Through the arrangement of the first clamping jaw 1122 and the second clamping jaw 1124, the jaw 112 can clamp or release glass cloths of different inner tube sizes, so that the jaw 112 can automatically adapt to the clamping or releasing of glass cloths of at least two sizes without the need to replace the jaw 112, thereby avoiding frequent replacement of the jaw 112 during production, and further improving production efficiency.

[0068] In combination Figures 14-15 As shown in the embodiment, the connection position 1123 of the second clamping jaw 1124 and the first clamping jaw 1122 and / or the connection position 1123 of the mounting block 1121 is in an arc structure. In this way, the stress area of the force point of the first clamping jaw 1122 and the second clamping jaw 1124 is increased, the stress is improved, the strength of the jaw 112 is enhanced, the jaw 112 can avoid breaking when clamping glass cloths of any size, the number and frequency of replacing the jaw 112 are reduced, and the production efficiency is further improved.

[0069] In combination Figures 14-15 As shown in a specific embodiment, each jaw 112 further includes a second clamping jaw 1124, the second clamping jaw 1124 is protruding from the first clamping jaw 1122, the second clamping jaw 1124 is connected with the protruding direction of the mounting block 1121, that is, the lower end surface of the second clamping jaw 1124 is connected with the top surface of the mounting block 1121, as shown in Figure 15 As shown. And the cross section of the first clamping jaw 1122 and the second clamping jaw 1124 is in a fan structure, and the radius of the second clamping jaw 1124 is greater than that of the first clamping jaw 1122, so that the second clamping jaw 1124 can clamp glass cloths with a larger inner tube size. For example, the first clamping jaw 1122 clamps or releases glass cloths with an inner tube size of 3 inches, and the second clamping jaw 1124 clamps or releases glass cloths with an inner tube size of 6 inches, thereby automatically adapting to the clamping or releasing of glass cloths of two inner tube sizes without the need to replace the jaw 112.

[0070] In the specific embodiment, the first clamping jaw 1122 and the mounting block 1121 are substantially L-shaped structures, and the upper end surface of the first clamping jaw 1122 and the second clamping jaw 1124 is L-shaped and arc-shaped, and the lower end surface of the second clamping jaw 1124 and the mounting block 1121 is also L-shaped and arc-shaped. The structure increases the stress area of the stress points of the first clamping jaw 1122 and the second clamping jaw 1124, thereby improving the stress, enhancing the overall strength of the clamping jaw 112, avoiding the situation of broken jaw, and further improving the production efficiency.

[0071] Continuing to refer to Figures 14-15 In the specific embodiment, the outer side surface of the second clamping jaw 1124 is preferably provided with a second clamping tooth 1124a, which is uniformly arranged along the radial direction of the second clamping jaw 1124. Figure 8 、 Figure 12 When the plurality of second clamping jaws 1124 are closed, the plurality of second clamping jaws 1124 form a second chuck in the shape of a cylinder, and the outer side surface of the second chuck is in the shape of a gear. Figure 9 When each second clamping jaw 1124 is opened to clamp the inner cylinder of the glass cloth, the second clamping tooth 1124a of the second clamping jaw 1124 abuts against the inner cylinder of the glass cloth to increase friction, so that the inner cylinder of the glass cloth is clamped more stably.

[0072] In the embodiment, the structures of other parts of the clamping jaw 112 are the same as those in the first embodiment, and will not be described again.

[0073] In combination with Figures 1-15 In a specific embodiment of the utility model, the clamping jaw assembly 110 includes six clamping jaws 112. Correspondingly, the fixing seat 111 is provided with six clamping slots 1111, which are uniformly arranged along the circular through hole 1112 at the center of the fixing seat 111. Understandably, the number of clamping jaws 112 is not limited to six in the embodiment, and other numbers are also feasible according to actual use needs.

[0074] Again in combination with Figures 1-15 In the utility model, the clamping jaw 112 is preferably integrally formed by alloy structural steel or high-strength steel, so that the clamping jaw 112 has high strength and high toughness, and high hardenability, further enhancing the strength of the clamping jaw 112, avoiding the situation of broken jaw in use, and further improving the production efficiency.

[0075] In a specific embodiment, the clamping jaw 112 is preferably integrally formed by 40CrMo alloy structural steel or 42CrMo high-strength steel. Among them, 40CrMo alloy structural steel has high strength, high toughness and good wear resistance; and 42CrMo steel belongs to super high-strength steel, has higher strength and toughness, and better hardenability. The use of the aforementioned steel to form the clamping jaw 112 makes the clamping jaw 112 have a higher fatigue limit and a better ability to resist multiple impacts, so that the first clamping jaw 1122 and the second clamping jaw 1124 are less likely to break or can be avoided to break, and the downtime for replacing the clamping jaw 112 is reduced or avoided, thereby further improving the production efficiency.

[0076] In the following Figures 16-20 As shown in the third embodiment of the utility model, through the simple modification of the clamping jaw assembly 110, the glass cloth sending mechanism can be quickly switched from shaftless type to shaft type without modifying other structures of the existing shaftless glass cloth sending mechanism, so that the shaftless type or shaft type structure can be selected according to the working condition, thereby solving the problem of end weft skew by using the shaft type structure and reducing production loss.

[0077] In the following Figures 16-20 As shown in the third embodiment of the utility model, through the simple modification of the clamping jaw assembly 110, the glass cloth sending mechanism can be quickly switched from shaftless type to shaft type without modifying other structures of the existing shaftless glass cloth sending mechanism, so that the shaftless type or shaft type structure can be selected according to the working condition, thereby solving the problem of end weft skew by using the shaft type structure and reducing production loss.

[0078] In the following Figures 16-20 As shown in the third embodiment of the utility model, through the simple modification of the clamping jaw assembly 110, the glass cloth sending mechanism can be quickly switched from shaftless type to shaft type without modifying other structures of the existing shaftless glass cloth sending mechanism, so that the shaftless type or shaft type structure can be selected according to the working condition, thereby solving the problem of end weft skew by using the shaft type structure and reducing production loss.

[0079] In a preferred embodiment, the first engaging structure 1133 is an external gear, and the second engaging structure 210 is an internal gear that meshes with the external gear. Thus, when the engaging member 113 is inserted into the air shaft 200, engagement and fixation are achieved through the cooperation of the external and internal gears, simplifying the fixed connection structure between the engaging member 113 and the air shaft 200 and making the connection more convenient.

[0080] Combination Figures 16-18 As shown, in one specific embodiment, the engaging member 113 includes a fixing part 1131 and a connecting shaft 1132 protruding from the fixing part 1131. The connecting shaft 1132 preferably has a tapered structure, and a through hole is provided at the center of the connecting shaft 1132. The surface of the connecting shaft 1132 is provided with the first engaging structure 1133, that is, an external gear. During installation, the connecting shaft 1132 is sleeved on the closed first jaws 1122 through the through hole, and the fixing part 1131 and / or the connecting shaft 1132 are locked to the jaws 112 by fasteners. The engaging member 113 can be disassembled by removing the fasteners.

[0081] The following is combined Figures 1-20 As shown, in this invention, the engaging member 113 is detachably connected to at least one of the first jaw 1122, the second jaw 1124, and the mounting block 1121. In other words, after the engaging member 113 is fitted over the closed first jaws 1122, the engaging member 113 can be locked to at least one of the first jaws 1122, the second jaw 1124, and the mounting block 1121 by fasteners, thereby locking the engaging member 113 onto the gripper assembly 110. The specific locking position of the engaging member 113 can be flexibly set according to the specific structure of the grippers 112.

[0082] The following is combined Figures 1-6 , Figures 16-20 As shown, in one specific embodiment, the structure of the gripper 112 is the same as... Figures 1-6 The structure shown is as described in the first embodiment above, and will not be repeated here. In this specific embodiment, the engaging member 113 is locked to the mounting block 1121 and / or the first claw 1122 by a locking fastener.

[0083] Combination Figures 4-6 , Figures 16-20As shown, in one specific embodiment, the fixing part 1131 has a connecting hole 1134, and the mounting block 1121 has a connecting hole 1121c corresponding to the connecting hole 1134. After the connecting shaft 1132 is sleeved on the closed first claws 1122 through the through holes, it is locked in place by locking members into the connecting holes 1134 on the fixing part 1131 and the connecting holes 1121c on the mounting block 1121, thereby locking the engaging member 113 to the mounting block 1121. The locking member can be a bolt, etc., and is not specifically limited here.

[0084] Understandably, the locking member 113 can also be locked onto the clamping jaw 112 by fastening the connecting shaft 1132 to the first clamping jaw 1122, or by engaging the connecting shaft 1132 to the first clamping jaw 1122 through a locking structure. Of course, both of the above fixing methods can be used simultaneously to make the installation of the locking member 113 more stable.

[0085] The following is combined Figures 7-15 , Figures 16-20 As shown, in another specific embodiment, the structure of the gripper 112 is the same as... Figures 7-15 The structure shown is such that the gripper 112 has a first gripper 1122 and a second gripper 1124, as described in the second embodiment above. In this specific embodiment, the engaging member 113 is locked to at least one of the mounting block 1121, the first gripper 1122, and the second gripper 1124 by a locking fastener.

[0086] In one specific embodiment, the mounting block 1121 has a connecting hole that corresponds to the connecting hole 1134 on the fixing part 1131. After the connecting shaft 1132 is sleeved on the closed first claws 1122 through the through hole, it is locked in the fixing part 1131 and the connecting hole on the mounting block 1121 by a locking member, thereby locking the engaging member 113 to the mounting block 1121. The locking member can be a bolt or the like, and is not specifically limited here.

[0087] Understandably, a connecting hole can also be provided on the second claw 1124 to correspond to the connecting hole 1134 on the fixing part 1131. After the connecting shaft 1132 is sleeved on the closed first claws 1122 through the through hole, it is locked in the connecting hole on the fixing part 1131 and the second claw 1124 by the locking member, thereby locking the engaging member 113 to the second claw 1124.

[0088] Of course, the connecting shaft 1132 can also be fastened to the first jaw 1122, or the connecting shaft 1132 and the first jaw 1122 can be engaged by a locking structure, which can also lock the locking member 113 onto the jaw 112.

[0089] Understandably, in the present specific embodiment, at least two of the above three fixing methods can also be used simultaneously, so that the installation of the clamping piece 113 is more stable.

[0090] Next, the working principle of the glass cloth sending mechanism pneumatic chuck of the utility model will be described with reference to Figures 1-20 the drawings.

[0091] First, the working principle and process of the shaftless glass cloth sending mechanism will be described with reference to Figures 7-15 the clamping jaw assembly 110 in the above second embodiment. Specifically, when the glass cloth needs to be clamped, the gas passage 132 of the gas guide rod 131 is used to supply gas to the cavity of the inner cylinder body 130, thereby driving the piston assembly 120 to move forward and extend, so that the abutting end 1221 of the piston rod 122 pushes the pushing surface 1121a of each clamping jaw 112 through the front end of the inner cylinder body 130, thereby making each clamping jaw 112 move radially and open. At this time, the first clamping jaw 1122 can be used to expand the paper tube of the glass cloth with an inner tube size of 3 inches, and the second clamping jaw 1124 can be used to expand the paper tube of the glass cloth with an inner tube size of 6 inches. According to the needs, the clamping of glass cloth with different inner tube sizes can be realized. Without replacing the clamping jaw 112, the clamping or release of glass cloth with at least two sizes can be automatically adapted, thereby avoiding frequent replacement of the clamping jaw 112 in the production process, and improving the production efficiency.

[0092] When the glass cloth needs to be released, the gas passage 132 is used to perform air extraction (or apply negative pressure, etc.) to the cavity of the inner cylinder body 130. The specific method is a conventional method in the art. In this way, the piston assembly 120 can be quickly and reliably retracted and reset. At the same time, the piston assembly 120 is also reset by moving backward under the elastic force of the first elastic member 123, and each clamping jaw 112 is reset by moving under the elastic force of the second elastic member. Wait for the next glass cloth clamping operation.

[0093] Understandably, the clamping jaw assembly 110 in the above first embodiment is used in the shaftless glass cloth sending mechanism, and the working principle is the same as that of the clamping jaw assembly 110 in the second embodiment, which will not be repeated.

[0094] Next, the working principle and process of the shaftless glass cloth sending mechanism will be described with reference to Figures 1-6 the drawings. Figures 16-20 Specifically, the clamping jaw assembly 110 in the above first embodiment is used to switch the shaftless glass cloth sending mechanism to the shaft type.

[0095] When switching to a shaft-type configuration is required, the engaging member 113 is fitted over the closed first claws 1122, and then locked in place by the locking member into the connecting hole 1134 on the fixing part 1131 and the connecting hole 1121a on the mounting block 1121, thereby locking the engaging member 113 into the mounting block 1121. Figures 17-18 As shown.

[0096] Combination Figures 19-20 As shown, when connected to the air shaft 200 on the glass cloth, the abutting end 1221 of the piston rod 122 passes through the front end of the inner cylinder 130 and pushes the pushing surface 1121a of each gripper 112, causing the gripper assembly 110 to move forward as a whole and insert the engaging member 113 into the air shaft 200. Engagement and fixation are achieved through the cooperation of the external and internal gears, thereby clamping the glass cloth. Since only the engaging member 113 needs to be installed to quickly switch the glass cloth feeding mechanism from a shaftless type to a shafted type, and no other structural modifications to the shaftless glass cloth feeding mechanism are required, the modification cost is low and the modification time is short. During use, a shaftless or shafted structure can be selected according to the working conditions, thereby using the shafted structure to solve the weft skew problem at the roll end and reduce production losses.

[0097] In summary, because the pneumatic chuck of the glass cloth feeding mechanism of this utility model has each gripper 112 of its gripper assembly 110 including a mounting block 1121 and a first gripper 1122 arranged at an angle, and the connection position 1123 between the first gripper 1122 and the mounting block 1121 is arc-shaped, the force-bearing area of ​​the force-bearing point is increased, the stress is increased, thereby enhancing the strength of the gripper 112, avoiding the occurrence of gripper breakage, reducing the number and frequency of gripper replacement, and thus improving production efficiency.

[0098] The gripper assembly 110 and other parts of the glass cloth dispensing mechanism involved in this utility model are conventional structures well known to those skilled in the art, and will not be described in detail here.

[0099] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the scope of the present utility model application shall still fall within the scope of the present utility model.

Claims

1. A pneumatic collet for a glass cloth feed mechanism comprising a collet jaw assembly, characterized by, The jaw assembly comprises: a fixed seat; a plurality of jaws, each of which is mounted on the fixed seat and arranged uniformly around the center of the fixed seat; wherein each of the jaws comprises a mounting block and a first jaw arranged at an angle, and the connection position of the first jaw and the mounting block is in an arc structure.

2. The pneumatic collet for glass cloth feed mechanism according to claim 1, wherein A plurality of clamping grooves are formed on the fixed seat and extend radially, and the mounting block of each jaw is slidingly mounted in the clamping groove and can reciprocate along the radial direction of the fixed seat. The first jaw is opened or closed by the reciprocating movement of the mounting block, thereby achieving clamping or releasing of the workpiece.

3. The pneumatic collet for glass cloth feed mechanism according to claim 2, wherein The outer side of the end of the first jaw away from the mounting block is provided with a first clamping tooth.

4. The pneumatic collet for glass cloth feed mechanism according to claim 2, wherein Each of the jaws further comprises at least one second jaw, which is arranged at an angle with the first jaw and has the same protruding direction as the mounting block. The connection position of the second jaw and the first jaw and / or the connection position of the second jaw and the mounting block are both in an arc structure. When the mounting block reciprocates, the second jaw and the first jaw are opened or closed.

5. The pneumatic collet for glass cloth feed mechanism according to claim 4, wherein The outer side of the second jaw is provided with a second clamping tooth.

6. The pneumatic collet for glass cloth feed mechanisms according to any one of claims 1 to 5, characterized in that, Each of the jaws is integrally formed by alloy structural steel or high-strength steel.

7. The pneumatic collet for glass cloth feed mechanisms according to any one of claims 1 to 5, wherein The jaw assembly further comprises a clamping member, which is sleeved outside the closed first jaw and detachably connected with the jaw, and the clamping member is used to connect the gas inflation shaft.

8. The pneumatic collet for glass cloth feed mechanism according to claim 7, wherein The surface of the clamping member is provided with a first clamping structure, and the inner wall of the gas inflation shaft is provided with a second clamping structure matched with the first clamping structure. When the clamping member is inserted into the gas inflation shaft, the first clamping structure and the second clamping structure are clamped to achieve fixation.

9. The pneumatic collet for glass cloth feed mechanisms as set forth in claim 7, wherein The clamping member comprises a fixed part and a connecting shaft protruding from the fixed part, and a through hole is formed in the connecting shaft. The connecting shaft is sleeved outside the closed first jaw through the through hole, and the fixed part is detachably connected with the mounting block and / or the connecting shaft is detachably connected with the first jaw. The connecting shaft is used to connect the gas inflation shaft.

10. The pneumatic collet for glass cloth feed mechanisms as set forth in claim 9, wherein The connecting shaft is in a tapered structure, and the surface of the connecting shaft is provided with a first clamping structure. The fixed part and the mounting block are provided with corresponding connecting holes, which are detachably locked in the connecting holes by a locking member.

11. The pneumatic collet for glass cloth feed mechanisms as set forth in claim 4, wherein The jaw assembly further comprises a clamping member, which is sleeved outside the closed first jaw and detachably connected with at least one of the first jaw, the second jaw, and the mounting block. The clamping member is used to connect the gas inflation shaft.

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