JP3089253U - Gut holding and positioning structure of gut stretching machine - Google Patents

Abstract

(57) [Summary] (with correction) [Problem] To provide a gut holding and positioning structure for a gut stretching machine. SOLUTION: To provide a gut holding positioning structure of a gut stretching machine, in which a push lever 84 drives a pusher 20 to move an interlock 60 sideways, thereby allowing a slide sheet and a gut clip. Are synchronously stopped and positioned, thereby increasing the effectiveness of the stopped positioning.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a type of gut stretcher accessory. More specifically, the gut clip of a racket is positioned in synchronization with the gut clip, thereby increasing the effectiveness of the stop position determination. Related to positioning structure.

[0002]

[Prior art]

 In general, balls such as tennis and badminton have a striking surface formed by knitting a gut in a racket frame, and the striking surface is stretched to form an effective striking force on the sphere, In addition, the player can easily control the hitting direction. However, the striking surface is gradually relaxed due to the corresponding acting force formed on the striking surface of the sphere after the ball is hit, and the gut is subjected to a tensile force for a long period of time. Requires replacement. At this time, generally, a gut stretcher is used to form a net-like striking surface through the gut in the frame, and the player controls the numerical value of the corresponding pulling force at both ends of the gut as necessary.

[0003] Shown in FIG. 1 is a three-dimensional view of a partial structure of a traditional gut stretching machine, which includes a fixing seat A for fixing a racket, a base C, and a gut clip D. Since the calibration of the fixed seat A is not related to the technology of the present invention, the description is omitted. The movement adjustment and the stop and fixation of the gut clip D are completed by two operations. First, the slide block 1 'is moved to a fixed point in the guide rail 2' of the base C, and then the fixed knob 3 'is rotationally adjusted. Then, the slide block 1 'is fixed, and then the stop push lever 4' is pressed so that the gut clip D pinches the gut tightly, and the position of the gut clip D is changed to hold another gut. In order to adjust the position of the gut clip D, the fixed knob 3 'and the stop push lever 4' are turned. The operation is inconvenient and the adjustment speed is slow. Therefore, the present inventor has already provided a kind of fast moving and stopping mechanism of the gut clip, and has obtained Taiwan Utility Model Application No. 78201394A01.

[0004] The rapid moving and stopping mechanism of the gut clip described in Taiwan Utility Model Application No. 78201394A01 is provided at the upper end and the lower end of the long rail groove C1 provided on the base C, respectively, as shown in FIG. One disk 1 and a slide rail sheet 2 are provided, the slide block 5 can be rotated 360 degrees, the shaft 7 at the bottom end of the gut clip 8 is housed in the side end of the slide block 5, and the slide block 5 is rectangular. A catch plate 6 is provided at the bottom end of the rail block 3. The catch plate 6 is pressed against a fulcrum 103 on the upper surface of the disk 1, and a shaft 7 at the bottom end of the gut clip 8 is separately provided. The push rod 9 is accommodated therein, and the push rod 9 is driven by the stop push lever 801, and the bottom end thereof presses the catch plate 6, so that the gut clip 8 is engaged. At the same time, the push rod 9 is driven to push the catch plate 6 downward, forcibly pressing the fulcrum 103 against the catch plate 6, thereby forcing the bottom surface of the disk 1 and the base C into the rail groove. The gut clip 8 can perform both rotation angle adjustment and positioning stop movement by pressing the upper surface located on both sides of C1 correspondingly, thereby simplifying the operation of the gut stretching machine.

[0005] This known technique is to press the stop push lever 801 so that the gut clip 8 clamps the gut, and at the same time, the push rod 9 is interlocked to tightly press the catch plate 6 so that the push rod 9 is pressed. Due to the corresponding pressure stress between the bottom end and the catch plate 6, the corrugated edge 703 of the bottom end of the shaft portion 7 and the cormorant of the slide block 5 contact the poetic surface 501, and generate a static friction force on the contact surface. This achieves the object of preventing the gut clip 8 from rotating freely, pressing the fulcrum 103 provided on the disk 1 against the catch plate 6, and positioning the slide block 5 synchronously to improve the convenience of operation. are doing. However, at the time of the positioning stop movement, the end of the push rod 9 and the fixed rod 4 form a downward relative acting force with respect to both ends of the catch plate 6, respectively, and the fulcrum 103 between the push rod 9 and the fixed rod 4 becomes the catch plate. 6, and the opposing forces in these directions tend to cause the catch plate 6 to be deformed to protrude in an arc shape. When the catch plate 6 is used for a long period of time, the catch plate 6 The material is fatigued, and these deformations are very likely to become plastic deformations that are difficult to recover. At this time, a sufficient relative pressure for driving and positioning is not formed between the push rod 9 and the catch plate 6 and between the catch plate 6 and the fulcrum 103, so that the gut clip 8 and the slide block 5 are stopped and positioned. Is not clear. At this time, the nut 402 at the bottom end of the fixed rod 4 or its local disassembly can be adjusted by turning the adjustment screw 902 at the bottom end of the push rod 9, but the adjustment space is finite and the catch plate 6 It is difficult to disassemble it and reassemble it, and it is generally difficult for the user to handle it by himself. It was difficult to maintain the effectiveness of the positioning, adjustment was required from time to time, and the service life of the catch plate 6 was finite.

[0006] Therefore, the present invention provides a new and industrially useful device that overcomes the above-mentioned disadvantages of the prior art.

[0007]

[Problems to be solved by the invention]

 The main object of the present invention is to provide a gut pinching and positioning structure of a gut stretching machine, which drives a pusher with a push lever to move the interlock laterally, thereby providing a slide seat. In addition, the stop position of the gut clip is determined synchronously, thereby increasing the effectiveness of the stop position.

[0008]

[Means for Solving the Problems]

 The invention of claim 1 comprises a slide sheet, a pusher, a positioner, and a rail block, wherein the rail block is fitted to a machine seat of a gut stretcher, and the rail block passes through a guide groove, and the slide block is provided. A seat is provided at the upper part of the rail block, the positioning device is provided at one end in the vicinity, a sheet pipe is erected at the other end in the vicinity, and a support shaft connected to the gut clip is inserted into the seat pipe. The push lever of the gut clip is interlocked with the pusher with one connecting rod, and is used for synchronous operation of the support shaft and the positioning device, thereby stopping and positioning the gut clip, A pipe hole is formed so that the jacket step and the accommodation chamber step communicate with each other, the support shaft is pivoted on the jacket step, and the bottom end is extended to the accommodation chamber step and a convex edge is formed. It is in contact with said receiving chamber stage top end-to-end face, and to be subjected to position the angle of the gut clip. A gut provided with a single shaft rod on the pusher and pivotally mounted on the support shaft, the upper end of which is pivotally connected to one end of the connecting rod to provide interlocking between the push lever and the shaft rod; In the gut sandwiching positioning structure of the stretching machine, the shaft rod bottom end is housed in the housing chamber stage and one push block is provided, and a tapered guide surface is provided around an outer ring of the push block, and the positioning is performed. A container is composed of a cap and a holding block, a tapered receiving surface is provided on the outer periphery of the cap, and a rectangular fitting block is protruded from the bottom end of the cap, and the slide sheet is fitted to the cap. The cap is inserted and pivoted into the fitting hole, the fitting block at the bottom end of the cap is inserted into the guide groove, and a rectangular connection projecting from the upper end of the holding block is provided. Block is the guide groove The cap and the holding block are screwed together with a plurality of adjustment bolts, and the cap and the holding block hold the slide sheet and the rail block in correspondence with each other to perform stop positioning of the slide sheet. One empty room is opened between the positioning device and the storage chamber stage in the slide sheet, communicates with the fitting hole, and an interlock is pivotally installed in the empty room, and the interlock is received by a push ring, a wheel seat, and the like. And a compensating screw rod and a catch block, of which a receiving ring is pivotally mounted at one end of the wheel seat, and a wheel edge thereof protrudes into the accommodation chamber step and pushes the wheel seat against a slide seat. The catch block is provided with a catch end at one end of the catch block corresponding to the receiving surface, and one end of the adjusting screw rod is screwed into the catch block. It is, that other end abuts the wheel seat, characterized in that it is provided to adjust the width 突伸 from the accommodation stage of receiving the pressing ring, and the gut sandwich positioning structure Gacchan preparative tension machine. According to a second aspect of the present invention, in the gut holding / positioning structure of the gut stretching machine according to the first aspect, the outer diameter of the guide surface gradually decreases from the upper end toward the bottom end, and the outer diameter of the cap increases from the upper end. The gut gripping and positioning structure of the gut stretching machine is characterized by gradually decreasing toward the bottom end. According to a third aspect of the present invention, in the gut holding and positioning structure of the gut stretching machine according to the first aspect, the bottom end of the shaft is screwed axially to the push block with one bolt. , And a gut holding and positioning structure for a gut stretching machine. According to a fourth aspect of the present invention, in the gut holding and positioning structure of the gut stretching machine according to the first aspect, two lugs are provided on both sides of one end of the wheel seat, and the receiving and pressing ring is provided between the lugs. A gut-clamping and positioning structure for a gut-stretching machine, wherein the gut-clamping machine is provided so as to be pivotally connected to each ear piece by a single wheel shaft and to be used for pivotal connection between the receiving push ring and the wheel seat. According to a fifth aspect of the present invention, in the gut holding / positioning structure of the gut stretching machine according to the first aspect, one first working hole penetrates the cap in a radial direction, and the first working hole has an empty space in the axial direction. The cap is shut off between the first working hole and the empty chamber, and a second working hole is opened at the outer end of the slide sheet to communicate with the fitting hole. A screw hole is provided in an axially extending portion of the chamber in the second working hole in an axial direction through the catch block, one end of the adjusting screw rod is screwed into the screw hole, and one fitting hole is formed in the end face. And a gut holding / positioning structure for a gut stretching machine, characterized in that the adjusting screw rod can be rotationally adjusted by allowing a manual tool to enter the chamber through the second working hole. According to a sixth aspect of the present invention, in the gut holding / positioning structure for a gut stretching machine according to the fifth aspect, a seal cap is provided at an outer end of the second working hole. It has a gut sandwiching positioning structure.

[0009]

[Embodiment of the invention]

 The gut sandwiching and positioning structure of the gut stretching machine of the present invention includes a slide sheet, a pusher, a positioning device, and a rail block, wherein the rail block is fitted to the machine sheet of the gut stretching machine, and the rail block is provided with a guide groove. The slide sheet is provided at the top of the rail block, the positioning device is provided at one end near the seat, the seat pipe is erected at the other end near, and connected to the bottom of the gut clip. The support shaft is inserted and pivoted into the seat pipe, and the push lever portion of the gut clip is interlocked with the pusher by one connecting rod, and is used for the synchronous operation of the support shaft and the positioning device. The gut clip is stopped and positioned.

The pipe hole of the sheet pipe is formed so that a jacket step and a storage chamber step communicate with each other, the support shaft is pivotally mounted on the jacket step, and a bottom end of the pipe hole extends to the storage chamber step and has a convex edge. Is formed, and abuts against the upper end surface of the storage chamber step to serve for positioning the angle of the gut clip. A shaft rod is provided on the pusher and is pivotally mounted on the support shaft. The upper end of the push rod is pivotally connected to one end of the connecting rod to be used for interlocking the push lever with the shaft rod.

The features of the present invention are as follows. That is, the bottom end of the shaft is accommodated in the accommodation chamber stage, one push block is provided, a tapered guide surface is provided around the outer ring of the push block, and the positioning device is provided with a cap. The cap is provided with a tapered receiving surface on the outer periphery of the cap, a rectangular fitting block is provided at the bottom end of the cap, and one fitting hole is provided on the slide sheet according to the cap. The cap is inserted and pivoted into the fitting hole, the fitting block at the bottom end of the cap is inserted into the guide groove, and the rectangular connecting block protruding from the upper end of the holding block is connected to the guide groove. The cap and the holding block are screwed together with a plurality of adjusting bolts, and the cap and the holding block respectively hold the slide sheet and the rail block in correspondence with each other. Perform Tomedo positioning.

In the slide sheet, an empty space is provided between the positioning device and the accommodation chamber stage, and is connected to the fitting hole, and an interlock is pivotally provided in the empty room, and the interlock is received. A push ring, a ring seat, an adjusting screw rod and a catch block, of which a receiving ring is pivotally mounted at one end of the ring seat, and its ring edge protrudes and extends to the accommodation chamber step, and the ring is formed on the slide seat. The catch block is provided for pushing the seat to move in the axial direction. A catch end is provided at one end of the catch block in accordance with the receiving pressing surface, and one end of the adjusting screw rod is provided at the catch block. The other end abuts on the wheel seat and serves to adjust the width of the receiving ring protruding from the receiving step.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 3 and 4, the gut holding and positioning structure of the gut stretching machine of the present invention comprises a slide sheet 10, a pusher 20, a positioner 30, and a rectangular slide block 40. I have. The slide block 40 is fitted on the upper edge of the machine sheet of the gut stretching machine, and the slide block 40 passes through the rectangular guide groove 42, and the slide sheet 10 is placed on the upper side of the slide block 40. This allows the slide sheet 10 to be reciprocally slidable in the axial direction of the guide groove 42, and the positioning device 30 is provided at one end near the slide sheet 10, for stopping and positioning the slide sheet 10. Provided. A seat pipe 11 is erected at the other end near the slide sheet 10, a support shaft 50 provided at the bottom of the gut clip 180 is inserted into the seat pipe 11, and a push lever 84 of the gut clip 80 is plate-shaped. The connecting rod 86 is provided in conjunction with the pusher 20, and the support shaft 50 and the positioning device 30 are used in synchronization with the synchronous shaft to stop and position the gut clip 80.

As shown in FIGS. 4 and 5, a jacket step 112 and an accommodation chamber step 114 located at the lower end are formed in communication with the pipe hole of the seat pipe, and the inner diameter of the accommodation step 114 is determined by the inner diameter of the jacket. The support shaft 50 is larger than the inner diameter of the step 112, the support shaft 50 is pivotally mounted on the jacket step 112, the bottom end of the support shaft 50 extends to the accommodation chamber step 114, and the convex edge 51 is formed. It comes into contact with the upper end surface of the chamber step 114 and is used for positioning the angle of the gut clip 80. One through hole 52 passes through the axis of the support shaft 50 in the axial direction, and the pusher 20 passes through the through hole 52 with a single shaft rod 21. One end is pivotally connected to allow the push lever 84 and the shaft 21 to interlock. The above is the same as the above-mentioned well-known technique.

The bottom end of the shaft 21 is extended to the accommodation chamber step 114, and one push block 23 is screwed in the axial direction with a bolt 22, and a plan inner surface 232 is provided around the outer ring of the push block 23. The outer diameter of the guide surface 232 gradually decreases from the upper end toward the bottom end, and the guide surface 232 is tapered. The positioning device 30 is composed of a circular cap 31 and a holding block 32. The outer diameter of the cap 31 gradually decreases from the upper end toward the bottom end, and a tapered pressing surface 312 is formed on the outer peripheral surface of the cap 31. Is formed, and a rectangular fitting block 314 protrudes from the bottom end of the cap 31. A tapered fitting hole 12 penetrates through the slide sheet 10, the cap 31 is pivotally mounted on the fitting hole 12, the holding block 32 is a circular disk, and a rectangular connecting block 322 is provided at the upper end thereof. The cap 31 and the holding block 32 are screwed by a plurality of adjusting bolts 33, and the cap 31 and the holding block 32 are connected to the slide sheet 10 and the rail block. 40 is pinched.

In the slide sheet 10, an empty space 13 is provided between the positioning device and the accommodation room stage, and both ends of the empty room 13 communicate with the accommodation room stage 114 and the fitting hole 12, respectively. In addition, one interlock 60 is pivotally provided in the vacant space 13, and the interlock 60 is composed of a receiving wheel 61, a wheel seat 62, an adjusting screw rod 63 and a catch block 64. Of these, two ear pieces 622 are provided on both sides of one end of the ring seat 62, the receiving and pressing ring 61 is pivotally provided between the respective ear pieces 622, and the edge of the ring is projected and extended to the accommodation chamber step 114. In addition, it is pivotally connected to each ear piece 622 by one wheel axle 612, and is provided for the contact between the push block 23 and the receiving push wheel 61, and drives the wheel seat 62 to push in the axial direction. At one end of the catch block 64, a catch end 641 is provided at an angle to the receiving surface 312 so as to come into contact with the receiving surface 312, and a threaded hole 643 penetrates through the catch block 64 in the axial direction. One end of the adjusting screw rod 63 is screwed into the screw hole 643, and a hexagonal fitting hole 631 is formed in the end face, and the other end of the adjusting screw rod 63 abuts on the end face of the wheel seat 62. By rotating, the width of the extension of the receiving and pressing wheel 61 and the entry into the accommodation chamber step 114 is adjusted. Further, the cap 31 is provided with a first working hole 316 penetrating in the radial direction, the axial direction of the first working hole 316 is perpendicular to the axial direction of the empty space 13, and the first working hole 316 The gap between the empty chambers 13 is blocked by the cap 31 to be disconnected, and a second working hole 14 is provided at an outer end of the slide sheet 10 near the cap 31 to communicate with the fitting hole 12. The second working hole 14 is located at an axially extending portion of the empty space 13. Thereby, the user can make the manual tool enter the vacant chamber 13 through the second working hole 14 and adjust the rotation of the adjusting screw rod 63. A seal cap 15 is provided at an end.

When assembling the preferred embodiment of the present invention, first, the slide sheet 10, the support shaft 50, the pusher 20 and the interlock 60 are combined, and the gut clip 80 is screwed to the support shaft 50. Thereafter, the cap 31 is pivotally mounted on the fitting hole 12 and the cap 31 is rotated in order to make both ends of the first working hole 316 communicate with the vacant space 13 and the second working hole 14. At this time, a tool is inserted into the storage chamber 13 through the first and second working holes 316 and 14, and the adjusting screw rod 63 is rotated, whereby the receiving wheel 61 is adjusted and the storage chamber step 114 is adjusted. After the adjustment of the width of the slide sheet 10 and the second working hole 14 are closed by turning the cap 31 further, that is, the slide sheet 10 is It can be combined with the block 40, and the fitting block 314 is fitted into the guide groove 42. Finally, when the holding block 32 and the cap 31 are connected, and when the adjusting bolt 33 is tightened, the tightening of the adjusting bolt 33 is performed. By adjusting the tightness, the clearance between the clamping block 32 and the slide block 40 is retained, and the slide block 40 is prevented from being brought into close contact. 10 briefly as is slid, the seal cap 15 and 套設, to complete the assembly work.

As shown in FIGS. 4, 5, and 6, when the gut clip 80 is in progress and the gut clip 80 is to be moved to orient the gut and the gut is to be clamped, the push lever 84 is pressed downward. For example, the connecting rod 86 drives the pusher 20 to move it downward, and the push block 23 causes the interlock 60 to be moved by the lateral thrust formed by the guide surface 232 and the receiving wheel 61. , The cap 31 receives the catch of the catch block 64 and moves upward slightly by a small width, whereby a tight contact state is formed between the upper surface of the holding block 32 and the slide block 40. In addition, a static frictional force is formed between the two, that is, the slide sheet 10 is stopped and positioned, and any slide thereof is prevented. At this time, a tight locking state is formed between the holding block 32 and the slide block 40, and the cap 31 cannot move upward any more. When the push lever 84 is continuously pressed downward, the receiving push wheel 61 forms a reaction force on the pusher 20 that resists the downward movement of the push block 23, that is, When the push lever 84 is pushed to the lowest position (see FIG. 6), the convex edge 51 is tightly connected to the end face of the upper end portion of the accommodation chamber step 114. The angle of the gut clip 80 is stopped and positioned by the static friction force generated between the two and comes into contact with each other, thus completing the operation for determining the stopped and positioned position of the gut clip 80.

As can be seen from the above description, the present invention can effectively stop and position the gut clip by the novel structure, and in the process of operation, the receiving wheel 61 rotates on the surface of the guide surface 232, and the well-known structure is realized. It does not generate plastic deformation as in technology, and is highly effective in stationary positioning. Also, even if a worn state occurs between the guide surface 232 and the receiving presser wheel 61, the rotation of the adjusting bolt 33 or the adjusting screw rod 63 can be adjusted to maintain the reliability of the stop motion positioning. The frequency of adjustment required is much less than that known and the adjustment operation can proceed easily.

[0020]

[Effect of the invention]

 Taken together, the present invention utilizes a novel configuration, which allows the gut clips to be synchronously positioned at the same time as the racket gut is pinched, and the positioning of the stop motion is highly effective, and the configuration is not present in the conventional technology. Things. The embodiments described above do not limit the scope of the present invention, and any modification or modification of details that can be made based on the present invention shall fall within the scope of the present invention.

[Brief description of the drawings]

FIG. 1 is a three-dimensional view of a partial structure of a traditional gut stretching machine.

FIG. 2 is a view showing a rapid movement and stopping mechanism of a gut clip described in Taiwan Utility Model Application No. 78201394A01.

FIG. 3 is a perspective view of a preferred embodiment of the present invention.

FIG. 4 is an exploded perspective view of a preferred embodiment of the present invention.

FIG. 5 is a side sectional view of the preferred embodiment of the present invention.

FIG. 6 is a side cross-sectional view of the preferred embodiment of the present invention in a stationary position.

[Explanation of symbols]

A Fixed seat C Base D Gut clip 1 'Slide block 2' Guide rail
3 'fixed knob 4' stop push lever C1 rail groove 1 disk 103 fulcrum 2 slide rail seat 3
Slide block 4 fixed rod 402 nut 5
Slide block 501 End face 6 Catch plate 7
Shaft 703 Protrusion 8 Gut clip 801
Stop push lever 9 Push rod 902 Screw 10 Slide seat 11 Seat pipe 1
12 erection step 114 accommodation room step 12 fitting hole 1
3 Vacancy 14 Second working hole 15 Seal cap 2
0 Pusher 21 Shaft bar 22 Bolt 23
Push block 232 Guide surface 30 Positioner 31
Cap 312 receiving surface 314 fitting block 31
6 First working hole 32 Holding block 322 Connecting block 33
Adjusting bolt 40 Slide block 42 Guide groove 50
Support shaft 51 Convex edge 52 Through hole 60
Interlocking device 61 receiving wheel 612 wheel axle 62
Wheel seat 622 Ear piece 63 Adjusting screw rod 631 Fitting hole 64 Catch block 641 Catch end
643 screw hole 80 gut clip 84 push lever
86 connecting rod

Claims (6)

[Utility model registration claims] 1. A slide sheet, a pusher, a positioner, and a rail block, wherein the rail block is fitted to a machine seat of a gut stretching machine, and the rail block passes through a guide groove, and the slide sheet is The positioning device is provided at the top of the rail block and at one end in the vicinity, a seat pipe is erected at the other end in the vicinity, and a support shaft connected to the gut clip is inserted and pivoted into the seat pipe. The push lever of the gut clip is interlocked with the pusher by one connecting rod, and is used for synchronous operation of the support shaft and the positioning device, thus stopping and positioning the gut clip, A hole is formed in communication between the jacket step and the storage chamber step, the support shaft is pivotally mounted on the jacket step, and the bottom end is extended into the storage chamber step and a convex edge is formed to form the hole. Chamber level upper terminating end surface abuts, is subjected to position the angle of the gut clip. One push rod is provided on the pusher and is pivotally mounted on the support shaft. The upper end of the push rod is pivotally connected to one end of the connecting rod and is used for interlocking the push lever with the push rod. A bottom end of the shaft bar is housed in the housing chamber stage, one push block is provided, and a tapered guide surface is provided around an outer ring of the push block; Is composed of a cap and a clamping block, a tapered pressing surface is provided on the outer periphery of the cap, and a rectangular fitting block is provided at the bottom end of the cap so as to protrude. A fitting hole is provided, the cap is inserted and pivoted into the fitting hole, the fitting block at the bottom end of the cap is inserted into the guide groove, and a rectangular connecting block protruding from the upper end of the holding block is connected to the guide block. Fit in groove The cap and the holding block are screwed together with a plurality of adjustment bolts, and the cap and the holding block hold the slide sheet and the rail block in correspondence with each other to perform stop positioning of the slide sheet. A seat is provided between the positioning device and the storage chamber stage, and one vacant space is opened between the seat and the fitting hole, and an interlock is pivotally provided in the empty room, and the interlock is provided with a receiving ring, a wheel seat,
It is composed of an adjusting screw rod and a catch block, of which a receiving and pressing ring is pivotally mounted at one end of the wheel seat, and a wheel edge of the wheel is protruded and extended to the accommodation chamber step, and the slide seat pushes the wheel seat. The catch block is provided with a catch end at one end of the catch block corresponding to the receiving surface, one end of the adjusting screw rod is screwed into the catch block, and the other end of the adjusting screw rod is Abuts the seat,
A gut holding / positioning structure for a gut stretching machine, which is used for adjusting a width of the receiving and pushing wheel projecting from the storage step. 2. The gut holding / positioning structure of a gut stretching machine according to claim 1, wherein the outer diameter of the guide surface gradually decreases from the upper end toward the bottom end, and the outer diameter of the cap changes from the upper end to the bottom end. A gut pinching and positioning structure for a gut stretching machine, characterized in that it gradually decreases in a direction. 3. The gut holding and positioning structure for a gut stretching machine according to claim 1, wherein the bottom end of the shaft is screwed axially to the push block with one bolt. Gut holding and positioning structure for tensioning machines. 4. The gut pinching and positioning structure of a gut stretching machine according to claim 1, wherein two lugs are provided on both sides of one end of the wheel seat, and the receiving and pressing ring is pivotally provided between the lugs. And a gut-clamping positioning structure for a gut stretching machine, wherein the glove-holding device is pivotally connected to each ear piece by one wheel set and is used for pivotal connection between the receiving push ring and the wheel seat. 5. The gut holding / positioning structure of a gut stretching machine according to claim 1, wherein one first working hole penetrates the cap in a radial direction, and the first working hole has an axial direction of an empty chamber. The cap is closed between the first working hole and the empty chamber, and a second working hole is opened at an outer end of the slide sheet to communicate with the fitting hole. A screw hole is provided in the working hole in the axially extending portion of the chamber in the axial direction so as to pass through the catch block in the axial direction. One end of the adjusting screw rod is screwed into the screw hole, and one fitting hole is formed in the end face. A gut holding and positioning structure for a gut stretching machine, wherein a manual tool can be inserted into the chamber through the second working hole to adjust the rotation of the adjusting screw rod. 6. The gut holding and positioning structure of a gut stretching machine according to claim 5, wherein a seal cap is provided at an outer end of the second working hole. Construction.