Air nozzle with yarn guide structure

Abstract

The utility model relates to a yarn channel structure of air nozzle, and the structure includes two fixed bases, a plurality of yarn channel seats, a plurality of yarn grooves, a plurality of air inlet channels, two linkage bases, a plurality of sliding grooves, a plurality of linkage positioning pieces, a plurality of yarn channel upper covers, two pressing pieces, a plurality of elastic components, a cover body piece, a rotating shaft and at least one cam part. By the above structure, the plurality of yarn channel seats are fixed in the fixed base and the linkage base, are stably combined with the air inlet channel and are communicated, only one action of rotating the cover body piece is needed, the cam part abuts against the fixed base or the pressing piece, the linkage base is displaced through the sliding groove and the linkage positioning piece driven by the rotating shaft, the yarn channel upper cover is moved above the yarn groove to convert the opening or shielding action, and the yarn channel upper cover is tightly combined with the yarn groove by the elastic component and the pressing piece when shielding to avoid airflow dissipation.

Description

[Technical Field]

[0001] This utility model provides a yarn channel structure for an air nozzle that is simple to operate, has a simple assembly process, low risk of human error, and a tight and stable channel seal. [Background Technology]

[0002] In textile processing, especially in areas where multiple yarns need to be guided simultaneously, such as warping, pre-weaving treatment, covering, or false twisting, multi-channel yarn guide air nozzles are commonly used to improve yarn guiding stability and processing efficiency. These devices guide the yarn stably along the channel direction using directional airflow within the channels, preventing lateral displacement, tangling, or skipping within the channels. Multi-yarn guide nozzles from relevant manufacturers are a representative design, featuring multiple independent and parallel channel-shaped channels, each with a corresponding air guiding structure to blow air along the yarn's extension direction, stabilizing yarn tension and position.

[0003] To ensure accurate guidance of each yarn, the nozzles are designed with high precision in mind. These products typically employ a multi-point locking mechanism to assemble the entire nozzle onto the machine or modular structure. Numerous locking mechanisms, mostly manually inserted or press-fitted, are used to distribute vibrations and stresses generated during airflow and prevent structural loosening due to prolonged operation. Furthermore, this design helps improve the alignment of the channels after assembly, ensuring that multiple yarns can stably pass through their respective channels during high-speed operation.

[0004] The above-mentioned multi-channel yarn guide air nozzle has the following problems and deficiencies that need to be improved during use:

[0005] First, due to the large number of snap-fit ​​components, when routine cleaning, yarn replacement, or fault repair is required, all fixing points of the entire nozzle must be removed first, which is a cumbersome and time-consuming process. This can easily lead to a decrease in production line efficiency in areas that require frequent operation.

[0006] Secondly, due to the complicated operating procedures, especially when changing yarn or performing daily cleaning, if all disassembly and reassembly steps are not completed in sequence, human negligence may easily lead to assembly errors or poor sealing, further posing industrial safety risks.

[0007] Third, although most existing designs allow for the replacement of some parts, the overall structure of the clips and channels is highly integrated, so in practice, the entire set still needs to be replaced, resulting in high maintenance costs. [Utility Model Content]

[0008] The main purpose of this utility model is to replace the complex buckle mechanism with a single opening action by utilizing the design of the cover body, the linkage seat and the upper cover of the yarn channel, thereby simplifying operation and avoiding human-caused industrial accidents.

[0009] Another main objective of this utility model is to utilize the design of the fixed seat, the linkage seat and the pressing component, to fix the structure around the yarn channel seat and use the pressing component to assist in sealing, thereby simplifying the disassembly and assembly process and improving the sealing performance of the channel.

[0010] To achieve the objective, the utility model comprises: two fixed seats, several yarn channel seats, several yarn grooves, several air intake channels, two linkage seats, two sliding grooves, several linkage positioning members, several yarn channel covers, two pressing members, two elastic components, a cover body, a rotating shaft, and at least one cam portion. Each yarn channel seat is arranged side by side between the fixed seats. The yarn grooves are formed on each yarn channel seat. Each air intake channel is formed in each yarn channel seat and communicates with the yarn groove. Each linkage seat is slidably disposed on both sides of each fixed seat and located at the two ends of each yarn groove. The sliding grooves are formed at both ends of the linkage seats. Each linkage positioning member is disposed on each fixed seat via the sliding groove. Each yarn channel cover moves synchronously with the linkage seat. Each pressing member is disposed above each fixed seat. Each elastic component is disposed in each fixed seat and connected at one end to each pressing member. The cover body is pivotally mounted on one of the fixed seats through the rotating shaft, and the cam portion is formed on the cover body and located on one side of the rotating shaft.

[0011] When the user uses this utility model as a multi-channel yarn guide air nozzle, multiple yarn channel seats are fixed inside by the fixed seat and the linkage seat to be stably connected and connected with the air inlet channel. After the yarn is placed into the yarn groove, only one action is needed to rotate the cover body to make the cam part abut against the fixed seat or the pressing part. Then, the linkage seat is moved through the sliding groove and the linkage positioning part by the drive of the rotating shaft, so that the yarn channel cover moves above the yarn groove to switch between opening and closing actions. When closing, the elastic component and the pressing part are used at the same time to make the yarn channel cover and the yarn groove tightly connected to prevent the airflow from escaping.

[0012] By employing the above-mentioned technology, the problems of cumbersome assembly steps, high risk of human error, and reliance on multiple points of snap-fit ​​for the tightness of the channel in multi-channel yarn guide air nozzles can be overcome, thus achieving the aforementioned advantages. [Attached Image Description]

[0013] Figure 1 This is a perspective view of the first preferred embodiment of the present invention.

[0014] Figure 2 This is an exploded perspective view of the first preferred embodiment of the present invention.

[0015] Figure 3 This is the first preferred embodiment of the present utility model. Figure 1 Sectional view along line AA.

[0016] Figure 4 This is a schematic diagram of the opening of the cover in the first preferred embodiment of the present invention.

[0017] Figure 5 This is a schematic diagram of the linkage of the first preferred embodiment of the present invention.

[0018] Figure 6 This is a schematic diagram illustrating the first preferred embodiment of the present invention.

[0019] Figure 7 This is a schematic diagram of the pressing process of the first preferred embodiment of the present invention.

[0020] Figure 8 This is an exploded perspective view of the second preferred embodiment of the present invention.

[0021] Figure 9 This is a schematic diagram of the pressing process of the second preferred embodiment of the present invention.

[0022] Figure 10 This is an exploded view of the third preferred embodiment of the present invention.

[0023] Figure 11 This is a schematic diagram of the linkage of the third preferred embodiment of the present invention.

[0024] Symbol Explanation

[0025] Fixed base...1

[0026] Convex foot...11

[0027] Clamping surface...12

[0028] Receptacle...13

[0029] Oriented channel...131

[0030] Limiting components...14

[0031] Clamping urgent parts...15

[0032] 2.

[0033] Yarn groove...21

[0034] Intake passage...22

[0035] Guide groove section...23

[0036] Linkage...3

[0037] Sliding groove...31

[0038] Inclined section...311

[0039] Linkage positioning components...32

[0040] First junction...33

[0041] Second joint...34

[0042] Yarn cover...4

[0043] Pressed parts...5

[0044] Linkage...51

[0045] Adjustment section...511

[0046] Operations Department...512

[0047] docking section...52

[0048] Cover parts...6

[0049] Rotating shaft...61

[0050] Cam section...62

[0051] Buckle part...63

[0052] Resilient components...7

[0053] Positioning structure...8

[0054] Ribs...81

[0055] Trench...82

Detailed Implementation Methods

[0056] To achieve the above-mentioned objectives and effects, the technical means and structure adopted by this utility model are described in detail below with reference to the preferred embodiment of this utility model.

[0057] Please see Figures 1 to 3 The figure shown is a perspective view to line AA, which is a cross-sectional view of the first preferred embodiment of the present invention. It can be clearly seen from the figure that the present invention includes:

[0058] Two fixed seats 1;

[0059] Several yarn trays 2 are arranged side by side between each fixed base 1, and each has a yarn groove 21;

[0060] Several air intake channels 22 are formed in each of the yarn guide seats 2 and are connected to the yarn groove 21;

[0061] The two linkage seats 3 are slidably disposed on both sides of each fixed seat 1 and are respectively located at the two side ports of the yarn groove 21. Each linkage seat 3 has a sliding groove 31 at both ends.

[0062] Several linkage positioning elements 32 are disposed on each of the fixed seats 1 via the sliding groove 31;

[0063] Several yarn channel covers 4 are moved synchronously with each of the linkage seats 3 to cover or open the upper opening of the yarn channel 21.

[0064] Two pressing parts 5 are respectively disposed above each of the fixed seats 1 so that each yarn channel cover 4 can be tightly connected with the yarn groove 21;

[0065] Two elastic components 7 are respectively disposed in each of the fixed bases 1, and one end is connected to each of the pressing members 5;

[0066] A cover component 6 is pivotally mounted on one of the fixed seats 1 via a rotating shaft 61; and

[0067] At least one cam portion 62 is formed on the cover member 6 and located on one side of the rotating shaft 61, so as to abut the fixed seat 1 or the pressing member 5 when the cover member 6 rotates, and drive each of the linkage seats 3 through the rotating shaft 61.

[0068] The cover 6 has a snap-fit ​​part 63 on one side, and the pressing part 5 located on one side of the cover 6 has a mating part 52, which is engaged with the snap-fit ​​part 63.

[0069] Each of the fixed seats 1 has at least one clamping member 15, which passes through each of the yarn guide seats 2.

[0070] Each of the yarn guide seats 2 has a guide groove 23 on both sides, and each of the linkage seats 3 has a plurality of first connecting parts 33 on one side. Each of the first connecting parts 33 is correspondingly connected to the yarn guide cover 4. Each of the linkage seats 3 has at least one second connecting part 34 on one side, and the second connecting part 34 is correspondingly connected to the guide groove 23.

[0071] Each of the fixed seats 1 has at least one limiting member 14 to prevent each pressing member 5 from shifting.

[0072] In this example, each yarn channel seat 2 is a narrow and long cuboid structure. The side-by-side direction of each yarn channel seat 2 is defined as the front-back direction. The top surface of the yarn channel seat 2 has a U-shaped yarn groove 21 that runs through the left and right sides and faces upward. The air inlet channel 22 is located in the center of the yarn groove 21 and is connected downward to an air supply device.

[0073] In this embodiment, the fixing seat 1 is a convex block structure. The protruding feet 11 on the left and right sides are used to fix equipment such as air supply devices. The inner surfaces of the two fixing seats 1 opposite each other are clamping surfaces 12, which are used to clamp multiple yarn channel seats 2 in the front and rear. The fixing seat 1 has a receiving groove 13 for setting elastic components 7. The elastic component 7 is a tension spring sheet set in the upper and lower direction. One end is fixed in the receiving groove 13 and the other end is fixed on the pressing member 5 (in this embodiment, both ends are fixed with pins). The pressing member 5 is a wide flat cuboid structure set on the top surface of the fixing seat 1, and has a hole for connecting the limiting member 14. The limiting member 14 is a protruding post on the upper surface of the fixing seat 1. In this embodiment, two are used as an example. In addition, the fixing seat 1 and the yarn channel seat 2 each have at least one through hole for the clamping and tightening member 15 to pass through the two fixing seats 1 and all the yarn channel seats 2. The clamping and tightening member 15 is a semi-threaded screw with threads at the end. The middle section is smooth to facilitate the insertion of the yarn channel seat 2, and the end thread is used to lock the fixing seat 1.

[0074] Taking the L-shaped block structure as an example, the linkage seat 3 is combined with the left and right sides of the fixed seat 1 and located above the protruding foot 11. Specifically, it is locked using a linkage positioning part 32 in the form of a semi-threaded screw, and locked to the sliding groove 31 at both ends of the long side of the L-shaped linkage seat 3. The sliding groove 31 is an elongated hole. The rotating shaft 61 is set on the short side of the L-shaped linkage seat 3. The rotating shaft 61 is eccentrically pivoted on one side of the cover part 6. The cam part 62 is a protruding structure formed on the cover part 6 on one side of the rotating shaft 61. In this embodiment, two are set parallel to each other at both ends of the rotating shaft 61, but of course, only one can be set in the center. Through the above description, the structure of this technology can be understood. Based on the corresponding cooperation of this structure, advantages such as simple operation, simple assembly process, low risk of human error, and tight and stable groove can be achieved. A detailed explanation will be given below.

[0075] Please refer to the following at the same time. Figures 1 to 7The figure shown is a perspective view to a pressing schematic diagram of the first preferred embodiment of the present invention. As can be clearly seen from the figure when the above components are assembled, the multi-channel yarn guide air nozzle of the present invention is improved based on multiple independent yarn guide seats 2 arranged side by side. Each of them also has an independent air intake channel 22, which is not easy to interfere with each other or be contaminated together. When cleaning or replacement is required, it can be replaced individually, and the maintenance cost is low. In addition, the side-by-side arrangement of the yarn channel seats 2 facilitates the connection and clamping of the fixed seats 1 through the clamping and tightening members 15, so as to fix them in the front-to-back direction. At the same time, the linkage seat 3 is used to limit the movement in the left-to-right direction. That is, all the yarn channel seats 2 are fixed inside by the fixed seats 1 and the linkage seat 3, so as to connect and communicate with the air intake channel 22. The fixed seats 1 and the linkage seat 3 of this design are considered fixed structures for fixing the yarn channel seats 2. They are not affected by user operation (such as conventional operation of buckle mechanism) or vibration and will not shift. The setting accuracy and stability are high. Based on this design function, the number of clamping and tightening members 15 can be one or more. This embodiment takes two configurations on both sides of the air intake channel 22 as an example.

[0076] In actual use, first rotate the opening cover 6 to expose the yarn groove 21. During the rotation, only one action is needed to move the cover 6, so that the cam part 62 abuts against the fixed seat 1 or the pressing part 5. Since the pressing part 5 is located above the fixed seat 1, and the limiting part 14 on the fixed seat 1 is correspondingly inserted into the hole of the pressing part 5, and the fixed seat 1 is fixed to the equipment below, the cam part 62 does not push against the fixed seat 1 or the pressing part 5 and is not displaced. The cover 6 bears a backward stress due to the reaction force of the push. At this time, since the linkage seat 3 is movably set on the fixed seat 1 through the sliding groove 31 and the linkage positioning part 32, the reaction force borne by the cover 6 is transferred to the linkage seat 3 through the rotating shaft 61, so that the linkage seat 3 moves backward along the length direction of the sliding groove 31.

[0077] Next, since the linkage seat 3 has several first connecting parts 33 that can be connected to each yarn channel cover 4, the connection method can be a snap-fit, a hook connection, or a bolt-lock. In this embodiment, the first connecting part 33 in the shape of a protruding column is inserted into the round hole on the yarn channel cover 4 as an example. The yarn channel cover 4 is a cuboid structure with a length on the left and right sides and a width on the front and back that is slightly larger than the opening above the yarn groove 21. In other words, when the linkage seat 3 is locked to the fixing seat 1, it is simultaneously clamped and limited from both sides of the yarn channel cover 4, thereby simplifying the fixing materials and process. As the linkage seat 3 moves backward, the yarn channel cover 4 will move backward simultaneously, thereby opening the opening above the yarn groove 21, so that the yarn can be placed into the yarn groove 21. The connection between the second joint 34 and the guide groove 23 can help stabilize the displacement direction of the linkage seat 3. The second joint 34 can be a rib extending in the front-back direction or several convex pillars arranged side by side. In this embodiment, the second joint 34 is a convex pillar. The guide groove 23 is a groove corresponding to the second joint 34. The guide grooves 23 of each yarn seat 2 are connected to each other to form a track pattern. This can limit the linkage seat 3 to only perform horizontal displacement and also avoid the linkage positioning member 32 from bearing too much stress in the non-sliding direction, thereby improving the overall service life.

[0078] After the yarn is set, the upper opening of the yarn groove 21 can be closed again by simply reversing the operation. For the user, there is only one action: to pull the cover 6. When closing, the hook-type buckle 63 can be used to lock onto the slot-type docking part 52 on the pressing part 5 to fix the cover 6. The design of the buckle 63 and the docking part 52 not only strengthens the fixing effect of the cover 6, but also improves the operating feel. The impact sound of the buckle action reminds the user of the change in the fixed state. At this time, it usually means that the maintenance of the yarn groove 21 is completed, and the air can continue to flow through the yarn groove 21 through the air intake channel 22. Other action details will not be described in detail. Furthermore, when the yarn guide cover 4 closes the upper opening of the yarn groove 21, the pressing action of the pressing member 5 simultaneously assists in improving the tight connection between the yarn guide cover 4 and the yarn groove 21. Specifically, the elastic component 7 in the fixing seat 1 normally applies a downward pulling force to the pressing member 5, causing the pressing member 5 to press down. The left and right ends of the pressing member 5 directly abut against the upper surface of the short side of the L-shaped linkage seat 3. Therefore, under the influence of the downward pressure, the linkage seat 3 will move slightly downward, thereby driving the yarn guide cover 4 to press down tightly. Alternatively, if the linkage seat 3 cannot move downward, the downward pressure is transferred to the yarn guide cover 4, achieving the same effect. In addition, due to the design of the limiting member 14, the pressing member 5 itself can also prevent the pressing member 5 from deflecting in the horizontal direction during operation, and at the same time, prevent the pressing member 5 from affecting the operation of the yarn guide cover 4 or the cover member 6. Based on this design function, the number of limiting members 14 can also be one or more. This ensures that the yarn channel cover 4 can seal the top of the yarn groove 21, restricting the gas to move only along the extension direction of the yarn groove 21, preventing airflow from escaping, and achieving the purpose of controlling the directional movement of airflow, thereby indirectly improving the process quality. As for whether it is a bidirectional symmetrical airflow or a unidirectional guided airflow, other external designs are made according to the user's needs, which does not affect the design of this case.

[0079] Please refer to the following at the same time. Figure 8 and Figure 9The figure shows an exploded perspective view and a pressing schematic diagram of the second preferred embodiment of the present invention. As can be clearly seen from the figure, the main difference between this embodiment and the above embodiment is that the setting of the elastic component 7 is simplified and the stability of the pressing component 5 is improved. Therefore, each of the fixed bases 1 has a certain directional groove 131 for setting the elastic component 7. Each pressing component 5 has a connecting rod 51 on one side. The connecting rod 51 passes through the directional groove 131. The connecting rod 51 has an adjustment part 511 near the pressing component 5 and an operation part 512 away from the pressing component 5. In this embodiment, the connecting rod 51 is exemplified by a screw, with a semi-threaded screw being particularly preferred. The adjusting part 511 is the thread at the end of the connecting rod 51, and the operating part 512 is the screw head of the connecting rod 51. The inner diameter of the directional groove 131 is larger than the outer diameter of the elastic component 7, and the inner diameter of the elastic component 7 is larger than the outer diameter of the connecting rod 51, allowing the three components to be nested or threaded together. In this embodiment, the elastic component 7 is replaced by a compression spring. In this way, the depth of the adjusting part 511 locked in the pressing member 5 can be adjusted by rotating the operating part 512, thereby changing the basic distance between the pressing member 5 and the linkage seat 3. As for the elastic component 7, because it cannot be pushed at one end of the directional groove 131 due to the influence of the fixed seat 1, it applies the elastic force downward to the operating part 512 at the other end, causing the connecting rod 51 to be pushed downward by the elastic component 7, while simultaneously driving the pressing member 5 to press down on the linkage seat 3. In other words, although the overall movement of the elastic component 7 and the pressing component 5 remains unchanged, during assembly, the assembly is completed simply by placing the elastic component 7 into the directional groove 131 and locking the connecting rod 51 through the elastic component 7 to the pressing component 5. This not only simplifies the process and facilitates disassembly and assembly, but also increases the function of fine-tuning the pressing strength.

[0080] Please refer to the following at the same time. Figure 10 and Figure 11 The figure shows an exploded view and a linkage diagram of the third preferred embodiment of the present invention. As can be clearly seen from the figure, the main difference between this embodiment and the previous embodiments is that the movement quality of the linkage seat 3 is improved. An inclined portion 311 is provided on the sliding groove 31, and a positioning structure 8 is provided between each pressing member 5 and each linkage seat 3. The inclined portion 311 is defined by the angular change in the length direction of the sliding groove 31. The positioning structure 8 is a simple stop structure between the pressing member 5 and the linkage seat 3. In this embodiment, the rib 81 on the bottom surface of the pressing member 5 and the groove 82 on the upper surface of the linkage seat 3 are used as examples.

[0081] The design of the inclined portion 311 ensures that when the opening action of the cover 6 causes the linkage seat 3 to move, the linkage seat 3 will move obliquely upward. The upward displacement is minimal, only enough to separate the yarn guide cover 4 from the yarn guide seat 2. Since the yarn guide cover 4 does not need to press against the yarn guide seat 2 when the cover is open, and the contact between the yarn guide cover 4 and the yarn guide seat 2 is avoided when the linkage seat 3 moves, the moving resistance of the linkage seat 3 and the friction between the yarn guide cover 4 and the yarn guide seat 2 can be reduced. This not only reduces wear and tear and extends service life, but also improves the user's operating feel and reduces the force required to open the cover. In addition, because the linkage seat 3 moves obliquely upward, the guide groove portion 23 of the yarn guide seat 2 is also adjusted to an independent inclined groove style.

[0082] In addition, the positioning structure 8 is designed to assist the forward and backward displacement range and stopping position of the linkage seat 3. Since the cover part 6 is operated by the user, in order to avoid improper operation leading to insufficient or excessive displacement of the linkage seat 3, which would result in incomplete coverage or incomplete opening of the yarn cover 4, the positioning structure 8 provides a positioning feel. When the linkage seat 3 moves to the appropriate position, the rib 81 is inserted into the groove 82 to complete the engagement. Compared with a smooth surface, there will be a clear positioning feel, which reminds the user that the positioning structure 8 design requires the user to overcome the force required for the rib 81 to climb out of the groove 82 before excessive displacement occurs. Of course, the positioning structure 8 also has the same effect as the end face of the sliding groove 31 in limiting the stopping position of the yarn cover 4, further enhancing the sealing effect of the yarn cover 4.

[0083] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Therefore, any simple modifications and equivalent structural changes made based on the contents of the present utility model specification and drawings should also be included in the patent scope of the present utility model and are hereby stated.

Claims

1. A yarn channel structure for an air nozzle, characterized in that... It includes: Two fixed seats; Several yarn trays are arranged side by side between each fixed seat, and each has a yarn groove; Several air intake channels are formed in each of the yarn guide seats and are connected to the yarn groove; The two linkage seats are slidably disposed on both sides of each fixed seat and located at the two ends of the yarn groove, and each linkage seat has a sliding groove at both ends. Several linkage positioning components are disposed on each of the fixed seats via the sliding groove; Several yarn channel covers move synchronously with each of the linkage seats to cover or open the upper opening of the yarn channel; Two pressing parts are respectively disposed above each of the fixed seats so that each yarn channel cover can be tightly connected with the yarn groove; Two elastic components are respectively disposed in each of the fixed seats, and one end is connected to each of the pressing components; A cover component is pivotally mounted on one of the fixed seats via a rotating shaft; and At least one cam portion is formed on the cover member located on one side of the rotating shaft, so as to abut against the fixed seat or the pressing member when the cover member rotates, and drive each of the linkage seats through the rotating shaft.

2. The yarn channel structure of the air nozzle as described in claim 1, characterized in that... The cover has a snap-fit ​​part on one side, and the pressing part on the side of the cover has a mating part, which is engaged with the snap-fit ​​part.

3. The yarn path structure of the air nozzle as described in claim 1, characterized in that... Each of the fixed seats has at least one clamping member, which passes through each of the yarn guide seats.

4. The yarn path structure of the air nozzle as described in claim 1, characterized in that... Each of the yarn guide seats has a guide groove on both sides, and each of the linkage seats has a plurality of first connecting parts on one side, each of the first connecting parts being connected to the yarn guide cover, and each of the linkage seats has at least one second connecting part on one side, the second connecting part being connected to the guide groove.

5. The yarn path structure of the air nozzle as described in claim 1, characterized in that... Each of the fixed seats has a certain directional groove, which is used to install the elastic component, and each of the pressing members has a connecting rod on one side, which passes through the directional groove.

6. The yarn path structure of the air nozzle as described in claim 5, characterized in that... The connecting rod has an adjustment part at one end adjacent to the pressing member and an operating part at the other end away from the pressing member.

7. The yarn path structure of the air nozzle as described in claim 1, characterized in that... Each of the fixed seats has at least one limiting element to prevent each of the pressing elements from shifting.

8. The yarn path structure of the air nozzle as described in claim 1, characterized in that... The sliding groove has an inclined portion.

9. The yarn path structure of the air nozzle as described in claim 1, characterized in that... Each of the pressing components and each of the linkage seats has a positioning structure.

Images