Adjustable MT needle receiving cylinder

Abstract

The utility model discloses an adjustable MT needle receiving cylinder which comprises a frame seat, a pressing block, a movable block, a horizontal adjusting assembly and a vertical adjusting assembly, a fiber hole is formed in the movable block, and a guide hole is formed in the frame seat; the movable block and the frame base are assembled, and assembling gaps are reserved in the horizontal direction and the vertical direction. The pressing block and the frame seat are assembled and connected to jointly limit the movable block in the vertical direction; the horizontal adjusting assembly is assembled between the movable block and the frame base and can move in the vertical direction so that the movable block can move in the horizontal direction relative to the frame base. Wherein an assembly gap between the movable block and the frame seat in the horizontal direction provides a space for the movable block to move in the horizontal direction; the vertical adjusting assembly is assembled in the frame seat, located between the frame seat and the movable block and arranged to move in the horizontal direction so that the movable block can move in the vertical direction relative to the frame seat; wherein an assembly gap between the movable block and the frame seat in the vertical direction provides a space for the movable block to move in the vertical direction.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber communication technology, especially to the design of core components for MT ferrule injection molding, and specifically to an adjustable MT connector cylinder that can be used in precision injection molds for MT ferrules. Background Technology

[0002] With the rapid development of AI (Artificial Intelligence) technology, the demand for denser fiber optic communication is increasing. The demand for patch cords and optical modules based on high-precision MT (Mechanical Transfer) ferrules is also increasing. Multi-core MT ferrules are the core components, and how to improve the precision of MT ferrules is a necessary and important issue.

[0003] The MT connector cylinder is the core mold component for MT ferrule injection molding. At present, most manufacturers in the industry adopt a non-adjustable MT connector cylinder design. Because the position of the fiber hole relative to the two guide holes will always cause deviation during machining, the pass rate of MT connector cylinder manufacturing is not high, which also affects the accuracy and yield of MT ferrules. Utility Model Content

[0004] In view of this, this utility model proposes an adjustable MT connector cylinder to solve the problem of low pass rate of existing MT connector cylinders due to the positional deviation of the fiber hole relative to the two guide holes.

[0005] To solve the above problems, the present invention proposes the following technical solution:

[0006] An adjustable MT connector syringe includes a frame, a pressure block, a movable block, a horizontal adjustment component, and a vertical adjustment component. The movable block has a fiber hole, and the frame has a guide hole. The movable block (3) is assembled with the frame (1) and has an assembly gap reserved in the horizontal and vertical directions. The pressure block (2) is assembled with the frame (1) and together constitutes a limit for the movable block (3) in the vertical direction.

[0007] The horizontal adjustment assembly is fitted between the movable block and the frame and is configured to move vertically so that the movable block moves horizontally relative to the frame; wherein the horizontal fitting gap between the movable block and the frame provides space for the movable block to move horizontally.

[0008] The vertical adjustment assembly is assembled within the frame and located between the frame and the movable block, and is configured to move horizontally to allow the movable block to move vertically relative to the frame; wherein the vertical assembly gap between the movable block and the frame provides space for the vertical movement of the movable block.

[0009] Furthermore, the horizontal adjustment component includes a left adjustment block and a right adjustment block; the left and right sides of the movable block are respectively provided with a left groove and a right groove, the left groove and the right groove respectively providing space for the left adjustment block and the right adjustment block to move in the vertical direction; under the limiting action of the frame base: the downward movement of the left adjustment block can push the movable block to move to the right, and the downward movement of the right adjustment block can push the movable block to move to the left, so that the vertical movement of the horizontal adjustment component is converted into the horizontal movement of the movable block; the horizontal movement of the movable block causes the fiber hole to move in the X-axis direction relative to the guide hole.

[0010] Furthermore, both the left and right adjusting blocks are L-shaped blocks, each comprising a horizontal block and a vertical block. The vertical block of the left adjusting block is located in the left groove of the movable block and is limited by the left side wall of the frame. The vertical block of the right adjusting block is located in the right groove of the movable block and is limited by the right side wall of the frame. The inner surface of the vertical block of the left adjusting block engages with the left side wall of the frame with an inclined surface, enabling the movable block to move to the right when the left adjusting block moves downward. The inner surface of the vertical block of the right adjusting block engages with the right side wall of the frame with an inclined surface, enabling the movable block to move to the left when the right adjusting block moves downward.

[0011] Furthermore, the horizontal adjustment assembly also includes a first left adjustment member and a first right adjustment member mounted on the pressure block. By adjusting the first left adjustment member and the first right adjustment member, the left adjustment block and the right adjustment block can be driven to move downward, respectively.

[0012] Furthermore, the inner surface of the vertical block of the L-shaped block is an inclined surface relative to the vertical direction, so that the thickness of the vertical block becomes thinner from top to bottom. At the same time, the inner surfaces of the left and right side walls of the frame base also form inclined surfaces of the same angle to achieve the inclined surface fit.

[0013] Furthermore, the inner angle between the horizontal and vertical blocks of the L-shaped block is 91° to 95°.

[0014] Furthermore, the movable block has a lower groove; the vertical adjustment assembly includes a vertical adjustment block, which is assembled in the lower groove and located within the space jointly defined by the frame and the movable block; the upper end face of the vertical adjustment block engages with the top surface of the lower groove at an angle, thereby converting the left-right movement of the vertical adjustment block in the horizontal direction into the up-down movement of the movable block; the up-down movement of the movable block causes the fiber hole to move relative to the Y-axis direction of the guide hole.

[0015] Furthermore, the vertical adjustment assembly also includes a second left adjustment member and a second right adjustment member, which are respectively assembled on the left side wall and the right side wall of the frame. By adjusting the second left adjustment member and the second right adjustment member, the vertical adjustment block can be moved left and right, and the left and right movement of the vertical adjustment block can cause the movable block to move up and down.

[0016] Furthermore, the top surface of the vertical adjustment block is an inclined surface relative to the horizontal direction, so that the height of the vertical adjustment block decreases from left to right or from right to left. At the same time, the top surface of the lower groove also forms an inclined surface of the same angle to achieve the inclined surface fit.

[0017] Furthermore, the angle between the top surface of the vertical adjustment block and the horizontal direction is 1° to 5°.

[0018] The beneficial effects of this utility model are reflected in the following: The MT needle tube of this utility model sets the fiber hole on the movable block and the guide hole on the frame base. Then, the position of the movable block relative to the frame base in the X-axis direction and Y-axis direction can be adjusted by the horizontal adjustment component and the vertical adjustment component, respectively. This can realize the positional adjustment of the fiber hole and the guide hole, make up for the positional deviation of the fiber hole relative to the guide hole, and accurately realize the positional requirements of the fiber hole relative to the guide hole. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an adjustable MT connector cylinder according to an embodiment of the present invention.

[0020] Figure 2 This is an exploded view of the adjustable MT connector cylinder according to an embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the frame 1 of the adjustable MT needle tube according to an embodiment of the present invention.

[0022] Figure 4 This is a cross-sectional view of the frame 1 of the adjustable MT connector cylinder according to an embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of the pressure block 2 of the adjustable MT connector cylinder according to an embodiment of the present invention.

[0024] Figure 6 This is a schematic diagram of the movable block 3 of the adjustable MT needle tube according to an embodiment of the present invention.

[0025] Figure 7 This is a cross-sectional view of the movable block 3 of the adjustable MT needle cylinder according to an embodiment of the present invention.

[0026] Figure 8 This is a schematic diagram of the horizontal adjustment block of the adjustable MT needle cylinder according to an embodiment of the present invention.

[0027] Figure 9 This is a schematic diagram of the vertical adjustment block of the adjustable MT needle tube according to an embodiment of the present invention.

[0028] Figure 10 This is a cross-sectional view of the adjustable MT connector cylinder according to an embodiment of the present invention.

[0029] Figure 11 This is an internal structural diagram of the adjustable MT connector cylinder according to an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached drawings: 1-Frame base, 10-Guide hole, 11-Base, 12-Column, 13-Left side wall, 14-Right side wall, 15-First threaded hole, 16-Second threaded hole; 2-Pressure block, 20-Screw, 21-Third threaded hole, 22-Fourth threaded hole; 3-Moving block, 30-Fiber hole, 31-Left groove, 32-Right groove, 33-Lower groove, 34-Boss, 35-Sloping surface; 4-Horizontal adjustment component, 40-Sloping surface, 41-Left adjustment block, 42-Right adjustment block, 43, 44-Adjusting screws; 5-Vertical adjustment component, 50-Vertical adjustment block, 51, 52-Adjusting screws, 53-Left recessed hole, 54-Right recessed hole. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The embodiments provided are for illustrative purposes only and are not intended to be limiting in any way.

[0032] Furthermore, the spatial directional terms such as "upper," "lower," "left," "right," "top," and "bottom" used in the description of the technical solution of this utility model are for the convenience of describing the relative positional relationship between the components of the product, and do not mean that the product is only oriented in the direction shown in the figure. In actual use, as the product is oriented differently (e.g., rotated 90 degrees or other orientations), the spatial descriptions used to describe its orientation should also be interpreted in a similar manner. In addition, terms such as "first" and "second" are only used to distinguish components. It should be understood that these components should not be limited by such terms, and they do not in themselves mean that these components have the aforementioned ordinal numbers, nor do they represent the arrangement order of one component with another or the order of manufacturing methods.

[0033] For MT connector syringes, the position of the fiber optic holes relative to the guide holes typically needs to meet the following requirements: Establish a two-dimensional coordinate system with the midpoint of the line connecting the two guide holes as the origin, where the connecting line is the X-axis. Assuming there are i fiber optic holes, theoretically, these i holes should be evenly arranged in a row along the X-axis, and this row of holes should be symmetrically distributed about the Y-axis. In practice, for this positional requirement, the smaller the overall deviation, the better. However, in actual MT connector syringe products, the positional distribution (Xi, Yi) of the i fiber optic holes fluctuates. For example, the ideal position of the fiber optic holes in the Y-direction is 0, but in actual processing, the overall position may be slightly higher or lower, or individual holes may be slightly higher / lower; the ideal position of the fiber optic holes in the X-direction is symmetrically distributed about the Y-axis, but in actual processing, the overall position may be slightly to the left or right. The reasons for this positional deviation are multifaceted, primarily because the processing equipment cannot achieve the theoretical values ​​during processing. Factors such as the processing precision of the equipment, temperature fluctuations during processing, and material properties can all introduce unpredictable processing errors, making it difficult to fundamentally solve the problem at its source.

[0034] To address this issue, this invention proposes an adjustable MT connector cylinder. By setting the fiber hole on the movable block and the guide hole on the frame, the position of the movable block relative to the frame in the X-axis and Y-axis directions is adjusted by the horizontal adjustment component and the vertical adjustment component, respectively. This achieves positional adjustment of the fiber hole relative to the guide hole, solving the problem of low pass rate caused by machining deviation of the fiber hole relative to the two guide holes.

[0035] Please refer to Figure 1 and Figure 2 The adjustable MT syringe provided in this embodiment includes a frame 1, a pressure block 2, a movable block 3, a horizontal adjustment component 4, and a vertical adjustment component 5. The movable block 3 has a front-to-back symmetrical structure (preferably, also left-to-right symmetrical), with a row of fiber holes 30 on the upper part of the front and rear plates. The frame 1 also has a front-to-back symmetrical structure (preferably, also left-to-right symmetrical), with a guide hole 10 on each of the two columns at the front of the frame 1. The row of fiber holes 30 on the front plate of the movable block 3 and the pair of guide holes 10 at the front of the frame 1 should meet the aforementioned positional requirements. The fiber holes on the rear plate of the movable block and the guide holes at the rear of the frame 1 are redundant designs, mainly to facilitate the use of the MT syringe without distinguishing between front and rear directions. They are optional, but if present, they should also meet the aforementioned positional requirements.

[0036] refer to Figure 2 , Figure 3 and Figure 4The frame 1 includes: a base 11, four columns 12 protruding from the base 11, a left side wall 13 connecting the two left columns, and a right side wall 14 connecting the two right columns. Each column 12 has a stepped design forming a larger lower part and a smaller upper part. Each of the four columns 12 has a guide hole 10 on its smaller upper part and a first threaded hole 15 on the top surface of its larger lower part. The outer surfaces of the left side wall 13 and the right side wall 14 each have a recessed second threaded hole 16. Accommodation spaces are formed between the two front columns and between the two rear columns to accommodate the front and rear plates of the movable block 3.

[0037] refer to Figure 2 and Figure 5 The pressure block 2 has a roughly square outline when viewed from above. Four third threaded holes 21 are located at each of the four corners, while a fourth threaded hole 22 is located in the middle area of ​​each of the left and right sides. The portions of the two fourth threaded holes 22 are upward-protruding cross-shaped, while the portions of the four third threads 21 are recessed within the cross-shaped portions and protrude downwards. The pressure block 2 is assembled with the frame base 1 through the engagement of four screws 20 with the four third threaded holes 21 and the four first threaded holes 15 on the frame base 1.

[0038] refer to Figure 2 , Figure 6 and Figure 7 The front and rear plates of the movable block 3 are respectively assembled to the front receiving space formed by the two front columns of the frame base and the rear receiving space formed by the two rear columns. Each of the front and rear plates has a boss 34 at its lower part, which mates with the bottom of the receiving space of the frame base. Within the front receiving space, the front plate of the movable block 3 has a predetermined width of assembly gap between itself and the two left and right front columns of the frame base, serving as an adjustment gap for the horizontal movement of the movable block. Simultaneously, a predetermined width of assembly gap is also reserved between itself and the bottom of the front receiving space, serving as an adjustment gap for the vertical movement of the movable block, providing space for the movement of the movable plate 3. Preferably, the gap width does not exceed 5μm to prevent overflow during injection molding; deviations caused by positional machining are sufficiently compensated within a 5μm adjustment space.

[0039] Continue to refer to Figure 2 , Figure 6 and Figure 7 , Figure 7 It is along Figure 6 A sectional view obtained by the green section line in the middle. (See example...) Figure 6 The movable block 3 is H-shaped when viewed from the left or right side. The left and right sides of the H-shape are the front and rear plates mentioned above, with grooves formed at the top and bottom. For example... Figure 2The pressure block 2 is embedded in the upper groove of the H-shaped movable block 3 and assembled with the frame base 1; while the lower groove 33 provides space to accommodate the vertical adjustment component (details to follow). The movable block 3 has a left groove 31 and a right groove 32 on its left and right sides, respectively.

[0040] refer to Figure 2 , Figure 8 , Figure 10 and Figure 11 The horizontal adjustment component 4 includes two such as Figure 8 The horizontal adjustment blocks shown are designated as left adjustment block 41 and right adjustment block 42, respectively, and they have the same shape and structure. Figure 8 As shown, the horizontal adjusting block is L-shaped and includes a horizontal block and a vertical block. The vertical block is fitted into the left (right) groove of the movable block 3, and is limited by the left (right) side wall of the right frame base, that is, the inner surface of the vertical block contacts and engages with the inner surface of the left (right) side wall of the frame base; while the horizontal block engages with the top surface of the left (right) side wall of the frame base and leaves a certain adjustment gap. The horizontal adjusting block can move vertically up and down along the left (right) groove of the movable block under the action of the adjusting component. In a specific embodiment, the adjusting component is, for example, a screw, that is, the horizontal adjusting assembly 4 also includes two adjusting screws 43 and 44, such as... Figure 2 As shown, two adjusting screws 43 and 44 are respectively fitted into the two fourth threaded holes 22 of the pressure block 2, with the lower ends of the screws abutting against the upper surface of the horizontal adjusting block. When screw 43 (or 44) is turned downwards, downward pressure is applied to the left adjusting block 41 (or right adjusting block 42), causing the left adjusting block 41 (or right adjusting block 42) to move downwards. Figure 8 As shown, the inner surface of the vertical block of the horizontal adjusting block is an inclined plane 40 relative to the vertical direction, making the thickness of the vertical block thinner from top to bottom. This creates a predetermined angle greater than 90° (e.g., 91°~95°, 92° in the example) between the inner surfaces of the horizontal and vertical blocks, while the outer surface remains at 90°. Simultaneously, the inner surfaces of the left and right sidewalls of the frame 1 also form inclined planes of the same angle, achieving an inclined plane fit between the horizontal adjusting block and the left and right sidewalls of the frame. Thus, when the screw 43 is turned downwards and the screw 44 is turned upwards (or vice versa), causing the left adjusting block 41 (or right adjusting block 42) to move downwards, the inclined plane fit pushes the movable block 3 to move to the right (or left), thereby achieving left and right movement of the movable block 3 in the horizontal direction. This adjusts the X-axis position of the fiber hole 30 relative to its left and right guide holes 10, compensating for the X-axis deviation generated during fiber hole processing.

[0041] refer to Figure 2 and Figures 9 to 11The vertical adjustment assembly 5 includes a vertical adjustment block 50 and two adjusting screws 51 and 52 on the left and right sides. The left and right sides of the vertical adjustment block 50 are recessed to form a left recessed hole 53 and a right recessed hole 54, respectively. The two adjusting screws 51 and 52 are respectively fitted into two second threaded holes 16 on the left and right side walls of the frame base. The vertical adjustment block 50 is fitted into the lower groove 33 of the movable block 3, located within the space jointly restricted by the frame base 1 and the movable block 3. The two adjusting screws 51 and 52 pass through the left and right side walls of the frame base 1, respectively, and the inner ends of the screws enter the left recessed hole 53 and the right recessed hole 54, respectively, so as to abut against the left and right sides of the vertical adjustment block 50. When the adjusting screw 51 (or 52) is turned inward, the screw 51 (or 52) can push the vertical adjustment block 50 to the right (or left). The upper end surface of the vertical adjustment block 50 and the top surface of the lower groove 33 are engaged by an inclined surface, which can realize the conversion of the left and right movement of the vertical adjustment block in the horizontal direction into the up and down movement of the movable block. Specifically, the top surface of the vertical adjustment block 50 can be designed as an inclined plane relative to the horizontal direction, so that the height of the vertical adjustment block 50 gradually decreases from left to right or from right to left. Figure 9 As shown), with Figure 9 For example, this creates a predetermined angle greater than 90 degrees between the top surface and the left side of the vertical adjustment block (e.g., 91°~95°, 92° in the example); simultaneously, as Figure 7 As shown, the top surface of the lower groove 33 also forms a slope 35 at the same angle. Still using... Figure 9 For example, when screwing screw 52 inward (tightening) and screwing screw 51 outward (loosening) moves vertical adjusting block 50 to the left, vertical adjusting block 50 moves upward, pushing movable block 3 upward; conversely, when screwing screw 52 outward and screw 51 inward, vertical adjusting block 50 gradually moves downward, and movable block 3 moves downward accordingly. Thus, movable block 3 can move up and down in the vertical direction, thereby adjusting the Y-axis position of fiber hole 30 relative to its left and right guide holes 10, to compensate for the upward deviation in the Y-axis generated during fiber hole processing.

[0042] In this embodiment of the utility model, the forward / backward distance of the screws can be determined based on the parameters (such as thread parameters, pitch, etc.) of the adjusting screws 43, 44 and 51, 52 and the number of turns of their knobs (tightening or loosening), and the angle of the inclined plane. This allows for the determination of the distance the movable block 3 moves to the left / right and up / down, thus achieving precise adjustment.

[0043] like Figure 10In one exemplary embodiment, the angles of the mating inclined surfaces ① and ② between the left and right adjusting blocks in the X direction and the left and right side walls of the frame are both 92°, and the angle of the mating inclined surface ③ between the vertical adjusting block in the Y direction and the movable block is also 92°; all adjusting screws are national standard M1.4 fine thread with a standard pitch of 0.3mm (300um). In this example, it can be calculated that one turn of the thread (360°) corresponds to the adjusting screw moving forward / backward by 300um, and the corresponding adjusting block moves by 300um, which translates to a corresponding movement of the movable block of 300×tan92°≈0.182um.

[0044] In summary, this design can effectively amplify the movement conversion between X and Y, making it feasible for the entire row of fiber holes of the adjusting block to move in the X and Y directions relative to the two guide holes of the frame.

[0045] To move the active block 0.3µm to the right, the following operation can be performed:

[0046] Loosen the right adjusting screw 44 by approximately 0.3 / 0.182 ≈ 1.6 turns beforehand. The right adjusting screw 44 will move upward, and the right adjusting block 42 will be in a loose state. Then tighten the left adjusting screw 43 by 1.6 turns. The left adjusting screw 43 will move downward, pushing the left adjusting block 41 downward. This is achieved through the inclined surface cooperation between the left adjusting block 41 and the left side wall of the frame ① (see...). Figure 10 The downward movement of the left adjustment block 41 and the upward movement of the right adjustment block 42 are combined to convert the horizontal (X-direction) rightward movement of the movable block 3, achieving a rightward movement of 0.3µm. The leftward movement is similar, but the operation is reversed; the leftward pushing force on the movable block is... Figure 10 The inclined plane fit shown in Figure ② will not be described in detail here.

[0047] To move the active block upwards by 0.3µm, the following steps can be taken:

[0048] Loosen the left adjusting screw 51 by approximately 0.3 / 0.182 ≈ 1.6 turns. The left screw 51 will move to the right, loosening the vertical adjusting block 50. Then tighten the right adjusting screw 52 by 1.6 turns. The right screw 52 will move to the left, pushing the vertical adjusting block 50 to the left. Through the inclined plane engagement ③, the leftward movement of the vertical adjusting block is converted into an upward movement of the movable block in the Y direction, achieving an upward movement of 0.3µm. The downward movement is similar, but the operation is reversed; details will not be elaborated further.

[0049] Furthermore, it should be noted that when adjusting the X direction, the movable block will theoretically move in the Y direction, but the change in movement of the movable block in the Y direction is the result of two amplifications. For example, if the X adjusting screw is turned 1 turn, the movable block will move 300 × tan92° ≈ 0.182 μm in the X direction, which translates to a movement of 0.182 × tan92° ≈ 0.0001 μm in the Y direction, which is negligible.

[0050] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several equivalent substitutions or obvious modifications can be made without departing from the concept of the present invention, and all such modifications, with identical performance or use, should be considered within the protection scope of the present invention.

Claims

1. An adjustable MT connector cylinder, characterized in that: It includes a frame base (1), a pressure block (2), a movable block (3), a horizontal adjustment component (4), and a vertical adjustment component (5), wherein the movable block (3) is provided with a fiber hole (30), and the frame base (1) is provided with a guide hole (10); The movable block (3) is assembled with the frame base (1), and an assembly gap is reserved in the horizontal and vertical directions; the pressure block (2) is assembled and connected with the frame base (1) and together constitutes a limit on the movable block (3) in the vertical direction; The horizontal adjustment assembly is fitted between the movable block and the frame and is configured to move vertically so that the movable block moves horizontally relative to the frame; wherein the horizontal fitting gap between the movable block and the frame provides space for the movable block to move horizontally. The vertical adjustment assembly is assembled within the frame and located between the frame and the movable block, and is configured to move horizontally to allow the movable block to move vertically relative to the frame; wherein the vertical assembly gap between the movable block and the frame provides space for the vertical movement of the movable block.

2. The adjustable MT connector cylinder as described in claim 1, characterized in that: The horizontal adjustment component (4) includes a left adjustment block (41) and a right adjustment block (42); the left and right sides of the movable block (3) are respectively provided with a left groove (31) and a right groove (32), and the left groove and the right groove respectively provide space for the left adjustment block and the right adjustment block to move in the vertical direction; Under the limiting action of the frame: the downward movement of the left adjusting block can push the movable block to the right, and the downward movement of the right adjusting block can push the movable block to the left, so that the vertical movement of the horizontal adjusting component is converted into the horizontal movement of the movable block; the horizontal movement of the movable block causes the fiber hole to move relative to the X-axis direction of the guide hole.

3. The adjustable MT connector cylinder as described in claim 2, characterized in that: Both the left and right adjustment blocks are L-shaped blocks, each comprising a horizontal block and a vertical block. The vertical block of the left adjustment block is located in the left groove of the movable block and is limited by the left side wall of the frame. The vertical block of the right adjustment block is located in the right groove of the movable block and is limited by the right side wall of the frame. The inner side of the vertical block of the left adjustment block engages with the left side wall of the frame base at an angle, so that when the left adjustment block moves downward, it can push the movable block to move to the right; the inner side of the vertical block of the right adjustment block engages with the right side wall of the frame base at an angle, so that when the right adjustment block moves downward, it can push the movable block to move to the left.

4. The adjustable MT connector cylinder as described in claim 3, characterized in that: The horizontal adjustment assembly (4) further includes a first left adjustment member and a first right adjustment member assembled on the pressure block (2). By adjusting the first left adjustment member and the first right adjustment member, the left adjustment block and the right adjustment block can be driven to move downward respectively.

5. The adjustable MT connector cylinder as described in claim 3, characterized in that: The inner surface of the vertical block of the L-shaped block is an inclined surface relative to the vertical direction, so that the thickness of the vertical block becomes thinner from top to bottom. At the same time, the inner surfaces of the left and right side walls of the frame base also form inclined surfaces of the same angle to achieve the inclined surface fit.

6. The adjustable MT connector cylinder as described in claim 5, characterized in that: The inner angles of the horizontal and vertical blocks of the L-shaped block are 91° to 95°.

7. The adjustable MT contact pin barrel of claim 1, wherein: The movable block (3) has a lower groove (33); the vertical adjustment component (5) includes a vertical adjustment block (50), which is assembled in the lower groove and located in the space jointly restricted by the frame base (1) and the movable block; the upper end surface of the vertical adjustment block and the top surface of the lower groove are engaged by an inclined surface to realize the conversion of the left and right movement of the vertical adjustment block in the horizontal direction into the up and down movement of the movable block; the up and down movement of the movable block causes the fiber hole to move relative to the Y-axis direction of the guide hole.

8. The adjustable MT connector cylinder as described in claim 7, characterized in that: The vertical adjustment component (5) further includes a second left adjustment component and a second right adjustment component, which are respectively assembled on the left side wall and the right side wall of the frame. By adjusting the second left adjustment component and the second right adjustment component, the vertical adjustment block can be moved left and right. The left and right movement of the vertical adjustment block can cause the movable block to move up and down.

9. The adjustable MT contact pin barrel of claim 7, wherein: The top surface of the vertical adjustment block is an inclined plane relative to the horizontal direction, so that the height of the vertical adjustment block decreases from left to right or from right to left. At the same time, the top surface of the lower groove also forms an inclined plane of the same angle to achieve the inclined plane fit.

10. The adjustable MT connector cylinder as described in claim 9, characterized in that: The angle between the top surface of the vertical adjustment block and the horizontal direction is 1° to 5°.

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