Horizontal conveying line for pre-filling needles

Abstract

The utility model relates to a pre-filling needle horizontal conveying line in the technical field of vaccine packaging. The pre-filling needle horizontal conveying line comprises a belt pulley assembly, a photoelectric detection assembly, a driven round belt, a linkage round belt, a driving round belt, an adjusting assembly, a guide rail assembly, a feeding fence, a connecting fence, a discharging fence, a power assembly and a positioning assembly. The belt pulley assembly is used for transmission; the driving round belt drives the linkage round belt to move; the linkage round belt drives the driven round belt to move; the photoelectric detection assembly is used for detecting the pre-filling needle on the conveying belt; the adjusting assembly is used for adjusting the width of the conveying line. The effect that the whole conveying line is driven by one set of driving assembly is achieved, and friction between a belt and a pre-filling needle caused by errors of independent movement of multiple driving assemblies is avoided; the size of the conveying belt is greatly reduced, the conveying speed is greatly increased, and the width of the conveying belt can be adjusted through the adjusting assembly.

Description

Technical Field

[0001] This utility model relates to the field of vaccine packaging technology, and in particular to a pre-filled needle horizontal conveyor line. Background Technology

[0002] Injectable drugs are pharmaceutical preparations pre-filled into syringes with an injectable solution. When used, the packaging can be removed directly, and the syringe can be used for injection. One step in the production of injectable drugs involves transporting pre-filled syringes (containing the injectable solution but without the plunger) and the plunger separately via a delivery device to a location. The plunger is then inserted into the pre-filled syringe, and subsequently, a screw-operated device is used to install the plunger into the pre-filled syringe using a combination of rotation and pressure. Vaccine packaging follows this similar format.

[0003] In existing technologies, the conveying of pre-filled needles in spinning, labeling, and buffer production lines typically involves feeding the pre-filled needles into the feeding mechanism, where they first slide down between the first and second conveyor belts. At this point, the needle barrel is positioned between the first and second synchronous belts, and the barrel flange is located between the first and second top plates. The two synchronous belts clamp the pre-filled needle material and convey it upwards, ultimately transporting it to the discharge mechanism, where it slides down along the tracks between two discharge rails to the next station. However, this technical solution is too bulky and can only be used for lifting, not horizontal conveying. This problem arises because the synchronous belts and pulleys occupy a significant amount of space. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model proposes a pre-filled needle horizontal conveyor line. The technical solution of this utility model is implemented as follows:

[0005] This utility model discloses a pre-filled needle horizontal conveyor line, which includes a pulley assembly, a photoelectric detection assembly, a driven circular belt, a linked circular belt, a driving circular belt, an adjustment assembly, a guide rail assembly, a feed gate, a connecting gate, a discharge gate, a power assembly, and a positioning assembly;

[0006] The power assembly is used to drive the two active circular belts to move.

[0007] The active circular belt is wound around the feed grid, the linked circular belt is wound around the connecting grid, and the driven circular belt is wound around the discharge grid.

[0008] Both ends of the feed fence, both ends of the connecting fence, and both ends of the discharge fence are provided with pulley assemblies for transmission.

[0009] The active circular belt drives the linked circular belt to move; the linked circular belt drives the driven circular belt to move.

[0010] The photoelectric detection component is used to detect the pre-charge pins on the feed gate, the connecting gate, and the discharge gate;

[0011] The positioning component is disposed on the side of the feed fence and located below the feed fence;

[0012] The adjustment component is mounted on at least one of the positioning components;

[0013] The pre-filled needle horizontal conveyor line includes a fixed side A and an adjusting side;

[0014] The adjustment component and the positioning component are disposed on the adjustment side;

[0015] The positioning component is disposed on the guide rail assembly;

[0016] The adjustment component is used to adjust the width of the conveyor line.

[0017] Preferably, the power assembly includes a bevel gear reducer and a speed-regulating motor.

[0018] Preferably, the pulley assembly includes a hexagonal screw, a bearing cap, a pulley, a deep groove ball bearing, and a bearing base;

[0019] The deep groove ball bearing is fixed to the bearing base, the bearing cover is placed on the deep groove ball bearing, and the single-layer pulley is fixed to the deep groove ball bearing by the hexagonal screw.

[0020] Preferably, the pulley includes single-layer pulleys and double-layer pulleys;

[0021] Preferably, the pulley assemblies located at both ends of the connecting fence each include double-layer pulleys.

[0022] The photoelectric detection component includes a feed detection photoelectric sensor, an intermediate detection photoelectric sensor, and a discharge detection photoelectric sensor.

[0023] The feed detection photoelectric sensor is used to detect the pre-charge pins on the feed gate;

[0024] The intermediate detection photoelectric sensor is used to detect the pre-charged pins on the connecting fence;

[0025] The discharge detection photoelectric sensor is used to detect the pre-charge pins on the discharge gate.

[0026] Preferably, the guide rail assembly includes a linear guide rail and a guide rail mounting base;

[0027] The linear guide rail is mounted on the guide rail mounting base.

[0028] Preferably, the adjustment assembly includes a hand-tightening knob, a digital display, a thrust ball bearing, an adjusting screw, and an adjusting mounting base;

[0029] The hand-tightening knob transmits torque to the adjusting screw via the thrust ball bearing;

[0030] The adjusting screw is mounted on the adjusting mounting base;

[0031] The adjusting fixing seat is connected to the positioning component;

[0032] The adjusting screw is used to drive the adjusting side to move, thereby adjusting the width of the conveyor line.

[0033] Preferably, the positioning seat assembly includes a slider positioning seat and an adjusting positioning seat;

[0034] The adjustment side includes a fence support plate;

[0035] The adjusting positioning seat is fixed to the fence support plate; the slider positioning seat is mounted on the guide rail assembly;

[0036] The positioning seat assembly connected to the adjustment component: the adjustment positioning seat is connected to the slider positioning seat;

[0037] The adjusting screw drives the adjusting positioning seat and the slider positioning seat to slide on the guide rail assembly, thereby causing the adjusting side to move horizontally relative to the fixed side.

[0038] The operating steps of this utility model are as follows:

[0039] S1, adjust the width of the conveyor belt by adjusting the component until it fits the pre-filled needle to be conveyed;

[0040] S2, the power unit starts, driving the active round belt, the linkage round belt and the driven round belt to move;

[0041] S3, Pre-charge needle enters the feed gate: Enters the conveyor belt inlet, and the feed detection photoelectric sensor is in place;

[0042] S4, the pre-charge needle enters the connecting fence: it enters the middle section of the conveyor belt; the intermediate photoelectric detection is in place;

[0043] S5, the pre-charge needle enters the discharge gate: it enters the conveyor belt outlet; the discharge detection photoelectric sensor is in place;

[0044] S6, no signal from the photoelectric detection component, all pre-charge needles have been delivered;

[0045] S7, the system idles for one conveying cycle;

[0046] S8, delivery complete.

[0047] Compared to traditional technologies, this invention achieves the effect of driving the entire conveyor line with a single motor, avoiding the friction between the belt and pre-filling needle caused by the error of multiple motors moving independently; the size of the conveyor belt is greatly reduced, the conveying speed is greatly increased, and the width of the conveyor belt can be adjusted by the adjustment component. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0050] Figure 1 This is an exploded view of the equiaxed structure of an embodiment of the present utility model; it serves as the drawing that best illustrates the technical solution of the present utility model. Figure 1 It was also designated as an abstract figure;

[0051] Figure 2 for Figure 1 An enlarged view of the structure of the adjustment component in the embodiment shown;

[0052] Figure 3 for Figure 1 The flowchart of the embodiment shown.

[0053] In the above figures, the figure numbers indicate the following:

[0054] 1. Hexagonal head screw; 2. Bearing cap; 3. Single-layer pulley; 4. Deep groove ball bearing; 5. Bearing base; 6. Feed detection photoelectric sensor; 7. Driven circular belt; 8. Linkage circular belt; 9. Double-layer pulley; 10. Intermediate detection photoelectric sensor; 11. Driven circular belt; 12. Hand-tightening knob; 13. Digital display; 14. Thrust ball bearing; 15. Adjusting screw; 16. Linear guide rail; 17. Guide rail mounting base; 18. Feed gate; 19. Connecting gate; 20. Discharge gate; 21. Conical gear reducer; 22. Speed-regulating motor; 23. Slider positioning seat; 24. Adjusting positioning seat; 25. Discharge detection photoelectric sensor; 26. Adjusting positioning seat; 27. Gate support plate; A. Fixed side; B. Adjusting side. Detailed Implementation

[0055] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0056] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used in the detailed description is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms “comprising” and “having” and any variations thereof in the specification, claims and foregoing description of the invention are intended to cover non-exclusive inclusion.

[0057] In the description of the specific embodiments of this utility model, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly defined.

[0058] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this invention can be combined with other embodiments.

[0059] In the description of this utility model embodiment, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this utility model, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0060] In the existing technology, the pre-charge needle is conveyed by a combination of a three-phase asynchronous motor, a synchronous pulley, and a synchronous belt. After the pre-charge needle enters the lifting conveyor belt, two motors drive two independent synchronous belts to lift the pre-charge needle. If the length of the conveyor line needs to be increased later, the length of the synchronous belt needs to be increased, and the motor load also increases accordingly.

[0061] To address the aforementioned problems, this utility model proposes a technical solution.

[0062] The embodiments of the present invention will be described in more detail below through examples. It should be noted that the embodiments of the present invention are not limited to these examples.

[0063] In one specific embodiment, such as Figure 1 and Figure 2 As shown, a pre-filled needle horizontal conveyor line includes a pulley assembly, a photoelectric detection assembly, a driven circular belt 7, a linked circular belt 8, a driving circular belt 11, an adjustment assembly, a guide rail assembly, a feed gate 18, a connecting gate 19, a discharge gate 20, a power assembly, and a positioning assembly.

[0064] The power unit is used to drive the movement of the two active circular belts 11.

[0065] The active circular belt 11 is wound around the feed grid 18, the driving circular belt 8 is wound around the connecting grid 19, and the driven circular belt 7 is wound around the discharge grid 20.

[0066] Both ends of the feed fence 18, both ends of the connecting fence 19, and both ends of the discharge fence 20 are equipped with pulley assemblies for transmission.

[0067] The active circular belt 11 drives the linkage circular belt 8 to move; the linkage circular belt 8 drives the driven circular belt 7 to move.

[0068] The photoelectric detection component is used to detect the pre-charge pins on the feed gate 18, the connecting gate 19, and the discharge gate.

[0069] The positioning component is located on the side of the feed gate 18 and below the feed gate 18.

[0070] The adjustment component is mounted on at least one positioning component.

[0071] In this embodiment, the pre-filled needle horizontal conveyor line includes a fixed side A and an adjustable side B.

[0072] The adjustment component and the positioning component are located on the adjustment side B.

[0073] The positioning component is mounted on the guide rail assembly.

[0074] The adjustment component is used to adjust the width of the conveyor line.

[0075] In this embodiment, the power assembly includes a bevel gear reducer 21 and a speed-regulating motor 22.

[0076] In this embodiment, the pulley assembly includes a hexagonal screw 1, a bearing cap 2, a pulley, a deep groove ball bearing 4, and a bearing base 5.

[0077] The deep groove ball bearing 4 is fixed on the bearing base 5, the bearing cover 2 is placed on the deep groove ball bearing 4, and the pulley is fixed on the deep groove ball bearing 4 by the hexagonal screw 1.

[0078] In this embodiment, the pulleys include a single-layer pulley 3 and a double-layer pulley 9.

[0079] In this embodiment, the pulley assemblies located at both ends of the connecting fence 19 each include double-layer pulleys 9.

[0080] The photoelectric detection assembly includes a feed detection photoelectric sensor 6, an intermediate detection photoelectric sensor 10, and a discharge detection photoelectric sensor 25.

[0081] The feed detection photoelectric sensor 6 is used to detect the pre-charge pins on the feed gate 18.

[0082] The intermediate detection photoelectric sensor 10 is used to detect the pre-charge pins on the connecting fence 19.

[0083] The discharge detection photoelectric sensor 25 is used to detect the pre-charge pins on the discharge gate 20.

[0084] In this embodiment, the guide rail assembly includes a linear guide rail 16 and a guide rail mounting base 17.

[0085] The linear guide 16 is mounted on the guide rail mounting base 17.

[0086] In this embodiment, the adjustment assembly includes a hand-tightening knob 12, a digital display 13, a thrust ball bearing 14, an adjustment screw 15, and an adjustment fixing seat.

[0087] The hand-tightening knob 12 transmits torque to the adjusting screw 15 through the thrust ball bearing 14.

[0088] Adjusting screw 15 is mounted on adjusting base 26;

[0089] Adjust the positioning assembly of the mounting bracket 26;

[0090] The adjusting screw 15 is used to drive the adjustment side B to move, thereby adjusting the width of the conveyor line.

[0091] In this embodiment, the positioning seat assembly includes a slider positioning seat 23 and an adjusting positioning seat 24.

[0092] Adjustment side B includes fence support plate 27;

[0093] The adjusting positioning seat 24 is fixed to the fence support plate 27; the slider positioning seat 23 is installed on the guide rail assembly;

[0094] In the positioning seat assembly connected to the adjustment component: the adjustment positioning seat 26 is connected to the slider positioning seat 23;

[0095] The adjusting screw 15 drives the adjusting positioning seat 26 to move, and the adjusting positioning seat 26 drives the slider positioning seat 23 to slide on the guide rail assembly, thereby driving the adjusting positioning seat 24 to move. The adjusting positioning seat 24 is connected to the fence support plate 27, so the fence support plate 27 also moves. This drives the horizontal movement of the entire conveyor line on the adjusting side B, while the fixed side A is fixed to the support foot by screws. This realizes the adjustment of the conveyor belt spacing, thereby adapting to pre-filled needles of different diameters.

[0096] In this embodiment, the adjustment screw 15 is rotated by turning the hand knob 12 on the adjustment component. In conjunction with the thrust ball bearing 14, all the adjustment positioning seats 24 on one side of the conveyor line are equipped with linear guide rails 16. By adjusting the cooperation of the positioning seat 24, the slider positioning seat 23, the linear guide rail 16, and the guide rail mounting seat 17, the width of the conveyor belt can be adjusted to accommodate pre-filled needles of different diameters.

[0097] In this embodiment, the adjustment mechanism and linear guide rail are both located on the adjustment side B, while the fixed side A is directly locked to the support foot. The hand-tightening knob 12 and the adjustment screw 15 are coaxially fixed, and turning the knob drives the adjustment screw to rotate. The adjustment screw 15 and the adjustment positioning seat 26 are relatively fixed by threads. The rotation of the adjustment screw 15 realizes the horizontal movement of the adjustment positioning seat 26. The slider positioning seat 23 is locked to the adjustment positioning seat 26 by screws, and also locked to the linear guide rail 16. The adjustment positioning seat 24 is locked to the slider positioning seat 23 by screws, and also locked to the fence support plate 27 by screws.

[0098] The conveyor belt referred to in this utility model is an integrated structure for conveying pre-filled needles, consisting of a driven circular belt 7, a linked circular belt 8, a driving circular belt 11, a feed fence 18, a connecting fence 19, and a discharge fence 20.

[0099] This embodiment implements a single variable-speed motor 22 to drive the entire conveyor line. The total dimensions of the conveyor belt are 1560mm long * 430mm wide * 1049mm high, and the weight is 65KG. Compared with the original pre-filled needle buffer station, the width is reduced by 100mm and the weight is reduced by 30%. For pre-filled needles with diameters of 6.85mm, 8.15mm, 10.85mm, and 14.45mm, the maximum conveying speed can reach 3000, 2600, 1900, and 1400 needles per minute, respectively. The width of the conveyor belt can be adjusted by manually turning knob 12, and the digital display 13 on the adjustment component can display the width adjusted by manually turning knob 12. A speed-regulating motor 22, through an arc bevel gear reducer 21, achieves one input and two outputs, so that all the round belts on the entire conveyor belt move synchronously, avoiding the friction between the belt and the pre-filling needles caused by the error of multiple motors moving independently. If the conveying speed needs to be increased later, the motor and reducer can be replaced. If the length of the conveyor belt needs to be increased later, it can be achieved by increasing the length of the driving round belt 11, the driven round belt 7, the feed gate 18, and the discharge gate 20. This utility model uses round belts to convey pre-filling needles. Due to the material properties of the round belt itself, a belt tensioning mechanism is not required. The speed-regulating motor 22 drives the conveyor belt to transport the pre-filling needles. The bevel gear reducer 21 outputs to two drive belts. The pulley assembly consists of a fixed bearing base 5, a deep groove ball bearing 4, a single-layer pulley 3 or a double-layer pulley 9, a bearing cover 2, and an external hexagonal screw 1. It is small in size, easy to clean, has a high rated speed, a low coefficient of friction, and a low motor load. Due to the excessive length of the conveyor belt, a mechanism of drive round belt 11-linkage round belt 8-driven round belt 7 is adopted to reduce costs. The two pulley assemblies of the connecting fence 19 adopt double-layer pulleys 9. The upper layer connects the drive round belt 11 and the driven round belt 7, and the lower layer connects the two double-layer pulleys 9. Since there is no round belt on the upper layer of the connecting fence 19, the two connecting fences 19 are staggered, so that the round belt contacts the pre-charge needle flange at any position of the entire conveyor belt.

[0100] The specific usage method of this embodiment is as follows: Figure 3 As shown, first determine the operating parameters of the conveying system, such as the specifications of the pre-filled needles and the conveying speed. After the parameters are determined, proceed to the following steps:

[0101] S1, adjust the width of the conveyor belt by adjusting the component until it fits the pre-filled needle to be conveyed;

[0102] S2, the power unit is started, driving the active round belt 11, the linkage round belt 8 and the driven round belt 7 to move;

[0103] S3, the pre-charge needle enters the feed gate 18: it enters the conveyor belt inlet, and the feed detection photoelectric sensor 6 detects that it is in place;

[0104] S4, the pre-charge needle enters the connecting fence 19: it enters the middle section of the conveyor belt; the intermediate detection photoelectric sensor 10 detects that it is in place;

[0105] S5, the pre-charge needle enters the discharge gate 20: enters the conveyor belt outlet; the discharge detection photoelectric sensor 25 detects the material in place;

[0106] S6, no signal from the photoelectric detection component, all pre-charge needles have been delivered;

[0107] S7, the system idles for one conveying cycle;

[0108] S8, delivery complete.

[0109] In this embodiment, after the speed-regulating motor 22 starts, it drives all the round belts to start conveying synchronously; the pre-filled needle enters the inlet of the conveyor belt, and the feed detection photoelectric 6 detects that it is in place; the pre-filled needle is conveyed towards the outlet of the conveyor belt and enters the intermediate connecting fence 19. The two intermediate connecting fences 19 are staggered to ensure that the round belt drives the pre-filled needle to be conveyed at any position of the entire conveyor line; the intermediate detection photoelectric 10 plays the role of bottle blockage detection and counting, and the discharge detection photoelectric 25 can detect that the pre-filled needle leaves the conveyor belt; the width of the conveyor belt can be adjusted by turning the knob 12 by hand, so that the conveyor belt can adapt to all pre-filled needles with diameter specifications of 6.85mm-14.45mm.

[0110] It should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pre-charged needle level delivery line, characterized by, The device comprises a belt wheel assembly, a photoelectric detection assembly, a driven round belt, a linkage round belt, a driving round belt, an adjusting assembly, a guide rail assembly, an inlet fence, a connecting fence, an outlet fence, a power assembly and a positioning assembly. The power assembly is used to drive the movement of the two driving round belts. The driving round belt is arranged around the inlet fence, the linkage round belt is arranged around the connecting fence and the driven round belt is arranged around the outlet fence. Both ends of the inlet fence, both ends of the connecting fence and both ends of the outlet fence are provided with belt wheel assemblies for transmission. The driving round belt drives the movement of the linkage round belt and the linkage round belt drives the movement of the driven round belt. The photoelectric detection assembly is used to detect pre-filled needles on the inlet fence, the connecting fence and the outlet fence. The positioning assembly is arranged on the side of the inlet fence and below the inlet fence. The adjusting assembly is installed on at least one positioning assembly. The pre-filled needle horizontal conveying line comprises a fixed side and an adjusting side. The adjusting assembly and the positioning assembly are arranged on the adjusting side. The positioning assembly is arranged on the guide rail assembly. The adjusting assembly is used to adjust the width of the conveying line.

2. The pre-charged needle level delivery line of claim 1, wherein, The power assembly comprises an arc bevel gear reducer and a speed-regulating motor.

3. The pre-charged needle level delivery line of claim 1, wherein, The belt wheel assembly comprises a hexagonal screw, a bearing cover, a pulley, a deep groove ball bearing and a bearing base. The pulley comprises a single-layer pulley and a double-layer pulley. The deep groove ball bearing is fixed on the bearing base, the bearing cover is arranged on the deep groove ball bearing and the single-layer pulley is fixed on the deep groove ball bearing through the hexagonal screw.

4. The pre-charged needle level delivery line of claim 3, wherein, The belt wheel assemblies arranged at both ends of the connecting fence each comprise a double-layer pulley.

5. The pre-charged needle level delivery line of claim 4, wherein, The photoelectric detection assembly comprises an inlet detection photoelectric cell, an intermediate detection photoelectric cell and an outlet detection photoelectric cell. The inlet detection photoelectric cell is used to detect pre-filled needles on the inlet fence. The intermediate detection photoelectric cell is used to detect pre-filled needles on the connecting fence. The outlet detection photoelectric cell is used to detect pre-filled needles on the outlet fence.

6. The pre-charged needle level delivery line of claim 5, wherein, The guide rail assembly comprises a linear guide rail and a guide rail mounting base. The linear guide rail is arranged on the guide rail mounting base.

7. The pre-charged needle level delivery line of claim 6, wherein, The adjusting assembly comprises a hand screw knob, a digital display meter, a thrust ball bearing, an adjusting screw rod and an adjusting fixing base. The hand screw knob transmits the torsion to the adjusting screw rod through the thrust ball bearing. The adjusting screw rod is arranged on the adjusting fixing base. The adjusting fixing base is connected to the positioning assembly. The adjusting screw rod is used to drive the movement of the adjusting side to adjust the width of the conveying line.

8. The pre-charged needle level delivery line of claim 7, wherein, The positioning assembly comprises a slider positioning base and an adjusting positioning base. The adjusting side comprises a fence support plate. The adjusting positioning base is fixed on the fence support plate and the slider positioning base is installed on the guide rail assembly. The positioning assembly connected to the adjusting assembly: the adjusting positioning base is connected to the slider positioning base. The adjusting screw rod drives the adjusting positioning base and the slider positioning base to slide on the guide rail assembly, thereby driving the horizontal movement of the adjusting side relative to the fixed side.

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