Stable clamping type cap screwing machine

Abstract

The utility model discloses a stable clamping type cap screwing machine which comprises a machine cabinet, a conveying belt is fixedly installed on the upper surface of the machine cabinet, a cap screwing machine head is arranged above the machine cabinet, a cap screwing motor is fixedly installed on the upper surface of the cap screwing machine head, and a gear box is fixedly installed below the cap screwing motor and located in the cap screwing machine head. A driving gear is rotatably mounted in the center of the gearbox, four driven gears are connected to the outer portion of the driving gear in a meshed mode, the four driven gears are circumferentially distributed at equal intervals through driving gear dots, an output shaft of the cap screwing motor is fixedly connected with the driving gear, and the four driven gears are rotatably mounted in the transmission box. According to the cap screwing device, the screwing head and the cap body can make full contact through free adjustment of the distance, cap screwing gaps are avoided, the using effect that the cap body is stably clamped is achieved, the cap screwing quality and efficiency are effectively improved, the situation that cap screwing is not in place is avoided, the distance adjustment can be achieved through driving of the air cylinder, adjustment is convenient, and practicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of capping machines, in particular to a stable clamping type capping machine. Background Technique

[0002] The capping machine, also known as a bottle capping machine, a cap pressing machine or a cap locking machine, is a sealing device for plastic bottles and glass bottles. Its main function is to firmly fix the bottle cap on the neck of the bottle to ensure sealing and prevent leakage;

[0003] Capping machines play a crucial role in the bottling industry and are an important part of the bottling process. The design features of these machines include adjustable buffer turntables, as well as equipment for tightening and loosening bottle caps after the filling of plastic bottles and glass bottles (molded bottles or tubular bottles). Capping machines have a wide range of applications, including but not limited to the pharmaceutical, food, scientific education and other fields;

[0004] However, when the traditional capping machine is in use, the fixed clamping effect of its capping head is not good, and it cannot fully contact and clamp the side position of the cap body. Therefore, there may be an incomplete capping situation during capping, and it is not convenient to adjust the clamping size of the capping, resulting in certain limitations in use. For this reason, the utility model proposes a capping machine with a capping head that can be stably clamped for capping. Content of the Utility Model

[0005] The purpose of the utility model is to provide a stable clamping type capping machine to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A stable clamping type capping machine, including a cabinet, a conveyor belt is fixedly installed on the upper surface of the cabinet, a capping head is arranged above the cabinet, a capping motor is fixedly installed on the upper surface of the capping head, a gear box is fixedly installed inside the capping head below the capping motor, a driving gear is rotatably installed at the center position of the gear box, four driven gears are externally meshed with the driving gear, and the four driven gears are circumferentially distributed at equal intervals around the center point of the driving gear. The output shaft of the capping motor is fixedly connected with the driving gear. The four driven gears are all rotatably installed inside the transmission box. The bottom ends of the four driven gears are all rotatably connected with a universal coupling through a connecting shaft. The bottom end of the universal coupling is rotatably connected with a rotating rod, and a capping head is fixedly installed at the bottom end of the rotating rod. Moving seats are fixedly sleeved outside the tops of the two rotating rods on the same side, and the output rods of cylinders are fixedly connected to the outside of the two moving seats.

[0007] Preferably, an upper bracket is fixedly installed on one side of the upper surface of the cabinet. A lifting screw rod is rotatably installed in the middle of the upper bracket through a bearing. On both sides of the lifting screw rod and inside the upper bracket, first-level guide rods are fixedly installed. The bottom end of the lifting screw rod is fixedly connected to the output shaft of a first-level motor.

[0008] Preferably, a lifting plate is threadedly connected to the lifting screw rod. The two sides of the lifting plate are sleeved outside the two first-level guide rods and are slidably connected to the first-level guide rods. The top end of the lifting plate is fixedly connected to the capping head.

[0009] Preferably, clamping seats are fixedly installed on the outer walls of both sides of the top end of the conveyor belt. Lifting optical rods are inserted into the clamping seats. The top ends of the lifting optical rods are fixedly installed with fixing seats.

[0010] Preferably, a second-level optical rod is movably inserted into the fixing seat. Clamping bolts are threadedly connected to both sides of the fixing seat. The top end of the second-level optical rod is fixedly installed with a flow guiding plate.

[0011] Preferably, lower fixing plates are fixedly installed on both sides of the upper surface of the cabinet at the tail end of the conveyor belt. Two adjusting screw rods are connected by bearings between the two lower fixing plates. The adjusting screw rods are reverse-threaded screws. Adjusting brackets are threadedly connected to the forward and reverse threads of the two adjusting screw rods.

[0012] Preferably, feeding frames are fixedly installed at the top ends of the two adjusting brackets. A feeding belt is arranged inside the feeding frames. A feeding motor for feeding drive is installed on one side of the feeding belt.

[0013] Preferably, handwheels are fixedly installed at the top ends of the two adjusting screw rods.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] For the capping machine of the present utility model, the telescopic movement of the rod body driven by the air cylinder can drive the moving seat to move, so that the distance between the two capping heads increases or decreases. In this way, by adjusting the distance between the capping heads, it is applicable to rotate caps of different sizes. Through the free adjustment of the distance, the capping heads can be in full contact with the caps, avoiding capping gaps, having the use effect of stable clamping of the caps, effectively improving the quality and efficiency of capping, avoiding the situation of incomplete capping, and the distance adjustment can be achieved by driving the air cylinder, which is convenient to adjust, has good practicability, can be applicable to automatically cap caps of different sizes, effectively reducing the use limitations and improving the applicable range;

[0016] Meanwhile, the overall structure of the capping head can move up and down driven by the threaded lifting structure, so that the capping head of the present utility model has the usage characteristic of dynamically adjustable working height, can be applied to capping containers of different heights, effectively improves the usage range of container sizes, reduces the usage limitations, and improves the usage effect;

[0017] Moreover, the present utility model is provided with flow guiding plates on both sides of the conveyor belt. Through the arranged flow guiding plates, the left and right limit and flow guiding treatment can be carried out on both sides of the container, avoiding the side drop of the container during transmission, and the use is convenient;

[0018] The arranged lifting optical rod can be telescopically inserted into the clamping seat. When fixing, just tighten the bolts in the clamping seat. In this way, the lifting of the lifting optical rod can drive the flow guiding plate to freely adjust the height, so as to be applicable to feeding and flow guiding work of containers of different heights. And the arranged secondary optical rod can be telescopic in the fixed seat, so as to adjust the distance between the two flow guiding plates, so as to be applicable to the flow guiding use of containers with different bottle body sizes, and the use is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front three-dimensional structural schematic diagram of the capping machine according to an embodiment of the present utility model;

[0020] Figure 2 It is a back three-dimensional structural schematic diagram of the capping machine according to an embodiment of the present utility model;

[0021] Figure 3 It is according to an embodiment of the present utility model Figure 1 The enlarged structural schematic diagram of area A;

[0022] Figure 4 It is an internal structural schematic diagram of the capping head according to an embodiment of the present utility model;

[0023] Figure 5 It is a schematic diagram of the internal gear transmission structure of the gearbox according to an embodiment of the present utility model;

[0024] Figure 6 It is a structural schematic diagram of the tail-end feeding belt according to an embodiment of the present utility model.

[0025] In the figure: 1, cabinet; 2, conveyor belt; 3, upper support; 4, lifting lead screw; 5, lifting plate; 6, first-level motor; 7, first-level guide rod; 8, capping head; 9, capping motor; 10, gear box; 11, driving gear; 12, driven gear; 13, universal coupling; 14, rotating rod; 15, rotating head; 16, moving seat; 17, cylinder; 18, clamping seat; 19, lifting optical rod; 20, fixed seat; 21, second-level optical rod; 22, tightening bolt; 23, deflector; 24, lower fixing plate; 25, adjusting lead screw; 26, adjusting bracket; 27, feeding rack; 28, feeding belt; 29, feeding motor; 30, hand wheel. Detailed implementation manners

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] Please refer to Figures 1-6, an embodiment provided by the present utility model: a stable clamping type capping machine, including a cabinet 1. On the upper surface of the cabinet 1, a conveyor belt 2 is fixedly installed. When the conveyor belt 2 is working, it can convey and process the containers that need to be capped, so that they can smoothly enter the capping area. Above the cabinet 1, a capping head 8 is provided. On the upper surface of the capping head 8, a capping motor 9 is fixedly installed. Below the capping motor 9 and inside the capping head 8, a gearbox 10 is fixedly installed. At the central position of the gearbox 10, a driving gear 11 is rotatably installed. Four driven gears 12 are externally meshed with the driving gear 11. The four driven gears 12 are evenly distributed in a circular pattern at equal intervals around the center point of the driving gear 11. The output shaft of the capping motor 9 is fixedly connected to the driving gear 11. The four driven gears 12 are all rotatably installed inside the transmission box;

[0030] According to the above description, the capping motor 9 can rotate. When the capping motor 9 rotates, it will drive the driving gear 11 inside the gearbox 10 to rotate through the output shaft. Thus, the rotation of the driving gear 11 drives the four driven gears 12 to rotate synchronously, providing the rotation condition for the subsequent capping work;

[0031] At the bottom end of each of the four driven gears 12, a universal coupling 13 is rotatably connected through a connecting shaft. The bottom end of the universal coupling 13 is rotatably connected to a rotating rod 14. At the bottom end of the rotating rod 14, a capping head 15 is fixedly installed. Outside the top ends of the two rotating rods 14 on the same side, a moving seat 16 is fixedly sleeved. The outer parts of the two moving seats 16 are fixedly connected to the output rods of cylinders 17;

[0032] With this structural design, when the four driven gears 12 rotate, they will drive the lower rotating rods 14 to rotate synchronously through the universal couplings 13. Thus, the rotation of the rotating rods 14 drives the capping heads 15 to rotate. Therefore, when the four capping heads 15 rotate, they will synchronously drive the caps between the four capping heads 15 to rotate, completing the rotational processing work of the caps of the containers and ensuring the sealing performance of the caps;

[0033] At the same time, when it is necessary to adjust the distance between the capping heads on both sides, the cylinders 17 provided can drive the moving seats 16 to move through their output rods. When the moving seats 16 move, they will synchronously drive the capping heads 15 on both sides to move, increasing or decreasing the distance between the capping heads 15 on both sides. Thus, by adjusting the distance between the capping heads 15, it is applicable to rotate caps of different sizes. Through the free adjustment of the distance, the capping heads 15 can be in full contact with the caps, avoiding capping gaps, having the use effect of stable clamping of the caps, effectively improving the quality and efficiency of capping, avoiding the situation of incomplete capping, and the distance adjustment can be driven by the cylinders 17, which is convenient to adjust, has good practicability, can be applicable to automatically cap caps of different sizes, effectively reduces the usage limitations, and improves the applicable range.

[0034] In this embodiment, in order to drive the capping head 8 to perform free lifting adjustment, so that the utility model can be applied to capping processing of containers with different heights, an upper support 3 is fixedly installed on one side of the upper surface of the cabinet 1. A lifting screw rod 4 is rotatably installed in the middle of the upper support 3 through a bearing. On both sides of the lifting screw rod 4 and inside the upper support 3, first-stage guide rods 7 are fixedly installed. The bottom end of the lifting screw rod 4 is fixedly connected to the output shaft of a first-stage motor 6;

[0035] Furthermore, a lifting plate 5 is threadedly connected to the lifting screw rod 4. Both sides of the lifting plate 5 are sleeved outside the two first-stage guide rods 7 and are slidably connected to the first-stage guide rods 7. The top end of the lifting plate 5 is fixedly connected to the capping head 8;

[0036] With this structural design, the first-stage motor 6 can rotate. When the first-stage motor 6 rotates, it will synchronously drive the lifting screw rod 4 to rotate. When the lifting screw rod 4 rotates, the lifting plate 5 threadedly connected thereto can perform linear displacement up and down along the first-stage guide rods 7 and the lifting screw rod 4. Thus, the overall structure of the capping head 8 of the utility model is driven to move up and down through the movement of the lifting plate 5, so that the capping head 8 of the utility model has the use characteristic that the working height can be dynamically adjusted, can be applied to capping of containers with different heights, effectively improves the use range of container sizes, reduces the use limitations, and improves the use effect.

[0037] In this embodiment, in order to perform left and right limiting and guiding work on the capped containers to prevent them from falling from the side of the conveyor belt 2, clamping seats 18 are fixedly installed on the outer walls of both sides of the top end of the conveyor belt 2. A lifting optical rod 19 is inserted into the clamping seat 18, and a fixed seat 20 is fixedly installed at the top end of the lifting optical rod 19;

[0038] Among them, a second-stage optical rod 21 is movably inserted into the fixed seat 20. Clamping bolts 22 are threadedly connected to both sides of the fixed seat 20. A guide plate 23 is fixedly installed at the top end of the second-stage optical rod 21;

[0039] According to the above structure description, by arranging guide plates 23 on both sides of the conveyor belt 2, the guide plates 23 can perform left and right limiting and guiding processing on both sides of the container, preventing the container from falling sideways during transportation, which is convenient to use;

[0040] And by arranging the lifting optical rod 19 to be movably inserted and telescopic in the clamping seat 18, just tighten the bolts in the clamping seat 18 during fixation. In this way, the lifting of the lifting optical rod 19 can drive the guide plate 23 to perform free height adjustment, so as to be applicable to feeding and guiding work of containers with different heights;

[0041] The secondary optical rod 21 can be telescoped within the fixed seat 20, so that the distance between the two guide plates 23 can be adjusted, thus it can be applied to the diversion of containers with different bottle body sizes, and is convenient to use.

[0042] In this embodiment, in order to cooperate with the use of the screw cap of the above diversion structure, lower fixing plates 24 are fixedly installed at both sides of the upper surface of the cabinet 1 at the tail end of the conveyor belt 2. Two adjusting screw rods 25 are connected between the two lower fixing plates 24 through bearings. The adjusting screw rods 25 are reverse-threaded screws. Adjusting brackets 26 are threadedly connected to the positive and reverse threads of the two adjusting screw rods 25;

[0043] Furthermore, feed racks 27 are fixedly installed at the tops of the two adjusting brackets 26. A feed belt 28 is arranged inside the feed rack 27. A feed motor 29 for feed driving is installed on one side of the feed belt 28. The feed motor 29 can drive the feed belt 28 to work, so as to perform auxiliary rotary feeding work after screwing the cap. Handwheels 30 are fixedly installed at the tops of the two adjusting screw rods 25;

[0044] Among them, as an optimized technical solution of the present invention, the handwheel 30 can be replaced by a servo motor during actual use, so that the servo motor drives the adjusting screw rod 25 to rotate, which has the use effect of automatic adjustment;

[0045] In this embodiment, in order to cooperate with the use of the guide plate 23, the feed rack 27 has a certain distance adjustability. During adjustment, the two handwheels 30 are rotated synchronously. When the handwheels 30 rotate synchronously, the two adjusting screw rods 25 are driven to rotate synchronously. Since the adjusting screw rod 25 is a reverse-threaded screw, when the adjusting screw rod 25 rotates, the two adjusting brackets 26 thereon will move relatively, that is, move away from or close to each other, so that the relative movement of the two adjusting brackets 26 drives the feed rack 27 thereon to move relatively, thereby completing the distance adjustment work between the two feed racks 27, so that the side feed belt 28 can fully contact the side of the container, which is convenient for the auxiliary conveying work after screwing the cap.

[0046] Working principle: When the present invention is in use, the container to be screwed with a cap can be transported to the conveyor belt 2 of the present invention through an external conveying device (such as a manipulator, a conveyor belt, etc.). When the conveyor belt 2 works, it can transport the container to be screwed with a cap, so that it can smoothly enter the capping area;

[0047] And guide plates 23 are arranged on both sides of the conveyor belt 2. Through the arranged guide plates 23, the left and right limit diversion treatment can be carried out on both sides of the container, avoiding the side drop of the container during transportation, and it is convenient to use;

[0048] Moreover, the lifting optical rod 19 can be telescopically inserted into the clamping seat 18. When fixing, just tighten the bolts in the clamping seat 18. In this way, the lifting of the lifting optical rod 19 can drive the flow guide plate 23 to freely adjust the height, so as to be applicable to the feeding and guiding work of containers of different heights.

[0049] The secondary optical rod 21 can be telescoped in the fixed seat 20, so as to adjust the distance between the two flow guide plates 23, so as to be applicable to the guiding of containers with different bottle body sizes, which is convenient to use.

[0050] The container conveyed by the conveyor belt 2 enters the capping station below the capping head 8. At this time, the conveyor belt 2 stops working (in actual use, when the sensor senses that there is an object at the capping station, the control center controls the conveyor belt 2 to stop working. This is a common technical solution in the industrial technology field and will not be elaborated in this specification).

[0051] When the container enters below the capping head 8, the cylinder 17 can drive the moving seat 16 to move through its output rod. When the moving seat 16 moves, it will synchronously drive the capping heads 15 on both sides to move, reducing the distance between the two capping heads 15, so as to clamp the lid body by the capping heads 15. Then, the capping motor 9 can rotate. When the capping motor 9 rotates, it will drive the driving gear 11 inside the gearbox 10 through the output shaft. In this way, the rotation of the driving gear 11 drives the four driven gears 12 to rotate synchronously.

[0052] When the four driven gears 12 rotate, they will drive the lower rotating rod 14 to rotate synchronously through the universal coupling 13. In this way, the rotation of the rotating rod 14 drives the capping heads 15 to rotate. When the four capping heads 15 rotate, they will synchronously drive the lid body between the four capping heads 15 to rotate, so as to complete the rotary sealing work of the lid body of the container, ensuring the sealing performance of the lid body and having a good container capping processing effect.

[0053] After capping, the cylinder 17 drives the moving seat 16 to retract and reset through the output rod. At this time, the distance between the capping heads 15 increases to release the lid body. The capped container enters the next station under the joint transportation of the conveyor belt 2 and the feeding belt 28 to complete the capping process.

[0054] In this way, the automatic capping work of the lid body can be completed through the above method.

[0055] Moreover, the first-stage motor 6 provided in the present utility model can rotate. When the first-stage motor 6 rotates, it will synchronously drive the lifting screw rod 4 to rotate. When the lifting screw rod 4 rotates, the lifting plate 5 threadedly connected thereto can perform linear displacement up and down along the first guiding rod 7 and the lifting screw rod 4. Thus, the overall structure of the cap screwing head 8 is driven to move up and down by the movement of the lifting plate 5, so that the cap screwing head 8 of the present utility model has the use characteristic that the working height can be dynamically adjusted, can be applied to capscrewing of containers with different heights, effectively improves the use range of container sizes, reduces the use limitation, and improves the use effect;

[0056] According to the above description, for the cap screwing machine of the present utility model, the telescopic movement of the rod body driven by the air cylinder 17 can drive the moving seat 16 to move, so that the distance between the two side cap screwing heads 15 is increased or decreased. Thus, by adjusting the distance between the cap screwing heads 15, it is applicable to rotating work of caps with different sizes. Through the free adjustment of the distance, the cap screwing heads 15 can be in full contact with the cap, avoiding the occurrence of a cap screwing gap, having the use effect of stably clamping the cap, effectively improving the quality and efficiency of cap screwing, avoiding the situation of incomplete cap screwing, and the distance adjustment can be achieved only by driving the air cylinder 17, with convenient adjustment and good practicability, can be applied to automatic cap screwing treatment of caps with different sizes, effectively reducing the use limitation and improving the applicable range;

[0057] At the same time, the overall structure of the cap screwing head 8 can move up and down driven by the threaded lifting structure, so that the cap screwing head 8 of the present utility model has the use characteristic that the working height can be dynamically adjusted, can be applied to capscrewing of containers with different heights, effectively improves the use range of container sizes, reduces the use limitation, and improves the use effect;

[0058] Moreover, the present utility model is provided with guide plates 23 on both sides of the conveyor belt 2. The guide plates 23 provided can perform left-right limiting and guiding treatment on both sides of the container, avoiding the sidewise drop of the container during transmission, and is convenient to use;

[0059] The provided lifting optical rod 19 can be movably inserted and telescopically arranged in the clamping seat 18. When fixing, just tighten the bolt in the clamping seat 18. In this way, the lifting of the lifting optical rod 19 can drive the guide plate 23 to perform free height adjustment, so as to be applicable to the feeding and guiding work of containers with different heights. And the provided second-stage optical rod 21 can be telescopically arranged in the fixed seat 20, so as to adjust the distance between the two guide plates 23, so as to be applicable to the guiding use of containers with different bottle body sizes, and is convenient to use.

[0060] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A stable clamping type capping machine, comprising a cabinet (1), characterized in that, A conveyor belt (2) is fixedly installed on the upper surface of the cabinet (1). Above the cabinet (1), a capping head (8) is provided. A capping motor (9) is fixedly installed on the upper surface of the capping head (8). Below the capping motor (9) and inside the capping head (8), a gearbox (10) is fixedly installed. A driving gear (11) is rotatably installed at the central position of the gearbox (10). Four driven gears (12) are externally meshed with the driving gear (11). The four driven gears (12) are evenly distributed in a circular pattern at equal intervals around the center point of the driving gear (11). The output shaft of the capping motor (9) is fixedly connected to the driving gear (11). The four driven gears (12) are all rotatably installed inside the transmission box. The bottom ends of the four driven gears (12) are all rotatably connected to a universal coupling (13) through a connecting shaft. The bottom end of the universal coupling (13) is rotatably connected to a rotating rod (14). A capping head (15) is fixedly installed at the bottom end of the rotating rod (14). A moving seat (16) is fixedly sleeved outside the top ends of the two rotating rods (14) on the same side. The output rods of cylinders (17) are fixedly connected to the outside of the two moving seats (16).

2. The stable clamping type capping machine according to claim 1, characterized in that: An upper bracket (3) is fixedly installed on one side of the upper surface of the cabinet (1). A lifting lead screw (4) is rotatably installed at the middle position inside the upper bracket (3) through a bearing. On both sides of the lifting lead screw (4) and inside the upper bracket (3), first-stage guide rods (7) are fixedly installed. The bottom end of the lifting lead screw (4) is fixedly connected to the output shaft of a first-stage motor (6).

3. The stable clamping type capping machine according to claim 2, wherein: A lifting plate (5) is threadedly connected to the lifting lead screw (4). The two sides of the lifting plate (5) are sleeved outside the two first-stage guide rods (7) and are slidably connected to the first-stage guide rods (7). The top end of the lifting plate (5) is fixedly connected to the capping head (8).

4. The stable clamping type capping machine according to claim 1, characterized in that: Clamping seats (18) are fixedly installed on the outer walls of both sides of the top end of the conveyor belt (2). A lifting optical rod (19) is inserted into the clamping seat (18). A fixed seat (20) is fixedly installed at the top end of the lifting optical rod (19).

5. The stable clamping type capping machine according to claim 4, wherein: A second-stage optical rod (21) is movably inserted into the fixed seat (20). Clamping bolts (22) are threadedly connected to both sides of the fixed seat (20). A diversion plate (23) is fixedly installed at the top end of the second-stage optical rod (21).

6. The stable clamping type capping machine according to claim 1, wherein: Lower fixing plates (24) are fixedly installed on both sides of the upper surface of the cabinet (1) at the tail end of the conveyor belt (2). Two adjusting lead screws (25) are connected by bearings between the two lower fixing plates (24). The adjusting lead screws (25) are reverse-threaded screws. Adjusting brackets (26) are threadedly connected to the forward and reverse threads of the two adjusting lead screws (25).

7. A stable clamping type capping machine according to claim 6, wherein: Feeding frames (27) are fixedly installed at the top ends of the two adjusting brackets (26). A feeding belt (28) is arranged inside the feeding frame (27). A feeding motor (29) for feeding drive is installed on one side of the feeding belt (28).

8. A stable clamping type capping machine according to claim 6, wherein: Handwheels (30) are fixedly installed at the top ends of the two adjusting lead screws (25).

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