Piston conveying device

Abstract

The utility model relates to the field of automatic assembly of rubber bottle pistons, and provides a piston conveying device which comprises a piston, a structural frame and a workbench connected to the structural frame, and a piston vibration conveying structure and a piston clamping conveying structure are arranged on the workbench. The piston vibration conveying structure comprises a conveying belt, a vibration belt and a piston pushing air cylinder, the conveying belt is arranged on the workbench, the vibration belt is connected with the conveying belt, a baffle is arranged at the end, away from the vibration belt, of the conveying belt, and the piston moves to the baffle along the conveying belt after being vibrated by the vibration belt and is pushed to the piston clamping and conveying structure through the piston pushing air cylinder. The action direction of the piston pushing air cylinder and the extending direction of the conveying belt are not on the same straight line. The piston clamping and conveying structure comprises a piston clamping tool and a driving air cylinder, the piston clamping tool is provided with a piston clamping groove, and the driving air cylinder is connected with the piston clamping tool and pushes the piston clamping tool to move back and forth between the initial station and the piston mounting station.

Description

Technical Field

[0001] The utility model relates to the field of automatic assembly of rubber bottle pistons, in particular to a piston transportation device. Background Art

[0002] During the filling process of the plastic bottle, the plastic bottle needs to be sealed. Usually, the piston is placed in the plastic bottle manually. This method is time-consuming and labor-intensive, and the labor cost is high. There is an urgent need for a piston transportation device with a simple structure and easy operation. Utility Model Content

[0003] In order to overcome the above technical defects, the purpose of the utility model is to provide a piston transportation device with simple structure and convenient operation, which can automatically transport the piston to the piston installation station and reduce the degree of manual participation.

[0004] The utility model discloses a piston transport device, comprising a piston, a structural frame and a workbench connected to the structural frame, wherein the workbench is provided with a piston vibration transmission structure and a piston clamping and transporting structure;

[0005] The piston vibration transmission structure comprises a transmission belt, a vibration belt and a piston pushing cylinder, wherein the transmission belt is arranged on the workbench, the vibration belt is connected to the transmission belt, and a baffle is arranged at one end of the transmission belt away from the vibration belt. After the piston is vibrated by the vibration belt, it moves along the transmission belt until it reaches the baffle, and the piston pushing cylinder pushes the piston to the piston clamping and conveying structure, wherein the movement direction of the piston pushing cylinder is not in the same straight line as the extension direction of the transmission belt;

[0006] The piston clamping and conveying structure includes a piston clamping tool and a driving cylinder. The piston clamping tool is provided with a piston clamping groove. The driving cylinder is connected to the piston clamping tool to push the piston clamping tool back and forth between the initial station and the piston installation station. At the initial station, the piston clamping groove receives and clamps the piston pushed by the piston pushing cylinder. At the piston installation station, the piston clamping groove transports the piston to the piston installation station.

[0007] Preferably, the piston vibration transmission structure also includes a laser sensor, which is connected to the baffle and is also connected to the piston pushing cylinder. The laser sensor detects when the piston reaches the baffle and sends a piston in place signal to the piston pushing cylinder, so that the piston pushing cylinder pushes the piston to the piston clamping groove.

[0008] Preferably, the piston clamping tool includes a fixed part and a movable part movably connected to the fixed part, the fixed part is provided with a groove, the bottom of the groove is provided with one or more through holes, the end of the fixed part away from the groove opening is connected to one or more first elastic parts located in the through hole, one end of the movable part is provided with one or more limit rods, the end of the limit rod is provided with a limit block, the other end of the movable part is connected to the driving cylinder, at least one side of the fixed part is provided with a first opening, and the side of the movable part is provided with a second opening corresponding to the first opening, when the movable part is embedded in the groove, the limit rod passes through the through hole and the first elastic part, so that the first opening and the second opening are combined to form at least one piston clamping groove, when the movable part is driven by the driving cylinder to move out of the groove, the limit block compresses the first elastic part until the piston to be clamped enters the piston clamping groove.

[0009] Preferably, both sides of the fixing member are provided with fixing blocks, and the fixing blocks are vertically connected to the sides of the fixing member. When the driving cylinder drives the movable member to move out of the groove, the fixing blocks are blocked by the baffle to limit the displacement of the fixing member.

[0010] Preferably, the piston vibration transmission structure is provided with two groups, which are respectively located on both sides of the piston clamping and conveying structure, the piston clamping tool is provided with two piston clamping grooves, the fixed part is provided with first openings on both sides, the movable part is provided with two second openings corresponding to the first opening, and the through hole, the first elastic component and the limit rod are all provided with two.

[0011] Preferably, when the piston clamping tool clamps two pistons of different sizes, the two fixed blocks are not at the same height in the radial direction, and the fixed block on the side where the relatively smaller piston is located is axially closer to the first opening than the fixed block on the side where the relatively larger piston is located, and the two baffles are not at the same height in the radial direction, and the baffle on the side where the relatively smaller piston is axially closer to the vibration belt than the baffle on the side where the relatively larger piston is located; when the piston clamping tool clamps two pistons of the same size, the two fixed blocks are at the same height in the radial direction, and the two baffles are at the same height in the radial direction.

[0012] Preferably, a second elastic component is connected to the side of the fixed block facing the baffle. When the piston clamping tool clamps two pistons of different sizes, the second elastic component on the side where the relatively larger piston is located is a spring and a first elastic pad connected to the spring. The spring is connected to the fixed block, and the second elastic component on the side where the relatively smaller piston is located is a second elastic pad.

[0013] Preferably, the first opening and the second opening are both arc-shaped, and the first opening and the second opening are spliced ​​together to form a circular piston clamping groove. The first opening includes a first arc surface and a first chamfer. The first arc surface is a quarter arc surface opening outward, and the first chamfer is arranged at the connection between the first arc surface and the side of the fixed part. The second opening includes a second arc surface, a straight extension surface, a second chamfer and a third chamfer. The second arc surface is a semi-arc surface opening outward, the straight extension surface is tangent to the second arc surface, and is connected to one end of the second arc surface away from the first arc, the second chamfer is arranged at the connection between the straight extension surface and the side of the movable part, and the third chamfer is arranged at the connection between the second arc surface and the side of the movable part.

[0014] Preferably, a working groove is provided at one end of the movable part close to the driving cylinder, and one or more mounting holes are provided at the end surface of the working groove connected to the driving cylinder.

[0015] Preferably, the vibration belt is tilted downward toward the conveyor belt, and one end of the vibration belt away from the conveyor belt is connected to a vibration mechanism to cause the vibration belt to vibrate.

[0016] Compared with the prior art, the above technical solution has the following beneficial effects:

[0017] 1. Use the inclined vibration belt to vibrate the piston to the conveyor belt. At the conveyor belt baffle, the piston is pushed into the piston clamping groove of the piston clamping tool by the piston pushing cylinder. The piston clamping tool fixes and transports the piston to the piston installation station, realizing automatic transportation of the piston before installation and reducing the degree of manual participation.

[0018] 2. A piston clamping tool is provided, and a piston clamping groove is formed by a retractable connection between a fixed part and a movable part to accommodate the piston and fix the piston for transportation. The structure is simple and the piston can be clamped and moved accurately and quickly;

[0019] 3. The piston clamping groove can be set to different sizes, shapes and quantities to meet the actual needs of different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an overall structural diagram of a piston transportation device disclosed in an embodiment of the utility model;

[0021] Figure 2 This is an overall structural diagram of the piston clamping tool disclosed in the embodiment of the utility model at the installation station;

[0022] Figure 3 The overall structural diagram of the piston clamping tool provided by the embodiment of the utility model in the initial position;

[0023] Figure 4A schematic diagram of the structure of a fixing member in a piston clamping tool provided in an embodiment of the utility model;

[0024] Figure 5 A schematic diagram of the structure of the movable parts in the piston clamping tool provided in the embodiment of the utility model;

[0025] Figure 6 A schematic structural diagram of a piston clamping tool and a baffle provided in an embodiment of the utility model.

[0026] Figure numerals: 1-piston; 2-structure frame; 3-workbench; 4-transmission belt; 41-baffle; 5-vibration belt; 6-piston push cylinder; 7-piston clamping tool; 71-fixing piece; 711-through hole; 712-first elastic component; 713-first opening; 7131-first arc surface; 7132-first chamfer; 714-fixing block; 7141-second elastic component; 7151-first splicing piece; 7152-second splicing piece; 72-movable piece; 721-limiting rod; 722-limiting block; 723-second opening; 7231-second arc surface; 7232-straight extension surface; 7233-second chamfer; 7234-third chamfer; 724-working groove; 7241-mounting hole; 8-driving cylinder; 9-laser sensor. DETAILED DESCRIPTION

[0027] The advantages of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0029] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0030] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0031] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection of two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0033] In the following description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention, and they themselves have no specific meaning. Therefore, "module" and "component" can be used interchangeably.

[0034] See also Figure 1 , Figure 1 A piston transport device is shown, which comprises a piston 1, a structural frame 2 and a workbench 3 connected to the structural frame 2, and the workbench 3 is provided with a piston vibration transmission structure and a piston clamping and transporting structure;

[0035] The piston vibration transmission structure comprises a transmission belt 4, a vibration belt 5 and a piston pushing cylinder 6, wherein the transmission belt 4 is arranged on the workbench 3, the vibration belt 5 is connected to the transmission belt 4, and a baffle 41 is arranged at one end of the transmission belt 4 away from the vibration belt 5. After the piston 1 is vibrated by the vibration belt 5, it moves along the transmission belt 4 until it reaches the baffle 41, and the piston pushing cylinder 6 pushes the piston 1 to the piston clamping and conveying structure, wherein the movement direction of the piston pushing cylinder 6 is not in the same straight line as the extension direction of the transmission belt 4;

[0036] The piston clamping and conveying structure includes a piston clamping tool 7 and a driving cylinder 8. The piston clamping tool is provided with a piston clamping groove. The driving cylinder 8 is connected to the piston clamping tool to push the piston clamping tool back and forth between the initial position and the piston installation position. At the initial position, the piston clamping groove receives and clamps the piston pushed by the piston pushing cylinder. At the piston installation position, the piston clamping groove transports the piston to the piston installation position.

[0037] Specifically, a plurality of pistons 1 are placed on the vibration belt 5, and the current piston 1 is moved to the conveyor belt 4 by the vibration of the vibration belt 5, and the current piston 1 is moved to the baffle 41 by its own inertia and the pushing action of the next piston 1; the baffle 41 can be set close to the outer edge of the conveyor belt 4, or a certain space can be left with the outer edge of the conveyor belt 4, and the position of the baffle 41 is related to the size of the piston 1. The smaller the piston 1, the closer the baffle 41 is to the vibration belt 5 in the axial direction; the piston pushing cylinder 6 pushes the piston 1 at the baffle continuously, intermittently or occasionally into the piston clamping groove of the piston clamping tool 7, and the piston pushing cylinder 6 can push the piston 1 at a fixed frequency, or push the piston 1 at a variable frequency according to the pushing signal received by the piston pushing cylinder 6; after the piston 1 enters the piston clamping groove, the driving cylinder 8 controls the movement of the piston clamping tool 7, and the movement direction of the piston pushed by the driving cylinder 8 is perpendicular to the movement direction of the piston clamping tool 7. Furthermore, the vibration belt 5 is tilted downward toward the conveyor belt 4, and one end of the vibration belt 5 away from the conveyor belt 4 is connected to a vibration mechanism, so that the vibration belt 5 vibrates, driving the piston 1 on the vibration belt 4 to move toward the conveyor belt 4. In addition, in an embodiment of the utility model, the structural frame includes a bottom plate and a plurality of pillars connected to the bottom plate, and the pillars are preferably four, and the top ends of the pillars are connected to the workbench; the connection between the pillars and the bottom plate, and between the pillars and the workbench can be an integrated fixed connection or a detachable connection, preferably a detachable connection to facilitate the transportation of the equipment.

[0038] Preferably, the piston vibration transmission structure also includes a laser sensor 9, which is connected to the baffle 41. The laser sensor 9 is also connected to the piston pushing cylinder 6. The laser sensor 9 detects that the piston 1 reaches the baffle and sends a piston in-position signal to the piston pushing cylinder 6, so that the piston pushing cylinder 6 pushes the piston to the piston clamping groove; that is, by setting the laser sensor 9, the piston pushing cylinder 6 performs a pushing operation within a variable frequency of the received pushing signal.

[0039] Preferably, see Figure 2-6The piston clamping tool 7 includes a fixing member 71 and a movable member 72 movably connected to the fixing member; the fixing member 71 is provided with a groove, and one or more through holes 711 are provided at the bottom of the groove, and one end of the fixing member 71 away from the opening of the groove is connected to one or more first elastic members 712 located in the through hole 711; one end of the movable member 72 is provided with one or more limiting rods 721, and a limiting block 722 is provided at the end of the limiting rod 721, and the other end of the movable member 72 is connected to the driving cylinder 8; at least one of the fixing member 71 A first opening 713 is provided on one side, and a second opening 723 corresponding to the first opening 713 is provided on the side of the movable part 72. When the movable part 72 is embedded in the groove, the limiting rod 721 passes through the through hole 711 and the first elastic component 712, so that the first opening 713 and the second opening 723 are combined to form at least one piston clamping groove; when the movable part 72 is driven by the driving cylinder 8 to move out of the groove, the limiting block 722 compresses the first elastic component 712 until the piston to be clamped enters the piston clamping groove.

[0040] Specifically, Figure 2 As shown, at the piston installation position, the movable member 72 is embedded in the groove, and the first elastic member 712 is in a natural state; after the piston is installed, the piston clamping tool is returned to the initial position by the driving cylinder 8, as shown in FIG. Figure 3 As shown, at this time, the movable part 72 is driven by the driving cylinder 8 to move out of the groove, and the first elastic component 712 is in a compressed state, thereby realizing that the piston clamping tool clamps the piston back and forth between the initial position and the piston installation position. In one embodiment of the utility model, the piston clamping tool is only provided with a first opening 713 on one side of the fixed part 71, and a second opening 723 is provided on one side of the movable part 72 corresponding to the first opening 713, thereby forming a piston clamping groove, and the piston transport device is equipped with a driving cylinder 8 to achieve the clamping of a single piston; in another embodiment of the utility model, the piston clamping tool is provided with a first opening 713 on both sides of the fixed part 71, and two second openings 723 are correspondingly provided on both sides of the movable part 72, thereby forming two piston clamping grooves, and the piston transport device is equipped with two driving cylinders 8 to achieve the clamping of two pistons. Further, the first elastic component 712 is a spring.

[0041] Preferably, a fixing block 714 is provided on both sides of the fixing member 71, and the fixing block 714 is vertically connected to the side of the fixing member 71. When the driving cylinder 8 drives the movable member 72 to move out of the groove, the fixing block 714 is blocked by the baffle 41 to limit the displacement of the fixing member 71.

[0042] Specifically, when the driving cylinder 8 drives the piston clamping tool to return to the initial position, the fixed block 714 is stuck by the baffle 41, so that the fixing part 71 no longer moves; the driving cylinder 8 continues to drive the movable part 72 to move, so that the limit block 722 compresses the first elastic part 712 until a piston clamping groove is formed into which the piston to be clamped can enter; further, the fixed block 714 can be set to a rectangular structure, and the thickness of the fixed block 714 is consistent with the thickness of the fixing part 71.

[0043] Preferably, the piston vibration transmission structure is provided with two groups, which are respectively located on both sides of the piston clamping and conveying structure. The piston clamping tool 7 is provided with two piston clamping grooves, the fixed part 71 is provided with first openings 713 on both sides, and the movable part 72 is provided with two second openings 723 corresponding to the first openings 713.

[0044] Specifically, the size and shape of the first openings 713 on both sides of the fixed member 71 can be the same or different. Similarly, the size and shape of the two second openings 723 of the movable member 72 can be the same or different, thereby forming two identical or different piston clamping grooves to meet the needs of different working conditions.

[0045] Furthermore, the first opening 713 and the second opening 723 are both arc-shaped, and the first opening 713 and the second opening 723 are combined to form a circular piston clamping groove; further, the first opening 713 includes a first arc surface 7131 and a first chamfer 7132, the first arc surface 7131 is a quarter arc surface opening outward, and the first chamfer 7132 is provided at the connection between the first arc surface 7131 and the side surface of the fixing member 71, and the second opening 723 includes a second arc surface 7231, a straight The linear extension surface 7232, the second chamfer 7233 and the third chamfer 7234, the second arc surface 7231 is a semi-circular arc surface opening outward, the linear extension surface 7232 is tangent to the second arc surface 7231, and is connected to the end of the second arc surface 7231 away from the first arc surface 7131, the second chamfer 7233 is arranged at the connection between the linear extension surface 7232 and the side surface of the movable part 72, and the third chamfer 7234 is arranged at the connection between the second arc surface 7231 and the side surface of the movable part 72.

[0046] In one embodiment of the present invention, the piston clamping tool 7 is provided with two piston clamping grooves. When the piston clamping tool 7 clamps two pistons of different sizes, the two fixing blocks 714 are not at the same height in the radial direction, and the fixing block 714 on the side where the relatively smaller piston is located is axially closer to the first opening 713 than the fixing block 714 on the side where the relatively larger piston is located; that is, the position at which the fixing block 714 is arranged is related to the size of the piston. The smaller the piston, the closer the axial position of the fixing block 714 is to the first opening 713; accordingly, the two baffles 41 arranged in conjunction with the piston holding tool 7 are not at the same height in the radial direction, and the relatively smaller piston is closer to the first opening 713. The baffle plate 41 on the side of the relatively large piston is axially closer to the vibration belt 5 than the baffle plate 41 on the side of the relatively large piston; in addition, the second elastic component 7141 on the side where the relatively large piston is located is a spring and a first elastic pad connected to the spring, and the spring is connected to the fixing block 1. The second elastic component 7141 on the side where the relatively small piston is located is a second elastic pad, that is, the setting type of the second elastic component 7141 is also related to the size of the piston. The larger the piston, the larger the elastic space required. Therefore, the second elastic component 7141 on the side of the larger piston is provided with a spring on the basis of the first elastic pad to increase the elastic displacement of the fixing member 71 in the limited state, so as to ensure that the piston 1 smoothly enters the piston clamping groove. It should be noted that the spring connected to the first elastic pad is not marked in the attached figure.

[0047] In another embodiment of the present invention, when the piston clamping tool 7 clamps two pistons of the same size, the two fixing blocks 714 are at the same height in the radial direction; the type of the second elastic component 7141 can be selected according to the size of the piston, and this embodiment is not limited to this.

[0048] Preferably, a working groove 724 with a hollow structure is provided at one end of the movable part 72 close to the driving cylinder 8, which is convenient for holding the piston clamping tool and installing it on the piston transportation equipment, and is also beneficial for the installation and fixation of the driving cylinder 8. The end surface of the working groove 724 connected to the driving cylinder 8 is provided with one or more mounting holes 7241, and the movable part 72 is fixedly connected to the driving cylinder 8 through the mounting holes 7241 by bolts or other fixing parts; further, the working groove 724 is set to one or two, and the mounting holes 7241 are provided with two.

[0049] Preferably, the through hole 711, the first elastic component 712 and the limiting rod 721 are all set in two, which reduces the cost and simplifies the structure, and ensures that when the movable part 72 is driven by the driving cylinder 8 to return to its original position, the fixed part 71 is evenly stressed to avoid the problem of deflection.

[0050] Preferably, the fixing member 71 comprises a first splicing member 7151 and a second splicing member 7152 which are connected to each other. The first splicing member 7151 and the second splicing member 7152 are spliced ​​together to form the groove. Since the end of the movable member 72 can be embedded in the groove, the fixing member 71 is formed by splicing two parts, which is convenient for installation. The first splicing member 7151 (or the second splicing member 7152) can be installed first, then the movable member 72 is arranged, and finally the second splicing member 7152 (or the first splicing member 7151) is installed in this order to ensure that the groove of the fixing member 71 matches the end of the movable member 72.

[0051] It should be noted that the embodiments of the present invention have better practicability and do not impose any form of limitation on the present invention. Any technician familiar with the field may use the technical content disclosed above to change or modify it into an equivalent effective embodiment. However, any modification or equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A piston transport device, characterized in that: It comprises a piston, a structural frame and a workbench connected to the structural frame, wherein the workbench is provided with a piston vibration transmission structure and a piston clamping and conveying structure; The piston vibration transmission structure comprises a transmission belt, a vibration belt and a piston pushing cylinder, wherein the transmission belt is arranged on the workbench, the vibration belt is connected to the transmission belt, and a baffle is arranged at one end of the transmission belt away from the vibration belt. After the piston is vibrated by the vibration belt, it moves along the transmission belt until it reaches the baffle, and the piston pushing cylinder pushes the piston to the piston clamping and conveying structure, wherein the movement direction of the piston pushing cylinder is not in the same straight line as the extension direction of the transmission belt; The piston clamping and conveying structure includes a piston clamping tool and a driving cylinder. The piston clamping tool is provided with a piston clamping groove. The driving cylinder is connected to the piston clamping tool to push the piston clamping tool back and forth between the initial station and the piston installation station. At the initial station, the piston clamping groove receives and clamps the piston pushed by the piston pushing cylinder. At the piston installation station, the piston clamping groove transports the piston to the piston installation station.

2. A piston transport device according to claim 1, characterized in that: The piston vibration transmission structure also includes a laser sensor, which is connected to the baffle. The laser sensor is also connected to the piston pushing cylinder. The laser sensor detects when the piston reaches the baffle and sends a piston in place signal to the piston pushing cylinder, so that the piston pushing cylinder pushes the piston to the piston clamping groove.

3. A piston transport device according to claim 1, characterized in that: The piston clamping tool includes a fixed part and a movable part movably connected to the fixed part, the fixed part is provided with a groove, and one or more through holes are provided at the bottom of the groove, one end of the fixed part away from the groove opening is connected to one or more first elastic parts located in the through hole, one end of the movable part is provided with one or more limit rods, and the end of the limit rod is provided with a limit block, the other end of the movable part is connected to the driving cylinder, at least one side of the fixed part is provided with a first opening, and the side of the movable part is provided with a second opening corresponding to the first opening, when the movable part is embedded in the groove, the limit rod passes through the through hole and the first elastic part, so that the first opening and the second opening are combined to form at least one piston clamping groove, when the movable part is driven by the driving cylinder to move out of the groove, the limit block compresses the first elastic part until the piston to be clamped enters the piston clamping groove.

4. A piston transport device according to claim 3, characterized in that: Both sides of the fixing member are provided with fixing blocks, and the fixing blocks are vertically connected to the sides of the fixing member. When the driving cylinder drives the movable member to move out of the groove, the fixing blocks are blocked by the baffle to limit the displacement of the fixing member.

5. A piston transport device according to claim 4, characterized in that: The piston vibration transmission structure is provided with two groups, which are respectively located on both sides of the piston clamping and conveying structure. The piston clamping tool is provided with two piston clamping grooves. First openings are respectively provided on both sides of the fixed part. The movable part is provided with two second openings corresponding to the first opening. The through hole, the first elastic component and the limit rod are all provided with two.

6. A piston transport device according to claim 5, characterized in that: When the piston clamping tool clamps two pistons of different sizes, the two fixed blocks are not at the same height in the radial direction, and the fixed block on the side where the relatively smaller piston is located is axially closer to the first opening than the fixed block on the side where the relatively larger piston is located, and the two baffles are not at the same height in the radial direction, and the baffle on the side where the relatively smaller piston is axially closer to the vibration belt than the baffle on the side where the relatively larger piston is located; when the piston clamping tool clamps two pistons of the same size, the two fixed blocks are at the same height in the radial direction, and the two baffles are at the same height in the radial direction.

7. A piston transport device according to claim 5, characterized in that: A second elastic component is connected to a side of the fixed block facing the baffle. When the piston clamping tool clamps two pistons of different sizes, the second elastic component on the side where the relatively larger piston is located is a spring and a first elastic pad connected to the spring. The spring is connected to the fixed block, and the second elastic component on the side where the relatively smaller piston is located is a second elastic pad.

8. A piston transport device according to claim 3, characterized in that: The first opening and the second opening are both arc-shaped, and the first opening and the second opening are combined to form a circular piston clamping groove. The first opening includes a first arc surface and a first chamfer. The first arc surface is a quarter arc surface opening outward, and the first chamfer is arranged at the connection between the first arc surface and the side surface of the fixing member. The second opening includes a second arc surface, a straight extension surface, a second chamfer and a third chamfer. The second arc surface is a semi-arc surface opening outward, the straight extension surface is tangent to the second arc surface, and is connected to the end of the second arc surface away from the first arc, the second chamfer is arranged at the connection between the straight extension surface and the side surface of the movable member, and the third chamfer is arranged at the connection between the second arc surface and the side surface of the movable member.

9. A piston transport device according to claim 3, characterized in that: A working groove is arranged at one end of the movable part close to the driving cylinder, and one or more mounting holes are arranged at the end surface of the working groove connected to the driving cylinder.

10. A piston transport device according to claim 1, characterized in that: The vibration belt is tilted downward toward the transmission belt, and one end of the vibration belt away from the transmission belt is connected to a vibration mechanism to make the vibration belt vibrate.

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