A connection device

Abstract

The application discloses a connecting device, and belongs to the technical field of injection molding devices. The connecting device comprises an ejector rod and a bag clamping assembly. The movement of the bag clamping assembly drives the movement of the ejector rod. Specifically, the bag clamping assembly comprises a supporting piece and a clamping part. The supporting piece is a supporting structure of the connecting device, and is used for being connected with an injection molding machine and providing support for the bag clamping assembly. The supporting piece has a first accommodating cavity and a through hole. The through hole is in communication with the first accommodating cavity. The ejector rod is arranged in the through hole, and part of the ejector rod is located in the first accommodating cavity. The clamping part is movably arranged in the first accommodating cavity, and the clamping part can move along a first direction to abut against or move away from the ejector rod. The clamping part can clamp and space the ejector rod. The locking and dismounting between the ejector rod and the bag clamping assembly can be realized, so that the purpose of convenient dismounting is achieved.

Description

Technical Field

[0001] This application belongs to the field of injection molding equipment technology, and specifically relates to a connecting device. Background Technology

[0002] Currently, the ejector pin devices used in injection molding machines are pneumatic connection devices. In practical applications, these connection devices are prone to damage, requiring frequent replacements. However, the disassembly and assembly of these connection devices are time-consuming and labor-intensive, increasing maintenance costs. Utility Model Content

[0003] Purpose of this utility model: This application provides a connecting device to solve the technical problem of time-consuming and labor-intensive assembly and disassembly of connecting devices.

[0004] Technical solution: This application provides a connection device, including:

[0005] mandrel;

[0006] A bag clamping assembly includes a support member and a clamping part. The support member has a first receiving cavity and a through hole, the through hole communicating with the first receiving cavity. A push rod passes through the through hole, with a portion of the push rod located within the first receiving cavity. The clamping part is movably disposed within the first receiving cavity and is movable along a first direction to abut against or move away from the push rod. This application achieves locking and disassembly between the push rod and the bag clamping assembly by clamping and spacing the push rod with the clamping part, thereby facilitating assembly and disassembly.

[0007] Beneficial Effects: Compared with the prior art, the connecting device provided in this application includes a push rod and a clamping assembly. The push rod is used to connect with the mold; the clamping assembly is connected to the injection molding machine and can lock the push rod, so that when the injection molding machine operates, it drives the clamping assembly to move, and the movement of the clamping assembly drives the push rod to move. Specifically, the clamping assembly includes a support member and a clamping part. The support member is a support structure of the connecting device, used to connect with the injection molding machine and provide support for the clamping assembly. The support member has a first receiving cavity and a through hole. The through hole communicates with the first receiving cavity. The push rod passes through the through hole, and part of the push rod is located in the first receiving cavity. The clamping part is movably disposed in the first receiving cavity, and the clamping part can move along a first direction to abut against or move away from the push rod. Through the above technical solution, the push rod passes through the through hole into the clamping assembly, and then the clamping part moves along the first direction until it abuts against the push rod, thereby clamping the push rod. The relative position between the push rod and the clamping assembly is limited to achieve locking of the push rod. In other words, compared with existing pneumatic connection devices, this implementation scheme can achieve locking and disassembly between the top rod and the clamping assembly by clamping and spacing the top rod with the clamping part, thereby achieving the purpose of convenient assembly and disassembly. Attached Figure Description

[0008] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0009] Figure 1 This is a schematic diagram of the connection device provided in an embodiment of this application from one angle.

[0010] Figure 2 This is a schematic diagram of the overall structure of the support member provided in the embodiments of this application;

[0011] Figure 3 This is a schematic diagram of the overall structure of the support base provided in the embodiments of this application;

[0012] Figure 4 For this application Figure 1 BB cross-sectional structure diagram;

[0013] Figure 5 This is a schematic diagram of the overall structure of the clamping part provided in the embodiments of this application;

[0014] Figure 6 For this application Figure 1 AA cross-sectional structural diagram;

[0015] Figure 7 This is a schematic diagram of the overall structure of the unlocking component provided in the embodiments of this application;

[0016] Figure 8 This is a schematic diagram of the overall structure of the support portion provided in an embodiment of this application;

[0017] Figure 9 This is a schematic diagram showing the state of the protrusion during disassembly, as provided in an embodiment of this application.

[0018] Explanation of reference numerals in the attached figures:

[0019] X - First direction; Y - Second direction; Z - Third direction;

[0020] 100-Top rod;

[0021] 200-Clamping assembly; 210-Support member; 211-First receiving cavity; 212-Through hole; 213-Support base; 2131-Base; 21311-Allowing groove; 2132-Guide block; 21321-Fixing hole; 2133-Guide channel; 214-Support part; 2141-Second receiving cavity; 2142-Second mounting hole; 215-First mounting hole; 220-Clamping part; 221-Body; 2211-Mounting groove; 2212-First arc-shaped surface; 2213-Second arc-shaped surface; 222-Elastic member;

[0022] 300 - Unlocking part; 310 - Pin; 320 - Protrusion; 321 - Locking surface; 322 - Unlocking surface; 330 - Protrusion; 331 - Third mounting hole. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0024] In the description of this application, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two elements or an interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances. Furthermore, although the terms "first," "second," etc., may be used herein to describe various components, these components should not be limited by these terms. These terms are used to distinguish one component from another. Therefore, the first component discussed below may be referred to as the second component without departing from the teachings of this application. As used herein, the term "and / or" includes all combinations of any one and more of the associated listed items.

[0025] In the description of this application, "multiple" means two or more, and "at least one" means one, two, or more, unless otherwise explicitly specified. In the description of this application, "perpendicular" means completely perpendicular to 90° or almost completely perpendicular, for example, an angle of 80° to 100° is considered perpendicular. Similarly, "parallel" means completely parallel or almost completely parallel, for example, a completely parallel angle of 10° is considered parallel.

[0026] It should also be noted that in the accompanying drawings of the embodiments of this application, the arrows labeled X, Y, and Z respectively represent the first direction X, the second direction Y, and the third direction Z. The description of this application introduces the first direction X, the second direction Y, and the third direction Z to more clearly express the relative positional relationship involved in this application. The first direction X, the second direction Y, and the third direction Z are three intersecting relative directions, not absolute directions. In practical applications, the first direction X, the second direction Y, and the third direction Z can point to any direction in space, as long as the intersection relationship between them is maintained.

[0027] The following disclosure provides many different implementations or examples for carrying out different structures of this application. To simplify the disclosure of this application, the components and arrangements of specific examples are described below. Of course, these are merely examples and are not intended to limit this application.

[0028] Currently, the ejector pin device used in the injection molding machine industry for connecting molds is a pneumatic ejector rod connection device. In practical applications, due to the frequent mold changes, the connection device is prone to damage. Each time the ejector rod connection device is repaired and replaced, it takes about 2 hours, directly resulting in a significant increase in maintenance costs.

[0029] In view of this, embodiments of this application provide a connection device to solve at least part of the above-mentioned technical problems.

[0030] Please see Figure 1 In this embodiment, the connecting device includes a push rod 100 and a clamping assembly 200. The push rod 100 is used to connect to the mold. The clamping assembly 200 is connected to the injection molding machine and can lock the push rod 100, so that when the injection molding machine operates, it drives the clamping assembly 200 to move, and the movement of the clamping assembly 200 drives the push rod 100 to move. Specifically, the clamping assembly 200 includes a support member 210 and a clamping part 220. The support member 210 is a support structure of the connecting device, used to connect to the injection molding machine and provide support for the clamping assembly 200. The support member 210 has a first receiving cavity 211 and a through hole 212. The through hole 212 communicates with the first receiving cavity 211. The push rod 100 passes through the through hole 212, and a portion of the push rod 100 is located in the first receiving cavity 211. The clamping part 220 is movably disposed in the first receiving cavity 211, and the clamping part 220 is movable along the first direction X to abut against or move away from the push rod 100.

[0031] It should be noted that the push rod 100 passes through the through hole 212 into the clamping assembly 200, and then the clamping part 220 moves along the first direction X until it abuts against the push rod 100, thereby clamping the push rod 100. The relative position between the push rod 100 and the clamping assembly 200 is defined to achieve locking of the push rod 100. That is, compared with the existing pneumatic connection device, this embodiment of the present application can achieve locking and disassembly between the push rod 100 and the clamping assembly 200 by clamping and spacing the push rod 100 through the clamping part 220, thereby achieving the purpose of convenient assembly and disassembly of this connection device.

[0032] In some embodiments, please refer to Figure 2 and Figure 3 The support member 210 includes a support base 213 and a support portion 214. The support base 213 includes a base 2131 and two guide blocks 2132. A through hole 212 is formed on the base 2131, and the two guide blocks 2132 are disposed opposite each other on both sides of the through hole 212 and connected to the base 2131. Specifically, the base 2131 provides an installation platform for the two guide blocks 2132 and also provides a location for the through hole 212. The through hole 212 penetrates the base 2131 and is located at the center of the base 2131. The two guide blocks 2132 are distributed on both sides of the through hole 212 and are opposite each other, forming a guide channel 2133 between the two guide blocks 2132, which communicates with the through hole 212. After the push rod 100 passes through the through hole 212, a portion of the push rod 100 is located within the guide channel 2133. The clamping part 220 is located within the guide channel 2133 and moves along the guide channel 2133. That is, the two guide blocks 2132 provide guidance for the movement of the clamping part 220 so that the clamping part 220 can move along the set path.

[0033] The support portion 214 has a second receiving cavity 2141, and two guide blocks 2132 are housed within the second receiving cavity 2141. The support portion 214 abuts against the base 2131 in the second direction Y. The base 2131, the two guide blocks 2132, and the support portion 214 together form the first receiving cavity 211. It should be noted that there is a gap between the two guide blocks 2132 and the edge of the base 2131. The support portion 214 is annular and surrounds the outer periphery of the base 2131, abutting against the base 2131 in the second direction Y, so that both guide blocks 2132 are housed within the second receiving cavity 2141 of the support portion 214.

[0034] It should be noted that the side of the support 214 away from the base 2131 abuts against the injection molding machine, and the two guide blocks 2132 are connected to the injection molding machine. That is, when this connecting device is installed on the injection molding machine, the side of the support 214 away from the base 2131 is covered by the injection molding machine, thereby limiting the position of the clamping part 220 in the second direction Y, preventing it from detaching from the first receiving cavity 211, and the clamping part 220 can only move within the first receiving cavity 211.

[0035] In some examples, such as Figure 2 As shown, the guide block 2132 has a fixing hole 21321, which is arranged along the second direction Y, and the opening of the fixing hole 21321 is located on the side of the guide block 2132 away from the base 2131. That is, the opening of the fixing hole 21321 faces the injection molding machine. The connection between the guide block 2132 and the injection molding machine is realized through the cooperation of the fixing hole 21321 and other fasteners. Because the support part 214 abuts against the base 2131, when the guide block 2132 is connected to the injection molding machine, the support part 214 is clamped between the base 2131 and the injection molding machine. At the same time, the two guide blocks 2132 can also limit the alignment accuracy between the support part 214 and the base 2131, preventing the support part 214 from deviating from the preset installation position.

[0036] In some embodiments, please refer to Figure 1 , Figure 3 and Figure 4 To improve the locking effect of the clamping assembly 200 on the top rod 100, in this embodiment, the clamping assembly 200 includes two clamping parts 220. Both clamping parts 220 are disposed between two guide blocks 2132 and are positioned opposite each other on both sides of the through hole 212 along the first direction X. The clamping parts 220 can move closer to or further away from the through hole 212 along the first direction X. Specifically, the two clamping parts 220 are symmetrically arranged with the through hole 212 as the center. The clamping of the top rod 100 is achieved by the two clamping parts 220 approaching each other and abutting against the top rod 100, and the clamping of the top rod 100 is released by the two clamping parts 220 moving away from each other.

[0037] In some embodiments, such as Figure 4 As shown, in a specific embodiment where the clamping part 220 is movable, the clamping part 220 includes a body 221 and an elastic member 222. The body 221 has a mounting groove 2211, which is located on the side of the body 221 near the support part 214; that is, the opening of the mounting groove 2211 is located on the side of the body 221 near the support part 214. The elastic member 222 is at least partially accommodated within the mounting groove 2211. The elastic member 222 is capable of driving the body 221 to move along a first direction X. Specifically, the body 221 moves in the first direction X through the elastic deformation of the elastic member 222.

[0038] It should be noted that the elastic element 222 can be a spring. When the push rod 100 passes through the through hole 212, the elastic element 222 does not undergo elastic deformation, and the distance between the two clamping parts 220 is smaller than the diameter of the through hole 212. When the push rod 100 needs to be locked, the push rod 100 will press the two clamping parts 220 away from the through hole 212 during assembly, thereby causing the elastic element 222 to undergo elastic deformation. Until the push rod 100 is inserted into the appropriate position, the deformed elastic element 222 will press the body 221 tightly against the outer circumference of the push rod 100 through continuous elastic force, forming an adaptive clamping effect. Even if the push rod 100 experiences slight shaking or dimensional deviation due to long-term use, the compensating force generated by the elastic deformation can still ensure the stability of the clamping state.

[0039] As can be seen from the above technical solution, the ease of operation of this embodiment is significantly improved. When the top rod 100 passes through the through hole 212, it can directly squeeze the clamping part 220 to deform the elastic element 222. After it is in place, no additional locking action is required. The elastic force automatically drives the body 221 to complete the locking, realizing self-locking and improving installation efficiency and convenience.

[0040] In some embodiments, please refer to Figure 5 The body 221 includes a first arcuate surface 2212 and a second arcuate surface 2213. The first arcuate surface 2212 is located on the side of the body 221 away from the support portion 214, and can fit against the outer peripheral surface of the push rod 100. Specifically, the curvature of the first arcuate surface 2212 is adapted to the outer peripheral surface of the push rod 100, which can maximize the contact area between the two. This not only enhances the friction during clamping and prevents relative sliding of the push rod 100 during high-frequency movement, but also disperses the clamping stress through surface contact, reduces wear on the surface of the push rod 100 caused by excessive local stress, and extends the service life of the push rod 100. The second arcuate surface 2213 is connected to the side of the first arcuate surface 2212 facing the support seat 213, and the side of the second arcuate surface 2213 away from the first arcuate surface 2212 is extended outward in a direction away from the push rod 100. Specifically, the first arc-shaped surface 2212 is designed to better fit the outer circumference of the body 221 and the top rod 100, resulting in a better locking effect on the top rod 100. The second arc-shaped surface 2213 is designed to facilitate the insertion of the top rod 100 and to provide some guidance for the top rod 100.

[0041] It should be noted that the second arc-shaped surfaces 2213 of the two clamping parts 220 form a frustum-shaped guide structure in space. The larger diameter end of the frustum faces the insertion direction of the ejector pin 100, while the smaller diameter end smoothly connects with the first arc-shaped surface 2212. When the ejector pin 100 passes through the through hole 212, there is no need to align the gap between the two clamping parts 220. The outwardly expanding curved surface of the frustum-shaped structure automatically guides the ejector pin 100 towards the center, gradually guiding it into the clamping area of ​​the first arc-shaped surface 2212 through the gradual change in the angle of the curved surface. This design significantly reduces the alignment difficulty during assembly, especially in scenarios with frequent mold changes. It reduces assembly time caused by operational errors and works in conjunction with the automatic locking function of the elastic element 222, further shortening the installation time of the ejector pin 100 and improving the overall mold change efficiency.

[0042] In some embodiments, please refer to Figure 2 , Figure 6 and Figure 9 To facilitate quick disassembly of the connecting device, the support base 213 has a first mounting hole 215. A guide block 2132 passes through the first mounting hole 215 in a third direction Z and communicates with a guide channel 2133. The connecting device also includes an unlocking member 300, which passes through the first mounting hole 215, with a portion of the unlocking member 300 located within the first receiving cavity 211. The unlocking member 300 is rotatable within the first mounting hole 215, allowing the portion of the unlocking member 300 located in the first receiving cavity 211 to abut against or be spaced apart from the two clamping portions 220.

[0043] It should be noted that when the push rod 100 needs to be locked, the portion of the unlocking member 300 located in the first receiving cavity 211 is spaced apart from both clamping portions 220. When the push rod 100 needs to be removed from the clamping assembly 200, the unlocking member 300 is rotated so that the portion of the unlocking member 300 located in the first receiving cavity 211 rotates to abut against the two clamping portions 220. During this process, the portion of the unlocking member 300 located in the first receiving cavity 211 pushes the two clamping portions 220 away from the through hole 212, thereby releasing the clamping portions 220 from the push rod 100. That is, the clamping portions 220 are forced to move away from the through hole 212 by mechanical thrust, releasing the clamping lock on the push rod 100. After disassembly is completed, the portion of the unlocking member 300 located in the first receiving cavity 211 is rotated to space apart from the two clamping portions 220, and the clamping portions 220 automatically reset under the action of the elastic member 222, waiting for the next locking.

[0044] In some embodiments, such as Figure 6As shown, the unlocking component 300 includes a pin 310 and a protrusion 320. The pin 310 is housed within a first mounting hole 215, and the protrusion 320 protrudes from the side of the pin 310 facing the first receiving cavity 211 and is located between the two clamping portions 220. The pin 310 is rotatable within the first mounting hole 215, causing the protrusion 320 to abut against or be spaced apart from the two clamping portions 220.

[0045] It should be noted that the pin 310 can fit into the first mounting hole 215, forming a stable rotational support. The wall of the first mounting hole 215 limits the circumferential movement of the pin 310, preventing axial displacement or detachment of the pin 310 during frequent operation, and ensuring that the rotation trajectory of the protrusion 320 is always within the preset area between the two clamping parts 220. The protrusion 320 is the part of the unlocking member 300 located in the first receiving cavity 211. When it is necessary to lock the push rod 100, the protrusion 320 is spaced apart from the two clamping parts 220; when it is necessary to remove the push rod 100 from the clamping assembly 200, by rotating the pin 310, the protrusion 320 is rotated to abut against the two clamping parts 220. During this process, the protrusion 320 pushes the two clamping parts 220 away from the through hole 212, thereby releasing the clamping parts 220 from the push rod 100.

[0046] In some embodiments, please refer to Figure 7 The protrusion 320 includes two locking surfaces 321 and two unlocking surfaces 322. The two locking surfaces 321 are arranged opposite to each other, and the two unlocking surfaces 322 are arranged opposite to each other. The two locking surfaces 321 are located between the two unlocking surfaces 322, and both locking surfaces 321 are connected to the two unlocking surfaces 322. That is, the two locking surfaces 321 and the two unlocking surfaces 322 are connected alternately in sequence. Specifically, the distance between the two locking surfaces 321 is less than or equal to the minimum distance between the two clamping parts 220, ensuring that the protrusion 320 will not interfere when locking the push rod 100; the distance between the two unlocking surfaces 322 is greater than the distance between the two locking surfaces 321, ensuring that the push rod 100 can be removed by moving the two clamping parts 220 away from the through hole 212; the distance between the two unlocking surfaces 322 is greater than or equal to the diameter of the through hole 212, ensuring that the protrusion 320 can completely separate the push rod 100 from the two clamping parts 220 when pressing the two clamping parts 220 away from the through hole 212. Furthermore, in the third direction Z, the size of the protrusion 320 needs to be smaller than the minimum distance between the opening of the first mounting hole 215 away from the second mounting hole 2142 and the through hole 212; thus ensuring that the protrusion 320 will not interfere with the insertion of the push rod 100. It should be noted that the minimum distance between the two clamping parts 220 refers to the shortest distance that the two clamping parts 220 can achieve when they are close to each other without elastic deformation of the elastic member 222.

[0047] Specifically, when the elastic element 222 in the two clamping portions 220 does not undergo elastic deformation, the protrusion 330 remains spaced apart from the two clamping portions 220, or the two clamping portions 220 are in contact with the two locking surfaces 321 of the protrusion 330. When the distance between the two locking surfaces 321 is less than the minimum distance between the two clamping portions 220, even if the elastic element 222 is in its natural state (undeformed), the two locking surfaces 321 of the protrusion 320 can still maintain a distance from the clamping portion 220. At this time, the protrusion 320 is completely in the avoidance position and will not interfere with the initial state of the clamping portion 220. This ensures that the clamping portion 220 can achieve adaptive locking purely by the deformation of the elastic element 222 when the push rod 100 is subsequently inserted. When the distance between the two locking surfaces 321 is equal to the minimum distance between the two clamping parts 220, the two clamping parts 220 are exactly in contact with the two locking surfaces 321 of the protrusion 320 when the elastic member 222 is not deformed. However, this contact is only a zero-pressure contact: since no additional thrust is applied, the elastic member 222 remains in a natural state, and the clamping parts 220 will not be pried open, nor will it affect the subsequent clamping action on the push rod 100.

[0048] In some embodiments, such as Figure 1 and Figure 2 As shown, the base 2131 has a clearance groove 21311, which is located on the side of the base 2131 facing the guide block 2132 and communicates with the first mounting hole 215. When the two clamping parts 220 abut against the top rod 100, a portion of the protrusion 320 is accommodated within the clearance groove 21311. Specifically, the clearance groove 21311 is designed to allow clearance for the protrusion 320, preventing interference between the protrusion 320 and the base 2131.

[0049] In some embodiments, please refer to Figure 8 The support portion 214 has a second mounting hole 2142, the diameter of which is smaller than the shaft diameter of the pin 310. It should be noted that the shaft diameter of the pin 310 refers to the maximum width of its cross-section. Because the diameter of the second mounting hole 2142 is smaller than the shaft diameter of the pin 310, when the pin 310 is housed in the first mounting hole 215, the support portion 214 can effectively block the pin 310 from one side, preventing it from detaching from the guide block 2132 near the second mounting hole 2142. This, combined with the circumferential limiting effect of the first mounting hole 215 on the pin 310, constitutes a double-fixing structure for the pin 310, ensuring that the pin 310 maintains a stable installation position during frequent rotation operations, without loosening or shifting. Meanwhile, the second mounting hole 2142 does not hinder the operation of the pin 310. The reserved space is just enough to meet the movement requirements of the pin 310 when it rotates, thus achieving a balance between the limit and the operating space.

[0050] In some examples, when the elastic members 222 in the two clamping portions 220 do not deform, the distance between the two clamping portions 220 is less than the diameter of the first mounting hole 215. That is, when the elastic members 222 do not deform, the two clamping portions 220 effectively block the pin 310 in the first mounting hole 215, preventing the pin 310 from disengaging from the side of the guide block 2132 away from the second mounting hole 2142. Then, by engaging with the second mounting hole 2142, the pin 310 is effectively limited at both ends, preventing it from disengaging from the guide block 2132.

[0051] In some embodiments, in order to facilitate the rotation of the pin 310, the unlocking member 300 further includes a protrusion 330. The protrusion 330 is disposed on the side of the pin 310 away from the protrusion 320. The protrusion 330 is at least partially inserted into the second mounting hole 2142, so that the operator can directly apply force to the protrusion 330 to rotate it without having to go deep into the device to find the operating point, thus simplifying the operation process.

[0052] The protrusion 330 has a third mounting hole 331, which is set along the first direction X. The opening of the third mounting hole 331 is located on the side of the protrusion 330 opposite to the pin 310. It should be noted that when a more effortless or precise rotation operation is required, an external tool (such as a wrench, screwdriver, etc.) can be inserted into the third mounting hole 331. The rotational torque is transmitted through the cooperation between the tool and the third mounting hole 331, easily achieving the rotation of the pin 310. This design not only meets the need for convenience in manual operation but also satisfies potential tool-assisted operation scenarios, greatly reducing the difficulty of operation. Especially in long-term, high-frequency maintenance and replacement work, it can effectively reduce the physical exertion of operators and improve work efficiency.

[0053] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0054] The foregoing has provided a detailed description of a connecting device provided in the embodiments of this application. Specific examples have been used in this application to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A connecting device, characterized in that, include: Top rod (100); The clamping assembly (200) includes a support member (210) and a clamping part (220). The support member (210) has a first receiving cavity (211) and a through hole (212). The through hole (212) communicates with the first receiving cavity (211). The push rod (100) passes through the through hole (212), and a portion of the push rod (100) is located in the first receiving cavity (211). The clamping part (220) is movably disposed in the first receiving cavity (211), and the clamping part (220) is movable along a first direction (X) to abut against or move away from the push rod (100).

2. The connecting device according to claim 1, characterized in that, The support member (210) includes: The support base (213) includes a base (2131) and two guide blocks (2132). The through hole (212) is opened on the base (2131). The two guide blocks (2132) are arranged opposite to each other on both sides of the through hole (212) and connected to the base (2131). The support (214) has a second receiving cavity (2141), and the two guide blocks (2132) are housed in the second receiving cavity (2141). The support (214) abuts against the base (2131) in the second direction (Y). The base (2131), the two guide blocks (2132) and the support (214) together form the first receiving cavity (211). Wherein, the first direction (X) intersects with the second direction (Y).

3. The connecting device according to claim 2, characterized in that, The guide block (2132) has a fixing hole (21321) which is arranged along the second direction (Y), and the opening of the fixing hole (21321) is located on the side of the guide block (2132) away from the base (2131).

4. The connecting device according to claim 2, characterized in that, The clamping assembly (200) includes two clamping parts (220), both of which are disposed between the two guide blocks (2132) and are disposed opposite to each other on both sides of the through hole (212) along the first direction (X). The clamping parts (220) can move closer to or further away from the through hole (212) along the first direction (X).

5. The connecting device according to claim 4, characterized in that, The clamping part (220) includes: The body (221) has a mounting groove (2211) with the opening of the mounting groove (2211) located on the side of the body (221) near the support (214); The elastic element (222) is at least partially accommodated within the mounting groove (2211); The elastic element (222) can drive the body (221) to move along the first direction (X).

6. The connecting device according to claim 5, characterized in that, The body (221) includes: The first arc-shaped surface (2212) is located on the side of the body (221) away from the support (214), and the first arc-shaped surface (2212) can fit against the outer peripheral surface of the top rod (100); The second arc-shaped surface (2213) is connected to the side of the first arc-shaped surface (2212) facing the support base (213), and the side of the second arc-shaped surface (2213) away from the first arc-shaped surface (2212) is arranged in a direction away from the top rod (100).

7. The connecting device according to claim 4, characterized in that, The support base (213) has a first mounting hole (215) that passes through a guide block (2132) in a third direction (Z); The connecting device further includes an unlocking member (300), which passes through the first mounting hole (215), and a portion of the unlocking member (300) is located within the first receiving cavity (211); the unlocking member (300) is rotatable within the first mounting hole (215) so that a portion of the unlocking member (300) located in the first receiving cavity (211) abuts against or is spaced apart from the two clamping portions (220); The first direction (X), the second direction (Y), and the third direction (Z) intersect each other.

8. The connecting device according to claim 7, characterized in that, The unlocking component (300) includes a pin (310) and a protrusion (320). The pin (310) is housed in the first mounting hole (215), and the protrusion (320) protrudes from the side of the pin (310) facing the first receiving cavity (211) and is located between the two clamping portions (220). The pin (310) can rotate within the first mounting hole (215) to drive the protrusion (320) to abut against or be spaced apart from the two clamping parts (220).

9. The connecting device according to claim 8, characterized in that, The protrusion (320) includes two locking surfaces (321) and two unlocking surfaces (322). The two locking surfaces (321) are arranged opposite to each other, and the two unlocking surfaces (322) are arranged opposite to each other. The two locking surfaces (321) are located between the two unlocking surfaces (322), and both locking surfaces (321) are connected to the two unlocking surfaces (322). The distance between the two locking surfaces (321) is less than or equal to the minimum distance between the two clamping parts (220), the distance between the two unlocking surfaces (322) is greater than the distance between the two locking surfaces (321), and the distance between the two unlocking surfaces (322) is greater than or equal to the diameter of the through hole (212).

10. The connecting device according to claim 9, characterized in that, The support (214) has a second mounting hole (2142), the diameter of which is smaller than the shaft diameter of the pin (310).

11. The connecting device according to claim 10, characterized in that, The unlocking component (300) further includes a protrusion (330), which is disposed on the side of the pin (310) opposite to the protrusion (320), and the protrusion (330) is at least partially inserted into the second mounting hole (2142); The protrusion (330) has a third mounting hole (331) which is provided along the first direction (X), and the opening of the third mounting hole (331) is located on the side of the protrusion (330) away from the pin (310).

12. The connecting device according to claim 8, characterized in that, The base (2131) has a clearance groove (21311), which is formed on the side of the base (2131) facing the guide block (2132), and the clearance groove (21311) communicates with the first mounting hole (215). When the two clamping parts (220) abut against the top rod (100), a portion of the protrusion (320) is accommodated in the relief groove (21311).

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