A fixture structure, a hanger and a conveying device

Abstract

The clamp structure, hanger, and conveying device provided by the present invention include two claw arms hinged to each other and symmetrically arranged relative to a fixed plate, and at least one compression spring arranged between any claw arm and the surface of the opposite fixed plate to apply a clamping force to the two claw arms. The claw arm is provided with a relief portion that passes through the claw arm in the direction of extension and contraction of the compression spring. A mounting structure is fixed to the claw arm and provided with a mounting portion for fixing one end of the compression spring, the mounting portion being arranged in the relief portion. Due to the provision of the relief portion, the compression spring can pass directly through the relief portion and be fixed to the fixed plate at one end during installation. In this case, there is no elastic biasing force on the compression spring. The mounting portion corresponds to the free end of the compression spring, presses the mounting structure along the direction of extension and contraction of the compression spring to compress the compression spring, and simultaneously fixes the mounting structure to the claw arm. The compression spring is simple and quick to install.

Description

Technical Field

[0001] The present invention relates to the technical field of clamps, and in particular to a clamp structure, a hanger and a conveying device. Background Art

[0002] There is a hanger on the market for clamping and suspending workpieces, which has multiple clamps on the hanger, each clamp is hinged on a fixed plate, and the two claw arms of the clamp are symmetrically arranged about the fixed plate, and the two claw arms are hinged to each other. Positioning installation grooves are provided on the wall surface of the two claw arms facing the side of the fixed plate surface, and corresponding positioning pins are provided on the plate surface of the fixed plate corresponding to the positioning installation grooves. One end of the spring is sleeved on the positioning pin, and the other end is fixed in the positioning installation groove. Under normal circumstances, under the action of the elastic bias force of the spring, the two claw arms are stretched away from the fixed plate, and drive the chucks located at the same side ends of the two claw arms to clamp the workpiece. When opening the chuck, the two claw arms need to be pressed toward the fixed plate to overcome the elastic bias force of the spring.

[0003] However, in the above-mentioned clamp structure, the elastic biasing force when the spring expands the claw arm to its maximum width under normal conditions is used to provide the chuck with gripping and suspending the workpiece. Therefore, when the spring expands the claw arm to its maximum width, the spring remains in a compressed state, exerting a certain degree of elastic biasing force. When installing the spring between the fixed plate and the claw arm, one end of the spring must first be placed over the locating pin on the fixed plate, and then the other end of the spring must be compressed in a direction perpendicular to the surface of the fixed plate and simultaneously pushed along the direction extending from the fixed plate surface into the locating mounting groove formed on the claw arm. Due to the high elastic biasing force during the compressed installation of the spring, installation is difficult, resulting in low work efficiency. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the difficulty in installing the spring in the existing clamp and the low efficiency of loading and unloading.

[0005] To this end, the present invention proposes a clamp structure comprising: two claw arms hinged to each other and symmetrically arranged relative to a fixed plate, and at least one compression spring arranged between any claw arm and the opposite surface of the fixed plate to apply a clamping force to the two claw arms;

[0006] The claw arm is provided with a yielding portion penetrating the claw arm in the extension and contraction direction of the compression spring;

[0007] The mounting structure is fixed on the claw arm and is provided with a mounting portion for fixing one end of the compression spring; the mounting portion is arranged in the yielding portion.

[0008] The yielding portions are symmetrically distributed on both sides of the claw arm.

[0009] The mounting structure includes:

[0010] A mounting plate, with the mounting parts respectively provided at both ends thereof;

[0011] The mounting plate is fixed on the claw arm and two ends thereof are respectively arranged corresponding to the yielding portions.

[0012] The mounting plate is in a polygonal shape; the mounting parts are distributed at both ends of the polygonal shape of the mounting plate; and the groove cover of the mounting plate is arranged on the claw arm.

[0013] Also includes:

[0014] A connecting piece is provided corresponding to the mounting portion in a one-to-one manner; the connecting piece is arranged between the mounting plate and the claw arm, and is fixedly connected to both the mounting plate and the claw arm.

[0015] Also includes:

[0016] a matching portion, arranged on the claw arm corresponding to the connecting member;

[0017] The connecting member is fixed on the matching portion.

[0018] The matching portion includes two connecting arms; the two connecting arms are spaced apart to form the yielding portion;

[0019] The middle portion of the connecting member is fixedly connected to the mounting plate; and both ends of the connecting member are correspondingly connected to the two connecting arms.

[0020] The two connecting arms and the two ends of the mounting plate are spaced apart in the expansion and contraction direction of the compression spring; and the connecting piece is arranged between the two connecting arms and the mounting plate.

[0021] The connecting piece is a connecting plate.

[0022] The present invention provides a hanger comprising at least one of the above-mentioned clamp structures.

[0023] The present invention provides a conveying device comprising at least one of the above-mentioned hangers.

[0024] The technical solution of the present invention has the following advantages:

[0025] 1. The clamp structure provided by the present invention includes two claw arms hinged to each other and symmetrically arranged relative to a fixed plate, and at least one compression spring arranged between any claw arm and the plate surface of the opposite fixed plate to apply a clamping force to the two claw arms. The claw arm is provided with a relief portion that passes through the claw arm in the direction of extension and contraction of the compression spring. The mounting structure is fixed to the claw arm and is provided with a mounting portion for fixing one end of the compression spring. The mounting portion is disposed in the relief portion. Due to the provision of the relief portion, the compression spring can pass directly through the relief portion and be fixed to the fixed plate at one end during installation. At this time, there is no elastic biasing force on the compression spring. The mounting portion corresponds to the free end of the compression spring, presses the mounting structure along the direction of extension and contraction of the compression spring to compress the compression spring, and simultaneously fixes the mounting structure to the claw arm. The compression spring is simple and quick to install.

[0026] 2. The clamp structure provided by the present invention has two connecting arms and two ends of the mounting plate spaced apart in the extension and contraction direction of the compression spring, and a connecting piece is arranged between the two connecting arms and the mounting plate. The compression spring has an elastic biasing force on the mounting plate to separate from the yielding portion. The elastic biasing force causes the mounting plate to press against the connecting piece, and at the same time causes the connecting piece to press against the two connecting arms located on the claw arms. Even if the connecting screws between the mounting plate and the connecting piece fall off, since the connecting piece is fixed to the claw arms on both sides, it still plays an effective limiting role on the mounting plate in the extension and contraction direction of the compression spring, and the compression spring is fixed more firmly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is a structural schematic diagram of a clamp structure and a hanger implementation method in the present invention;

[0029] Figure 2 It is a schematic diagram of the partial structure of the clamp structure in the present invention;

[0030] Figure 3 Schematic diagram of the structure of the claw arm in the present invention;

[0031] Figure 4 It is a structural schematic diagram of the mounting plate in the present invention;

[0032] Figure 5 It is a structural schematic diagram of the connecting plate in the present invention.

[0033] Description of reference numerals:

[0034] 1. Fixed plate; 2. Claw arm; 21. Yield portion; 22. Connecting arm; 3. Compression spring; 4. Mounting plate; 41. Mounting slot; 5. Connecting plate. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0038] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] Example 1

[0040] This embodiment provides a clamp structure such as Figure 1 As shown, it includes two claw arms 2 that are hinged to each other and symmetrically arranged relative to the fixed plate 1, and at least one compression spring 3 arranged between any claw arm 2 and the plate surface of the opposite fixed plate 1 to apply a clamping force to the two claw arms 2. In this embodiment, two compression springs 3 are correspondingly arranged for one claw arm 2, and a yield portion 21 that passes through the claw arm 2 is provided on the claw arm 2 in the extension and contraction direction of the compression spring 3. The mounting structure is fixed on the claw arm 2, and a mounting portion for fixing one end of the compression spring 3 is provided thereon, and the mounting portion is provided in the yield portion 21.

[0041] like Figure 3As shown, the yielding portions 21 are symmetrically distributed on both sides of the claw arm 2, and the mounting structure includes a mounting plate 4. In this embodiment, as shown in FIG. Figure 4 As shown, mounting plate 4 is generally shaped like a polygon, with two mounting portions located at either end of the polygon. The groove of mounting plate 4 is located on claw arm 2, and the middle portion of mounting plate 4 is secured to claw arm 2 via fasteners, such as conventional screws or bolts. In this embodiment, the mounting portion is a mounting groove 41. One end of compression spring 3 is secured to a positioning pin (not shown) on fixing plate 1, while the other end is secured within the corresponding mounting groove 41.

[0042] During installation, the claw arm 2 is hingedly mounted on the fixed plate 1, and the two compression springs 3 are directly passed through the clearance portion 21 and sleeved on the corresponding positioning pins. At this time, there is no elastic bias on the compression spring 3. The mounting grooves 41 at both ends of the mounting plate 4 correspond to the free ends of the compression spring 3. The mounting plate 4 is pressed onto the claw arm 2 along the extension and contraction direction of the compression spring 3 and fixed to the claw arm 2 via fasteners to complete the installation of the compression spring 3. The disassembly process is the reverse process of the installation process. The compression spring 3 can be easily detached by simply removing the mounting plate 4. During the loading and unloading process, there is no need to compress the compression spring 3 while pushing it into the mounting groove 41 or removing it from the mounting groove 41 along the extension direction of the plate surface of the fixed plate 1. This greatly reduces the difficulty of installing the compression spring 3 and improves the loading and unloading efficiency.

[0043] As a first replaceable implementation of Example 1, one claw arm 2 can correspond to only one compression spring 3, and the compression spring 3 is correspondingly arranged at the center position of the claw arm 2. Accordingly, one giving way portion 21 is arranged, and the giving way portion 21 is a through hole opened in the center of the claw arm 2. One mounting groove 41 is correspondingly arranged, which is located in the middle section of the mounting plate 4 and on the side wall facing away from the slot. The middle section of the mounting plate 4 is cooperatively arranged in the corresponding through hole, and the two ends of the mounting plate 4 are respectively fixed on the claw arms 2 on both sides of the through hole.

[0044] Example 2

[0045] This embodiment provides a clamp structure, which is different from the clamp structure in embodiment 1 in that: Figure 1 or Figure 2 As shown, a connecting plate 5 corresponding to the mounting portion is provided, and a matching portion corresponding to the connecting plate 5 is provided on the claw arm 2, as shown in FIG. Figure 3 As shown, in this embodiment, the matching portion includes two connecting arms 22, the two connecting arms 22 are directly formed on the claw arm 2, and the two connecting arms 22 are spaced apart to form a clearance groove, thereby forming a clearance portion 21. The two ends of the several-shaped mounting plate 4 are correspondingly installed in the clearance groove, and the connecting member is arranged between the mounting plate 4 and the claw arm 2 and is fixedly connected to the mounting plate 4 and the claw arm 2. In this embodiment, as shown in FIG. Figure 5 As shown, the connecting member is a connecting plate 5. Figure 1or Figure 2 As shown, the two connecting arms 22 and the two ends of the mounting plate 4 fixed on the claw arm 2 are spaced apart in the extension and contraction direction of the compression spring 3, and the connecting plate 5 is arranged between the two spaced connecting arms 22 and the ends of the mounting plate 4. The middle part of the connecting plate 5 is fixed on the mounting plate 4, and the two ends are respectively fixed on the two connecting arms 22.

[0046] The connecting plate 5 is arranged between the two connecting arms 22 and the mounting plate 4. The compression spring 3 has an elastic biasing force on the mounting plate 4 to make it disengage from the yielding portion 21. The elastic biasing force causes the mounting plate 4 to press against the connecting plate 5, and at the same time causes the connecting plate 5 to press against the two connecting arms 22 located on the claw arms 2. Even if the connecting screws between the mounting plate 4 and the connecting plate 5 fall off, since the connecting plate 5 is fixed to the claw arms 2 on both sides, it still plays an effective limiting role on the mounting plate 4 in the extension and contraction direction of the compression spring 3, and the compression spring 3 is fixed more firmly.

[0047] As a first replaceable implementation of Example 2, the two connecting arms 22 of any mating part and one end of its corresponding mounting plate 4 are located in the same plane, and the connecting plate 5 is fixedly connected to the mounting plate 4 and the connecting arm 22 respectively and is located on the same side of the connecting arm 22 and the mounting plate 4.

[0048] Example 3

[0049] This embodiment provides a hanger, comprising at least one clamp structure according to embodiment 1 or embodiment 2.

[0050] Example 4

[0051] This embodiment provides a conveying device, comprising at least one hanger according to embodiment 3.

[0052] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A clamp structure comprising: Two claw arms (2) hinged to each other and symmetrically arranged relative to the fixed plate (1), and at least one compression spring (3) arranged between any claw arm (2) and the plate surface of the fixed plate (1) facing the claw arm (2) for applying a clamping force to the two claw arms (2); It is characterized by: A yielding portion (21) is provided on the claw arm (2) in the extension and contraction direction of the compression spring (3) and passes through the claw arm (2); A mounting structure is fixed on the claw arm (2), and is provided with a mounting portion for fixing one end of the compression spring (3); the mounting portion is arranged in the yielding portion (21); The mounting structure includes: A mounting plate (4), with the mounting portions respectively provided at both ends thereof; The mounting plate (4) is fixed on the claw arm (2) and has two ends respectively arranged corresponding to the yielding portions (21); The clamp structure further comprises a connecting member, which is arranged between the mounting plate (4) and the claw arm (2) and is fixedly connected to both the mounting plate (4) and the claw arm (2); The mounting plate (4) is in a polygonal shape; the mounting portions are distributed at both ends of the polygonal shape of the mounting plate (4); the slot housing of the mounting plate (4) is provided on the claw arm (2), and the middle portion of the mounting plate (4) is fixed to the claw arm (2) via a fastener; The connecting member is provided in a one-to-one correspondence with the mounting portion; The fixture structure further includes: A matching portion, arranged on the claw arm (2) corresponding to the connecting piece; The connecting member is fixed on the matching portion; The matching portion comprises two connecting arms (22); the two connecting arms (22) are spaced apart to form the yielding portion (21); The middle portion of the connecting member is fixedly connected to the mounting plate (4); the two ends of the connecting member are respectively connected to the two connecting arms (22); the two ends of the connecting arms (22) and the mounting plate (4) are spaced apart in the expansion and contraction direction of the compression spring (3); and the connecting member is arranged between the two connecting arms (22) and the mounting plate (4).

2. The clamp structure according to claim 1, characterized in that: The evacuation portions (21) are symmetrically distributed on both sides of the claw arm (2).

3. The clamp structure according to claim 1, characterized in that: The connecting piece is a connecting plate (5).

4. A hanger, characterized in that: The invention comprises at least one clamp structure according to any one of claims 1 to 3.

5. A conveying device, characterized in that: The invention comprises at least one hanger according to claim 4.

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