Pipe clamping device

Abstract

The utility model discloses a pipe clamping device which comprises a base, a first clamping seat and a second clamping seat, a clamping driving mechanism is arranged on the base, pipe clamping arms are arranged on the first clamping seat and the second clamping seat respectively, installation grooves are formed in the pipe clamping arms, at least two positioning strips used for being in contact with a tubular object are arranged on the installation grooves, and the positioning strips are arranged on the first clamping seat and the second clamping seat respectively. Each positioning strip is provided with a positioning surface in contact with a tubular object, and a self-adaptive connecting mechanism is arranged between each positioning strip and the corresponding tube clamping arm; according to the pipe clamping device, the installation groove is formed in the pipe clamping arm, the positioning strip making contact with the pipe-shaped object is arranged in the installation groove, the self-adaptive connecting mechanism is arranged between the positioning strip and the pipe clamping arm, the positioning strip makes contact with the pipe-shaped object in the clamping process, and the pipe-shaped object is clamped through the self-adaptive connecting mechanism. And the positioning surface on the positioning strip is always in contact with the tubular object, so that the tubular objects with different pipe diameters can be reliably clamped.

Description

Technical Field

[0001] The utility model relates to a pipe clamping device. Background Art

[0002] When conducting an experiment, it is necessary to clamp the test tubes in a row on the tube clamping device, and then use a pipette to inject reagents into the test tubes for the experiment; test tubes of different specifications are often used in the experiment. The existing tube clamping device usually sets a pair of tube clamping arms on two clamping seats that can be opened and closed with each other, and V-shaped mounting grooves are set on the two tube clamping arms. Although the V-shaped mounting groove can position test tubes of different diameters, there is line contact between the tube clamping arms and the test tubes. When clamping the test tubes in a row, some clamping forces are insufficient, and some clamping forces are too large, which requires high clamping accuracy and high cost.

[0003] The utility model is proposed in view of the deficiencies in the prior art. Utility Model Content

[0004] In view of the technical problem that when clamping test tubes in a row for experiments in the above-mentioned prior art, the existing tube clamping device is difficult to meet the requirements of clamping test tubes of different diameters, and the clamping force is also difficult to balance.

[0005] The utility model adopts a technical solution to solve its technical problems: a tube clamping device, comprising: a base, a first clamping seat and a second clamping seat, the base is provided with a clamping drive mechanism for driving the first clamping seat and the second clamping seat to perform a clamping action, the first clamping seat and the second clamping seat are respectively provided with tube clamping arms that cooperate with each other to clamp the tubular object, the tube clamping arm is provided with a mounting groove, the mounting groove is provided with at least two positioning strips for contacting the tubular object, each of the positioning strips is provided with a positioning surface for contacting the tubular object, and an adaptive connection mechanism is provided between the positioning strip and the tube clamping arm for keeping the positioning surface on the positioning strip in contact with the tubular object at all times.

[0006] A tube clamping device as described above, the adaptive connection mechanism comprises: a positioning hole set on the tube clamping arm, the positioning hole is provided with a locking rod for locking the positioning bar on the positioning hole, one end of the locking rod is connected to the positioning bar, the middle part of the locking rod is connected to the positioning hole, the other end of the locking rod is provided with a limiting part for preventing the locking rod from loosening from the positioning hole, the inner diameter of the positioning hole is larger than the diameter of the locking rod, and an elastic reset member is provided between the tube clamping arm and the positioning bar.

[0007] In the pipe clamping device as described above, the elastic reset member is a spring, one end of the positioning hole is provided with a stepped hole for accommodating the spring, and the spring is sleeved on the locking rod.

[0008] In the pipe clamping device as described above, the cross section of the installation groove is arc-shaped, and the positioning strips are evenly distributed in the installation groove.

[0009] In the pipe clamping device as described above, the installation groove is provided with a receiving groove corresponding to the positioning strip one by one, and the width of the receiving groove is greater than the width of the positioning strip.

[0010] In the pipe clamping device as described above, the base is provided with a first guide rail, the first clamping seat is slidably connected to the first guide rail, the base is provided with a second guide rail, and the second clamping seat is slidably connected to the second guide rail.

[0011] In the pipe clamping device as described above, a guide surface is provided at the upper end of the positioning strip.

[0012] A pipe clamping device as described above, the clamping drive mechanism comprises: a pushing seat, a left toggle arm, a left connecting rod, a left toggle column, a right toggle arm, a right connecting rod and a right toggle column, the pushing seat is slidably connected to the base; the middle part of the left toggle arm is rotatably connected to the base, one end of the left connecting rod is hinged to the pushing seat, the other end of the left connecting rod is hinged to the left toggle arm, one end of the left toggle column is connected to the left toggle arm, and the other end of the left toggle column is connected to the first clamping seat; the middle part of the right toggle arm is rotatably connected to the base, one end of the right connecting rod is hinged to the pushing seat, the other end of the right connecting rod is hinged to the right toggle arm, one end of the right toggle column is connected to the right toggle arm, and the other end of the right toggle column is connected to the second clamping seat; the base is also provided with a driver for driving the pushing seat to move.

[0013] The beneficial effects of the utility model are:

[0014] 1. The tube clamping device of the utility model is provided with a mounting groove on the tube clamping arm, and a positioning strip in contact with the tubular object is provided in the mounting groove, and an adaptive connection mechanism is provided between the positioning strip and the tube clamping arm. When clamping, the positioning strip contacts the tubular object, and under the action of the adaptive connection mechanism, the positioning surface on the positioning strip always keeps in contact with the tubular object, which can ensure that tubular objects (test tubes) of different diameters can be reliably clamped.

[0015] 2. The inner diameter of the positioning hole is larger than the diameter of the locking rod, so that the positioning bar can swing relative to the pipe clamping arm, and can automatically adapt to tubular objects of different diameters, so that the positioning surface on the positioning bar and the tubular object always maintain contact.

[0016] The utility model will be further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a structural schematic diagram of the pipe clamping device of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the tube clamping arm of the tube clamping device in the utility model;

[0019] Figure 3 It is a three-dimensional cross-sectional schematic diagram of the tube clamping arm of the tube clamping device in the utility model;

[0020] Figure 4 for Figure 3 An enlarged view of the portion marked A in FIG.

[0021] Figure 5 It is a schematic diagram of the top view of the structure of the tube clamping arm of the tube clamping device in the utility model;

[0022] Figure 6 It is an exploded schematic diagram of the pipe clamping device of the utility model;

[0023] Figure 7 It is a structural schematic diagram of the clamping drive mechanism of the pipe clamping device in the utility model. DETAILED DESCRIPTION

[0024] The implementation modes of the present utility model are described in detail below in conjunction with the accompanying drawings.

[0025] like Figures 1 to 7 As shown, a tube clamping device of the present embodiment comprises: a base 1, a first clamping seat 2 and a second clamping seat 3, the base 1 is provided with a clamping driving mechanism 4 for driving the first clamping seat 2 and the second clamping seat 3 to perform a clamping action, the first clamping seat 2 and the second clamping seat 3 are respectively provided with tube clamping arms 5 that cooperate with each other for clamping the tubular object, the tube clamping arm 5 is provided with a mounting groove 51, the mounting groove 51 is provided with at least two positioning strips 52 for contacting the tubular object, each of the positioning strips 52 is provided with a positioning surface 520 for contacting the tubular object, and an adaptive connection mechanism 53 is provided between the positioning strips 52 and the tube clamping arm 5 for keeping the positioning surface 520 on the positioning strip 52 in contact with the tubular object at all times. The tube clamping device of the utility model is provided with a mounting groove on the tube clamping arm, and a positioning strip in contact with the tubular object is provided in the mounting groove, and an adaptive connection mechanism is provided between the positioning strip and the tube clamping arm. When clamping, the positioning strip contacts the tubular object, and under the action of the adaptive connection mechanism, the positioning surface on the positioning strip always keeps in contact with the tubular object, which can ensure that tubular objects (test tubes) of different diameters can be reliably clamped.

[0026] In this embodiment, the adaptive connection mechanism 53 comprises: a positioning hole 531 provided on the tube clamp arm 5, a locking rod 532 for locking the positioning bar 52 on the positioning hole 531, one end of the locking rod 532 is connected to the positioning bar 52, the middle part of the locking rod 532 is connected to the positioning hole 531, the other end of the locking rod 532 is provided with a limiting portion 5321 for preventing the locking rod 532 from being loosened from the positioning hole 531, the inner diameter of the positioning hole 531 is larger than the diameter of the locking rod 532, and an elastic reset member 533 is provided between the tube clamp arm 5 and the positioning bar 52. In this embodiment, the inner diameter of the positioning hole is larger than the diameter of the locking rod, so that the positioning bar can swing relative to the tube clamp arm, can automatically adapt to tubular objects of different diameters, and keep the positioning surface on the positioning bar in contact with the tubular object at all times.

[0027] In this embodiment, in order to facilitate assembly, the elastic reset member 533 is a spring, and one end of the positioning hole 531 is provided with a stepped hole 534 for accommodating the spring, and the spring is sleeved on the locking rod 532 .

[0028] In this embodiment, in order to adapt to the clamping of tubular objects with different diameters, the cross section of the installation groove 51 is arc-shaped, and the positioning strips 52 are evenly distributed in the installation groove 51.

[0029] In this embodiment, the mounting groove 51 is provided with a receiving groove 535 corresponding to the positioning strip 52. The width of the receiving groove 535 is greater than the width of the positioning strip 52, so that the positioning strip can swing left and right ( Figure 5 for reference).

[0030] In this embodiment, a first guide rail 11 is provided on the base 1, and the first clamping seat 2 is slidably connected to the first guide rail 11. A second guide rail 12 is provided on the base 1, and the second clamping seat 3 is slidably connected to the second guide rail 12.

[0031] A guide surface 521 is provided at the upper end of the positioning strip 52 to facilitate guiding the tubular object into between the positioning strips.

[0032] In this embodiment, the clamping drive mechanism 4 includes: a pushing seat 41, a left toggle arm 42, a left connecting rod 43, a left toggle column 44, a right toggle arm 45, a right connecting rod 46 and a right toggle column 47, wherein the pushing seat 41 is slidably connected to the base 1; the middle part of the left toggle arm 42 is rotatably connected to the base 1, one end of the left connecting rod 43 is hinged on the pushing seat 41, the other end of the left connecting rod 43 is hinged on the left toggle arm 42, and one end of the left toggle column 44 is connected to the left toggle arm 42, the other end of the left toggle column 44 is connected to the first clamping seat 2; the middle part of the right toggle arm 45 is rotatably connected to the base 1, one end of the right connecting rod 46 is hinged on the pushing seat 41, the other end of the right connecting rod 46 is hinged on the right toggle arm 45, one end of the right toggle column 47 is connected to the right toggle arm 45, and the other end of the right toggle column 47 is connected to the second clamping seat 3; the base 1 is also provided with a driver 48 for driving the pushing seat 41 to move. The driver 48 can be a cylinder, which drives the pushing seat 41 to move and drives the left connecting rod and the right connecting rod to move at the same time, thereby driving the left toggle arm and the right toggle arm to rotate to realize the opening and closing action of the first clamping seat 2 and the second clamping seat 3.

[0033] The above examples are only used to further illustrate the technical content of the utility model, so that readers can understand it more easily, but it does not mean that the implementation methods of the utility model are limited to this. Any technical extension or re-creation made based on the utility model is protected by the utility model. The protection scope of the utility model shall be based on the claims.

Claims

1. A pipe clamping device, characterized in that: include: A base (1), a first clamping seat (2) and a second clamping seat (3); the base (1) is provided with a clamping drive mechanism (4) for driving the first clamping seat (2) and the second clamping seat (3) to perform a clamping action; the first clamping seat (2) and the second clamping seat (3) are respectively provided with clamping arms (5) that cooperate with each other to clamp the tubular object; the clamping arms (5) are provided with mounting grooves (51); the mounting grooves (51) are provided with at least two positioning strips (52) for contacting the tubular object; each positioning strip (52) is provided with a positioning surface (520) for contacting the tubular object; an adaptive connection mechanism (53) is provided between the positioning strip (52) and the clamping arm (5) for keeping the positioning surface (520) on the positioning strip (52) in contact with the tubular object.

2. A pipe clamping device according to claim 1, characterized in that: The adaptive connection mechanism (53) comprises: a positioning hole (531) provided on the tube clamping arm (5); a locking rod (532) for locking the positioning strip (52) on the positioning hole (531); one end of the locking rod (532) is connected to the positioning strip (52); the middle part of the locking rod (532) is connected to the positioning hole (531); the other end of the locking rod (532) is provided with a limiting portion (5321) for preventing the locking rod (532) from being loosened from the positioning hole (531); the inner diameter of the positioning hole (531) is larger than the diameter of the locking rod (532); and an elastic reset member (533) is provided between the tube clamping arm (5) and the positioning strip (52).

3. A pipe clamping device according to claim 2, characterized in that: The elastic reset member (533) is a spring, one end of the positioning hole (531) is provided with a stepped hole (534) for accommodating the spring, and the spring is sleeved on the locking rod (532).

4. A pipe clamping device according to claim 2, characterized in that: The cross section of the installation groove (51) is arc-shaped, and the positioning strips (52) are evenly distributed in the installation groove (51).

5. A pipe clamping device according to claim 2, characterized in that: The installation groove (51) is provided with a receiving groove (535) corresponding to the positioning strip (52) one by one, and the width of the receiving groove (535) is greater than the width of the positioning strip (52).

6. A pipe clamping device according to claim 1, characterized in that: The base (1) is provided with a first guide rail (11), the first clamping seat (2) is slidably connected to the first guide rail (11), the base (1) is provided with a second guide rail (12), and the second clamping seat (3) is slidably connected to the second guide rail (12).

7. A pipe clamping device according to claim 1, characterized in that: The upper end of the positioning strip (52) is provided with a guide surface (521).

8. A pipe clamping device according to any one of claims 1 to 7, characterized in that: The clamping drive mechanism (4) comprises: a pushing seat (41), a left toggle arm (42), a left connecting rod (43), a left toggle column (44), a right toggle arm (45), a right connecting rod (46) and a right toggle column (47); the pushing seat (41) is slidably connected to the base (1); the middle part of the left toggle arm (42) is rotatably connected to the base (1); one end of the left connecting rod (43) is hinged to the pushing seat (41); the other end of the left connecting rod (43) is hinged to the left toggle arm (42); one end of the left toggle column (44) is connected to the left toggle arm (45); (42), the other end of the left toggle column (44) is connected to the first clamping seat (2); the middle part of the right toggle arm (45) is rotatably connected to the base (1), one end of the right connecting rod (46) is hinged on the pushing seat (41), the other end of the right connecting rod (46) is hinged on the right toggle arm (45), one end of the right toggle column (47) is connected to the right toggle arm (45), and the other end of the right toggle column (47) is connected to the second clamping seat (3); the base (1) is also provided with a driver (48) for driving the pushing seat (41) to move.

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