Manual-automatic integrated tension testing machine

Abstract

The utility model discloses a manual and automatic integrated tension testing machine which comprises a rack, a lifting screw rod is arranged on the rack, the lifting screw rod is connected with a driving mechanism, a split nut assembly is arranged on the lifting screw rod, the split nut assembly is connected with a movable clamp holder, a fixed clamp holder fixed on the rack is arranged right above the movable clamp holder, and a clamping device is arranged right above the fixed clamp holder. A tension sensor is arranged on the fixed clamp holder, and an automatic extension measuring device and a manual extension measuring device are arranged on the two sides of the lifting lead screw respectively. According to the utility model, the split nut assembly is arranged, after the test is completed, the mobile clamp holder is enabled to quickly return by operating the split nut assembly, then the test of a next sample can be carried out, the test is quick and quick, the manual extension measuring device is arranged, the test data of the automatic extension measuring device is verified, and the accuracy of the data test is improved.

Description

Technical Field

[0001] The utility model belongs to the field of tension testing machines, in particular to a manual and automatic tension testing machine. Background Art

[0002] The microcomputer tensile testing machines currently sold in the industry clamp the specimen between the two chucks of the tensile testing machine fixture. When the two chucks make relative movement, the force sensor on the moving chuck and the displacement sensor built into the machine can collect the force and displacement changes during the test, thereby calculating the specimen's tensile, tearing, deformation rate and other performance indicators.

[0003] Microcomputer tensile testing machines can meet basic testing requirements, but they still have many defects when used in specific industries: For example, in the silicone production industry, due to the large deformation rate of silicone, the stretching stroke is long during the test. After the test piece is broken, the mobile clamp automatically returns. Since the screw drive takes a long time to return, each test needs to wait for a long time before the next test can be carried out, and the test efficiency is low. In addition, in the elongation test, since silicone and other large deformation samples are stretched, the deformation is large, it is easy to appear that the clamping device slips due to the continuous stretching of the sample, which makes it difficult to identify when the data is low or the transmission is abnormal. Utility Model Content

[0004] In order to overcome the shortcomings and problems of the prior art, the utility model provides a manual and automatic tensile testing machine, which can quickly return manually after the measurement is completed to improve the test efficiency, and can verify the test data of the elongation through a manual elongation measuring device to improve the accuracy of the data test.

[0005] The utility model is realized by the following technical solutions:

[0006] A manual-automatic tensile testing machine comprises a frame, a lifting screw rod is provided on the frame, the lifting screw rod is connected to a driving mechanism, an opening and closing nut assembly is provided on the lifting screw rod, the opening and closing nut assembly is connected to a mobile clamp, a fixed clamp fixed to the frame is provided directly above the mobile clamp, a tensile sensor is provided on the fixed clamp, and an automatic elongation measuring device and a manual elongation measuring device are respectively provided on both sides of the lifting screw rod.

[0007] The automatic elongation measuring device comprises an automatic measuring slide rod, on which two automatic tracking clamps are arranged, and both automatic tracking clamps are connected with a measuring pull line.

[0008] The automatic tracking clamp comprises a slide seat, the slide seat is connected with a fixed clamp head, and the fixed clamp head is connected with a movable clamp head through a rebound mechanism.

[0009] The manual elongation measuring device comprises a manual measuring slide rod, on which two positioning pointers are arranged, and a measuring ruler is connected to the positioning pointer at the bottom.

[0010] The opening and closing nut assembly is connected with an operating handle for operating the opening and closing of the opening and closing nut.

[0011] A dust-proof curtain for shielding the lifting screw rod is arranged on the outer side of the lifting screw rod.

[0012] The split nut assembly is connected with a steel rope, a pulley is arranged on the top of the frame, the steel rope is wound around the pulley and is connected with a sliding counterweight block.

[0013] The utility model is provided with an opening and closing nut assembly. After the test is completed, the mobile clamp can be quickly returned to its position by operating the opening and closing nut assembly, so that the test of the next sample can be carried out quickly and efficiently. A manual elongation measuring device is provided to verify the test data of the automatic elongation measuring device, thereby improving the accuracy of the data test. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model;

[0016] Figure 3 It is a schematic diagram of the internal three-dimensional structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the lifting screw rod in the utility model;

[0018] Figure 5 It is a structural schematic diagram of the automatic elongation measuring device in the utility model;

[0019] Figure 6 It is a schematic diagram of the structure of the automatic tracking clip in the utility model;

[0020] Figure 7 It is a structural schematic diagram of the manual elongation measuring device in the utility model.

[0021] In the figure: 1-frame, 2-lifting screw, 3-driving mechanism, 4-opening and closing nut assembly, 41-operating handle, 5-movable clamp, 6-fixed clamp, 61-tension sensor, 7-automatic elongation measuring device, 71-automatic measuring slide rod, 72-automatic tracking clamp, 721-slide seat, 722-fixed chuck, 723-movable chuck, 724-rebound mechanism, 73-measuring wire, 8-manual elongation measuring device, 81-manual measuring slide rod, 82-positioning pointer, 83-measuring ruler, 9-steel rope, 10-pulley, 11-sliding counterweight, 12-dust curtain. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of those skilled in the art, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a manual and automatic tensile testing machine includes a frame 1, a lifting screw 2 is provided on the frame 1, and the lifting screw 2 is connected to a driving mechanism 3, and the driving mechanism 3 can drive the lifting screw 2 to rotate. In order to prevent dust from entering the lifting screw 2, a dust curtain 12 is provided on the outer side of the lifting screw 2 to block the lifting screw 2.

[0024] The lifting screw 2 is provided with an opening and closing nut assembly 4, the core component of which is the opening and closing nut. The opening and closing action of the opening and closing nut can realize the separation and combination of the opening and closing nut and the lifting screw 2. When the opening and closing nut is opened, the opening and closing nut assembly 4 can move up and down at will. When the opening and closing nut is closed, the up and down movement of the opening and closing nut assembly 4 can only be driven by the rotation of the lifting screw 2. The opening and closing nut assembly 4 is connected to an operating handle 41 for operating the opening and closing of the opening and closing nut, and the opening and closing of the opening and closing nut can be operated by the operating handle 41.

[0025] The opening and closing nut assembly 4 is connected to a mobile clamp 5, and the up and down movement of the opening and closing nut assembly 4 drives the movement of the mobile clamp 5. A fixed clamp 6 fixed to the frame 1 is provided directly above the mobile clamp 5, and a tension sensor 61 is provided on the fixed clamp 6. The tension sensor 61 is used to collect tension data. During the test, one end of the test piece is clamped on the fixed clamp 6, and the other end is clamped on the mobile clamp 5. The lifting screw 2 drives the opening and closing nut assembly 4 to move downward, thereby driving the mobile clamp 5 to move downward, thereby stretching the test piece, and the tension sensor 61 collects tension data.

[0026] The opening and closing nut assembly 4 is connected with a steel rope 9. A pulley 10 is provided on the top of the frame 1. The steel rope 9 is wound around the pulley 10 and is connected with a sliding counterweight 11.

[0027] An automatic elongation measuring device 7 and a manual elongation measuring device 8 are respectively provided on both sides of the lifting screw rod 2. The automatic elongation measuring device 7 is used to automatically measure the elongation of the test piece, while the manual elongation measuring device 8 is used to manually measure the elongation of the test piece.

[0028] like Figure 5 and Figure 6As shown, the automatic elongation measuring device 7 includes an automatic measuring slide rod 71, on which two automatic tracking clamps 72 are arranged, and both automatic tracking clamps 72 are connected with a measuring pull line 73. During the test, the two automatic tracking clamps 72 are clamped at the two ends of the test piece respectively. When the test piece is stretched, the automatic tracking clamps 72 automatically track the position and feedback the position information in real time. The measuring pull line 73 is used to reset the automatic tracking clamp 72. The automatic tracking clamp 72 includes a slide seat 721, and the slide seat 721 is connected with a fixed clamp 722, and the fixed clamp 722 is connected with a movable clamp 723 through a rebound mechanism 724. The rebound mechanism 724 can ensure that even if the test piece becomes thinner, the fixed clamp 722 and the movable clamp 723 can still clamp the test piece.

[0029] like Figure 7 As shown, the manual elongation measuring device 8 includes a manual measuring slide rod 81, on which two positioning pointers 82 are arranged, and the positioning pointers 82 at the bottom are connected to a measuring ruler 83. During the test, the two positioning pointers 82 are manually made to indicate the marking position of the test piece, and the relevant measurement data is read through the measuring ruler 83. The device can be used to manually perform relevant tests when the automatic elongation measuring device 7 fails, and can also be used to review the data measured by the automatic elongation measuring device 7.

[0030] The working process of the utility model is as follows: first, the test piece is clamped between the mobile clamper 5 and the fixed clamper 6, and marks are made on both ends of the test piece. Two automatic tracking clamps 72 are clamped on the two marks, and the equipment is started. The lifting screw rod 2 is driven to rotate by the driving mechanism 3, and the opening and closing nut assembly 4 is driven to descend, so that the mobile clamper 5 moves downward, and the test piece is stretched. The tension sensor feeds back the tension data in real time, and the automatic tracking clamp 72 feeds back the stretching length data. The movement of the mark on the test piece can also be tracked by manually moving two positioning pointers 82. When the test piece is broken, various data are automatically calculated, and by reading the data of the measuring ruler 83, the elongation of the manual test can be calculated by manual calculation, and the result of the automatic measurement can be verified. After the measurement is completed, the opening and closing nut can be opened by the operating handle 41, and the opening and closing nut assembly 4 can be quickly moved to drive the mobile clamper 5 to reset, so that the next test can be carried out quickly, and the work is efficient.

[0031] The above embodiments are preferred implementations of the present invention and are not intended to limit the present invention. Without departing from the inventive concept of the present invention, any obvious replacements are within the protection scope of the present invention.

Claims

1. A manual and automatic tensile testing machine, comprising a frame (1), characterized in that: The frame is provided with a lifting screw (2), the lifting screw is connected to a driving mechanism (3), the lifting screw is provided with an opening and closing nut assembly (4), the opening and closing nut assembly is connected to a movable clamp (5), a fixed clamp (6) fixed to the frame is provided just above the movable clamp, the fixed clamp is provided with a tension sensor (61), and both sides of the lifting screw are provided with an automatic elongation measuring device (7) and a manual elongation measuring device (8), respectively.

2. The manual and automatic tensile testing machine according to claim 1, characterized in that: The automatic elongation measuring device (7) comprises an automatic measuring slide rod (71), on which two automatic tracking clamps (72) are arranged, and both automatic tracking clamps are connected to a measuring pull line (73).

3. The manual and automatic tensile testing machine according to claim 2, characterized in that: The automatic tracking clamp (72) comprises a slide seat (721), the slide seat is connected to a fixed clamp (722), and the fixed clamp is connected to a movable clamp (723) via a rebound mechanism.

4. The manual and automatic tensile testing machine according to claim 3, characterized in that: The manual elongation measuring device (8) comprises a manual measuring slide rod (81), on which two positioning pointers (82) are arranged, and the positioning pointer at the bottom is connected to a measuring ruler (83).

5. The manual and automatic tensile testing machine according to claim 4, characterized in that: The opening and closing nut assembly (4) is connected to an operating handle (41) for operating the opening and closing of the opening and closing nut.

6. The manual and automatic tensile testing machine according to claim 5, characterized in that: A dust-proof curtain (12) for shielding the lifting screw rod is provided on the outer side of the lifting screw rod (2).

7. The manual and automatic tensile testing machine according to any one of claims 1 to 6, characterized in that: The split nut assembly (4) is connected to a steel rope (9), and a pulley (10) is provided on the top of the frame. The steel rope is wound around the pulley and is connected to a sliding counterweight (11).

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