Universal rubber tension and compression testing machine

Abstract

The utility model discloses a universal rubber tension and compression testing machine, which relates to the technical field of testing machines and comprises a supporting table, a double-shaft motor is fixed at the bottom of the supporting table, lead screws are fixed at output ends of two ends of the double-shaft motor, and the double-shaft motor drives the lead screws to rotate after working. A first inner threaded barrel in threaded connection with a screw rod can pull a sliding block to slide in a sliding groove through a first support under rotation of the screw rod, so that a second support can drive a first U-shaped base to move, the two ends of rubber can be clamped through a clamping mechanism, and when the first screw rod is in threaded connection with a second inner threaded barrel on the side wall of a lower base, the first inner threaded barrel is clamped through a clamping mechanism. When the first screw rod is in threaded connection with the first inner threaded cylinder at the top of the upper seat, the rubber tension test can be carried out, when the first screw rod is in threaded connection with the second inner threaded cylinder at the top of the upper seat, the rubber pressure test can be carried out, operation is easy and convenient, the pressure test can be carried out, the use range of the device is widened, and meanwhile destructive damage to the rubber is avoided in the test process; and the authenticity of data after the test is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of testing machines, in particular to a universal rubber tensile and compressive testing machine. Background Art

[0002] According to the "A Rubber Tensile Testing Machine" proposed by the publication number "CN210154928U", one end of a rubber strip is fixed on a hook, and the other end of the rubber strip is fixed in a through groove through a pressing block. The first threaded rod is driven to rotate by a servo motor, and the pull plate is driven to move downward by the first threaded rod, while stretching the rubber strip. Thus, the tensile capacity of the rubber strip can be understood by observing a push-pull force gauge.

[0003] The inventor found that the following problems in the prior art were not well solved during the implementation of this solution: it can only perform tensile tests on rubber, and cannot perform pressure tests on rubber as needed, so its application range is not wide. Secondly, when performing tensile tests, one end of the rubber needs to penetrate through the hook, and this fixing method will damage the rubber, seriously affecting the authenticity of the data after the test. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a universal rubber tensile and compressive testing machine, which can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A universal rubber tensile and compressive testing machine, including a support table, a double-shaft motor is fixed at the bottom of the support table, screw rods are fixed at the output ends of both ends of the double-shaft motor, inner threaded cylinders I are threadedly connected to the outer walls of the screw rods, brackets I are fixed to the outer walls on both sides of the inner threaded cylinders I, chutes are drilled at the positions of the support table corresponding to the brackets I, sliders are slidably connected to the interiors of the chutes, brackets II are fixed to the tops of the sliders, U-shaped seats are arranged between the two brackets II at both ends of the top of the support table, and the ends of the brackets II far from the sliders are respectively fixedly connected to the outer side walls of the U-shaped seats. Screw rods I are threadedly connected to the mutually remote side walls of the U-shaped seats, and clamping mechanisms are arranged inside the U-shaped seats;

[0007] The clamping mechanism includes a lower seat, an upper seat is arranged above the lower seat, screw rods II are fixed at the four corners of the top of the lower seat, nuts are threadedly connected to the outer walls of the screw rods II, and inner threaded cylinders II are fixed to the side walls of the lower seat and the top of the upper seat.

[0008] Preferably, the outer side wall of the lower seat is rotatably connected to the inner wall of the U-shaped seat through a rotating shaft.

[0009] Preferably, the second screw rod is slidably connected to the upper seat after passing through it respectively, and the nuts are located at the top of the upper seat respectively.

[0010] Preferably, the first screw rod is threadedly connected to the second internal thread cylinder with a matching position after being inserted through it.

[0011] Preferably, side plates are fixedly arranged at the bottoms of both ends of the lead screw where the support platform is located. One end of the lead screw away from the dual-axis motor is rotatably connected to the side plate at the matching position, and one end of the lead screw close to the dual-axis motor is rotatably connected to the side plate at the matching position after passing through it.

[0012] Preferably, one end of the first bracket away from the first internal thread cylinder is fixedly connected to the bottom of the slider respectively.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] After the dual-axis motor works, it drives the lead screw to rotate. The first internal thread cylinder threadedly connected to the lead screw can slide in the chute by pulling the slider through the first bracket under the rotation of the lead screw, so that the second bracket can drive the U-shaped seat to move together. The two ends of the rubber can be clamped by the clamping mechanism. When the first screw rod is threadedly connected to the second internal thread cylinder on the side wall of the lower seat, the tensile test of the rubber can be carried out. When the first screw rod is threadedly connected to the second internal thread cylinder at the top of the upper seat, the pressure test of the rubber can be carried out. It is not only simple and convenient to operate, but also can carry out the pressure test, expanding the use range of the device. At the same time, it will not cause destructive damage to the rubber during the test, so as not to affect the authenticity of the data after the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the rubber tensile and compressive universal testing machine of the utility model when performing a tensile test;

[0016] Figure 2 is a schematic structural diagram of the rubber tensile and compressive universal testing machine of the utility model when performing a pressure test;

[0017] Figure 3 is a schematic bottom structural diagram of the rubber tensile and compressive universal testing machine of the utility model;

[0018] Figure 4 is an exploded structural diagram of the clamping mechanism of the rubber tensile and compressive universal testing machine of the utility model.

[0019] In the figure: 1, support platform; 2, dual-axis motor; 3, lead screw; 31, side plate; 4, first internal thread cylinder; 5, first bracket; 6, chute; 7, slider; 8, second bracket; 81, U-shaped seat; 82, first screw rod; 9, clamping mechanism; 91, lower seat; 92, upper seat; 93, second screw rod; 94, nut; 95, second internal thread cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] As Figures 1-4 shown, a rubber tensile and compressive universal testing machine includes a support table 1. A dual-axis motor 2 is fixed at the bottom of the support table 1. Output ends at both ends of the dual-axis motor 2 are both fixed with lead screws 3. The outer walls of the lead screws 3 are all threadedly connected with first internal thread cylinders 4. Both outer side walls of the first internal thread cylinders 4 are fixed with first brackets 5. The support table 1 is provided with sliding grooves 6 at positions corresponding to the first brackets 5. Sliders 7 are all slidably connected inside the sliding grooves 6. Tops of the sliders 7 are all fixed with second brackets 8. U-shaped seats 81 are arranged between the two second brackets 8 at both ends of the top of the support table 1. One ends of the second brackets 8 far from the sliders 7 are respectively fixedly connected with the outer side walls of the U-shaped seats 81. First screws 82 are all threadedly connected to the mutually remote side walls of the U-shaped seats 81. Clamping mechanisms 9 are arranged inside the U-shaped seats 81. One ends of the first brackets 5 far from the first internal thread cylinders 4 are respectively fixedly connected with the bottoms of the sliders 7;

[0022] The clamping mechanism 9 includes a lower seat 91. Upper seats 92 are arranged above the lower seat 91. Four corners of the top of the lower seat 91 are all fixed with second screws 93. The outer walls of the second screws 93 are all threadedly connected with nuts 94. Side walls of the lower seat 91 and tops of the upper seats 92 are all fixed with second internal thread cylinders 95.

[0023] Specifically, the outer side wall of the lower seat 91 is rotationally connected to the inner wall of the U-shaped seat 81 through a rotating shaft, which is convenient for rotation when changing the test type.

[0024] Specifically, the second screws 93 respectively penetrate through and are slidably connected to the upper seats 92, and the nuts 94 are respectively located at the tops of the upper seats 92, so that the lower seat 91 and the upper seat 92 can be changed according to the thickness of the rubber when clamping the rubber.

[0025] Specifically, the first screws 82 respectively penetrate through and are threadedly connected to the second internal thread cylinders 95 with matching positions, so as to maintain the stability of the clamping mechanism 9 during the test.

[0026] Specifically, side plates 31 are fixed at the bottoms of the support table 1 at both ends of the lead screws 3. One end of the lead screw 3 far from the dual-axis motor 2 is rotationally connected to the side plate 31 at the matching position, and one end of the lead screw 3 close to the dual-axis motor 2 penetrates through and is rotationally connected to the side plate 31 at the matching position, ensuring the stability of the lead screw 3 during rotation.

[0027] Specifically.

[0028] Working principle:

[0029] After the dual-axis motor 2 operates, it drives the lead screw 3 to rotate. The internal-thread cylinder 1 on the lead screw 3 is threadedly connected, and it can slide the slider 7 in the chute 6 under the rotation of the lead screw 3 through the support 1. As a result, the support 2 can drive the U-shaped seat 81 to move together. The clamping mechanism 9 can clamp both ends of the rubber. When the first screw 82 is threadedly connected to the internal-thread cylinder 2 on the side wall of the lower seat 91, the tensile test of the rubber can be carried out. When the first screw 82 is threadedly connected to the internal-thread cylinder 2 on the top of the upper seat 92, the pressure test of the rubber can be carried out. It is not only simple and convenient to operate, but also can carry out the pressure test, expanding the use range of the device. At the same time, it will not cause destructive damage to the rubber during the test, so as not to affect the authenticity of the data after the test;

[0030] During the tensile test of the clamping mechanism 9, the rotation of the nut 94 enables the upper seat 92 to move away from the lower seat 91 after rising. The end of the rubber is inserted between the lower seat 91 and the upper seat 92, and the lower seat 91 and the upper seat 92 can stably clamp the rubber end under the downward pressure after the rotation of the nut 94. The rotation of the first screw 82 is threadedly connected to the internal-thread cylinder 2 on the side wall of the lower seat 91, so as to keep the clamping mechanism 9 horizontal during the test. Subsequently, the clamping mechanism 9 is driven to move away from each other by the operation of the dual-axis motor 2, and the tensile test can be carried out;

[0031] During the pressure test of the clamping mechanism 9, the lower seat 91 is kept vertical by rotation. Subsequently, the rotation of the first screw 82 is threadedly connected to the internal-thread cylinder 2 on the upper seat 92 to maintain the stability when vertical. At this time, the two lower seats 91 at both ends are in a vertical state. After the dual-axis motor 2 operates, it drives the two to approach each other. Place the rubber between the two lower seats 91, and the pressure test can be carried out.

[0032] The circuits, electronic components, and control modules involved are all prior arts and can be fully realized by those skilled in the art without further elaboration. The content protected by the present utility model does not involve improvements to software and methods either.

[0033] The above shows and describes the basic principles, main features, and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A rubber tension and compression universal testing machine, comprising a support table (1), characterized in that: A dual-axis motor (2) is fixed at the bottom of the support platform (1), and screws (3) are fixed at the output ends of both ends of the dual-axis motor (2), and the outer walls of the screws (3) are threadedly connected to an internal threaded barrel (4), and brackets (5) are fixed to the outer walls of both sides of the internal threaded barrel (4), and the support platform (1) is provided with a slide groove (6) at the position of the bracket (5), and a slider (7) is slidably connected inside the slide groove (6), and brackets (8) are fixed on the top of the slider (7), and a U-shaped seat (81) is provided between the two brackets (8) at the two ends of the top of the support platform (1), and the ends of the brackets (8) away from the slider (7) are respectively fixedly connected to the outer side walls of the U-shaped seat (81), and the side walls of the U-shaped seat (81) away from each other are threadedly connected to screws (82), and the inside of the U-shaped seat (81) is provided with a clamping mechanism (9); The clamping mechanism (9) comprises a lower seat (91), an upper seat (92) is provided above the lower seat (91), screw rods (93) are fixed at four corners of the top of the lower seat (91), nuts (94) are threadedly connected to the outer wall of the screw rods (93), and internal threaded tubes (95) are fixed to the side walls of the lower seat (91) and the top of the upper seat (92).

2. The rubber tension and compression universal testing machine according to claim 1, characterized in that: The outer wall of the lower seat (91) is rotatably connected to the inner wall of the U-shaped seat (81) via a rotating shaft.

3. The rubber tension and compression universal testing machine according to claim 1, characterized in that: The second screw rods (93) are respectively penetrated through the upper seats (92) and are slidably connected thereto, and the nuts (94) are respectively located on the tops of the upper seats (92).

4. The rubber tension and compression universal testing machine according to claim 1, characterized in that: The screw rods 1 (82) are respectively inserted into and threadedly connected with the internal threaded barrels 2 (95) which are matched in position.

5. The rubber tension and compression universal testing machine according to claim 1, characterized in that: The bottom of the support platform (1) is fixed with side plates (31) at both ends of the screw rod (3); the end of the screw rod (3) away from the dual-axis motor (2) is rotatably connected to the side plate (31) at a matching position; the end of the screw rod (3) close to the dual-axis motor (2) is rotatably connected to the side plate (31) at a matching position after penetrating.

6. The rubber tension and compression universal testing machine according to claim 1, characterized in that: One end of the bracket 1 (5) away from the internal threaded tube 1 (4) is fixedly connected to the bottom of the slider (7).

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