Plastic strip tensile testing machine

Abstract

The utility model discloses a plastic strip tensile testing machine, and relates to the technical field of testing machines. The plastic strip tensile testing machine comprises a testing machine base and a supporting and fixing frame fixedly connected to the testing machine base, an electric adjusting arm is arranged on the supporting and fixing frame, a clamping base is movably connected to the electric adjusting arm in a clamped mode, and a butt joint structure is arranged between the clamping base and the electric adjusting arm. The plastic strip tensile testing machine adopts a butt joint structure design, so that the clamping seat and the electric adjusting arm can be quickly butt-jointed and locked, single-hand operation is realized, during locking, a positioning clamping block only needs to be aligned to the inner part of a positioning sleeve seat for clamping connection, a wedge-shaped block is automatically clamped in a locking groove, the installation is convenient, and the working efficiency is improved. And in the plastic strip stretching test process, the speed is high, and the plastic strip can be used for rapid stretching test conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of testing machines, in particular to a plastic strip tensile testing machine. Background Art

[0002] The plastic strip tensile testing machine is an instrument that can apply unidirectional force at a fixed tensile rate and measure material deformation and damage. It is mainly used to evaluate the mechanical properties of plastic materials during the tensile process, such as elastic modulus, strength, plasticity, etc.

[0003] When using a traditional plastic strip tensile testing machine, the clamp needs to be installed on the lifting arm, and the clamp is used to clamp and subsequently stretch the plastic strip. At present, when the clamp is installed, it is mainly connected by a plug post and a sleeve, and then a pin is used to plug it, and finally a locking nut is used to rotate and lock it. This installation method is inconvenient and cumbersome to install, and it must be operated with both hands, which makes the speed slow during the plastic strip tensile test and is not convenient for rapid tensile testing. In view of the shortcomings of the prior art, the utility model provides a plastic strip tensile testing machine to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a plastic strip tensile testing machine, which adopts a docking structure design, so that the clamping seat and the electric adjustment arm can be quickly docked and locked, and one-handed operation is realized. When locking, it is only necessary to align the positioning card block with the inner card of the positioning sleeve seat, and make the wedge block automatically card into the inner part of the locking groove. The installation is convenient, so that the speed is fast during the plastic strip tensile test, and it is convenient to carry out the rapid tensile test of the plastic strip.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a plastic strip tensile testing machine, comprising a testing machine base and a supporting and fixing frame fixedly connected to the testing machine base, the supporting and fixing frame is provided with an electric adjustment arm, the electric adjustment arm is movably connected with a clamping seat, and a docking structure is provided between the clamping seat and the electric adjustment arm;

[0006] The docking structure comprises:

[0007] A connecting rod, arranged on the clamping seat;

[0008] A positioning block is arranged on the connecting rod, and a locking groove is provided on the positioning block;

[0009] A positioning sleeve is arranged on the electric adjustment arm, and the positioning block is movably connected in the positioning sleeve;

[0010] The locking seat is arranged on the positioning sleeve seat, a spring is arranged inside the locking seat, a sliding block is fixedly connected to the spring, a wedge block is arranged on the sliding block, and the wedge block is movably clamped in the locking groove.

[0011] Preferably, the sliding block is provided with a push handle.

[0012] Preferably, the positioning sleeve is provided with a slot corresponding to the position of the positioning block.

[0013] Preferably, a boss is provided on the positioning block.

[0014] Preferably, a direction stopper is fixedly connected to the positioning block.

[0015] Preferably, the sliding block is slidably connected in the inner cavity of the locking seat.

[0016] Preferably, the positioning sleeve is provided with a notch corresponding to the wedge block.

[0017] The utility model discloses a plastic strip tensile testing machine, which has the following beneficial effects:

[0018] The plastic strip tensile testing machine adopts a docking structure design, so that the clamping seat and the electric adjustment arm can be quickly docked and locked, and one-handed operation is realized. When locking, it is only necessary to align the positioning card block with the inner card of the positioning sleeve seat, and the wedge block is automatically clamped in the locking groove. The installation is convenient, so that the plastic strip tensile test process is fast, and it is convenient to use for rapid tensile testing of plastic strips. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the installation of the clamping seat of the utility model;

[0022] Figure 3 This is a disassembly diagram of the clamping seat of the utility model;

[0023] Figure 4 It is a cross-sectional view of the locking seat of the utility model.

[0024] In the figure: 1. test machine base; 2. support bracket; 3. electric adjustment arm; 4. positioning sleeve; 401. slot; 5. positioning block; 501. locking slot; 502. boss; 503. direction stopper; 6. connecting rod; 7. clamping seat; 8. locking seat; 801. spring; 802. slider; 803. wedge block; 804. push handle. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The embodiment of the present application provides a plastic strip tensile testing machine, which solves the problem that a conventional plastic strip tensile testing machine needs to install a clamp on a lifting arm during use, the conventional installation method is inconvenient and cumbersome to install, and must be operated with both hands, resulting in a slow speed during the plastic strip tensile test and inconvenient for use in rapid tensile testing.

[0027] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] The utility model embodiment discloses a plastic strip tensile testing machine, according to the attached Figure 1-4 As shown, it includes a test machine base 1 and a support and fixing frame 2 fixedly connected to the test machine base 1, the support and fixing frame 2 is provided with an electric adjustment arm 3, the electric adjustment arm 3 is movably connected with a clamping seat 7, and a docking structure is provided between the clamping seat 7 and the electric adjustment arm 3;

[0029] The docking structure includes a connecting rod 6, a positioning block 5, a positioning sleeve 4 and a locking seat 8:

[0030] The connecting rod 6 is arranged on the clamping seat 7;

[0031] The positioning block 5 is arranged on the connecting rod 6, a locking groove 501 is provided on the positioning block 5, a boss 502 is provided on the positioning block 5, and a direction stopper 503 is fixedly connected to the positioning block 5. The boss 502 is designed so that the positioning block 5 can be easily and quickly aligned and inserted into the interior of the positioning sleeve 4. The direction stopper 503 is designed so that the front and back of the positioning block 5 can be easily and quickly confirmed so that the positioning block 5 can be quickly inserted into the interior of the positioning sleeve 4.

[0032] The positioning sleeve 4 is arranged on the electric adjustment arm 3, the positioning block 5 is movably connected in the positioning sleeve 4, a slot 401 corresponding to the position of the positioning block 5 is provided on the positioning sleeve 4, a notch corresponding to the wedge block 803 is provided on the positioning sleeve 4, and the wedge block 803 passes through the notch of the positioning sleeve 4 and extends into the inner cavity of the positioning sleeve 4;

[0033] The locking seat 8 is arranged on the positioning sleeve seat 4, and a spring 801 is provided inside the locking seat 8. A slider 802 is fixedly connected to the spring 801. The slider 802 is slidably connected in the inner cavity of the locking seat 8. A push handle 804 is provided on the slider 802. A wedge block 803 is provided on the slider 802. The wedge block 803 is movably connected in the locking groove 501. The push handle 804 is designed to facilitate pushing the slider 802 and the wedge block 803. The wedge block 803 is disengaged from the locking groove 501 to unlock the positioning block 5. Therefore, the subsequent disassembly process of the positioning sleeve seat 4 and the positioning block 5 is convenient.

[0034] The overall structure of the docking structure is compact. When the clamping seat 7 and the electric adjustment arm 3 are spliced ​​and locked, it is only necessary to align the positioning block 5 with the inside of the positioning sleeve 4 and make the wedge block 803 automatically snap into the inside of the locking groove 501, which is convenient for installation.

[0035] When the positioning block 5 is aligned with the interior of the positioning sleeve 4 and inserted, the positioning block 5 first contacts the inclined surface of the wedge block 803, and the positioning block 5 applies a thrust to the inclined surface of the wedge block 803, so that the wedge block 803 moves, and the wedge block 803 drives the slider 802 to move and squeezes the spring 801. When the wedge block 803 is aligned with the locking groove 501, the positioning sleeve 4 and the positioning block 5 are engaged, and at the same time, the spring 801 resets and pushes the slider 802 and the wedge block 803 to move, so that the wedge block 803 is inserted into the locking groove 501, so that the positioning block 5 is aligned with the positioning sleeve 4 and locked, thereby realizing the rapid docking of the clamping seat 7 and the electric adjustment arm 3.

[0036] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A plastic strip tensile testing machine, comprising a testing machine base (1) and a supporting frame (2) fixedly connected to the testing machine base (1), wherein the supporting frame (2) is provided with an electric adjustment arm (3), characterized in that: A clamping seat (7) is movably clamped on the electric adjustment arm (3), and a docking structure is provided between the clamping seat (7) and the electric adjustment arm (3); The docking structure comprises: A connecting rod (6) is arranged on the clamping seat (7); A positioning block (5) is arranged on the connecting rod (6), and a locking groove (501) is provided on the positioning block (5); A positioning sleeve (4) is arranged on the electric adjustment arm (3), and the positioning clamping block (5) is movably clamped in the positioning sleeve (4); A locking seat (8) is arranged on the positioning sleeve (4), a spring (801) is arranged inside the locking seat (8), a slider (802) is fixedly connected to the spring (801), a wedge block (803) is arranged on the slider (802), and the wedge block (803) is movably engaged in the locking groove (501).

2. A plastic strip tensile testing machine according to claim 1, characterized in that: The sliding block (802) is provided with a push handle (804).

3. A plastic strip tensile testing machine according to claim 1, characterized in that: The positioning sleeve (4) is provided with a slot (401) corresponding to the position of the positioning block (5).

4. A plastic strip tensile testing machine according to claim 3, characterized in that: The positioning block (5) is provided with a boss (502).

5. A plastic strip tensile testing machine according to claim 4, characterized in that: A direction stopper (503) is fixedly connected to the positioning block (5).

6. A plastic strip tensile testing machine according to claim 1, characterized in that: The slider (802) is slidably connected in the inner cavity of the locking seat (8).

7. A plastic strip tensile testing machine according to claim 1, characterized in that: The positioning sleeve (4) is provided with a notch corresponding to the wedge block (803).

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