Strength test fixture

Abstract

The utility model discloses a strength test fixture, which relates to the field of plastic strength test, and includes a fixed base for installation and connection on a test platform, wherein the fixed base is provided through the center, a movable mechanism is movably provided in the through-center cavity of the fixed base, a placement base plate for placing plastic parts is provided above the through-center cavity of the fixed base, and a clamping structure for clamping and limiting the test piece on the placement base plate is connected to the movable mechanism. The fixture is used to replace manual clamping and limiting of some plastic parts to be tested on the test bench of the test equipment, so as to ensure the safety of the test personnel and improve the accuracy of the parameters during the test.

Description

Technical Field

[0001] The utility model relates to the field of strength testing of plastic parts, in particular to a strength testing fixture. Background Art

[0002] Plastic is a common material in our daily life. Plastic can be used to produce plastic parts such as pipes and bags. Among these plastic parts, due to different requirements, some plastic parts need to be "tested" and qualified before leaving the factory. Some plastic parts compressive strength test devices currently used directly place the plastic parts on the test platform for direct testing. When testing the compressive strength, the plastic parts used for the test are not fixed and need to be "manually" assisted to fix, which creates a certain degree of safety. If "manual" assistance is not performed, the plastic test piece will move, causing errors in the test results and affecting the quality of its use. Utility Model Content

[0003] The purpose of this utility model is achieved through the following technical solutions:

[0004] A strength test fixture comprises a fixed base for installation and connection on a test platform, the fixed base is arranged through-core, a movable mechanism is movably arranged in the through-core cavity of the fixed base, a placement base plate for placing plastic parts is arranged above the through-core cavity of the fixed base, and a clamping structure for clamping and limiting the test piece on the placement base plate is connected to the movable mechanism.

[0005] Preferably, the movable mechanism comprises a screw rod, one end of which moves through a side wall of the through-hole of the fixed base and the end is connected to a limiting structure;

[0006] The other end of the screw rod movably passes through the other side wall of the through-core cavity of the fixed base through a screw rod machine, and the screw rod machine is fixed on the fixed base.

[0007] Preferably, the screw rod is provided with a movable support which can be driven by the screw rod, and the movable support is movably arranged in the through-hole body of the fixed base, and the two sides of the movable support are respectively connected with clamping members which can be movably arranged relatively.

[0008] Preferably, the clamping members each include a sliding support, the sliding support is hinged to the movable support via a hinge rod, the sliding support is slidably connected to the fixed base via a slider, and a guide shaft for movably guiding the sliding support is provided on the sliding support, and the guide shaft is fixedly connected to the fixed base;

[0009] The sliding supports are connected to a plurality of limit blocks, which are used to clamp and limit the plastic parts placed on the placement base plate by controlling the two sliding supports to move relatively toward the placement base plate.

[0010] Preferably, the limiting structure comprises a first limiting sliding plate, which is arranged on a side away from the screw machine, and one end of the screw away from the screw machine can movably pass through the first limiting sliding plate, and the end is connected to an end cap for preventing the first limiting sliding plate from sliding out of the screw;

[0011] The first limit sliding plate is connected to the fixed base by sliding through a slider, and a plurality of limit blocks are connected to the first limit sliding plate;

[0012] Driven by the movement of the screw rod, the first limit sliding plate can move relatively along the placement bottom plate.

[0013] Preferably, a second limiting sliding plate is provided at one end of the fixed base away from the first limiting sliding plate, the second limiting sliding plate is movably arranged on a side of the screw rod away from the first limiting sliding plate and is connected to the fixed base by sliding a slider, and a plurality of limiting blocks are also connected to the second limiting sliding plate;

[0014] The first limiting sliding plate and the second limiting sliding plate are driven to move relative to each other by controlling the screw rod, and a plurality of limiting blocks respectively connected to the first limiting sliding plate and the second limiting sliding plate are used to clamp and limit the plastic part placed on the placement bottom plate.

[0015] The beneficial effects of the utility model are as follows: the purpose of the utility model is to provide a strength test fixture, which is used to replace manual clamping and limiting of some plastic parts that need to be tested on the test bench of the test equipment, so as to ensure the safety of the testers and improve the accuracy of the parameters during the test. The fixture includes a fixed base for installation and connection on the test platform in terms of specific structural design. The fixed base is provided through the center, and a movable mechanism is movably provided in the through-center cavity of the fixed base. A placement base plate for placing plastic parts is provided above the through-center cavity of the fixed base, and a clamping structure for clamping and limiting the test piece on the placement base plate is connected to the movable mechanism. During implementation, the clamping structure is driven by controlling the movable mechanism to clamp and limit the test piece placed on the placement base plate, thereby replacing manual assistance in the operation and achieving the purpose of design and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the strength test fixture of the utility model;

[0017] Figure 2 It is an exploded schematic diagram of the structural part of the strength test fixture of the utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure of the movable mechanism of the strength test fixture of the utility model;

[0019] In the figure, 1-fixed base, 2-placing bottom plate, 3-screw, 4-sliding support, 5-first limit sliding plate, 6-second limit sliding plate, 31-screw machine, 32-movable support, 41-hinged rod. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model, that is, the embodiments described are only part of the embodiments of the utility model, not all of the embodiments.

[0021] like Figures 1 to 3 As shown, a strength test fixture is used to replace manual clamping and limiting of some plastic parts to be tested on the test bench of the test equipment, so as to ensure the safety of the test personnel and improve the accuracy of the parameters during the test. The fixture includes a fixed base for installation and connection on the test platform in terms of specific structural design. The fixed base is provided through the center, and a movable mechanism is movably provided in the through-center cavity of the fixed base. A placement base plate for placing plastic parts is provided above the through-center cavity of the fixed base, and a clamping structure for clamping and limiting the test piece on the placement base plate is connected to the movable mechanism.

[0022] Furthermore, in a specific embodiment, the fixture is installed and connected at a designed position (on the test platform of the strength testing equipment). In order to achieve the connection and installation, the fixture includes a fixed base 1 for installation and connection on the test platform, and the fixed base 1 is fixed to the designated position on the test platform by bolts. At the same time, the fixed base 1 is arranged through the center, and a movable mechanism is movably arranged in the through-center cavity of the fixed base 1. A placement base plate 2 for placing plastic parts is arranged above the through-center cavity of the fixed base, and a clamping structure for clamping the test piece on the placement base plate is connected to the movable mechanism. During implementation, the movable mechanism includes a screw rod 3, one end of which movably passes through a side wall of the through-center cavity of the fixed base 1 and the end is connected to a limiting structure; the other end of the screw rod 3 movably passes through the other side wall of the through-center cavity of the fixed base 1 through a screw rod machine 31, and the screw rod machine 31 is fixed on the fixed base 1. In addition, the screw rod 3 is provided with a movable support 32 that can be moved by the screw rod 3 and driven to move, and the movable support 32 is movably arranged in the through-hole of the fixed base 1, and the two sides of the movable support 32 are respectively connected with clamping parts that can be relatively movably arranged. By controlling the screw machine 31 (existing technology), the screw rod 3 is driven to rotate, so that the movable support 32 on the screw rod 3 is moved (threaded setting), and the clamping parts that can be relatively movably arranged are respectively connected with the two sides of the movable support 32 to move relatively, which is used to clamp and limit the plastic parts to be tested placed on the placement base plate 2.

[0023] Furthermore, in the embodiments, the clamping members include a sliding support 4, which is hinged to the movable support 32 through a hinge rod 41, and the sliding support 4 is connected to the fixed base 1 by sliding a slider, and a guide shaft for guiding the sliding support 4 is passed through the sliding support 4, and the guide shaft is fixedly connected to the fixed base 1; a plurality of limit blocks are connected to the sliding support 4, which are used to clamp and limit the plastic parts placed on the placement base 2 by respectively controlling the two sliding supports 4 to move relative to each other toward the placement base 2. At this time, only the two sides of the plastic part are clamped and limited. However, during the actual strength test, the clamping and limiting on both sides are not reliable. Therefore, in order to ensure firm fixing and clamping, a limiting structure is connected to one end of the screw rod 3 that moves through a side wall of the through cavity of the fixed base 1; the limiting structure includes a first limiting sliding plate 5, and the first limiting sliding plate 5 is arranged on the side away from the screw rod machine 31. The end of the screw rod 3 away from the screw rod machine 31 can movably pass through the first limiting sliding plate 5, and the end is connected to an end cap for preventing the first limiting sliding plate 5 from sliding out of the screw rod; the first limiting sliding plate 5 is connected to the fixed base 1 by sliding a slider, and a plurality of limiting blocks are connected to the first limiting sliding plate 5; driven by the movement of the screw rod 3, the first limiting sliding plate 5 can move relatively along the placement base plate 2. In addition, a second limiting sliding plate 6 is provided at one end of the fixed base 1 away from the first limiting sliding plate 5. The second limiting sliding plate 6 is movably inserted through the side of the screw rod 3 away from the first limiting sliding plate 5 and is connected to the fixed base 1 by sliding a slider. A plurality of limiting blocks are also connected to the second limiting sliding plate 6. In this way, when controlling and clamping the plastic part placed on the placement base plate 2, the screw rod 3 can be driven to rotate only by controlling the screw rod machine 31. The screw rod 3 can not only drive the sliding supports 4 of the two clamping parts to move relatively toward one side of the placement base plate 2 through the movable support 32, but also limit and support the plastic part on the placement base plate 2 (on both sides of the plastic part) through the plurality of limiting blocks on the two sliding supports 4. Moreover, the screw rod 3 can be controlled to rotate by controlling the screw rod machine 31, so that the screw rod 3 drives the first limiting sliding plate 5 and the second limiting sliding plate 6 to move relatively. (The first limit sliding plate 5 and the second limit sliding plate 6 are threadedly connected to the screw rod 3 in opposite ways, i.e., the rotation directions are opposite), thereby achieving the goal of driving the first limit sliding plate 5 and the second limit sliding plate 6 to move relatively close to (the other two sides of the plastic part), and then through a number of limit blocks respectively connected to the first limit sliding plate 5 and the second limit sliding plate 6, the plastic part placed on the placement base plate 2 can be clamped and limited, thereby achieving "four-sided clamping and limiting", and the plastic part is firmly fixed on the fixing device, thereby facilitating strength testing (compressive strength test).Through the overall structural design of the fixture, the fixture is used to replace manual clamping and positioning of some plastic parts that need to be tested on the test bench of the test equipment. The fixture can "firmly" fix the plastic parts on the test platform, which not only saves time and improves efficiency, but also ensures the safety of the testers and improves the accuracy of parameters during testing.

[0024] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details of the embodiments in the above description. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention; at the same time, the various embodiments of the present invention can also be arbitrarily combined, as long as they do not violate the idea of ​​the present invention, they shall also be regarded as the contents disclosed by the present invention.

Claims

1. A strength test fixture, characterized in that: It includes a fixed base for installation and connection on the test platform, the fixed base is arranged through the center, a movable mechanism is movably arranged in the through-center cavity of the fixed base, a placement base plate for placing plastic parts is arranged above the through-center cavity of the fixed base, and a clamping structure for clamping and limiting the test piece on the placement base plate is connected to the movable mechanism.

2. The strength test fixture according to claim 1, characterized in that: The movable mechanism comprises a screw rod, one end of which moves through a side wall of the through-hole of the fixed base and the end is connected to a limiting structure; The other end of the screw rod movably passes through the other side wall of the through-core cavity of the fixed base through a screw rod machine, and the screw rod machine is fixed on the fixed base.

3. The strength test fixture according to claim 2, characterized in that: The screw rod is provided with a movable support which can be driven to move by the screw rod, and the movable support is movably arranged in the through-hole cavity of the fixed base, and the two sides of the movable support are respectively connected with clamping pieces which can be movably arranged relatively.

4. The strength test fixture according to claim 3, characterized in that: The clamping members each include a sliding support, the sliding support is hinged to the movable support through a hinge rod, the sliding support is slidably connected to the fixed base through a slider, and a guide shaft for guiding the sliding support is provided on the sliding support, and the guide shaft is fixedly connected to the fixed base; The sliding supports are connected to a plurality of limit blocks, which are used to clamp and limit the plastic parts placed on the placement base plate by controlling the two sliding supports to move relatively toward the placement base plate.

5. The strength test fixture according to claim 2, characterized in that: The limiting structure comprises a first limiting sliding plate, which is arranged on a side away from the screw machine, and one end of the screw away from the screw machine can movably pass through the first limiting sliding plate, and the end is connected to an end cap for preventing the first limiting sliding plate from sliding out of the screw; The first limit sliding plate is connected to the fixed base by sliding through a slider, and a plurality of limit blocks are connected to the first limit sliding plate; Driven by the movement of the screw rod, the first limit sliding plate can move relatively along the placement bottom plate.

6. The strength test fixture according to claim 5, characterized in that: A second limiting sliding plate is provided at one end of the fixed base away from the first limiting sliding plate, the second limiting sliding plate is movably arranged on a side of the screw rod away from the first limiting sliding plate and is connected to the fixed base by sliding a slider, and a plurality of limiting blocks are also connected to the second limiting sliding plate; The first limiting sliding plate and the second limiting sliding plate are driven to move relative to each other by controlling the screw rod, and a plurality of limiting blocks respectively connected to the first limiting sliding plate and the second limiting sliding plate are used to clamp and limit the plastic part placed on the placement bottom plate.

Images