Rubber low-temperature retraction testing machine

Abstract

The utility model relates to the technical field of rubber retraction detection equipment, in particular to a rubber low-temperature retraction testing machine which comprises a device body, a sealing door is rotatably arranged on the rear side of the device body, a controller and refrigeration equipment are fixedly installed on the right side of the device body, a testing bin is formed in the device body, and the sealing door is arranged in the testing bin. A temperature sensor, a mounting plate and a uniform temperature adjusting mechanism are arranged in the test bin, a limiting sliding rod and an upper clamp are fixedly mounted at the bottom of the mounting plate, a lower clamp is arranged below the upper clamp, and limiting blocks are fixedly mounted at the left end and the right end of the lower clamp; according to the rubber low-temperature retraction testing machine provided by the utility model, the temperature in the testing bin is uniformly distributed by utilizing the structural design in the temperature uniform adjusting mechanism, so that the temperature requirement of a rubber sample is met, the accuracy of test data is ensured, and the subsequent analysis operation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber shrinkage detection equipment, in particular to a rubber low-temperature shrinkage testing machine. Background Art

[0002] Rubber is widely used. In order to obtain high-performance rubber products, the changes in rubber properties during processing and the properties after processing must be tested, analyzed and studied in order to obtain the best formula and processing parameters.

[0003] The currently used rubber low-temperature shrinkage tester has been searched and found, for example, a Chinese patent document with the authorization publication number CN202471523U discloses a rubber low-temperature shrinkage performance tester, which has a reasonable structural design and is fully automatic. It includes a box body and a frame arranged on the box body, the frame is connected to a support plate, a clamping mechanism is arranged on the support plate, a sensing mechanism is arranged on the clamping mechanism, the clamping mechanism includes a clamp group, a transmission belt, a pulley and a weight, the clamp group includes an upper clamp and a lower clamp, and the sensing mechanism includes a magnetic scale and a magnetic scale reader arranged on the transmission belt; a refrigeration system is arranged in the box body, and the testing machine is connected to a computer software control system. The utility model is easy to operate, multiple groups of samples can be tested simultaneously, the working efficiency is high, the test accuracy is improved, and a guarantee is provided for the mass production and use of rubber and the improvement of performance.

[0004] Although the above patent solves the problems in the above background technology, it still has the following shortcomings: the rubber sample needs to be evenly cooled in a low temperature environment, but the cooling method displayed in the testing machine cannot ensure that the temperature of each part of the rubber sample is consistent. Therefore, during the test, it is easy to cause deviations in the test results, thereby affecting the accuracy of the data and being unfavorable for subsequent analysis operations.

[0005] In summary, the utility model solves the problems in the above-mentioned background technology by designing a rubber low-temperature shrinkage testing machine. Utility Model Content

[0006] The utility model aims to provide a rubber low temperature shrinkage testing machine to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] The rubber low temperature shrinkage tester comprises a device body, a sealing door is rotatably provided at the rear side of the device body, a sealing ring is provided on the outer surface of the sealing door, a controller and a refrigeration device are fixedly installed on the right side of the device body, a test chamber is provided inside the device body, a temperature sensor, a mounting plate and a temperature uniformity adjustment mechanism are provided inside the test chamber, a limit slide bar and an upper clamp are fixedly installed on the bottom of the mounting plate, a lower clamp is provided below the upper clamp, limit blocks are fixedly installed on both left and right ends of the lower clamp, and a plurality of weights are hung on the bottom of the lower clamp;

[0009] The temperature uniformity adjustment mechanism includes a driving motor, a transmission screw and a positioning rod. The driving motor is fixedly installed on the top right side of the device body. The transmission screw and the positioning rod are rotatably connected to the inner walls of the left and right ends of the device body through bearings, and a movable support block is sleeved on the outer surface of the positioning rod. A circulating fan is fixedly installed on the bottom of the movable support block.

[0010] As a preferred solution of the utility model, the sealing ring is embedded and wrapped on the outer surface of the sealing door, and an observation window is provided on the rear surface of the sealing door.

[0011] As a preferred solution of the utility model, the air delivery port of the refrigeration device passes through the right side surface of the device body through a pipeline and extends to the interior of the device body.

[0012] As a preferred solution of the utility model, the upper clamp and the limiting slide rod are both equally distributed left and right about the bottom surface of the mounting plate.

[0013] As a preferred solution of the utility model, the limit blocks are respectively slidably sleeved on the outer surface of the limit sliding rod, and the outer surface of the limit sliding rod is provided with scale lines.

[0014] As a preferred solution of the utility model, the bottom surface of the temperature sensor is in contact with the bottom inner wall of the test chamber, and the temperature sensor, the drive motor and the circulation fan are electrically connected to the controller through wires respectively.

[0015] As a preferred solution of the utility model, the transmission screw and the positioning rod are arranged in parallel, the outer surface of the transmission screw is threadedly connected to the inner wall of the movable support block, the outer surface of the positioning rod is slidingly connected to the inner wall of the movable support block, the output end of the driving motor passes through the right side surface of the device body and is fixed to the right end of the transmission screw, and its type is a reciprocating motor.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] In the utility model, by setting up the rubber low-temperature shrinkage testing machine, the structural design in the temperature uniformity adjustment mechanism is utilized, and under the action of the driving motor, the movable support block is caused to slide reciprocatingly horizontally along the outer surface of the positioning rod, so that the circulating fan can accelerate the flow of air in the test chamber, and then the temperature in the test chamber can be evenly distributed, thereby meeting the temperature requirements of the rubber sample, ensuring the accuracy of the test data, and facilitating subsequent analysis operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a partial structural schematic diagram of the testing machine of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the temperature uniformity adjustment mechanism of the utility model.

[0021] In the figure: 1. device body; 2. sealing door; 201. sealing ring; 3. controller; 4. refrigeration equipment; 5. test chamber; 501. temperature sensor; 502. mounting plate; 503. limit slide bar; 504. upper clamp; 505. lower clamp; 506. limit block; 507. weight; 6. temperature uniformity adjustment mechanism; 601. drive motor; 602. transmission screw; 603. positioning rod; 604. movable support block; 605. circulation fan. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0024] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more related listed items.

[0026] For examples, see Figure 1-3 , the utility model provides a technical solution:

[0027] The rubber low temperature shrinkage tester comprises a device body 1, a sealing door 2 is rotatably provided at the rear side of the device body 1, a sealing ring 201 is provided on the outer surface of the sealing door 2, a controller 3 and a refrigeration device 4 are respectively fixedly installed on the right side of the device body 1, a test chamber 5 is provided inside the device body 1, a temperature sensor 501, a mounting plate 502 and a temperature uniformity adjustment mechanism 6 are respectively provided inside the test chamber 5, a limit slide bar 503 and an upper clamp 504 are respectively fixedly installed at the bottom of the mounting plate 502, a lower clamp 505 is provided below the upper clamp 504, limit blocks 506 are fixedly installed at both left and right ends of the lower clamp 505, and a plurality of weights 507 are hung at the bottom of the lower clamp 505;

[0028] Specifically, the sealing ring 201 is embedded and wrapped in the outer surface of the sealing door 2, and the rear surface of the sealing door 2 is provided with an observation window;

[0029] In this embodiment, the sealing ring 201 is provided to maintain a sealed setting between the sealing door 2 and the device body 1, so as to facilitate subsequent test operations.

[0030] Specifically, the air delivery port of the refrigeration device 4 passes through the right side surface of the device body 1 through a pipeline and extends to the inside of the device body 1;

[0031] In this embodiment, the cold air in the test chamber 5 is transported by installing the refrigeration equipment 4 .

[0032] Specifically, the upper clamp 504 and the limit slide bar 503 are equidistantly distributed on the bottom surface of the mounting plate 502, and the limit blocks 506 are respectively slidably sleeved on the outer surface of the limit slide bar 503, and the outer surface of the limit slide bar 503 is provided with scale lines;

[0033] In this embodiment, the upper clamp 504 and the lower clamp 505 are mainly used to clamp the rubber sample, and the sliding cooperation between the limit block 506 and the limit slide bar 503 can observe the retraction displacement of the rubber sample.

[0034] In this embodiment, please refer to Figure 1 and Figure 3 The temperature uniformity adjustment mechanism 6 includes a driving motor 601, a transmission screw 602 and a positioning rod 603. The driving motor 601 is fixedly mounted on the top right side of the device body 1. The transmission screw 602 and the positioning rod 603 are rotatably connected to the inner walls of the left and right ends of the device body 1 through bearings, and the outer surfaces of the transmission screw 602 and the positioning rod 603 are sleeved with a moving support block 604. A circulating fan 605 is fixedly mounted on the bottom of the moving support block 604.

[0035] Specifically, the bottom surface of the temperature sensor 501 is in contact with the bottom inner wall of the test chamber 5, the temperature sensor 501, the drive motor 601 and the circulation fan 605 are electrically connected to the controller 3 through wires, the transmission screw 602 and the positioning rod 603 are arranged in parallel, the outer surface of the transmission screw 602 is threadedly connected to the inner wall of the moving support block 604, the outer surface of the positioning rod 603 is slidably connected to the inner wall of the moving support block 604, the output end of the drive motor 601 passes through the right side surface of the device body 1 and is fixed to the right end of the transmission screw 602, and its type is a reciprocating motor;

[0036] In this embodiment, the temperature sensor 501 is mainly used to monitor the temperature in the test chamber 5 in real time. The transmission screw 602 is rotated by driving the motor 601. The threaded cooperation between the transmission screw 602 and the movable support block 604 and the sliding cooperation between the positioning rod 603 and the movable support block 604 cause the movable support block 604 to drive the circulation fan 605 to move horizontally back and forth along the outer surface of the positioning rod 603, thereby achieving the purpose of increasing the air flow rate in the test chamber 5 and making the temperature in the test chamber 5 reach a uniform state.

[0037] The working process of the utility model is as follows: when the rubber low-temperature shrinkage tester is used, the sealing door 2 is first opened, and then the rubber sample is clamped by the upper clamp 504 and the lower clamp 505. After the clamping is completed, the sealing door 2 can be closed, and under the action of the sealing ring 201, the sealing door 2 and the test chamber 5 are in sealed contact, and then the cold air is transported to the test chamber 5 through the refrigeration equipment 4. At this time, the driving motor 601 is driven by the controller 3, and the output end of the driving motor 601 drives the transmission screw 602 to rotate, and then the moving support block 604 is threadedly matched with the transmission screw 602 and moves along the outer side of the positioning rod 603. The surface moves, and the circulation fan 605 moves with the movement of the moving support block 604. The circulation fan 605 is started during the movement. Under the action of the circulation fan 605, the air flow rate in the test chamber 5 is accelerated, which is convenient for the cold air to be evenly distributed in each part of the test chamber 5, so that the rubber sample is evenly cooled under low temperature conditions. Finally, the rubber sample gradually shrinks with the change of temperature, and the lower clamp 505 drives the limit block 506 to slide along the outer surface of the limit slide bar 503 as the rubber sample shrinks. The retraction amount of the rubber sample can be checked by the scale line on the limit slide bar 503, which meets the use requirements of the testing machine.

[0038] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rubber low temperature shrinkage testing machine, comprising a device body (1), characterized in that: A sealing door (2) is rotatably provided on the rear side of the device body (1), and a sealing ring (201) is provided on the outer surface of the sealing door (2). A controller (3) and a refrigeration device (4) are fixedly installed on the right side of the device body (1). A test chamber (5) is provided inside the device body (1), and a temperature sensor (501), a mounting plate (502) and a temperature uniformity adjustment mechanism (6) are provided inside the test chamber (5). A limit slide bar (503) and an upper clamp (504) are fixedly installed on the bottom of the mounting plate (502). A lower clamp (505) is provided below the upper clamp (504). Limit blocks (506) are fixedly installed on both left and right ends of the lower clamp (505), and a plurality of weights (507) are hung on the bottom of the lower clamp (505); The temperature uniformity adjustment mechanism (6) comprises a driving motor (601), a transmission screw (602) and a positioning rod (603); the driving motor (601) is fixedly mounted on the top right side of the device body (1); the transmission screw (602) and the positioning rod (603) are rotatably connected to the inner walls of the left and right ends of the device body (1) via bearings; and the outer surfaces of the transmission screw (602) and the positioning rod (603) are sleeved with a movable support block (604); and a circulating fan (605) is fixedly mounted on the bottom of the movable support block (604).

2. The rubber low temperature shrinkage testing machine according to claim 1, characterized in that: The sealing ring (201) is embedded in and wrapped on the outer surface of the sealing door (2), and the rear surface of the sealing door (2) is provided with an observation window.

3. The rubber low temperature shrinkage testing machine according to claim 1, characterized in that: The air delivery port of the refrigeration device (4) passes through the right side surface of the device body (1) through a pipeline and extends to the interior of the device body (1).

4. The rubber low temperature shrinkage testing machine according to claim 1, characterized in that: The upper clamp (504) and the limiting sliding rod (503) are both distributed equidistantly left and right about the bottom surface of the mounting plate (502).

5. The rubber low temperature shrinkage testing machine according to claim 1, characterized in that: The limit blocks (506) are respectively slidably sleeved on the outer surface of the limit sliding rod (503), and the outer surface of the limit sliding rod (503) is provided with scale lines.

6. The rubber low temperature shrinkage testing machine according to claim 1, characterized in that: The bottom surface of the temperature sensor (501) is in contact with the bottom inner wall of the test chamber (5), and the temperature sensor (501), the drive motor (601) and the circulation fan (605) are electrically connected to the controller (3) via wires.

7. The rubber low temperature shrinkage testing machine according to claim 1, characterized in that: The transmission screw (602) and the positioning rod (603) are arranged in parallel, the outer surface of the transmission screw (602) is threadedly connected to the inner wall of the movable support block (604), the outer surface of the positioning rod (603) is slidably connected to the inner wall of the movable support block (604), the output end of the driving motor (601) passes through the right side surface of the device body (1) and is fixed to the right end of the transmission screw (602), and the type of the driving motor is a reciprocating motor.

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