A tensile testing machine for automobile rubber production

Abstract

The utility model relates to the technical field of automobile rubber tension test, and disclose a tension testing machine for automobile rubber production, including work table, the top fixedly connected with base of work table is provided with first clamping mechanism, the rear end fixedly connected with slide rail of base, the top fixedly connected with fixed base of slide rail, be provided with sliding mechanism between base and fixed base, sliding mechanism sliding connection is in the front end of slide rail, be provided with second clamping mechanism on sliding mechanism, the inside installation of work table is used for driving sliding mechanism to go up and down the motor, the inside installation of base has displacement sensor, be provided with force sensor on motor, the utility model discloses through setting displacement sensor and force sensor, built -in displacement sensor and force sensor have realized the automatic acquisition of data, have excluded human reading error, have improved measurement accuracy and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of automotive rubber tensile testing technology, specifically a tensile testing machine for automotive rubber production. Background Technology

[0002] In the automotive rubber manufacturing industry, the quality and performance of rubber products are of paramount importance, and tensile performance is one of the key indicators for measuring the quality of rubber products. As a core piece of equipment for testing the tensile performance of rubber, the tensile testing machine can accurately measure the tensile force and deformation of rubber materials during stretching, providing crucial data support for the research, development, production, and quality control of automotive rubber products.

[0003] Traditional tensile testing machines often lack precision and timeliness in measuring specimen displacement during testing, and the absence of effective displacement monitoring devices makes it difficult for operators to monitor specimen deformation in real time, hindering precise control and data analysis of the testing process. With the automotive industry's ever-increasing quality requirements for rubber products, traditional tensile testing machines can no longer meet the high-precision, high-efficiency, and high-reliability testing needs of modern automotive rubber production. Therefore, a new tensile testing machine for automotive rubber production has been proposed to address these issues. Utility Model Content

[0004] (a) Technical problems to be solved The purpose of this invention is to solve the problem that traditional tensile testing machines lack effective displacement monitoring devices, which is not conducive to precise control and data analysis of the testing process. Therefore, this invention proposes a tensile testing machine for automotive rubber production.

[0005] (II) Technical Solution The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A tensile testing machine for automotive rubber production includes a worktable, a base fixedly connected to the top of the worktable, a first clamping mechanism on the base, a slide rail fixedly connected to the rear end of the base, a fixed seat fixedly connected to the top of the slide rail, a sliding mechanism between the base and the fixed seat, the sliding mechanism being slidably connected to the front end of the slide rail, a second clamping mechanism on the sliding mechanism, a motor for driving the sliding mechanism to move up and down installed on the inner side of the worktable, a displacement sensor installed on the inner side of the base, and a force sensor installed on the motor.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Preferably, the first clamping mechanism includes a first threaded block, and two first threaded blocks are fixedly connected to the inner side of the base. A first screw is threadedly connected to the inner side of each of the two first threaded blocks, and a first screw head is fixedly connected to the opposite side of each of the two first screws.

[0008] Preferably, the sliding mechanism includes a sliding seat, the front end of the slide rail is slidably connected to the sliding seat, the top end of the sliding seat is fixedly connected to a threaded sleeve, the inner side of the threaded sleeve is threadedly connected to a lead screw, the lead screw is rotatably connected to the inner side of the sliding seat, the lead screw is rotatably connected to the inner side of the fixed seat, and the output end of the motor is fixedly connected to the bottom end of the lead screw.

[0009] Preferably, the second clamping mechanism includes a second threaded block, and two second threaded blocks are fixedly connected to the front end of the sliding seat. A second screw is threadedly connected to the inner side of each of the two second threaded blocks, and a second screw head is fixedly connected to the opposite side of each of the two second screws.

[0010] Preferably, two strip-shaped pads are fixedly connected to the bottom end of the workbench.

[0011] Preferably, a handle is fixedly connected to each of the two strip-shaped pads on opposite sides.

[0012] (III) Beneficial Effects Compared with the prior art, the technical solution of this application has the following beneficial technical effects: This invention incorporates displacement and force sensors, which enable automatic data acquisition, eliminating human error in readings and improving measurement accuracy and efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the first clamping mechanism of this utility model; Figure 3 This is a schematic diagram of the sliding mechanism structure of this utility model; Figure 4 This is a schematic diagram of the second clamping mechanism of this utility model.

[0014] In the diagram: 1. Workbench; 2. Base; 3. First clamping mechanism; 31. First threaded block; 32. First screw; 33. First screw head; 4. Fixed seat; 5. Sliding mechanism; 51. Sliding seat; 52. Threaded sleeve; 53. Lead screw; 6. Second clamping mechanism; 61. Second threaded block; 62. Second screw; 63. Second screw head; 7. Motor; 8. Displacement sensor; 9. Strip pad; 10. Handle; 11. Slide rail. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] In the embodiments, by Figure 1-4 A tensile testing machine for automotive rubber production is provided, comprising a worktable 1, a base 2 fixedly connected to the top of the worktable 1, a first clamping mechanism 3 provided on the base 2, a slide rail 11 fixedly connected to the rear end of the base 2, a fixed seat 4 fixedly connected to the top of the slide rail 11, a sliding mechanism 5 provided between the base 2 and the fixed seat 4, the sliding mechanism 5 being slidably connected to the front end of the slide rail 11, a second clamping mechanism 6 provided on the sliding mechanism 5, a motor 7 for driving the sliding mechanism 5 to move up and down installed on the inner side of the worktable 1, a displacement sensor 8 installed on the inner side of the base 2, and a force sensor provided on the motor 7.

[0017] With the above setup, one end of the automotive rubber sample to be tested (such as a rubber strip, sealing ring, etc.) is placed into the first clamping mechanism 3 on the base 2 and clamped. Then, the other end of the sample is placed into the second clamping mechanism 6 on the sliding mechanism 5 and clamped. At this time, the sample is in a naturally straight state. The equipment is started, the displacement sensor 8 and force sensor are zeroed, and the initial length and zero force point of the sample are recorded. The motor 7 (usually a servo motor) inside the worktable 1 is started. The motor 7 drives the sliding mechanism 5 to move smoothly upward along the slide rail 11. Since the second clamping mechanism 6 is fixed on the sliding mechanism 5, when the sliding mechanism 5 moves upward, it will apply a continuous and gradually increasing tensile force to the rubber sample. The displacement sensor 8 monitors and records the moving distance of the sliding mechanism 5 in real time, that is, the tensile deformation (elongation) of the sample. The force sensor is used to monitor and record the tensile force value borne by the sample in real time. The test will continue until the preset termination condition is met. Common conditions include: Condition 1 (Tension Break Test): Continuous stretching until the rubber sample breaks. The equipment records the maximum tensile force (tensile strength) and total elongation at the moment of breakage. Condition 2 (constant load test): The tensile force stops after reaching a preset value, and the elongation at this point is measured. Condition 3 (constant elongation test): The elongation stops after reaching a preset value, and the tensile force at this point is measured. After the test, motor 7 will reverse and return to the starting position. The "tensile force-displacement" curve data throughout the process can be output by the controller, and key performance parameters such as tensile strength, elongation at break, and modulus of elasticity can be calculated. The relevant calculation formulas are existing technology and will not be elaborated further.

[0018] Reference Figure 1-4The first clamping mechanism 3 includes a first threaded block 31. Two first threaded blocks 31 are fixedly connected to the inner side of the base 2. A first screw 32 is threadedly connected to the inner side of each of the two first threaded blocks 31. A first screw head 33 is fixedly connected to the opposite side of each of the two first screws 32. The second clamping mechanism 6 includes a second threaded block 61. Two second threaded blocks 61 are fixedly connected to the front end of the sliding seat 51. A second screw 62 is threadedly connected to the inner side of each of the two second threaded blocks 61. A second screw head 63 is fixedly connected to the opposite side of each of the two second screws 62. With the above structural setup, the prepared standard-shaped rubber sample (usually dumbbell-shaped or strip-shaped) is ready. Ensure the clamping openings of the first clamping mechanism 3 and the second clamping mechanism 6 are in the loosened state, i.e., the two first screws 32 and the two second screws 62 are screwed out, leaving sufficient space for inserting the sample. Place the upper end of the rubber sample between the two first threaded blocks 31 of the first clamping mechanism 3 on the base 2. The operator simultaneously holds the two first screw heads 33 with both hands and then rotates the two first screws 32 synchronously and evenly inward (i.e., in opposite directions). As the first screws 32 are screwed in, their ends will press against the sample from the inside, and through continuous tightening, firmly press the upper end of the sample into the clamp. Ensure the sample remains vertical on the base 2 and the clamping position is centered and not tilted. Gently support or straighten the lower end of the rubber sample by hand and place it between the two second threaded blocks 61 of the second clamping mechanism 6 on the sliding mechanism 5. Similarly, hold both second screw heads 63 with both hands simultaneously, and then rotate both second screws 62 inwards synchronously and evenly. By tightening the second screws 62, firmly press the lower end of the sample into the clamp of the sliding seat 51. Check that the sample is held vertically and parallel between the two sets of clamps, ensuring there is no obvious bending or tilting. Confirm that the clamps are tightened to prevent the sample from slipping or falling off during the stretching process. At this point, the clamping process of the rubber sample is complete, and the motor 7 can be started to perform the tensile test.

[0019] Reference Figure 1-4 The sliding mechanism 5 includes a sliding seat 51, the front end of the slide rail 11 is slidably connected to the sliding seat 51, the top end of the sliding seat 51 is fixedly connected to the threaded sleeve 52, the inner side of the threaded sleeve 52 is threadedly connected to the lead screw 53, the lead screw 53 is rotatably connected to the inner side of the sliding seat 51, the lead screw 53 is rotatably connected to the inner side of the fixed seat 4, and the output end of the motor 7 is fixedly connected to the bottom end of the lead screw 53. With the above structural setup, the operator starts the motor 7 via the control system. The output shaft of the motor 7 begins to rotate. Since the output end is fixedly connected to the bottom end of the lead screw 53, it directly drives the lead screw 53 to rotate forward or backward. The lead screw 53 rotates stably under the bearing support of the fixed seat 4 and the sliding seat 51. The threaded sleeve 52 is threadedly engaged with the lead screw 53. The threaded sleeve 52 is restricted by the sliding seat 51 and cannot rotate with the lead screw 53. When the lead screw 53 rotates, and the threaded sleeve 52 is restricted from rotating, the threaded sleeve 52 will generate linear motion along the axial direction of the lead screw 53. Therefore, when the lead screw 53 rotates, the threaded sleeve 52 will carry the entire sliding seat 51 and move smoothly upward or downward along the guide of the slide rail 11. When the sliding seat 51 moves upward, the second clamping mechanism 6 fixed on it also moves upward. Since the upper end of the rubber sample is clamped by the fixed first clamping mechanism 3, and the lower end is clamped by the second clamping mechanism 6. Therefore, when the second clamping mechanism 6 moves upward, a continuous and uniform tensile force is applied to the rubber sample. When the test reaches the preset conditions (such as sample breakage, reaching the set force value, or displacement), the motor 7 stops rotating. The lead screw 53 stops rotating, and the sliding seat 51 immediately stops at its current position. After the test, the control system commands the motor 7 to reverse, driving the lead screw 53 to rotate in the opposite direction, thereby causing the sliding seat 51 to move downward along the slide rail 11 back to its initial position, making it convenient for the operator to remove the tested sample.

[0020] Reference Figure 1-4 Among them, two strip-shaped pads 9 are fixedly connected to the bottom end of the workbench 1; Through the above structural design, the two strip-shaped pads 9 increase the contact area between the workbench 1 and the placement surface (such as a test bench), reducing the equipment's sensitivity to uneven ground and making the equipment more stable. During tensile testing, especially at the moment of sample breakage, the equipment may be subjected to impact and vibration. The strip-shaped pads 9 (with rubber or anti-slip texture) provide effective friction, preventing the equipment from shifting or sliding during operation and ensuring testing safety.

[0021] Reference Figure 1-4 Among them, handles 10 are fixedly connected to the opposite sides of the two strip-shaped pads 9; With the above structural design, the tensile testing machine, as a benchtop device made of metal, is typically quite heavy. Without the handle 10, moving it requires wrapping one's arms around or supporting the edge of the workbench 1, which is very strenuous and unsafe. The handle 10 provides the operator with a clear and comfortable point of force application, making it easy and stable for two or more people to move the equipment together.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tensile testing machine for automotive rubber production, characterized in that, The system includes a workbench (1), a base (2) fixedly connected to the top of the workbench (1), a first clamping mechanism (3) provided on the base (2), a slide rail (11) fixedly connected to the rear end of the base (2), a fixed seat (4) fixedly connected to the top of the slide rail (11), a sliding mechanism (5) provided between the base (2) and the fixed seat (4), the sliding mechanism (5) being slidably connected to the front end of the slide rail (11), a second clamping mechanism (6) provided on the sliding mechanism (5), a motor (7) for driving the sliding mechanism (5) to move up and down is installed on the inner side of the workbench (1), a displacement sensor (8) is installed on the inner side of the base (2), and a force sensor is provided on the motor (7).

2. The tensile testing machine for automotive rubber production according to claim 1, characterized in that: The first clamping mechanism (3) includes a first threaded block (31). Two first threaded blocks (31) are fixedly connected to the inner side of the base (2). The inner sides of the two first threaded blocks (31) are threaded with a first screw (32). The opposite sides of the two first screws (32) are fixedly connected with a first screw head (33).

3. A tensile testing machine for automotive rubber production according to claim 1, characterized in that: The sliding mechanism (5) includes a sliding seat (51), the front end of the slide rail (11) is slidably connected to the sliding seat (51), the top end of the sliding seat (51) is fixedly connected to a threaded sleeve (52), the inner side of the threaded sleeve (52) is threadedly connected to a lead screw (53), the lead screw (53) is rotatably connected to the inner side of the sliding seat (51), the lead screw (53) is rotatably connected to the inner side of the fixed seat (4), and the output end of the motor (7) is fixedly connected to the bottom end of the lead screw (53).

4. A tensile testing machine for automotive rubber production according to claim 3, characterized in that: The second clamping mechanism (6) includes a second threaded block (61). Two second threaded blocks (61) are fixedly connected to the front end of the sliding seat (51). The inner sides of the two second threaded blocks (61) are threaded with second screws (62). The opposite sides of the two second screws (62) are fixedly connected with second screw heads (63).

5. A tensile testing machine for automotive rubber production according to claim 1, characterized in that: Two strip-shaped pads (9) are fixedly connected to the bottom of the workbench (1).

6. A tensile testing machine for automotive rubber production according to claim 5, characterized in that: A handle (10) is fixedly connected to each of the two strip pads (9) on opposite sides.

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