A tensile testing process for automobile rubber parts

Abstract

The present invention relates to the technical field of tensile testing, and specifically to a tensile testing process for automobile rubber parts, comprising a chassis, and a panel fixedly mounted on the chassis; a stretching base is slidably arranged on the chassis, and a clamping mechanism is arranged on the stretching base; a transverse stretching mechanism is arranged on the chassis, and the transverse stretching mechanism can drive two stretching bases to move away from each other; a gradual change mechanism is arranged between the transverse stretching mechanism and the clamping mechanism, and the gradual change mechanism can reduce or increase the clamping force of the clamping mechanism; a longitudinal stretching mechanism is arranged on the chassis, and a longitudinal protruding column is connected to the longitudinal stretching mechanism; the longitudinal stretching mechanism can drive the longitudinal protruding column to slide longitudinally; a trigger transmission mechanism is arranged between the transverse stretching mechanism and the longitudinal stretching mechanism, and the transverse stretching mechanism can drive the longitudinal stretching mechanism to move through the trigger transmission mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of tensile testing, in particular to a tensile testing process for automobile rubber parts. Background Art

[0002] There are many rubber parts on the car, such as water pipes and oil pipes used for cold water pipes in the engine cooling system, oil inlet pipes and return pipes in the engine fuel bribery system, and oil pipes in the power steering system; dust covers are used for dust covers in the steering system to reduce the wear of dust and debris on the parts and extend their service life; seals and linings are used for various sealing and waterproof linings on the car, such as doors, windows, front windshields, etc.

[0003] Before we use these rubber parts, we need to conduct a series of quality inspections and safety inspections on them. One of the more important ones is to conduct tensile tests on rubber parts. The purpose of conducting tensile tests on rubber strip parts such as seals and linings is to detect their maximum deformation and damage, so that their functionality can be maximized during design or use. Common tensile testing methods for strip rubber parts include more accurate tensile testing equipment and simple manual pulling methods.

[0004] When using more precise tensile testing and equipment, since most testers on the market are hard clamps, and since rubber parts are a material with good elasticity, in order to ensure that the rubber parts will not easily separate from the clamps during the entire testing process, the clamping force given to the rubber parts by the hard clamps is very large. When the clamping force is too large, the rubber parts will often be squeezed and damaged, resulting in inaccurate test results. Summary of the invention

[0005] The purpose of the present invention is to provide a tensile testing process for automobile rubber parts to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a tensile testing process for automobile rubber parts, comprising the following steps:

[0007] Step 1: Sample preparation: Cut the strip rubber parts into the size and shape that meet the test requirements, and check whether there is any damage on the surface of the sample that may affect the test results;

[0008] Step 2: Tensile test: Clamp the sample on the tensile test equipment and start the equipment for testing;

[0009] Step 3: Data recording: Read and record the data transmitted by the sensor on the tensile test equipment when the sample is broken:

[0010] Step 4: Data analysis: Input the test data into the analysis equipment to analyze the maximum tensile force that the sample can withstand.

[0011] As a further solution of the present invention: the tensile testing equipment:

[0012] It includes a chassis, and a panel fixedly mounted on the chassis;

[0013] Two symmetrical stretching bases are slidably arranged on the chassis, and a clamping mechanism is arranged on the stretching bases;

[0014] The chassis is provided with a transverse stretching mechanism connected to the stretching base, and the transverse stretching mechanism can drive the two stretching bases to move closer to each other or away from each other;

[0015] A gradual change mechanism is also provided between the transverse stretching mechanism and the clamping mechanism, and the gradual change mechanism can reduce or increase the clamping force of the clamping mechanism when the transverse stretching mechanism is in action;

[0016] The chassis is provided with a longitudinal stretching mechanism, and the longitudinal stretching mechanism is connected with a longitudinal protruding column; the longitudinal stretching mechanism can drive the longitudinal protruding column to slide longitudinally;

[0017] A trigger transmission mechanism is arranged between the transverse stretching mechanism and the longitudinal stretching mechanism. When the transverse stretching mechanism is in motion, the longitudinal stretching mechanism can be driven to move by the trigger transmission mechanism.

[0018] As a further solution of the present invention: the clamping mechanism comprises two symmetrically arranged clamping plates; the stretching base is provided with a clamping slot, in which a clamping protrusion fixedly connected to the clamping plate is slidably engaged; the clamping slot is also slidably engaged with an extrusion protrusion, and an extrusion plate is fixedly installed on the extrusion protrusion;

[0019] A telescopic sleeve is fixedly installed on the extrusion plate, a telescopic column is slidably embedded in the telescopic sleeve, a clamping spring is fixedly installed in the telescopic sleeve, and two ends of the clamping spring are respectively in conflict with the telescopic sleeve and the telescopic column.

[0020] As a further solution of the present invention: the transverse stretching mechanism includes a motor fixedly mounted on the chassis, a transverse rotating shaft fixedly connected to the output end of the motor, transverse threaded protrusions fixedly and symmetrically mounted on both ends of the transverse rotating shaft, a transverse internal threaded sleeve fixedly connected to the stretching base is threadedly connected to the transverse threaded protrusion; a transverse sliding groove slidingly matched with the transverse internal threaded sleeve is provided on the panel.

[0021] As a further solution of the present invention: the gradual change mechanism includes a guide groove provided on the panel, in which a guide protrusion fixedly connected to the extrusion plate is slidably engaged; and a guide groove slidably engaged with the guide protrusion is provided on the stretching base.

[0022] As a further solution of the present invention: the trigger transmission mechanism includes a driving shaft rotatably mounted on the chassis, and the driving shaft is connected to the transverse rotating shaft through a belt; a first transmission wheel is fixedly mounted on the driving shaft;

[0023] The trigger transmission mechanism also includes a driven shaft rotatably mounted on the chassis, a second transmission wheel cooperating with the first transmission wheel being slidably mounted on the driven shaft, and the second transmission wheel and the transverse internal threaded sleeve are in mutual abutment with each other; a limit ring is fixedly mounted on one end of the driven shaft away from the driving shaft; a transmission spring is fixedly mounted on the second transmission wheel, and two ends of the transmission spring are respectively in abutment with the second transmission wheel and the limit ring.

[0024] As a further solution of the present invention: the longitudinal stretching mechanism includes a longitudinal rotating shaft rotatably mounted on the chassis, and the longitudinal rotating shaft is connected to the driven shaft via a bevel gear set; a longitudinal threaded protrusion is fixedly mounted on the longitudinal rotating shaft, and a longitudinal internal threaded sleeve fixedly connected to the longitudinal protrusion column is threadedly connected to the longitudinal threaded protrusion; a longitudinal guide groove slidably engaged with the longitudinal protrusion column is opened on the panel.

[0025] As a further solution of the present invention: a surface of the clamping plate away from the telescopic column is a rough surface with large friction resistance.

[0026] As a further solution of the present invention: a guardrail is fixedly installed on the panel, and a plurality of observation ports are provided on the guardrail.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: through the cooperation between the transverse stretching mechanism, the clamping mechanism and the gradual change mechanism, it can be achieved that the clamping mechanism can only clamp the rubber component during the initial clamping, ensuring that it will not be separated from the clamping mechanism, and the clamping mechanism will gradually increase the clamping force during the stretching process, that is, it is ensured that most of the original length of the rubber component will be stretched under the action of the transverse stretching mechanism (due to the small initial clamping force of the clamping mechanism, the clamped part will be stretched and deformed by the transverse stretching mechanism while the gradual change mechanism is in action, making the detection result more accurate); and it avoids the initial clamping force being too high, thereby clamping the rubber component to be tested, resulting in inaccurate detection results; through the cooperation between the transverse stretching mechanism, the trigger transmission mechanism and the longitudinal stretching mechanism, transverse and longitudinal tensile forces are provided to the rubber component, which can be used to detect rubber components with good tensile performance, and the space occupied by the tensile test device will not increase. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The present invention is a process flow diagram of an embodiment of a tensile testing process for automobile rubber parts.

[0029] Figure 2 The present invention is a structural schematic diagram of an embodiment of a tensile testing process for automobile rubber parts.

[0030] Figure 3 The figure is a schematic diagram of the structure of a chassis in one embodiment of a tensile testing process for automobile rubber parts.

[0031] Figure 4 The figure is a schematic diagram of the structure of the clamping mechanism and the panel in one embodiment of the tensile testing process for automobile rubber parts.

[0032] Figure 5 The present invention is a schematic structural diagram of a transverse stretching mechanism in one embodiment of a tensile testing process for automotive rubber parts.

[0033] Figure 6 This is a schematic diagram of the structure of a stretching base in an embodiment of a tensile testing process for automotive rubber parts.

[0034] Figure 7 The figure is a schematic diagram of the structure of a clamping mechanism in one embodiment of a tensile testing process for automobile rubber parts.

[0035] Figure 8 The present invention is a schematic diagram of the structure of a telescopic sleeve and a telescopic column in one embodiment of a tensile testing process for automobile rubber parts.

[0036] Fig. 9 The figure is a schematic structural diagram of a longitudinal stretching mechanism in one embodiment of a tensile testing process for automotive rubber parts.

[0037] Fig.10The present invention is a schematic structural diagram of a trigger transmission mechanism in one embodiment of a tensile testing process for automobile rubber parts.

[0038] In the figure: 1. Chassis;

[0039] 2. Panel; 201. Horizontal slide; 202. Guide groove; 203. Longitudinal slide;

[0040] 3. Clamping plate; 301. Clamping protrusion; 302. Telescopic column;

[0041] 4. Motor;

[0042] 5. lateral rotating shaft; 501. lateral threaded protrusion;

[0043] 6. Horizontal internal thread sleeve;

[0044] 7. stretching base; 701. clamping slide; 702. guide slide;

[0045] 8. Extrusion plate; 801. Extrusion protrusion; 802. Telescopic sleeve; 803. Guide protrusion;

[0046] 9. Clamping spring;

[0047] 10. driving shaft; 1001. first transmission wheel;

[0048] 11. driven shaft; 1101. second transmission wheel; 1102. limiting ring;

[0049] 12. Transmission spring;

[0050] 13. longitudinal rotating shaft; 1301. longitudinal threaded protrusion;

[0051] 14. Longitudinal internal threaded sleeve;

[0052] 15. Longitudinal raised column. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may 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 herein are for illustrative purposes only and are not intended to be the only embodiment.

[0055] See also Figure 1 to Figure 9 In an embodiment of the present invention, a tensile testing process for automobile rubber parts comprises the following steps:

[0056] Step 1: Sample preparation: Cut the strip rubber parts into the size and shape that meet the test requirements, and check whether there is any damage on the surface of the sample that may affect the test results;

[0057] Step 2: Tensile test: Clamp the sample on the tensile test equipment and start the equipment for testing;

[0058] Step 3: Data recording: Read and record the data transmitted by the sensor on the tensile test equipment when the sample is broken:

[0059] Step 4: Data analysis: Input the test data into the analysis equipment to analyze the maximum tensile force that the sample can withstand.

[0060] As a further solution of the present invention: the tensile testing device comprises a chassis 1, and a panel 2 fixedly mounted on the chassis 1;

[0061] Two symmetrical stretching bases 7 are slidably arranged on the chassis 1, and a clamping mechanism is arranged on the stretching base 7;

[0062] The chassis 1 is provided with a transverse stretching mechanism connected to the stretching base 7, and the transverse stretching mechanism can drive the two stretching bases 7 to move closer to each other or away from each other;

[0063] A gradual change mechanism is also provided between the transverse stretching mechanism and the clamping mechanism, and the gradual change mechanism can reduce or increase the clamping force of the clamping mechanism when the transverse stretching mechanism is in action;

[0064] The chassis 1 is provided with a longitudinal stretching mechanism, and a longitudinal protruding column 15 is connected to the longitudinal stretching mechanism; the longitudinal stretching mechanism can drive the longitudinal protruding column 15 to slide longitudinally;

[0065] A trigger transmission mechanism is arranged between the transverse stretching mechanism and the longitudinal stretching mechanism. When the transverse stretching mechanism is in motion, the longitudinal stretching mechanism can be driven to move by the trigger transmission mechanism.

[0066] In this embodiment, in the initial state, the relative distance between the two stretching bases 7 is the shortest, so that the clamping mechanism can work without stretching the rubber component. The two ends of the strip rubber component to be tested are clamped horizontally by the clamping mechanism. Since the rubber material has good extensibility, in order to accurately measure the maximum tensile force it can withstand, the clamping mechanism can only provide a relatively small clamping force, which can prevent the component from detaching from the clamping mechanism at the initial stage of the test.

[0067] After the parts are clamped by the clamping mechanism, the transverse stretching mechanism drives the two stretching bases 7 to move away from each other, so that the base clamping mechanisms on the stretching bases 7 also move away from each other, so that the clamped rubber parts are stretched transversely. Since the rubber parts tend to break away from the clamping mechanism after being stretched, a gradual mechanism is added. The gradual mechanism gradually increases the clamping force of the clamping mechanism while the transverse stretching mechanism is in action to offset the driving force of the rubber parts to break away from the clamping mechanism, so that the stretched parts will not break away from the clamping mechanism due to themselves. That is, it is ensured that most of the original length of the rubber parts will be stretched by the transverse stretching mechanism (because the initial clamping force of the clamping mechanism is small, the clamped part will be stretched and deformed by the transverse stretching mechanism while the gradual mechanism is in action, making the test results more accurate); and it also avoids the initial clamping force being too high, which may damage the rubber parts to be tested and cause inaccurate test results.

[0068] When the transverse stretching mechanism stretches the rubber component to a set position and there is a possibility of being stretched, the transverse stretching mechanism drives the longitudinal stretching mechanism to move by triggering the transmission mechanism, and drives the longitudinal protrusion column 15 to slide longitudinally to give the rubber component a longitudinal stretch. Through the cooperation between the transverse stretching mechanism, the triggering transmission mechanism and the longitudinal stretching mechanism, it can be used to detect rubber components with good stretching performance.

[0069] When the rubber component is pulled off, the tension sensor arranged on the chassis 1 detects the tension value at the moment when the rubber component is pulled off and records it.

[0070] As a further solution of the present invention, the clamping mechanism includes two symmetrically arranged clamping plates 3; the stretching base 7 is provided with a clamping groove 701, and a clamping protrusion 301 fixedly connected to the clamping plate 3 is slidably engaged in the clamping groove 701; an extrusion protrusion 801 is also slidably engaged in the clamping groove 701, and an extrusion plate 8 is fixedly installed on the extrusion protrusion 801;

[0071] A telescopic sleeve 802 is fixedly mounted on the extrusion plate 8, a telescopic column 302 is slidably engaged in the telescopic sleeve 802, a clamping spring 9 is fixedly mounted in the telescopic sleeve 802, and two ends of the clamping spring 9 are respectively in conflict with the telescopic sleeve 802 and the telescopic column 302.

[0072] In this embodiment, the clamping plate 3 is pushed toward the extrusion plate 8 by an external force. During this process, the telescopic column 302 is driven to slide inward in the telescopic sleeve 802, and the clamping spring 9 is compressed. At this time, a clamping space appears between the two clamping plates 3, and the two horizontal ends of the rubber component to be tested are clamped on the two clamping mechanisms respectively.

[0073] When the rubber component to be tested is in a suitable clamping position, the external force is withdrawn, and under the elastic force of the clamping spring 9, the telescopic column 302 will slide outward in the telescopic sleeve 802. During this process, the clamping protrusion 301 will slide in the clamping groove 701.

[0074] The elastic force of the clamping spring 9 is used as the clamping force, which can not only clamp the rubber component but also ensure that the rubber component will not be damaged by the clamping.

[0075] As a further solution of the present invention, the transverse stretching mechanism includes a motor 4 fixedly mounted on the chassis 1, a transverse rotating shaft 5 fixedly connected to the output end of the motor 4, transverse threaded protrusions 501 are fixedly and symmetrically mounted on both ends of the transverse rotating shaft 5, and a transverse internal threaded sleeve 6 fixedly connected to the stretching base 7 is threadedly connected to the transverse threaded protrusion 501; a transverse sliding groove 201 that slides with the transverse internal threaded sleeve 6 is opened on the panel 2.

[0076] In this embodiment, the transverse rotating shaft 5 is driven to rotate by starting the motor 4, and the transverse internal threaded sleeve 6 is driven to slide in the transverse slide groove 201 through the thread cooperation between the transverse threaded protrusion 501 and the transverse internal threaded sleeve 6. Since the thread directions of the transverse threaded protrusions 501 at both ends of the transverse rotating shaft 5 are opposite, the two transverse internal threaded sleeves 6 are close to or away from each other, thereby driving the two stretching bases 7 to approach or move away from each other.

[0077] As a further solution of the present invention, the gradual change mechanism includes a guide groove 202 opened on the panel 2, in which a guide protrusion 803 fixedly connected to the extrusion plate 8 is slidably engaged; a guide groove 702 slidably engaged with the guide protrusion 803 is opened on the stretching base 7.

[0078] In this embodiment, the guide groove 202 is an inclined groove, and its inclination direction is along the middle of the panel 2 toward one side of the panel 2 and gradually approaches the horizontal sliding groove 201.

[0079] When the transverse mechanism drives the stretching base 7 away from each other, the guide protrusion 803 will slide in the guide groove 202, so that the distance between the guide protrusion 803 and the guide groove 202 becomes closer and closer, thereby driving the guide protrusion 803 to slide in the guide groove 702 toward the clamping plate 3, so that the clamping spring 9 is compressed and its elastic force is gradually increased.

[0080] As a further solution of the present invention, the trigger transmission mechanism includes a driving shaft 10 rotatably mounted on the chassis 1, and the driving shaft 10 is connected to the transverse rotating shaft 5 through a belt; a first transmission wheel 1001 is fixedly mounted on the driving shaft 10;

[0081] The trigger transmission mechanism also includes a driven shaft 11 rotatably mounted on the chassis 1, and a second transmission wheel 1101 cooperating with the first transmission wheel 1001 is slidably mounted on the driven shaft 11, and the second transmission wheel 1101 is in contact with the transverse internal threaded sleeve 6; a limit ring 1102 is fixedly mounted on one end of the driven shaft 11 away from the driving shaft 10; a transmission spring 12 is fixedly mounted on the second transmission wheel 1101, and the two ends of the transmission spring 12 are respectively in contact with the second transmission wheel 1101 and the limit ring 1102.

[0082] In this embodiment, a thorn gear is fixedly provided on one side of the first transmission wheel 1001 close to the second transmission wheel 1101, and the direction of the tip thereof is consistent with the rotation direction of the transverse shaft 5 when the transverse stretching mechanism drives the stretching base 7 to move away from each other. A thorn gear that matches the thorn gear on the first transmission wheel 1001 is fixedly provided on one side of the second transmission wheel 1101 close to the first transmission wheel 1001, and the direction of the tip thereof is opposite to that on the first transmission wheel 1001.

[0083] When the transverse rotating shaft 5 rotates, the driving shaft 10 is driven to rotate through the belt, thereby driving the first transmission wheel 1001 to rotate.

[0084] In the initial position, since the transverse internally threaded sleeve 6 and the second transmission wheel 1101 are in conflict with each other, the distance between the second transmission wheel 1101 and the limiting ring 1102 is the shortest, and the transmission spring 12 is compressed.

[0085] When the lateral stretching mechanism is in action, the lateral internal threaded sleeve 6 on one side of the active shaft 10 will gradually approach the first transmission wheel 1001, so that the compressed limit of the transmission spring 12 will gradually move away. Under the elastic force of the transmission spring 12, the second transmission wheel 1101 will slide on the driven shaft 11 and gradually approach the first transmission wheel 1001 until the two are completely fitted. At this time, due to the mutual cooperation of the thorn gears of the two, the rotating first transmission wheel 1001 will rotate synchronously with the second transmission wheel 1101, thereby driving the driven shaft 11 to rotate.

[0086] During the synchronous rotation of the first transmission wheel 1001 and the second transmission wheel 1101 , the transverse stretching mechanism will still drive the stretching base 7 to move away from each other.

[0087] As a further solution of the present invention, the longitudinal stretching mechanism includes a longitudinal rotating shaft 13 rotatably mounted on the chassis 1, and the longitudinal rotating shaft 13 is connected to the driven shaft 11 through a bevel gear set; a longitudinal threaded protrusion 1301 is fixedly mounted on the longitudinal rotating shaft 13, and a longitudinal internal threaded sleeve 14 fixedly connected to the longitudinal protrusion column 15 is threadedly connected to the longitudinal threaded protrusion 1301; a longitudinal sliding groove 203 slidably engaged with the longitudinal protrusion column 15 is opened on the panel 2.

[0088] In this embodiment, when the driven shaft 11 rotates, the bevel gear set drives the longitudinal rotating shaft 13 to rotate. The longitudinal threaded protrusion 1301 and the longitudinal internal threaded sleeve 14 are matched to drive the longitudinal internal threaded sleeve 14 to slide, thereby driving the longitudinal protrusion column 15 to slide in the longitudinal slide groove 203.

[0089] Through the cooperation between the transverse stretching mechanism and the longitudinal stretching mechanism, transverse and longitudinal tensile forces are provided to the rubber parts, which can be used to detect rubber parts with good tensile properties, and the space occupied by the tensile test device will not increase.

[0090] As a further solution of the present invention, a surface of the clamping plate 3 away from the telescopic column 302 is a rough surface with large friction resistance.

[0091] In this embodiment, the side with greater friction resistance is used as the clamping surface, so that the clamping stability of the clamping mechanism can be ensured, and it can be ensured that the rubber component will not be detached from the clamp during the test process.

[0092] As a further solution of the present invention, a guardrail is fixedly installed on the panel 2, and a plurality of observation ports are provided on the guardrail.

[0093] In this embodiment, since the rubber component will generate great impact kinetic energy at the moment of breaking, in order to protect the physical and mental health of the inspectors, a guardrail is installed to consume the impact kinetic energy. At the same time, the inspectors can carefully observe the performance changes of the rubber component during the stretching process through the observation port.

[0094] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0095] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A tensile testing process for automotive rubber parts, characterized in that: The following steps are involved: Step 1: Sample preparation: Cut the strip rubber parts into the size and shape that meet the test requirements, and check whether there is any damage on the surface of the sample that may affect the test results; Step 2: Tensile test: Clamp the sample on the tensile test equipment and start the equipment for testing; Step 3: Data recording: Read and record the data transmitted by the sensor on the tensile test equipment when the sample is broken: Step 4: Data analysis: Input the test data into the analysis equipment to analyze the maximum tensile force that the sample can withstand; The tensile testing device in step 2 comprises a chassis (1), and a panel (2) fixedly mounted on the chassis (1); Two symmetrical stretching bases (7) are slidably arranged on the chassis (1), and a clamping mechanism is arranged on the stretching base (7); The chassis (1) is provided with a transverse stretching mechanism connected to the stretching base (7), and the transverse stretching mechanism can drive the two stretching bases (7) to move closer to each other or away from each other; A gradual change mechanism is also provided between the transverse stretching mechanism and the clamping mechanism, and the gradual change mechanism can reduce or increase the clamping force of the clamping mechanism when the transverse stretching mechanism is in action; The chassis (1) is provided with a longitudinal stretching mechanism, and a longitudinal protruding column (15) is connected to the longitudinal stretching mechanism; the longitudinal stretching mechanism can drive the longitudinal protruding column (15) to slide longitudinally; A trigger transmission mechanism is provided between the transverse stretching mechanism and the longitudinal stretching mechanism, and when the transverse stretching mechanism is actuated, the longitudinal stretching mechanism can be driven to actuate through the trigger transmission mechanism; The clamping mechanism comprises two symmetrically arranged clamping plates (3); the stretching base (7) is provided with a clamping groove (701), in which a clamping protrusion (301) fixedly connected to the clamping plate (3) is slidably engaged; an extrusion protrusion (801) is also slidably engaged in the clamping groove (701), and an extrusion plate (8) is fixedly mounted on the extrusion protrusion (801); A telescopic sleeve (802) is fixedly mounted on the extrusion plate (8), a telescopic column (302) is slidably engaged in the telescopic sleeve (802), a clamping spring (9) is fixedly mounted in the telescopic sleeve (802), and two ends of the clamping spring (9) are in mutual contact with the telescopic sleeve (802) and the telescopic column (302), respectively; The transverse stretching mechanism comprises a motor (4) fixedly mounted on the chassis (1); a transverse rotating shaft (5) is fixedly connected to the output end of the motor (4); transverse threaded protrusions (501) are fixedly and symmetrically mounted on both ends of the transverse rotating shaft (5); and a transverse internal threaded sleeve (6) fixedly connected to the stretching base (7) is threadedly connected to the transverse threaded protrusion (501); The panel (2) is provided with a transverse sliding groove (201) which is slidably matched with the transverse internally threaded sleeve (6); The trigger transmission mechanism comprises a driving shaft (10) rotatably mounted on the chassis (1), and the driving shaft (10) is connected to the transverse rotating shaft (5) via a belt; a first transmission wheel (1001) is fixedly mounted on the driving shaft (10); The trigger transmission mechanism further comprises a driven shaft (11) rotatably mounted on the chassis (1); a second transmission wheel (1101) cooperating with the first transmission wheel (1001) is slidably mounted on the driven shaft (11), and the second transmission wheel (1101) and the transverse internally threaded sleeve (6) are in contact with each other; and a limit ring (1102) is fixedly mounted on one end of the driven shaft (11) away from the driving shaft (10).

2. The automotive rubber parts tensile testing process according to claim 1, characterized in that: The gradual change mechanism comprises a guide groove (202) provided on the panel (2), a guide protrusion (803) fixedly connected to the extrusion plate (8) being slidably engaged in the guide groove (202); and a guide sliding groove (702) slidably engaged with the guide protrusion (803) being provided on the stretching base (7).

3. The automotive rubber parts tensile testing process according to claim 1, characterized in that: A transmission spring (12) is fixedly mounted on the second transmission wheel (1101), and two ends of the transmission spring (12) are in contact with the second transmission wheel (1101) and the limiting ring (1102) respectively.

4. The automotive rubber parts tensile testing process according to claim 3, characterized in that: The longitudinal stretching mechanism comprises a longitudinal rotating shaft (13) rotatably mounted on the chassis (1), and the longitudinal rotating shaft (13) is connected to the driven shaft (11) via a bevel gear set; a longitudinal threaded protrusion (1301) is fixedly mounted on the longitudinal rotating shaft (13), and a longitudinal internal threaded sleeve (14) fixedly connected to the longitudinal protrusion column (15) is threadedly connected to the longitudinal threaded protrusion (1301); and a longitudinal guide groove (203) slidably engaged with the longitudinal protrusion column (15) is provided on the panel (2).

5. The automotive rubber parts tensile testing process according to claim 1, characterized in that: The side of the clamping plate (3) away from the telescopic column (302) is a rough surface with high friction resistance.

6. The automotive rubber parts tensile testing process according to claim 1, characterized in that: A guardrail is fixedly mounted on the panel (2), and a plurality of observation ports are provided on the guardrail.

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