阅读说明：本技术 座椅垫切割强度测试装置 (Seat cushion cutting strength testing device ) 是由 靳敏 吴小邦 王毅 秦政 杨振业 侯军府 于 2021-09-10 设计创作，主要内容包括：本发明涉及一种座椅垫切割强度测试装置,包括：座椅垫定位单元和切割测试组件。座椅垫定位单元包括用于承托座椅垫的主托板和适于从座椅垫一对相对的侧端面来夹紧座椅垫的夹板组件；切割测试组件包括切割刀片、切割刀片旋切驱动组件和切割刀片平移驱动组件；其中切割刀片旋切驱动组件包括用于装载切割刀片的摆动板,以及适于驱动摆动板做旋转运动的旋切动力结构；切割刀片平移驱动组件包括用于装载旋切动力结构和摆动板的移动主板,以及与移动主板相连的以适于驱动移动主板做平移运动的平移动力结构。本发明可以提高座椅的切割强度测试过程中的精确度。(The invention relates to a seat cushion cutting strength testing device, comprising: a seat cushion positioning unit and a cutting test assembly. The seat cushion positioning unit comprises a main supporting plate for supporting the seat cushion and a clamping plate component which is suitable for clamping the seat cushion from a pair of opposite side end surfaces of the seat cushion; the cutting test assembly comprises a cutting blade, a rotary cutting driving assembly of the cutting blade and a translation driving assembly of the cutting blade; the rotary cutting driving assembly of the cutting blade comprises a swinging plate used for loading the cutting blade and a rotary cutting power structure suitable for driving the swinging plate to rotate; the cutting blade translation driving assembly comprises a moving main plate and a translation power structure, wherein the moving main plate is used for loading the rotary-cut power structure and the swinging plate, and the translation power structure is connected with the moving main plate and is suitable for driving the moving main plate to do translation motion. The invention can improve the accuracy of the seat in the cutting strength test process.)

1. A seat cushion cutting strength testing device, characterized by comprising:

a seat cushion positioning unit including a main plate for supporting the seat cushion and a clamp assembly adapted to clamp the seat cushion from a pair of opposite side end surfaces of the seat cushion;

a cutting test assembly comprising a cutting blade, a rotary cutting drive assembly for the cutting blade, and a translational drive assembly for the cutting blade; the rotary cutting driving assembly of the cutting blade comprises a swinging plate used for loading the cutting blade and a rotary cutting power structure suitable for driving the swinging plate to rotate; the cutting blade translation driving assembly comprises a moving main plate and a translation power structure, wherein the moving main plate is used for loading the rotary cutting power structure and the swinging plate, and the translation power structure is connected with the moving main plate and is suitable for driving the moving main plate to do translation motion.

2. The seat cushion cut strength testing apparatus of claim 1, wherein the clamp assembly comprises a pressing plate adapted to press a side end surface of the seat cushion, and a driving assembly connected to the pressing plate for moving the pressing plate toward and away from the seat cushion;

the driving assembly comprises a support frame fixedly connected with the main supporting plate and at least one locking screw rod arranged between the support frame and the pressing plate.

3. The seat cushion cutting strength testing apparatus of claim 1, further comprising a cutting groove defining component; and

the cutting groove limiting assembly comprises a tensioning flat belt suitable for being attached to the upper surface of the seat cushion, and a balancing weight arranged at one end of the tensioning flat belt in the width direction; the other end of the tension flat belt in the width direction is matched and fixed with the main supporting plate through a joint; wherein

And a strip-shaped hollow cutting groove is prefabricated on the tensioning flat belt.

4. The seat cushion cutting strength testing apparatus according to claim 1, wherein the cutting blade is fixedly connected to the swinging plate through a blade seat; and

and one end of the swinging plate, which is far away from the cutting blade, is rotationally connected with the movable main plate.

5. The seat cushion cutting strength testing device according to claim 4, wherein the rotary cutting power structure adopts an electric push rod;

the force application end of the electric push rod is hinged with the part of the swinging plate close to the cutting blade.

6. The seat cushion cutting strength testing apparatus according to claim 5, wherein a first pressure sensor is further fixed to the moving main plate; and

the fixed end of the electric push rod is fixed on the first pressure sensor through the yoke plate;

the electric push rod is hinged with the connecting plate.

7. The seat cushion cutting strength testing device according to claim 1, wherein the translational power structure comprises a transmission block connected with the movable main plate, a nut fixedly connected with the transmission block, and a screw rod in transmission fit with the nut; wherein

The screw rod is also connected with a servo speed reducer suitable for driving the screw rod to operate.

8. The seat cushion cut strength testing apparatus of claim 7, wherein the translational power structure

The guide rail is in sliding fit with the transmission block and is positioned on two sides of the screw rod;

the movable main board is in sliding fit with the pair of guide rails through a sliding block.

9. The seat cushion cutting strength testing device according to any one of claims 7 or 8, wherein a second pressure sensor is further arranged between the moving main plate and the transmission block;

the second pressure sensor is connected with the movable mainboard in a matching mode through the first connecting block; and the second pressure sensor is connected with the transmission block in a matching way through a second connecting block.

10. The seat cushion cutting strength testing apparatus of claim 1, further comprising a seat cushion lifting unit;

the seat cushion lifting unit comprises a support seat below the main supporting plate and a lifter connected with the support seat.

Technical Field

The invention relates to the technical field of mechanical automation, in particular to a seat cushion cutting strength testing device.

Background

The seat on the high-speed rail is designed according to the principle of ergonomics, and can be integrally rotated by 180 degrees, so that passengers always face the advancing direction of the train. The strength and durability of the seat need to meet the requirements of the standard (TB/T3263-.

The investigation shows that the current cutting strength test has no specific operation standard and is verified by adopting a mode of manually holding a cutter to cut the seat. Manual operation can cause uncontrollable cutting force, cutting speed and cutting depth, and the provided data is also inaccurate. Therefore, the current test for cutting strength is not accurate.

Disclosure of Invention

The invention aims to provide a seat cushion cutting strength testing device, which aims to solve the technical problem of improving the precision in the seat cutting strength testing process.

The seat cushion cutting strength testing device is realized by the following steps:

a seat cushion cutting strength testing apparatus, comprising:

a seat cushion positioning unit including a main plate for supporting the seat cushion and a clamp assembly adapted to clamp the seat cushion from a pair of opposite side end surfaces of the seat cushion;

a cutting test assembly comprising a cutting blade, a rotary cutting drive assembly for the cutting blade, and a translational drive assembly for the cutting blade; the rotary cutting driving assembly of the cutting blade comprises a swinging plate used for loading the cutting blade and a rotary cutting power structure suitable for driving the swinging plate to rotate; the cutting blade translation driving assembly comprises a moving main plate and a translation power structure, wherein the moving main plate is used for loading the rotary cutting power structure and the swinging plate, and the translation power structure is connected with the moving main plate and is suitable for driving the moving main plate to do translation motion.

In an alternative embodiment of the invention, the cleat assembly includes a pressure plate adapted to press against a side end surface of the seat cushion, and a drive assembly coupled to the pressure plate for movement with the drive pressure plate toward and away from the seat cushion;

the driving assembly comprises a support frame fixedly connected with the main supporting plate and at least one locking screw rod arranged between the support frame and the pressing plate.

In an alternative embodiment of the invention, the seat cushion cutting strength testing device further comprises a cutting groove limiting component; and

the cutting groove limiting assembly comprises a tensioning flat belt suitable for being attached to the upper surface of the seat cushion, and a balancing weight arranged at one end of the tensioning flat belt in the width direction; the other end of the tension flat belt in the width direction is matched and fixed with the main supporting plate through a joint; wherein

And a strip-shaped hollow cutting groove is prefabricated on the tensioning flat belt.

In an alternative embodiment of the invention, the cutting blade is fixedly connected with the swing plate through a blade seat; and

and one end of the swinging plate, which is far away from the cutting blade, is rotationally connected with the movable main plate.

In an optional embodiment of the invention, the rotary cutting power structure adopts an electric push rod;

the force application end of the electric push rod is hinged with the part of the swinging plate close to the cutting blade.

In an alternative embodiment of the present invention, a first pressure sensor is further fixed on the movable main plate; and

the fixed end of the electric push rod is fixed on the first pressure sensor through the yoke plate;

the electric push rod is hinged with the connecting plate.

In an optional embodiment of the invention, the translational power structure comprises a transmission block connected with the movable main plate, a nut fixedly connected with the transmission block, and a screw rod in transmission fit with the nut; wherein

The screw rod is also connected with a servo speed reducer suitable for driving the screw rod to operate.

In an alternative embodiment of the invention, the translational power structure

The guide rail is in sliding fit with the transmission block and is positioned on two sides of the screw rod;

the movable main board is in sliding fit with the pair of guide rails through a sliding block.

In an optional embodiment of the present invention, a second pressure sensor is further disposed between the movable main plate and the transmission block;

the second pressure sensor is connected with the movable mainboard in a matching mode through the first connecting block; and the second pressure sensor is connected with the transmission block in a matching way through a second connecting block.

In an alternative embodiment of the present invention, the seat cushion cutting strength testing apparatus further comprises a seat cushion lifting unit;

the seat cushion lifting unit comprises a support seat below the main supporting plate and a lifter connected with the support seat.

Compared with the prior art, the embodiment of the invention has the following beneficial effects: according to the seat cushion cutting strength testing device, the seat cushion positioning unit and the cutting testing assembly are used in a matched mode, the seat cushion is fixed through the seat cushion positioning unit, and then the cutting testing assembly is used for testing the cutting strength of the seat cushion. The cutting test assembly comprises a cutting blade, a cutting blade rotary cutting driving assembly and a cutting blade translation driving assembly, wherein the cutting blade rotary cutting driving assembly is suitable for driving the cutting blade to carry out rotary cutting on the cutting blade seat, and the cutting blade translation driving assembly drives the cutting blade to do translation motion, so that the cutting blade has the advantages of stable cutting speed and high cutting precision compared with the manual cutting process in the seat cushion cutting process, and under the structure, the accuracy of the whole seat cushion cutting strength test is improved through improving the stability and precision in the cutting process.

In addition, through the cooperation of the first pressure sensor and the second pressure sensor, and the cooperation in the cutting process, the maximum cutting force can be controlled conveniently in the cutting process of the cutting blade for the purpose, so that the standard requirement can be met.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a first perspective view schematically illustrating a seat cushion cutting strength testing apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic diagram illustrating a second perspective view of a seat cushion cutting strength testing apparatus according to an embodiment of the present invention;

FIG. 3 is a third structural view of a seat cushion cutting strength testing apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating a first perspective structure of a cutting test assembly according to an embodiment of the present invention;

FIG. 5 shows an enlarged view of section A of FIG. 4;

FIG. 6 illustrates a first partial schematic view of a cutting test assembly provided by an embodiment of the present invention;

fig. 7 shows a partial schematic view two of a cutting test assembly according to an embodiment of the present invention.

In the figure: the device comprises a main supporting plate 101, a pressing plate 102, a locking screw 103, a supporting frame 104, a guide rod 105, a supporting seat 106, a lifter 107, a vertical column 108, a top rod 109, a sliding rail structure 110, a tensioning flat belt 111, a hollow cutting groove 112, a connecting block 113, a joint 115, a balancing weight 116, a seat cushion 200, a cutting blade 1, a swinging plate 2, a blade seat 3, a knife groove 31, a connecting pin 4, a movable main plate 5, an electric push rod 6, a first pressure sensor 7, a connecting plate 8, a transmission block 9, a nut 10, a screw rod 11, a servo reducer 12, a guide rail 13, a first connecting block 14, a second pressure sensor 15, a second connecting block 16, a fixed seat 18 and a sliding block 20.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

Referring to fig. 1 to 7, the present embodiment provides a seat cushion cutting strength testing apparatus, including: the seat cushion 200 positions the unit and the cutting test assembly. The seat cushion 200 is used for supporting and positioning the seat cushion 200 for cutting strength test; the cutting test assembly is used to perform a cutting strength test on the supported and positioned seat cushion 200. Wherein the cutting test assembly comprises: a cutting blade 1 for cutting the seat pad 200; the cutting blade rotary cutting driving component is used for driving the cutting blade 1 to do rotary cutting motion in the process of cutting the seat cushion; and a cutting blade translation drive assembly for driving the cutting blade 1 to make a translation movement in the process of cutting the seat cushion.

Referring next to the drawings in detail, first, a seat cushion 200 positioning unit: which includes a main platform 101 for supporting the seat pan 200 and a cleat assembly adapted to clamp the seat pan 200 from a pair of opposed lateral end faces of the seat pan 200. A pair of cleat assemblies herein may effect clamping and unclamping of the seat cushion 200 by translation relative to the seat cushion 200.

In connection with the structure of the cleat assembly, which is exemplified as an easy-to-operate cleat assembly, the cleat assembly includes a pressure plate 102 adapted to press against a side end surface of the seat cushion 200, and a driving assembly connected to the pressure plate 102 so as to move the pressure plate 102 toward and away from the seat cushion 200; the driving assembly here comprises a supporting frame 104 fixedly connected to the main supporting plate 101 and a locking screw 103 arranged between the supporting frame 104 and the pressing plate 102. By rotating the locking screw 103, the distance between the pressing plate 102 and the supporting frame 104 can be adjusted, so that the clamping and releasing effects of the pair of pressing plates 102 on the seat cushion 200 can be realized.

In addition to the above structure, in order to ensure the clamping effect of the pair of pressing plates 102 on the seat cushion 200, a pair of guide rods 105 is further provided between the pressing plates 102 and the supporting frame 104 in the present embodiment, the pair of guide rods 105 is located at both sides of the locking screw 103, and the pair of guide rods 105 is preferably symmetrically provided. One end of the guide rod 105 is fixedly connected with the end surface of the pressure plate 102 facing the support frame 104, and the other end of the guide rod 105 penetrates through the support frame 104 and forms a sliding fit with the support frame 104.

On the basis of the above structure, in view of the convenience of taking and placing the seat cushion 200, the seat cushion cutting strength testing apparatus of the present embodiment further includes a seat cushion 200 lifting unit; the concrete seat cushion 200 elevating unit includes a support base 106 under the main bracket 101 and an elevator 107 connected to the support base 106. It should be noted that the elevator 107 herein may be implemented by any elevator 107 that is well known in the art, and the elevator 107 may be automatic or manual, which is not limited to this embodiment. That is, the elevating movement of the seat cushion 200 is achieved by the elevator 107.

It should be noted that, in consideration of the accuracy of the track of the seat cushion 200 during the lifting movement, the seat cushion 200 is prevented from deviating during the lifting movement, and the stability of the overall position of the seat cushion 200 during the cutting strength test is improved, the seat cushion cutting strength test apparatus of the present embodiment further includes a gantry for supporting the support seat 106, and the support seat 106 is matched with the pair of columns 108 of the gantry through the slide rail structure 110, so that the support seat 106 can slide along the pair of columns 108 of the gantry.

Further, in view of the definition of the cutting trace during the cutting strength test for the seat pad 200, the seat pad cutting strength test apparatus of the present embodiment further includes a cutting groove defining component; and the cutting groove defining assembly comprises a tension flat belt 111 adapted to be attached to the upper surface of the seat cushion 200, and a weight block 116 provided at one end of the tension flat belt 111 in the width direction; the other end of the tension flat belt 111 in the width direction is fixed to the main pallet 101 by a joint 115. The weight 116 is optionally coupled with the tension flat belt 111 via a connecting block 113. Wherein a strip-shaped hollow cutting groove 112 is prefabricated on the tensioning flat belt 111, and the cutting blade 1 is suitable for cutting the seat cushion 200 in the hollow cutting groove 112.

Next, and again, the cutting test assembly in this embodiment is mounted on a top bar 109 of the gantry, the top bar 109 being transversely disposed between a pair of columns 108.

The rotary cutting driving assembly of the cutting blade of the present embodiment includes a swing plate 2 for loading the cutting blade 1, and a rotary cutting power structure adapted to drive the swing plate 2 to rotate; that is, the present embodiment drives the cutting blade 1 to perform the rotary cutting motion by the rotation motion of the swing plate 2.

Further, the cutting blade 1 is fixedly connected with the swing plate 2 through the blade seat 3; a pocket 31 adapted for insertion of the cutting blade 1 is provided in the blade holder 3, and after the cutting blade 1 is inserted into the pocket 31, the cutting blade 1 is fastened to the blade holder 3 by a screw. Such an assembly structure facilitates timely replacement of the cutting blade 1 in the event of wear of the cutting blade 1.

The rotary motion for the oscillating plate 2 is realized by the following structure:

the end of the oscillating plate 2 remote from the cutting blade 1 is pivotally connected to the main moving plate 5 by a connecting pin 4, i.e., the oscillating plate 2 is pivotally moved about the connecting pin 4. While the rotary movement for the oscillating plate 2 is realized by means of, for example and without limitation, an electric push rod 6.

The present embodiment takes the rotating structure of the electric push rod 6 driving the swing plate 2 as an example with reference to the accompanying drawings: the force application end of the electric push rod 6 is hinged with the part of the swing plate 2 close to the cutting blade 1. With this structure, the force applying end acts on the swing plate 2 by the electric push rod 6 to rotate the swing plate 2 about the connecting pin 4.

In addition, a first pressure sensor 7 is fixed on the movable main plate 5; the first pressure sensor 7 is fixedly assembled on the movable main board 5 through a fixed seat 18; the fixed end of the electric push rod 6 is fixedly connected with the first pressure sensor 7 through a connecting plate 8, and the electric push rod 6 is hinged with the connecting plate 8.

Furthermore, the cutting blade translation driving assembly of the present embodiment includes a moving main plate 5 for loading the rotary cutting power structure and the swing plate 2, and a translation power structure connected to the moving main plate 5 and adapted to drive the moving main plate 5 to perform a translation motion. That is, the moving main board 5 drives the swing board 2 and the rotary cutting power structure to perform synchronous translational motion in the process of performing translational motion.

Referring to the drawings for illustrating an alternative implementation, the translational power structure comprises a transmission block 9 connected with the moving main plate 5, a nut 10 fixedly connected with the transmission block 9, and a screw rod 11 in transmission fit with the nut 10; wherein the screw rod 11 is also connected with a servo reducer 12 which is suitable for driving the screw rod 11 to run. In the process that the servo speed reducer 12 drives the screw rod 11 to rotate, the screw rod 11 rotates, the nut 10 moves along the axial direction of the screw rod 11, and in the process that the nut 10 moves axially, the nut 10 drives the transmission block 9 to move synchronously. And because the transmission block 9 is connected with the movable main plate 5, in the process that the transmission block 9 makes translational motion along the axial direction of the screw rod 11, the transmission block 9 drives the movable main plate 5 to make synchronous translational motion, thereby realizing that the swinging plate 2 and the corresponding rotary cutting power structure generate translational motion along the axial direction of the screw rod 11.

On the basis of the structure, the limit of the track of the transmission block 9 and the moving main plate 5 in the translation process is considered, so that the transmission block 9 and the moving main plate 5 are prevented from deviating in the translation process. The translation power structure adopted by the embodiment further comprises a pair of guide rails 13 which are in sliding fit with the transmission block 9 and are positioned on two sides of the screw rod 11; the moving main plate 5 is slidably engaged with the pair of guide rails 13 via slide blocks 20. Therefore, the transmission block 9 and the moving main plate 5 are in sliding fit with the guide rail 13 during the translation process, so that the guide rail 13 defines the translation track of the transmission block 9 and the moving main plate 5.

In addition, a second pressure sensor 15 is also arranged between the movable main board 5 and the transmission block 9; the second pressure sensor 15 is connected with the movable main board 5 in a matching way through the first connecting block 14; and the second pressure sensor 15 is connected with the transmission block 9 in a matching way through a second connecting block 16.

In summary, the specific implementation principle of the seat cushion cutting strength testing device of the embodiment is as follows:

the seat cushion 200 is placed on the main supporting plate 101, the seat cushion 200 is clamped and fixed on the main supporting plate 101 through a pair of clamping plate assemblies, and after the seat cushion 200 is clamped and fixed, the seat cushion 200 is lifted to a test position to be cut under the action of the supporting seat 106 and the lifter 107.

After the seat cushion 200 is positioned, the servo reducer 12 is started, the transmission block 9 is driven to translate through the lead screw 11, the transmission block 9 pushes the movable main plate 5 to a cutting position of the seat cushion 200 through the first connecting block 14, the second connecting block 16 and the second pressure sensor 15 and stops (moves rightwards in the drawing of the embodiment), the electric push rod 6 is powered at the moment, the force application end of the electric push rod 6 acts on the swinging plate 2, and the swinging plate 2 swings around the connecting pin 4 to enable the cutting blade 1 to perform rotary cutting movement to cut into the seat cushion 200; then the cutting head starts to cut rightwards again, and stops after reaching the preset stroke, and meanwhile, the electric push rod 6 retracts to lift the cutter and returns to the original position to prepare for next cutting.

In the above process, the force of the cutting blade 1 cutting into the seat cushion 200 is transmitted to the first pressure sensor 7 by the cutting blade 1 through the swinging block and the electric push rod 6 so as to control the maximum cutting force, that is, the first pressure sensor 7 can display the cutting force in real time during the cutting process of the cutting blade 1 cutting the seat cushion 200; and the force of the cutting blade 1 when cutting to the right with the moving main plate 5 is borne by the second pressure sensor 15 so as to control the maximum cutting force to meet the standard requirement, i.e. the second pressure sensor 15 can display the cutting force in real time during the cutting of the seat cushion 200 by the cutting blade 1.

In the description of the present invention, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the present invention, unless otherwise expressly stated or limited, the first feature may be present on or under the second feature in direct contact with the first and second feature, or may be present in the first and second feature not in direct contact but in contact with another feature between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.