Pre-press-fitting mechanism

Abstract

The invention belongs to the technical field of windscreen wiper production, and discloses a pre-press-fitting mechanism which comprises a supporting device, a pressurization guiding device, a pressure monitoring device and a bearing device. The pressurizing and bearing device is oppositely arranged on the supporting device to form a specified interval, a to-be-tested workpiece is placed on the bearing device, the pressurizing guide device applies acting force to the to-be-tested workpiece, and the pressure monitoring device obtains the acting force and collects the workpiece connection state under preset pressure at the end, close to the to-be-tested workpiece, of the pressurizing guide device. The connection strength of the shaft and the loop bar is detected by applying a vertical force to the shaft of the to-be-tested workpiece through the pressurization guide device, a high-precision drawing clamp and a complex driving transmission system are not needed, the equipment structure is simplified, the manufacturing cost is reduced, the pressurization guide device automatically applies a force after the to-be-tested workpiece is placed during operation, an operator can easily operate, and human errors are reduced. And thus, the convenience and reliability of operation as well as the accuracy and efficiency of detection are improved.

Description

Technical Field

[0001] The invention relates to the technical field of windshield wiper production, and in particular to a pre-pressing mechanism. Background Art

[0002] In the field of automotive parts inspection, the wiper is a key component to ensure clear driving vision, and the connection strength between the wiper shaft and the sleeve rod is crucial. The existing method for testing the connection strength of the wiper shaft and the sleeve rod is to clamp the shaft and the sleeve rod separately through a specially designed fixture for pull-out force test. In this process, the pulling force needs to be precisely controlled and applied gradually to observe the connection strength of the shaft and the sleeve rod. However, this pull-out force test method has many disadvantages.

[0003] On the one hand, the required equipment has high requirements. It is not easy to manufacture a clamp that can accurately adapt to wiper shafts and sleeve rods of different specifications. It must not only ensure that the shaft and sleeve rod are stably clamped during the stretching process, but also ensure that the tension is evenly distributed, which greatly increases the design, manufacturing and debugging costs of the equipment; on the other hand, the operation process is relatively complicated, and operators need to undergo professional training to accurately install the shaft and sleeve rod on the clamp and continuously monitor various parameters during the tensile test. Any carelessness may lead to inaccurate test results or damage the test sample, which seriously restricts the efficiency and accuracy of the wiper shaft and sleeve rod connection firmness detection. Summary of the invention

[0004] The main purpose of the present invention is to provide a pre-pressing mechanism, which aims to solve the technical problems that the existing method for detecting the connection strength of the wiper shaft and the sleeve rod is to clamp the shaft and the sleeve rod separately by a clamp to perform a pull-out force test, which requires high equipment requirements and a relatively complicated operation process, resulting in high equipment manufacturing costs and low detection accuracy and efficiency.

[0005] In order to achieve the above-mentioned purpose of the invention, the present invention provides a pre-pressing mechanism, including a supporting device, a pressurizing guide device, a pressure monitoring device and a bearing device;

[0006] The boosting guide device and the carrying device are arranged on the supporting device in a relative manner, and a specified interval is formed between the boosting guide device and the carrying device, the carrying device is used to place the workpiece to be tested, and the boosting guide device is used to move within the specified interval and apply a force to the workpiece to be tested;

[0007] The pressure monitoring device is arranged at one end of the boosting guide device close to the workpiece to be tested, and is used to obtain the force applied by the boosting guide device and collect the connection status of the workpiece to be tested under a preset pressure.

[0008] Furthermore, the supporting device includes a first supporting plate, and the boosting guide device includes a boosting mechanism and a guide mechanism. The boosting mechanism and the guide mechanism are arranged on the first supporting plate, and the boosting mechanism is connected to the guide mechanism through a first connecting plate, so that the boosting mechanism and the guide mechanism move synchronously.

[0009] Furthermore, the boosting mechanism includes a boosting cylinder and a first connecting block, the boosting cylinder is arranged on the first support plate, and the output shaft of the boosting cylinder passes through the first support plate, one end of the first connecting block is threadedly connected to the output shaft, and the other end is detachably arranged on the first connecting plate.

[0010] Furthermore, the guide mechanism includes a sleeve, a guide rod and a limit plate, the sleeve is arranged through the first support plate, the guide rod is slidably connected in the sleeve, and one end of the guide rod is fixedly connected to the first connecting plate, and the limit plate is arranged on the other end of the guide rod away from the first connecting plate.

[0011] Furthermore, the pressure monitoring device comprises a pressure monitoring body and a pressure block, wherein the pressure monitoring body is arranged at an end of the first connecting plate away from the boosting mechanism, and the pressure block is detachably arranged at an end of the pressure monitoring body away from the first connecting plate.

[0012] Furthermore, the supporting device also includes a second supporting plate, a bottom plate, and a front end plate, a rear end plate and at least two side plates arranged on the bottom plate, the front end plate and the rear end plate are arranged at the two ends of the side plate opposite to each other, and the rear end plate is connected to the side plate, the front end plate and the side plate are arranged at intervals, and a supporting platform recessed toward the rear end plate is arranged on the side of the side plate close to the front end plate, the second supporting plate is detachably arranged on the supporting platform, the front end plate and the second supporting plate form a specified spacing, and the top ends of the front end plate and the second supporting plate are located in the same plane, so that the bearing device is arranged on the front end plate and the second supporting plate.

[0013] Furthermore, a plurality of limiting grooves are arranged on the bottom plate, the front end plate, the rear end plate and the side plate are respectively located in the limiting grooves and connected to the bottom plate, the limiting grooves extend along the entire circumference of the bottom plate, and a plurality of the limiting grooves form openings at the intersections.

[0014] Further, the supporting device includes a supporting column and a supporting plate, the supporting column is detachably connected to the second supporting plate and the front end plate, the supporting plate is arranged on the supporting column, the supporting column is used to place the axis of the workpiece to be tested, the supporting plate is used to place the sleeve rod of the workpiece to be tested, and the axis of the workpiece to be tested passes through the supporting column.

[0015] Further, the front end plate includes an end plate body and a sliding portion, the sliding portion is an arc-shaped protrusion, the end plate body is arranged on the base plate, the sliding portion is arranged at an end of the end plate body away from the base plate, and the sliding portion is located on a side of the end plate body close to the second support plate, and an arc-shaped groove corresponding to the arc-shaped protrusion is formed at one end of the second support plate close to the sliding portion, so that the specified spacing is arc-shaped.

[0016] Furthermore, the pre-pressing mechanism also includes a displacement monitoring device, which is arranged on the second support plate and located at the center of the second support plate, and is used to monitor the movement trajectory of the support column.

[0017] Beneficial effects:

[0018] A pre-pressing mechanism of the present invention comprises a supporting device, a pressurizing guide device, a pressure monitoring device and a carrying device; the pressurizing guide device and the carrying device are relatively arranged on the supporting device, and a specified interval is formed between the pressurizing guide device and the carrying device, the carrying device is used to place a workpiece to be tested, and the pressurizing guide device is used to move within the specified interval and apply a force to the workpiece to be tested; the pressure monitoring device is arranged at one end of the pressurizing guide device close to the workpiece to be tested, and the pressure monitoring device is used to obtain the force applied by the pressurizing guide device, and collect the connection status of the workpiece to be tested under a preset pressure. Therefore, the booster guide device is used to directly apply a vertical force to the axis of the workpiece to be tested, thereby detecting the connection strength between the axis and the sleeve rod of the workpiece to be tested, so that there is no need for a high-precision drawing fixture, nor is there a need for a complex drive and transmission system specifically used to generate precise drawing force and control its uniform application, thereby reducing the number and complexity of parts of the equipment, greatly simplifying the overall structure of the equipment, and reducing the difficulty and cost of equipment manufacturing. At the same time, in the pre-pressing mechanism, it is only necessary to place the workpiece to be tested on the carrying device, and the booster guide device can automatically apply a vertical force to the axis. The operator can get started without complex operation training, which improves the convenience and efficiency of operation, reduces the manual operation links, and reduces the possibility of inaccurate detection results due to human errors, thereby improving the reliability, accuracy and efficiency of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall schematic diagram of a pre-pressing mechanism according to an embodiment of the present invention;

[0020] Figure 2 For an embodiment of the present invention Figure 1 A local enlarged view of point A;

[0021] Figure 3 A schematic diagram of a bottom plate and a front end plate according to an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of a boost guide device according to an embodiment of the present invention;

[0023] Figure 5 It is a schematic diagram of a carrying device and a workpiece to be tested according to an embodiment of the present invention.

[0024] in:

[0025] 2. Pressurization guide device; 3. Pressure monitoring device; 4. Carrying device; 5. Workpiece to be tested; 6. Displacement monitoring device;

[0026] 10. First support plate; 11. Second support plate; 12. Bottom plate; 13. Front end plate; 14. Rear end plate; 15. Side plate; 16. Support platform; 17. Limiting groove;

[0027] 130. end plate body; 131. sliding portion;

[0028] 20. Pressurizing mechanism; 21. Guide mechanism; 22. First connecting plate;

[0029] 201, boost cylinder; 202, first connecting block;

[0030] 210, sleeve; 211, guide rod; 212, limit plate;

[0031] 30. Pressure monitoring body; 31. Pressure block;

[0032] 40. Support column; 41. Load-bearing plate.

[0033] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] Reference Figure 1-Figure 5 , this embodiment provides a pre-pressing mechanism, including a supporting device, a pressurizing guide device 2, a pressure monitoring device 3 and a bearing device 4;

[0039] The boosting guide device 2 and the carrying device 4 are arranged on the supporting device in a relative manner, and a specified interval is formed between the boosting guide device 2 and the carrying device 4. The carrying device 4 is used to place the workpiece 5 to be tested, and the boosting guide device 2 is used to move within the specified interval and apply a force to the workpiece 5 to be tested;

[0040] The pressure monitoring device 3 is arranged at one end of the boosting guide device 2 close to the workpiece 5 to be tested, and the pressure monitoring device 3 is used to obtain the force applied by the boosting guide device 2 and collect the connection status of the workpiece 5 to be tested under a preset pressure.

[0041] In the above embodiment, the pre-pressing mechanism is used to detect the connection strength of the shaft and the sleeve rod of the workpiece 5 to be tested, and includes a supporting device, a boosting guide device 2, a pressure monitoring device 3 and a bearing device 4, wherein the workpiece 5 to be tested is the connection structure of the shaft and the sleeve rod of the wiper, which is the object of detection, and is placed on the bearing device 4. The shaft and the sleeve rod are subjected to the force during the detection process to determine the connection strength; the supporting device serves as the basic frame of the entire pre-pressing mechanism, and it provides a stable installation and bearing foundation for the boosting guide device 2, the pressure monitoring device 3 and the bearing device 4, ensuring that the relative positions of the components are kept stable during the detection process, and ensuring that the detection is carried out accurately; the boosting guide device 2 and the bearing device 4 are arranged relative to each other, and the boosting guide device 2 and the bearing device 4 are arranged relative to each other. A specified interval is formed between the carrying devices 4, so that the boosting guide device 2 can move toward the carrying device 4 within the specified interval, thereby applying a force to the workpiece 5 to be tested placed on the carrying device 4, and their relative arrangement is in the up and down direction. This layout meets the detection requirements and is convenient for the boosting guide device 2 to apply a vertical force to the workpiece; the pressure monitoring device 3 is located at one end of the boosting guide device 2 close to the workpiece 5 to be tested, and is closely connected to the boosting guide device 2. It can accurately obtain the magnitude of the force applied by the boosting guide device 2 to the workpiece 5 to be tested, and collect the connection status information of the workpiece at different pressure stages, so as to provide key data support for judging the connection strength of the shaft and the sleeve rod, and realize accurate detection of the connection strength of the workpiece 5 to be tested.

[0042] During operation, first place the axis and sleeve rod of the workpiece 5 to be tested correctly on the carrying device 4, then start the boost guide device 2 to make it move toward the workpiece on the carrying device 4, drive the pressure monitoring device 3 to press the workpiece, and then start the boost guide device 2 to apply force to the workpiece, and obtain the magnitude of the force applied by the boost guide device 2 in real time through the pressure monitoring device 3, detect the connection status of the workpiece 5 to be tested, and judge the connection strength of the axis and sleeve rod of the workpiece 5 to be tested. In addition, the boost guide device 2 starts to maintain the pressure when the pressure reaches a preset pressure, and collects the connection status of the workpiece 5 to be tested under the preset pressure through the pressure monitoring device 3, and judges the connection strength of the axis and sleeve rod of the workpiece 5 to be tested. If the axis and sleeve rod of the test workpiece do not fall off under the preset pressure, the workpiece 5 to be tested meets the requirements. If further testing of the maximum bearing capacity is required, the boost guide device 2 can be started again to increase the force until the test is completed. Therefore, the booster guide device 2 is used to directly apply a vertical force to the axis of the workpiece 5 to be tested, and then the connection strength between the axis and the sleeve rod of the workpiece 5 to be tested is detected, so that there is no need for a high-precision drawing fixture, nor is there a need for a complex drive and transmission system specifically used to generate precise drawing force and control its uniform application, thereby reducing the number and complexity of parts of the equipment, greatly simplifying the overall structure of the equipment, and reducing the difficulty and cost of equipment manufacturing. At the same time, in this pre-pressing mechanism, it is only necessary to place the workpiece 5 to be tested on the supporting device 4, and the booster guide device 2 can automatically apply a vertical force to the axis. The operator can get started without complex operation training, which improves the convenience and efficiency of operation, reduces the manual operation links, and reduces the possibility of inaccurate detection results due to human errors, thereby improving the reliability, accuracy and efficiency of detection.

[0043] Reference Figure 1-Figure 4 In one embodiment, the supporting device includes a first supporting plate 10, and the boosting guide device 2 includes a boosting mechanism 20 and a guide mechanism 21. The boosting mechanism 20 and the guide mechanism 21 are arranged on the first supporting plate 10, and the boosting mechanism 20 is connected to the guide mechanism 21 through a first connecting plate 22, so that the boosting mechanism 20 and the guide mechanism 21 move synchronously.

[0044] In the above embodiment, the support device includes a first support plate 10, which is an important component of the support device and provides an installation base for the boost guide device 2. The first support plate 10 has a certain strength and stability to ensure that the entire boost guide device 2 can remain stable during operation; the boost guide device 2 includes a boost mechanism 20 and a guide mechanism 21. The boost mechanism 20 is mainly responsible for generating and providing a force and is a key part of the driving detection process. The guide mechanism 21 guides the movement direction of the boost mechanism 20 to ensure the accuracy and stability of its movement and prevent the boost mechanism 20 from deflecting or shaking during operation; the first connecting plate 22 connects the boost mechanism 20 and the guide mechanism 21 so that the two can move synchronously. The first connecting plate 22 is located between the boost mechanism 20 and the guide mechanism The bottom of the boosting mechanism 20 and the bottom of the guide mechanism 21 are arranged in the same plane through the first connection, which ensures the effective transmission of force and the coordination of movement; the boosting mechanism 20 and the guide mechanism 21 are arranged along the length direction of the first support plate 10, so that their layout is consistent with the long side direction of the first support plate 10, and the two are in the same radial direction, that is, their centers are arranged in the diameter direction of the same circle, so that the entire boosting guide device 2 has a compact and reasonable structure. At the same time, a specified interval is formed between the boosting mechanism 20 and the guide mechanism 21, which provides necessary space for the movement of the two and avoids mutual interference. The first connecting plate 22 realizes the synchronous movement of the boosting mechanism 20 and the guide mechanism 21, which ensures the uniformity and stability of force application and improves the detection accuracy.

[0045] Reference Figure 1-Figure 4 In one embodiment, the boosting mechanism 20 includes a boosting cylinder 201 and a first connecting block 202, the boosting cylinder 201 is arranged on the first support plate 10, and the output shaft of the boosting cylinder 201 passes through the first support plate 10, one end of the first connecting block 202 is threadedly connected to the output shaft, and the other end is detachably arranged on the first connecting plate 22.

[0046] In the above embodiment, the boosting mechanism 20 includes a boosting cylinder 201 and a first connecting block 202. The boosting cylinder 201 serves as a power source for the boosting mechanism 20 and generates a driving force for linear motion through changes in internal air pressure. The boosting cylinder 201 is arranged on the first support plate 10 to provide power support for the entire boosting guide device 2 and is a key component for making the workpiece 5 to be tested withstand pressure. The first connecting block 202 serves to connect the output shaft of the boosting cylinder 201 with the first connecting plate 22. One end is connected to the output shaft of the boosting cylinder 201 by a threaded connection. The threaded connection is convenient for installation and disassembly, and can ensure the firmness of the connection and effectively transmit the force generated by the boosting cylinder 201. The other end is detachably arranged on the first connecting plate 22, so that the entire boosting mechanism 20 and the guide mechanism 21 are connected. The components form an organic whole to ensure a stable force transmission path; the output shaft of the boost cylinder 201 passes through the first support plate 10, so that the force generated by the boost cylinder 201 can be smoothly transmitted downward to drive the entire detection process. The boost cylinder 201 can achieve multiple required steps such as descent-boosting-airflow control-deceleration-buffering-stroke in place, etc. Compared with pure descent-formation in place, it has the ability to freely adjust different height differences. The first connecting block 202 is connected to the output shaft through a thread and is detachably connected to the first connecting plate 22, thereby constructing a force transmission link from the boost cylinder 201 to the first connecting plate 22, ensuring that the various components of the boost guide device 2 move in coordination during operation, so that pressure can be accurately applied to the workpiece 5 to be tested, thereby achieving effective detection of the workpiece connection strength.

[0047] Reference Figure 1-Figure 4 In one embodiment, the guide mechanism 21 includes a sleeve 210, a guide rod 211 and a limit plate 212. The sleeve 210 is arranged on the first support plate 10, the guide rod 211 is slidably connected in the sleeve 210, and one end of the guide rod 211 is fixedly connected to the first connecting plate 22, and the limit plate 212 is arranged at the other end of the guide rod 211 away from the first connecting plate 22.

[0048] In the above embodiment, the guide mechanism 21 includes a sleeve 210, a guide rod 211 and a limit plate 212. The sleeve 210 is arranged on the first support plate 10 to provide a sliding track for the guide rod 211, ensuring that the guide rod 211 can only move in a specific direction, and plays a role in positioning and restraining the movement of the entire guide mechanism 21; the guide rod 211 is slidably connected to the sleeve 210, and one end is fixed to the first connecting plate 22. Its sliding in the sleeve 210 realizes the smooth movement of the boost guide device 2 in the vertical direction; the limit plate 212 is located at the other end of the guide rod 211 away from the first connecting plate 22, and mainly plays a role in limiting the excessive sliding of the guide rod 211, preventing the guide rod 211 from detaching from the sleeve 21 during movement. 0; there are two sleeves 210 and two guide rods 211 respectively. When the first connecting plate 22 moves under the action of the boost mechanism 20, it can drive the guide rod 211 to slide synchronously in the sleeve 210. The two sleeves 210 and the centers of the first connecting block 202 are connected in the space of the first connecting plate 22 to form a triangle. This triangular structure greatly enhances the stability of the entire boost guide device 2. During operation, no matter how much force the boost mechanism 20 applies, the triangular structure can effectively disperse the stress and ensure the relative position stability of the components, so that the guide rod 211 always slides accurately along the sleeve 210, thereby ensuring that the pressure acts accurately on the workpiece 5 to be tested, and realizing accurate detection of the connection strength between the wiper shaft and the sleeve rod.

[0049] Reference Figure 1-Figure 4 In one embodiment, the pressure monitoring device 3 includes a pressure monitoring body 30 and a pressure block 31. The pressure monitoring body 30 is arranged at an end of the first connecting plate 22 away from the boosting mechanism 20, and the pressure block 31 is detachably arranged at an end of the pressure monitoring body 30 away from the first connecting plate 22.

[0050] In the above embodiment, the pressure monitoring device 3 includes a pressure monitoring body 30 and a pressure block 31. The pressure monitoring body 30 is the core component of the pressure monitoring device 3 and is used to sense and measure pressure. The pressure monitoring body 30 includes but is not limited to a strain gauge pressure sensor, a piezoelectric pressure sensor, a capacitive pressure sensor, and a piezoresistive pressure sensor. It is arranged at an end of the first connecting plate 22 away from the boosting mechanism 20. Through the connection with the first connecting plate 22, it moves synchronously with the movement of the boosting guide device 2 and is responsible for collecting pressure data and transmitting it to an external monitor; the pressure block 31 is detachably mounted on an end of the pressure monitoring body 30 close to the workpiece 5 to be tested, and its position is at the center of the pressure monitoring body 30, so that the pressure block 31, the pressure monitoring body 30, and the boosting mechanism 20 are The centers of the pressure cylinder 201 and the first connecting block 202 are on the same central axis, ensuring uniform force transmission. When the boost guide device 2 pushes the pressure monitoring body 30 to move downward, the pressure block 31 can vertically and accurately contact the axis of the workpiece 5 to be tested, and completely transmit the force generated by the boost mechanism 20 to the axis, thereby realizing the detection of the connection strength between the axis and the sleeve rod of the workpiece 5 to be tested; the detachable connection between the pressure block 31 and the pressure monitoring body 30 facilitates the replacement or maintenance of the pressure block 31 to adapt to workpieces 5 to be tested of different specifications. The pressure monitoring body 30 is connected to an external monitor to transmit the collected pressure data in real time, which is convenient for the operator to observe and analyze the pressure changes during the detection process in real time, and timely grasp the connection status of the workpiece 5 to be tested.

[0051] Reference Figure 1-Figure 4 In one embodiment, the supporting device further includes a second supporting plate 11, a bottom plate 12, and a front end plate 13, a rear end plate 14 and at least two side plates 15 arranged on the bottom plate 12, the front end plate 13 and the rear end plate 14 are arranged at both ends of the side plate 15 opposite to each other, and the rear end plate 14 is connected to the side plate 15, the front end plate 13 and the side plate 15 are arranged at intervals, and a supporting platform 16 recessed toward the rear end plate 14 is arranged on a side of the side plate 15 close to the front end plate 13, the second supporting plate 11 is detachably arranged on the supporting platform 16, the front end plate 13 and the second supporting plate 11 form a specified spacing, and the top ends of the front end plate 13 and the second supporting plate 11 are located in the same plane, so that the carrying device 4 is arranged on the front end plate 13 and the second supporting plate 11.

[0052] In the above embodiments, the support device further includes a second support plate 11, a bottom plate 12, a front end plate 13, a rear end plate 14, and at least two side plates 15. The bottom plate 12 serves as the basic component of the entire support device, providing an installation foundation for the front end plate 13, the rear end plate 14, and the side plates 15 to ensure the stability of the entire structure. The front end plate 13 and the rear end plate 14 are oppositely arranged at both ends of the side plates 15. The rear end plate 14 is fixedly connected to the side plates 15, and the front end plate 13 is spaced from the side plates 15 by a certain distance. The two together define the front and rear position ranges of the loading device 4. The height of the front end plate 13 is less than that of the side plates 15, and it cooperates with the second support plate 11 to form a specific spatial layout. There are at least two side plates 15, connecting the front end plate 13 and the rear end plate 14. On one side of the side plates 15, there is a recessed support platform 16. The recessed support platform 16 is preferably in a C shape, where one side close to the bottom plate 12 is shorter and the other side is longer. Preferably, the short side is half the length of the long side, providing an installation position for the second support plate 11 and at the same time playing a role in supporting and strengthening the entire structure. The second support plate 11 is used to place the loading device 4 and is detachably installed on the support platform 16 of the side plates 15. It and the front end plate 13 together provide a stable placement plane for the loading device 4, and are flush with the top of the front end plate 13 to ensure that the loading device 4 is placed stably, so that the workpiece 5 to be tested is in a suitable detection position. The second support plate 11 is placed on the short side. After being placed on the short side, the top ends of the front end plate 13 and the second support plate 11 are located on the same plane. The first support plate 10 is located at the top of the side plates 15 and is opposite to the bottom plate 12. Each component cooperates to construct a stable frame structure. When the axis of the workpiece 5 to be tested is relatively long, the specified distance between the front end plate 13 and the second support plate 11 and the space between the side plates 15 and the front end plate 13 can accommodate the axis, providing sufficient space for detection, enabling the loading device 4 to accurately place the workpiece 5 to be tested. The overall structure is easy to assemble and disassemble, facilitating equipment maintenance and repair, reducing maintenance costs, increasing the service life of the equipment, and helping to improve the overall performance and working efficiency of the pre-pressing mechanism.

[0053] Referring to Figure 1-Figure 4 , in one embodiment, a plurality of limiting grooves 17 are provided on the bottom plate 12. The front end plate 13, the rear end plate 14, and the side plates 15 are respectively located in the limiting grooves 17 and are connected to the bottom plate 12. The limiting grooves 17 extend along the entire circumferential direction of the bottom plate 12, and a plurality of the limiting grooves 17 form openings at the intersections.

[0054] In the above embodiment, the limiting groove 17 is arranged on the bottom plate 12, and extends along the entire circumference direction of the bottom plate 12 to form a continuous track-shaped groove structure. A plurality of limiting grooves 17 intersect with each other to form openings at the intersections, that is, openings connected to the outside are formed at both ends of the linear limiting grooves 17. The depth of the limiting grooves 17 is specific and is used to determine the installation height of the front end plate 13, the rear end plate 14 and the side plate 15 on the bottom plate 12, thereby ensuring the consistency and stability of the entire supporting structure; the front end plate 13, the rear end plate 14 and the side plate 15 are respectively installed on the bottom plate 12 by cooperating with the limiting grooves 17, and they slide into the limiting grooves 17 from the openings. Slide along the limit groove 17 to the specified position, so that the front end plate 13 and the rear end plate 14 are accurately located at the two ends of the side plate 15, the rear end plate 14 is tightly connected to the side plate 15, and the front end plate 13 and the side plate 15 are spaced apart to jointly construct a stable frame structure. This connection method not only ensures the accurate relative position of each component, but also facilitates the assembly and disassembly process. During installation, it is only necessary to align each component with the opening and put it into the limit groove 17, and then push it to the appropriate position. There is no need for complicated fixing operations, which improves the installation efficiency. At the same time, when a component needs to be repaired or replaced, it can be easily taken out from the opening, reducing the difficulty of maintenance.

[0055] Reference Figure 1-Figure 5 In one embodiment, the carrying device 4 includes a support column 40 and a carrying plate 41, the support column 40 is detachably connected to the second support plate 11 and the front end plate 13, the carrying plate 41 is arranged on the support column 40, the support column 40 is used to place the axis of the workpiece to be tested 5, the carrying plate 41 is used to place the sleeve rod of the workpiece to be tested 5, and the axis of the workpiece to be tested 5 passes through the support column 40.

[0056] In the above embodiment, the carrying device 4 includes a support column 40 and a carrying plate 41. One end of the support column 40 is detachably connected to the second support plate 11 and the front end plate 13, that is, half of one end of the support column 40 is connected to the second support plate 11, and the other half is connected to the front end plate 13. The support column 40 is used to place the axis of the workpiece 5 to be tested, and the axis runs through the support column 40, so that the axis can maintain a stable position during the detection process. At the same time, the support column 40 also provides a vertical support force for the axis to ensure that the axis will not deviate when under pressure; the carrying plate 41 is installed on the support column 40, and together with the support column 40, it constitutes a platform for carrying the workpiece 5 to be tested. The main function of the carrying plate 41 is to place the sleeve rod of the workpiece 5 to be tested so that the sleeve rod and the axis are in the same vertical plane. plane, and keep the relative position fixed so as to accurately detect the connection strength of the shaft and the sleeve rod; the centers of the support column 40, the bearing plate 41, the shaft, the pressure monitoring device 3 and the boosting mechanism 20 are located on the same axis, ensuring that during the detection process, the force applied by the boosting mechanism 20 can be accurately transmitted to the shaft through the pressure monitoring device 3, avoiding detection errors caused by uneven force transmission or offset, the support column 40 can move left and right on the second support plate 11 and the front end plate 13, and can adjust the position of the workpiece 5 to be tested in the horizontal direction through the drive of an external device, so that it is accurately aligned with the action point of the boosting guide device 2, further improving the accuracy and reliability of the detection, and ensuring that the pre-pressing mechanism can effectively detect the connection strength of the wiper shaft and the sleeve rod.

[0057] Reference Figure 1-Figure 4 In one embodiment, the front end plate 13 includes an end plate body 130 and a sliding portion 131, the sliding portion 131 is an arc-shaped protrusion, the end plate body 130 is arranged on the base plate 12, the sliding portion 131 is arranged at one end of the end plate body 130 away from the base plate 12, and the sliding portion 131 is located on a side of the end plate body 130 close to the second support plate 11, and an arc-shaped groove corresponding to the arc-shaped protrusion is formed at one end of the second support plate 11 close to the sliding portion 131, so that the specified spacing is arc-shaped.

[0058] In the above embodiment, the front end plate 13 includes an end plate body 130 and a sliding portion 131. The end plate body 130 is fixed on the bottom plate 12 as a basic part to provide stable support for the entire front end plate 13. The sliding portion 131 is an arc-shaped protrusion, located at the end of the end plate body 130 away from the bottom plate 12 and close to the second support plate 11, and cooperates with the arc-shaped groove at one end of the second support plate 11 to form an arc-shaped specified spacing; the arc-shaped groove at one end of the second support plate 11 close to the sliding portion 131 corresponds to the sliding portion 131 of the front end plate 13, and works together with the front end plate 13 to provide a specific trajectory for the movement of the carrying device 4; when the axis of the workpiece 5 to be tested is long, one end of the axis is located within the arc-shaped specified spacing, and during the movement of the support column 40 of the carrying device 4 on the second support plate 11 and the front end plate 13, the axis is affected by the arc-shaped spacing The limitation of makes the carrying device 4 move in an arc trajectory, ensures that the carrying device 4 can accurately move to the center position of the arc vertex, and ensures that the workpiece 5 to be tested is in the best force position during detection. When placing a long-axis workpiece, one end of the shaft enters the specified arc spacing, and the external device is started to push the support column 40 to move. The shaft drives the carrying device 4 to move along the arc trajectory within the arc spacing until it reaches the center position of the arc vertex. At this time, the workpiece 5 to be tested is in the best detection position and the connection strength detection can be carried out. After the detection is completed, if the front end plate 13 needs to be replaced, the old plate is removed and a suitable new plate is installed to prepare for the next detection. The front end plate 13 is detachable, and the front end plates 13 of sliding parts 131 of different sizes can be selected as needed, which is convenient for adjusting the equipment according to workpieces of different lengths of shafts, improving the adaptability and versatility of the equipment, and ensuring the accuracy and efficiency of the detection process.

[0059] Reference Figure 1-Figure 5 In one embodiment, the pre-pressing mechanism further includes a displacement monitoring device 6, which is disposed on the second support plate 11 and located at the center of the second support plate 11, and is used to monitor the movement trajectory of the support column 40.

[0060] In the above embodiment, the pre-pressing mechanism also includes a displacement monitoring device 6, which is a key component in the pre-pressing mechanism for monitoring the position change of the support column 40. The displacement monitoring device 6 includes but is not limited to a linear displacement sensor, a proximity switch, an encoder, and a laser rangefinder. It is installed at the center position of the second support plate 11 and can accurately sense the movement of the support column 40. The displacement monitoring device 6 forms a monitoring and monitored relationship with the support column 40 through its installation position on the second support plate 11, thereby ensuring that the displacement monitoring device 6 can accurately determine whether the support column 40 has reached the center position of the second support plate 11 and the front end plate 13. When performing a detection operation, an external device pushes the support column 40 to move, and the displacement monitoring device 6 continuously monitors its position. Once the support column 40 reaches the center position, the displacement monitoring device 6 sends a signal to suspend the movement of the support column 40. At this time, the shaft in the support column 40 is just within the action range of the boost guide device 2, ensuring that the subsequent pressure applied to the shaft by the boost guide device 2 is accurate and effective, thereby achieving accurate detection of the connection strength between the shaft and the sleeve rod of the workpiece 5 to be tested.

[0061] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A pre-pressing mechanism, characterized in that: It includes a supporting device, a pressure boosting guide device, a pressure monitoring device and a bearing device; The boosting guide device and the carrying device are arranged on the supporting device in a relative manner, and a specified interval is formed between the boosting guide device and the carrying device, the carrying device is used to place the workpiece to be tested, and the boosting guide device is used to move within the specified interval and apply a force to the workpiece to be tested; The pressure monitoring device is arranged at one end of the boosting guide device close to the workpiece to be tested, and is used to obtain the force applied by the boosting guide device and collect the connection status of the workpiece to be tested under a preset pressure.

2. The pre-pressing mechanism according to claim 1, characterized in that: The supporting device comprises a first supporting plate, and the boosting guide device comprises a boosting mechanism and a guide mechanism. The boosting mechanism and the guide mechanism are arranged on the first supporting plate, and the boosting mechanism is connected to the guide mechanism through a first connecting plate, so that the boosting mechanism and the guide mechanism move synchronously.

3. The pre-pressing mechanism according to claim 2, characterized in that: The boost mechanism includes a boost cylinder and a first connecting block. The boost cylinder is arranged on the first supporting plate, and the output shaft of the boost cylinder passes through the first supporting plate. One end of the first connecting block is threadedly connected to the output shaft, and the other end is detachably arranged on the first connecting plate.

4. The pre-pressing mechanism according to claim 3, characterized in that: The guide mechanism includes a sleeve, a guide rod and a limit plate. The sleeve is arranged on the first support plate, the guide rod is slidably connected in the sleeve, and one end of the guide rod is fixedly connected to the first connecting plate. The limit plate is arranged on the other end of the guide rod away from the first connecting plate.

5. The pre-pressing mechanism according to claim 2, characterized in that: The pressure monitoring device comprises a pressure monitoring body and a pressure block. The pressure monitoring body is arranged at one end of the first connecting plate away from the boosting mechanism, and the pressure block is detachably arranged at one end of the pressure monitoring body away from the first connecting plate.

6. The pre-pressing mechanism according to claim 1, characterized in that: The supporting device also includes a second supporting plate, a bottom plate, and a front end plate, a rear end plate and at least two side plates arranged on the bottom plate, the front end plate and the rear end plate are arranged at two ends of the side plate opposite to each other, and the rear end plate is connected to the side plates, the front end plate and the side plates are arranged at intervals, and a supporting platform recessed toward the rear end plate is arranged on a side of the side plate close to the front end plate, the second supporting plate is detachably arranged on the supporting platform, the front end plate and the second supporting plate form a specified spacing, and the top ends of the front end plate and the second supporting plate are located in the same plane, so that the bearing device is arranged on the front end plate and the second supporting plate.

7. The pre-pressing mechanism according to claim 6, characterized in that: A plurality of limiting grooves are arranged on the bottom plate, the front end plate, the rear end plate and the side plate are respectively located in the limiting grooves and connected to the bottom plate, the limiting grooves extend along the entire circumference of the bottom plate, and a plurality of the limiting grooves form openings at the intersections.

8. The pre-pressing mechanism according to claim 6, characterized in that: The carrying device includes a support column and a carrying plate, wherein the support column is detachably connected to the second support plate and the front end plate, the carrying plate is arranged on the support column, the support column is used to place the axis of the workpiece to be tested, the carrying plate is used to place the sleeve rod of the workpiece to be tested, and the axis of the workpiece to be tested passes through the support column.

9. The pre-pressing mechanism according to claim 6, characterized in that: The front end plate includes an end plate body and a sliding portion, the sliding portion is an arc-shaped protrusion, the end plate body is arranged on the base plate, the sliding portion is arranged on an end of the end plate body away from the base plate, and the sliding portion is located on a side of the end plate body close to the second support plate, and an arc-shaped groove corresponding to the arc-shaped protrusion is formed on one end of the second support plate close to the sliding portion, so that the specified spacing is arc-shaped.

10. The pre-pressing mechanism according to claim 8, characterized in that: The pre-pressing mechanism further comprises a displacement monitoring device, which is arranged on the second support plate and located at the center of the second support plate, and is used to monitor the movement trajectory of the support column.

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