Workpiece press-fitting missing detection device

Abstract

The utility model provides a workpiece press-fitting missing detection device, which comprises a pressure head assembly, an air source, a pressure detector, a controller and an alarm assembly, and is characterized in that the pressure head assembly comprises an upper pressure head, a connecting pin and a lower pressure head, the bottom of the upper pressure head is provided with a groove, one end of the connecting pin is slidably arranged in the groove, and the other end of the connecting pin is connected with the lower pressure head; a limiting assembly used for limiting the sliding distance of the connecting pin is arranged on the upper pressing head, when the connecting pin slides in the groove, the top of the lower pressing head can make contact with the bottom of the upper pressing head, an air inlet is formed in the side wall of the lower pressing head, an exhaust port is formed in the top of the lower pressing head, and an air channel communicated with the air inlet and the exhaust port is formed in the lower pressing head. The air source is communicated with the air inlet through the air conveying pipe, the pressure detector is communicated with the air conveying pipe and used for detecting air pressure in the air conveying pipe, and the controller is connected with the alarm assembly and the pressure detector. The device can give an alarm when a pressed workpiece is neglected to be loaded, so that the performance of the whole processed product is prevented from being reduced and even scrapped.

Description

Technical Field

[0001] This utility model belongs to the field of press fitting technology, and in particular relates to a workpiece missing press fitting detection device. Background Technology

[0002] Press-fitting is an important manufacturing process that uses mechanical or hydraulic force to fix one workpiece onto another. Before pressing, the workpiece to be pressed in must be pre-placed on the workpiece to be pressed in, and positioned below the press head. During pressing, the press head moves downward to press the workpiece into the workpiece to complete the press-fitting process. When the workpiece to be pressed in is small, or when multiple workpieces need to be pressed in at once, human error may lead to the omission of a workpiece, resulting in press-fitting failure. If press-fitting failure is not detected in time, it may cause a decrease in the performance of the entire processed product or even scrap it. Utility Model Content

[0003] The purpose of this invention is to provide a workpiece missing pressing detection device that will sound an alarm when a workpiece is missing during pressing, thereby preventing the performance of the entire processed product from deteriorating or even becoming scrap.

[0004] This utility model is achieved through the following technical solution:

[0005] A workpiece pressure leak detection device includes a pressure head assembly, an air source, a pressure detector, a controller, and an alarm component. The pressure head assembly includes an upper pressure head, a connecting pin, and a lower pressure head. The bottom of the upper pressure head has a groove, one end of the connecting pin is slidably disposed in the groove, and the other end of the connecting pin is connected to the lower pressure head. The upper pressure head is provided with a limiting component for limiting the sliding distance of the connecting pin. When the connecting pin slides in the groove, the top of the lower pressure head can contact the bottom of the upper pressure head. An air inlet is provided on the side wall of the lower pressure head, and an exhaust port is provided on the top of the lower pressure head. An air passage connecting the air inlet and the exhaust port is provided inside the lower pressure head. The air source is connected to the air inlet through an air supply pipe, and the pressure detector is connected to the air supply pipe for detecting the air pressure in the air supply pipe. The controller is connected to both the alarm component and the pressure detector.

[0006] Furthermore, the connecting pin has an elongated through hole, and the side wall of the upper pressure head has two symmetrically arranged threaded holes. The limiting component includes a limiting bolt, which is threadedly connected to the two threaded holes and passes through the elongated through hole.

[0007] Furthermore, the gas pipeline is equipped with a valve.

[0008] Compared to existing technologies, the advantages of this invention are as follows: The controller monitors the air pressure changes in the air path using a pressure detector to detect whether small workpieces are properly press-fitted. When the small workpiece is properly press-fitted, the air path is sealed, and the pressure value in the air path will rise to the set range, indicating normal press-fitting. When a small workpiece is not properly press-fitted, the air path leaks, and the air pressure does not fluctuate significantly, indicating abnormal press-fitting. At this time, the pressure head will not rise and cannot reach the set range. The controller will then issue an alarm signal through the alarm component to remind the operator to handle the situation promptly. By detecting the pressure value, the invention identifies whether there is a leak in the press-fitting process, thus realizing the detection of the workpiece press-fitting status and avoiding the problem of missing press-fitting of small workpieces due to human fatigue or lack of concentration. The design of this device is flexible and easy to adjust, and can adapt to the press-fitting needs of small workpieces of different sizes and types. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the workpiece leakage detection device of this utility model;

[0010] Figure 2 This is a schematic diagram of the pressure head assembly in the workpiece leakage detection device of this utility model;

[0011] Figure 3 This is a schematic diagram of the upper pressure head in the workpiece leakage detection device of this utility model;

[0012] Figure 4 This is a schematic diagram of the lower pressure head and connecting pin in the workpiece leakage detection device of this utility model.

[0013] In the diagram, 1-pressure head assembly, 11-upper pressure head, 111-groove, 112-threaded hole, 12-connecting pin, 121-elongated through hole, 13-lower pressure head, 131-air passage, 2-air source, 3-pressure detector, 4-controller, 5-alarm assembly, 6-limit bolt. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0016] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this utility model, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0017] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0018] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] Please see Figures 1 to 4 , Figure 1 This is a schematic diagram of the workpiece leakage detection device of this utility model. Figure 2 This is a schematic diagram of the pressure head assembly in the workpiece leakage detection device of this utility model. Figure 3 This is a schematic diagram of the upper pressure head in the workpiece leakage pressure detection device of this utility model. Figure 4This is a schematic diagram of the lower pressure head and connecting pin in the workpiece leakage detection device of this utility model. A workpiece underpressure detection device includes a pressure head assembly 1, an air source 2, a pressure detector 3, a controller 4, and an alarm component 5. The pressure head assembly 1 includes an upper pressure head 11, a connecting pin 12, and a lower pressure head 13. The bottom of the upper pressure head 11 has a groove 111. One end of the connecting pin 12 is slidably disposed in the groove 111, and the other end of the connecting pin 12 is connected to the lower pressure head 13. The upper pressure head 11 is provided with a limiting component for limiting the sliding distance of the connecting pin 12. When the connecting pin 12 slides in the groove 111, the top of the lower pressure head 13 can contact the bottom of the upper pressure head 11. The side wall of the lower pressure head 13 is provided with an air inlet, and the top of the lower pressure head 13 is provided with an exhaust port. The lower pressure head 13 is provided with an air passage 131 connecting the air inlet and the exhaust port. The air source 2 is connected to the air inlet through an air supply pipe. The pressure detector 3 is connected to the air supply pipe and is used to detect the air pressure in the air supply pipe. The controller 4 is connected to the alarm component 5 and the pressure detector 3 respectively.

[0020] The working principle of this workpiece under-pressurization detection device is briefly explained below:

[0021] The upper pressure head 11 is connected to the pressing power source to receive the pressure generated by the power source. The air supply pipe is connected to the air passage 131 to form an air passage. Before pressing, due to gravity, the connecting pin 12 will slide down one end of the groove 111 in the upper pressure head 11. At this time, there is a gap between the upper pressure head 11 and the lower pressure head 13, the air passage is in a leaking state, the air passage pressure is low, and the reading of the pressure detector 3 is also low. When the workpiece is being pressed in normally, the pressing head assembly 1 moves downward as a whole under the thrust of the power source. When the lower pressing head 13 contacts the pressing fixture, the workpiece will generate resistance to the movement of the lower pressing head 13. The upper pressing head 11 continues to move downward under the thrust of the power source, while the connecting pin 12 slides in the groove 111 until the bottom of the upper pressing head 11 contacts the top of the lower pressing head 13. At this time, the upper pressing head 11 directly applies force to the lower pressing head 13, and the workpiece is pressed into the workpiece through the lower pressing head 13. During the pressing process, the exhaust port at the top of the lower pressing head 13 is sealed by the upper pressing head 11, thereby sealing the air path. The pressure data measured by the pressure detector 3 rises. When the controller 4 detects that the pressure value measured by the pressure detector 3 reaches the set range and the stroke of the power source is greater than the preset value, it is determined that the pressing is normal. Then the power source drives the pressure head assembly 1 away from the pressed workpiece. The upper pressure head 11 and the lower pressure head 13 separate under the action of gravity. The exhaust port is not sealed and the air path leaks. The controller 4 detects that the pressure data measured by the pressure detector 3 has dropped, and the next pressing can be carried out.

[0022] When a workpiece is not pressed in and the pressing is performed directly, the power source drives the pressing head assembly 1 to move downwards beyond the preset stroke. Since there is no workpiece to block it, the lower pressing head 13 and the upper pressing head 11 move synchronously, so that the upper pressing head 11 and the lower pressing head 13 do not contact each other. The exhaust port on the lower pressing head 13 is not sealed, and the air path is always in a leaking state. The controller 4 detects that the pressure value measured by the pressure detector 3 cannot reach the preset range, and determines that the pressing is unsuccessful. The power source does not drive the pressing head assembly 1 to rise, and the controller 4 triggers the alarm component 5. The alarm component 5 alarms to remind the staff to deal with it in time.

[0023] In one embodiment, the connecting pin 12 has an elongated through hole 121, and the upper pressure head 11 has two symmetrically arranged threaded holes 112 on its side wall. The limiting assembly includes a limiting bolt 6, which is threadedly connected to the two threaded holes 112 and passes through the elongated hole. The limiting bolt 6 can move along the elongated through hole 121. By engaging with the elongated through hole 121, the sliding distance of the connecting pin 12 in the groove 111 is limited, thereby preventing the connecting pin 12 from sliding out of the groove 111, and integrating the upper pressure head 11, the connecting pin 12, and the lower pressure head 13 together.

[0024] In one embodiment, a valve is provided on the gas supply pipe. The valve controls the connection between the gas path and the gas source 2, facilitating the start-up and operation of the workpiece leakage detection device of this utility model.

[0025] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A workpiece under-pressurization detection device, characterized in that, The device includes a pressure head assembly, an air source, a pressure detector, a controller, and an alarm assembly. The pressure head assembly includes an upper pressure head, a connecting pin, and a lower pressure head. The bottom of the upper pressure head has a groove, one end of the connecting pin is slidably disposed in the groove, and the other end of the connecting pin is connected to the lower pressure head. The upper pressure head is provided with a limiting component to restrict the sliding distance of the connecting pin. When the connecting pin slides in the groove, the top of the lower pressure head can contact the bottom of the upper pressure head. The side wall of the lower pressure head has an air inlet, and the top of the lower pressure head has an exhaust port. The lower pressure head has an air passage connecting the air inlet and the exhaust port. The air source is connected to the air inlet through an air supply pipe, and the pressure detector is connected to the air supply pipe to detect the air pressure in the air supply pipe. The controller is connected to both the alarm assembly and the pressure detector.

2. The workpiece leak detection device according to claim 1, characterized in that, The connecting pin has an elongated through hole, and the upper pressure head has two symmetrically arranged threaded holes on its side wall. The limiting component includes a limiting bolt, which is threadedly connected to the two threaded holes and passes through the elongated through hole.

3. The workpiece leak detection device according to claim 1, characterized in that, The gas pipeline is equipped with a valve.

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