A press-fitting mechanism

Abstract

The utility model discloses a kind of press-fitting mechanisms, including press-fitting head, press-fitting head has lower end surface, and the positioning member being set in press-fitting head, positioning member is equipped with elastic member, elastic member drives positioning member to extend lower end surface, so that it is in extended position, positioning member is correspondingly set with eccentric hole of second part, when press-fitting head is connected with second part, positioning member is inserted into eccentric hole, when press-fitting head is connected with third part, positioning member is compressed back into press-fitting head by third part upper end surface push, press-fitting head middle part is equipped with negative pressure passage, and the upper end surface of second part and third part is adsorbed by negative pressure passage.The utility model realizes accurate positioning, improves press-fitting precision, ensures that part is reliably adsorbed in press-fitting process, and prevents deviation.

Description

Technical Field

[0001] This utility model relates to the field of press-fitting technology, and in particular to a press-fitting mechanism. Background Technology

[0002] A press-fitting mechanism is a device used in industrial manufacturing to clamp, assemble, or press-fit workpieces. Existing press-fitting mechanisms typically include a press-fitting head, which is used to pick up and position the part. The press then drives the press-fitting head downwards, pressing the part into the designated position. Because different parts have different structures, each part usually requires a corresponding press-fitting head. When there are many parts, a large number of press-fitting heads are needed to accommodate each part, resulting in a larger press-fitting mechanism. Utility Model Content

[0003] The purpose of this invention is to solve the technical problems of existing pressing mechanisms where the pressing head can only correspond to one type of part and the pressing mechanism itself is large in size.

[0004] To achieve the objectives of this utility model, the following technical solution is adopted: A pressing mechanism includes a pressing head having a lower end face and a positioning member disposed within the pressing head. The positioning member is provided with an elastic element, which drives the positioning member to extend out of the lower end face, placing it in an extended position. The positioning member is correspondingly disposed to an eccentric hole of a second part. When the pressing head mates with the second part, the positioning member is inserted into the eccentric hole. When the pressing head mates with a third part, the positioning member is pushed back into the pressing head by the upper end face of the third part. A negative pressure channel is provided in the middle of the pressing head, which adsorbs the upper end faces of the second and third parts.

[0005] In some embodiments, the positioning element is movably disposed along the axial direction.

[0006] In some embodiments, a detection sensor is provided above the positioning member to detect the position of the positioning member.

[0007] In some embodiments, the negative pressure channel includes an annular airway and a central channel, with the annular airway surrounding the central channel.

[0008] In some embodiments, a limiting rod is provided on the side of the pressing head, and the limiting rod is correspondingly provided with a limiting hole of the second part.

[0009] In some embodiments, the second part has a central hole in the middle, and a limiting hole and an eccentric hole are located around the central hole.

[0010] In some embodiments, the pressing head is cylindrical, and the lower end face is circular.

[0011] The pressing mechanism provided by this utility model has the following advantages: This invention achieves precise positioning and improves pressing accuracy by using a retractable positioning element that engages with the eccentric hole of the second part. The elastic element allows the positioning element to automatically extend and retract according to different parts, meeting the needs of continuous pressing of multiple parts. The negative pressure channel design ensures that the parts are reliably attracted during the pressing process, preventing displacement. The detection sensor can monitor the position status of the positioning element in real time, facilitating the identification of the second and third parts. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the pressing mechanism provided in an embodiment of the present utility model.

[0014] Figure 2 This is a perspective view of the pressing head provided in an embodiment of this utility model.

[0015] Figure 3 This is a schematic diagram of the pressing head provided in an embodiment of the present invention.

[0016] Figure 4 This is a schematic diagram of the press-fitting head adsorbing a third part according to an embodiment of this utility model.

[0017] In the attached diagram: 20, second part; 22, press-fit head; 30, third part; 201, eccentric hole; 202, limiting hole; 203, center hole; 220, lower end face; 221, positioning element; 222, elastic element; 223, detection sensor; 224, negative pressure channel; 225, limiting rod; 226, negative pressure channel; 2211, rod part; 2241, annular air passage; 2242, middle channel; 301, upper end face. Detailed Implementation

[0018] 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 some embodiments of this utility model, but not all embodiments.

[0019] In this embodiment, "several" and "more than" refer to two or more. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] like Figures 1 to 4 As shown, this embodiment provides a pressing mechanism including a pressing head 22, which has a lower end face 220 and a positioning member 221 disposed within the pressing head 22. The positioning member 221 has an elastic member 222 and a rod portion 2211. The elastic member 222 is sleeved on the rod portion 2211 and is a spring. The elastic member 222 drives the positioning member 221 to extend beyond the lower end face 220, placing it in the extended position. The positioning member 221 is axially movable, meaning it can move up and down. The positioning member 221 corresponds to the eccentric hole 201 of the second part 20, so that when the second part 20 is adsorbed onto the pressing head 22, the positioning member 221 can be inserted into the eccentric hole 201 to position the second part 20. When the pressing head 22 mates with the third part 30, the positioning member 221 is pushed back into the pressing head 22 by the upper end face 301 of the third part 30. Since the third part 30 does not have an eccentric hole corresponding to the positioning member 221, the positioning member 221 can be pressed into the pressing head 22 under force, avoiding interference with the third part 30. The pressing head 22 has a negative pressure channel 226 in the middle. The negative pressure channel 226 adsorbs the upper end faces of the second part 20 and the third part 30, thereby positioning the second and third parts. In this embodiment, the second part 20 is the buffer block of the urea pump, and the third part 30 is the filter element of the urea pump.

[0022] Through the above technical solution, when pressing the second or third part, the second or third part is first adsorbed by the pressing head 22, and then the pressing head is driven by the press to press down to the designated position to install the corresponding part. The pressing mechanism of this embodiment enables the pressing head 22 to be adapted to the second part 20 and the third part 30, thereby improving the utilization rate of the pressing head 22.

[0023] Furthermore, a detection sensor 223 is provided above the positioning member 221 to detect the position of the positioning member 221. When the third part 30 pushes the positioning member 221 upward, it moves towards the detection sensor 223, and the detection sensor 223 receives a signal. After the third part 30 is installed, the positioning member 221 resets, and the detection sensor 223 no longer detects a signal, thereby identifying the installation status of the third part 30. The detection sensor 223 can be an existing sensor such as a proximity sensor.

[0024] Furthermore, the press-fit head 22 is provided with a negative pressure channel 224, which communicates with the lower end face of the press-fit head 22. The end face of the second part 20 or the third part 30 is in contact with the lower end face. When the negative pressure is activated, the negative pressure channel 224 sucks the second or third part in place by the negative pressure. The negative pressure channel 224 includes an annular air passage 2241 and a central channel 2242. The annular air passage 2241 is arranged around the central channel 2242, which is arranged vertically and communicates with a vacuum generator. The negative pressure generated by the vacuum generator is introduced into the press-fit head 22 through the central channel 2242. The annular air passage 2241 is arranged on the periphery, thereby expanding the negative pressure adsorption range and enabling the press-fit head 22 to adsorb the upper end face of the second and third parts. The side of the press-fit head 22 is provided with a limiting rod 225, which corresponds to the limiting hole 202 of the second part 20, so that it can position the second part 20. The second part 20 has a central hole 203 in the middle, and a limiting hole 202 and an eccentric hole 201 are located around the central hole 203.

[0025] The working process of the pressing mechanism in this embodiment is as follows: During the press-fitting of the second part 20, the second part 20 is manually assembled onto the press-fitting head 22. The limiting rod 225 is aligned with the limiting hole 202 of the second part, and the positioning element 221, under the action of the elastic element, is aligned with the eccentric hole 201 of the second part 20. The limiting rod 225 is inserted into the limiting hole, and the positioning element is inserted into the eccentric hole, achieving precise positioning. Simultaneously, the negative pressure channel is activated, generating an adsorption force to adsorb and fix the upper end face of the second part onto the lower end face of the press-fitting head. The detection sensor detects that the positioning element is in the extended position, confirming that the positioning is complete, and the press-fitting head applies pressure to complete the press-fitting of the second part.

[0026] When pressing the third part 30, the third part is manually assembled into the pressing head 22. The upper surface of the third part contacts the positioning element 221 and pushes the positioning element 221 upward, compressing the elastic element and causing the positioning element 221 to retract back into the pressing head. The detection sensor detects that the positioning element is in the retracted position. At this time, the negative pressure channel adsorbs the upper surface of the third part, and the pressing head applies pressure to complete the assembly of the third part.

[0027] This embodiment uses one press to drive two pressing mechanisms, which can improve the efficiency of the press, reduce the number of presses, and reduce space occupation; at the same time, it can press three kinds of parts through two pressing mechanisms, thereby improving the pressing efficiency of the pressing mechanism.

[0028] The technical principles of this utility model have been described above in conjunction with specific embodiments. However, it should be noted that these descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, other specific embodiments or equivalent substitutions of this utility model that can be conceived by those skilled in the art without creative effort will all fall within the scope of protection of this utility model.

Claims

1. A pressing mechanism, characterized in that, The device includes a pressing head with a lower end face and a positioning element disposed within the pressing head. The positioning element has an elastic element that drives the positioning element to extend out of the lower end face, placing it in the extended position. The positioning element is correspondingly positioned to the eccentric hole of the second part. When the pressing head mates with the second part, the positioning element is inserted into the eccentric hole. When the pressing head mates with the third part, the positioning element is pushed back into the pressing head by the upper end face of the third part. A negative pressure channel is provided in the middle of the pressing head, which adsorbs the upper end faces of the second and third parts.

2. The pressing mechanism according to claim 1, characterized in that, The positioning element is movably positioned along the axial direction.

3. The pressing mechanism according to claim 2, characterized in that, A detection sensor is provided above the positioning component to detect its position.

4. The pressing mechanism according to claim 3, characterized in that, The negative pressure channel includes an annular airway and a central channel, with the annular airway surrounding the central channel.

5. The pressing mechanism according to claim 4, characterized in that, The pressing head is provided with a limiting rod on its side, and the limiting rod is set to correspond to the limiting hole of the second part.

6. The pressing mechanism according to claim 5, characterized in that, The second part has a central hole in the middle, and a limiting hole and an eccentric hole are located around the central hole.

7. The pressing mechanism according to claim 6, characterized in that, The pressing head is cylindrical, and the lower end face is circular.

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