Press fitting device for positioning pin bush

Abstract

The utility model relates to a press-fitting device for a positioning pin bush. The press-fitting device comprises a recursive feeding mechanism, a follow-up bin door and a positioning pin bush pressing head, the outlet end of the recursive feeding mechanism is connected to the lower portion of the pressing head, the follow-up bin door is arranged under the pressing head, and meanwhile the follow-up bin door is also located under the outlet end of the recursive feeding mechanism; the pressing head vertically moves downwards to push the follow-up bin door to be opened, and after the pressing head returns to the initial position, the follow-up bin door is reset to the horizontal position, so that the positioning pin bush at the outlet of the recursive feeding mechanism is supported and prevented from falling off. According to the automatic press-fitting mechanism, the automatic pushing feeding mechanism is used for feeding, and the situation that a traditional cutting mechanism blocks materials can be effectively avoided; the follow-up bin door is used at the tail end of the feeding mechanism and is opened and closed along with the action of the pressure head, so that the pin bushes are effectively prevented from falling off; a pure mechanical follow-up mechanism is used, simplicity, reliability and high efficiency are achieved, and production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automated press-fitting equipment, in particular to a press-fitting device for a positioning pin sleeve. Background Art

[0002] With the rapid development of new energy vehicle technology, especially the widespread application of BEV (pure electric vehicle) and PHEV (plug-in hybrid electric vehicle), the electric drive system, as the core component of new energy vehicles, has increasingly stringent performance, efficiency and quality requirements. In the electric drive assembly, the housing, as a key component, not only carries core components such as the motor, controller and reducer, but is also responsible for maintaining the correct position between them to ensure the accuracy and stability of power transmission.

[0003] Traditional methods of pressing the positioning pin sleeves of electric drive housings are mostly done manually or semi-automatically, which has many shortcomings. First, manual pressing is labor-intensive and has low production efficiency, making it difficult to meet the needs of large-scale production. Second, the accuracy of manual operation is difficult to guarantee, which can easily lead to inaccurate positioning of the pin sleeves, affecting the overall performance of the electric drive system. In addition, there are safety hazards in the manual pressing process, and careless operation may cause industrial accidents.

[0004] In order to improve the automation level and production efficiency of the press-fitting of the positioning pin sleeves of the electric drive housing, and reduce production costs and safety hazards, in-depth research has been conducted on automated press-fitting technology at home and abroad in recent years. However, most of the automated press-fitting equipment on the market is designed for general parts and cannot meet the special requirements of the press-fitting of the positioning pin sleeves of the electric drive housing. For example, the positioning pin sleeve is cut into the press head using a cutting mechanism and then press-fitted. This mechanism is prone to jamming when encountering a pin sleeve with a small aspect ratio and cannot work properly.

[0005] Therefore, developing a special device for automatic press-fitting of electric drive housing locating pin sleeves has important practical significance and application value. The device can realize automatic positioning, automatic press-fitting and automatic detection of electric drive housing locating pin sleeves, improve press-fitting accuracy and production efficiency, and reduce production costs and safety hazards. At the same time, the device can also be flexibly adjusted according to different models and specifications of electric drive housings to meet different production needs. Utility Model Content

[0006] The utility model aims to provide a press-fitting device for a positioning pin sleeve, aiming to overcome the defects of the prior art and solve the problem that the prior mechanism is easy to get stuck and cannot work normally when encountering a pin sleeve with a small aspect ratio.

[0007] To this end, the utility model proposes a pressing device for a positioning pin sleeve, comprising: a recursive feeding mechanism, a follower silo door and a positioning pin sleeve pressure head; the outlet end of the recursive feeding mechanism is connected to the bottom of the pressure head, the follower silo door is arranged directly below the pressure head, and the follower silo door is also located below the outlet end of the recursive feeding mechanism; the pressure head moves vertically downward to push the follower silo door to open, and after the pressure head retreats to the initial position, the follower silo door resets to a horizontal position, thereby supporting the positioning pin sleeve at the outlet of the recursive feeding mechanism and preventing it from falling.

[0008] As a preferred technical solution of the present application, the follower silo door has a pair of silo doors and a reset torsion spring. The silo door is rotationally connected to the mounting seat where the pressure head is located, and is reset by the reset torsion spring.

[0009] As a preferred technical solution of the present application, the recursive feeding mechanism has a material guide tube with an arc-shaped tube structure.

[0010] As a preferred technical solution of the present application, the inner cavity structure of the material guide tube matches the shape of the positioning pin sleeve.

[0011] As a preferred technical solution of the present application, a pressure rod is connected to the upper end of the pressure head.

[0012] As a preferred technical solution of the present application, the pressure rod is arranged in a pressure rod guide sleeve.

[0013] As a preferred technical solution of the present application, the outer side of the pressure rod guide sleeve is slidably matched with the sliding sleeve.

[0014] As a preferred technical solution of the present application, a return spring is arranged above the sliding sleeve, and the return spring is used to return the downwardly moving pressure rod upward to a suitable position.

[0015] As a preferred technical solution of the present application, a wire retaining ring tensioning mechanism is provided at the end of the pressure head, and the wire retaining ring tensioning mechanism cooperates with the inner ring of the positioning pin sleeve.

[0016] As a preferred technical solution of the present application, an in-position sensor is provided on the mounting seat where the pressure head is located, and the in-position sensor is located opposite to the outlet end of the recursive feeding mechanism.

[0017] The press-fitting device of the positioning pin sleeve provided by the utility model has the following beneficial effects:

[0018] 1) The automatic feeding mechanism is used to feed materials, which can effectively avoid the jamming of the traditional cutting mechanism; 2) A follower bin door is used at the end of the feeding mechanism, which opens and closes following the action of the pressure head, effectively preventing the pin sleeve from falling; 3) The pressure head uses a wire retaining ring tensioning mechanism to effectively fix the pin sleeve on the pressure head to prevent it from falling; 4) It is used to automatically position the pin sleeve for feeding and automatically press-fitting it into the housing, using a purely mechanical follower mechanism, which is simple, reliable and efficient, thereby improving production efficiency.

[0019] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 It is a structural schematic diagram of the press-fitting device of the positioning pin sleeve of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the recursive feeding mechanism in the press-fitting device of the positioning pin sleeve of the utility model;

[0023] Figure 3 It is a schematic diagram of the working state of the follower silo door in the press-fitting device of the positioning pin sleeve of the utility model;

[0024] Description of Reference Numerals

[0025] 1. Recursive feeding mechanism; 2. Follow-up silo door; 3. Pressure head; 4. Pressure rod guide sleeve; 5. Sliding sleeve; 6. Reset spring; 21. Bin door; 22. Reset torsion spring; 7. Positioning pin sleeve; 8. Pressure rod; 9. In-position sensor. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] like Figure 1 to Figure 3 As shown, the press-fitting device of the positioning pin sleeve of the utility model comprises: a recursive feeding mechanism 1, a follower bin door 2, a positioning pin sleeve pressure head 3, a pressure rod guide sleeve 4, a sliding sleeve 5 and a reset spring 6; the mechanism can realize automatic feeding and automatic press-fitting of positioning pin sleeves with a small aspect ratio.

[0028] Specifically, the outlet end of the recursive feeding mechanism 1 is connected to the bottom of the pressure head 3, and a follower silo door 2 is provided directly below the pressure head 3, and the follower silo door 2 is located below the end of the recursive feeding mechanism 1; the upper end of the pressure head 3 is connected to a pressure rod 8, and the pressure rod 8 is arranged in a pressure rod guide sleeve 4, and the outer side of the pressure rod guide sleeve 4 is in sliding cooperation with the sliding sleeve 5; the reset spring 6 is arranged above the sliding sleeve 5, and the reset spring 6 is used to reset the downward-moving pressure rod 8 to a suitable position upward.

[0029] like Figure 1 As shown, the recursive feeding mechanism 1 has a material guide tube with an arc-shaped tube structure, so that the positioning pin sleeves 7 can be arranged in sequence in the material guide tube; wherein, the inner cavity structure of the material guide tube matches the outer shape of the positioning pin sleeves 7, so that the positioning pin sleeves 7 are not prone to problems such as material jamming when moving in the recursive feeding mechanism 1.

[0030] By using a recursive feeding mechanism, the situation of material turning over and jamming during the feeding process of the pin sleeve with a small aspect ratio is avoided, and the situation of material jamming in the traditional cutting mechanism can be effectively avoided.

[0031] In addition, a position sensor 9 is provided on the mounting seat where the pressure head 3 is located, and the position sensor 9 is opposite to the outlet end of the recursive feeding mechanism 1. When the positioning pin sleeve 7 in front of the outlet end of the recursive feeding mechanism 1 is in place, the position sensor 9 detects that the positioning pin sleeve is in place.

[0032] like Figure 3 As shown, the follower silo door 2 has a pair of silo doors 21 and a reset torsion spring 22. The silo doors 21 are rotatably connected to the mounting seat and are reset by the reset torsion spring 22. The pressure head 3 moves downward to push the pair of silo doors 21 to open. After the pressure head 3 returns to the initial position, the silo door 21 is not subject to the force of the pressure head 3 and is reset to a horizontal position under the action of the reset torsion spring 22, thereby supporting the positioning pin sleeve 7 at the outlet of the recursive feeding mechanism 1 to prevent it from falling.

[0033] Among them, Figure 2 As shown, the pressure head 3 uses a wire retaining ring tensioning mechanism, which cooperates with the inner ring of the positioning pin sleeve 7 to effectively fix the pin sleeve on the pressure head to prevent it from falling.

[0034] The working principle and working process of the press-fitting device of the positioning pin sleeve of the utility model are briefly described below.

[0035] S1: First, the positioning pin sleeves 7 are pushed forward one by one in the recursive feeding mechanism 1;

[0036] S2: Secondly, when the front end positioning pin sleeve 7 is in place, the in-place sensor 9 detects that the positioning pin sleeve is in place, and after the mechanism receives the press-fitting request, the external press will push the positioning pin sleeve pressure head 3 downward to move downward and insert the positioning pin sleeve 7;

[0037] S3: Then, the pressure head 3 pushes open the follower silo door 2 with the pin sleeve and continues to press down until the pin sleeve is pressed into the housing.

[0038] S4: Then, the pressure head 3 retreats into the recursive feeding mechanism 1, and the follower silo door 2 will close accordingly.

[0039] S5: Finally, the positioning pin sleeve 7 repeats the first step and automatically advances one material level.

[0040] The present invention is applied to automated press-fitting equipment, such as automatic press-fitting of positioning pin sleeves for electric drive housings, and is specifically used for automatic positioning pin sleeve feeding and automatic press-fitting of housings, using a purely mechanical follow-up mechanism, which is simple, reliable and efficient, thereby improving production efficiency.

[0041] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A press-fitting device for a positioning pin sleeve, characterized in that: include: A recursive feeding mechanism (1), a follower bin door (2) and a positioning pin sleeve pressure head (3); The outlet end of the recursive feeding mechanism (1) is connected to the bottom of the pressure head (3), the follower bin door (2) is arranged directly below the pressure head (3), and the follower bin door (2) is also located below the outlet end of the recursive feeding mechanism (1); The pressure head (3) moves vertically downward to push the follower bin door (2) to open. After the pressure head (3) returns to the initial position, the follower bin door (2) returns to the horizontal position, thereby supporting the positioning pin sleeve (7) at the outlet of the recursive feeding mechanism (1) and preventing it from falling.

2. The press-fitting device for the positioning pin sleeve according to claim 1, characterized in that: The follower silo door (2) comprises a pair of silo doors (21) and a reset torsion spring (22); the silo door (21) is rotatably connected to a mounting seat where the pressure head (3) is located, and is reset by means of the reset torsion spring (22).

3. The press-fitting device for the positioning pin sleeve according to claim 1, characterized in that: The recursive feeding mechanism (1) has a material guiding pipe with an arc-shaped pipe structure.

4. The press-fitting device for the positioning pin sleeve according to claim 3, characterized in that: The inner cavity structure of the material guiding tube matches the outer shape of the positioning pin sleeve (7).

5. The press-fitting device for the positioning pin sleeve according to claim 1, characterized in that: The upper end of the pressure head (3) is connected to a pressure rod (8).

6. The press-fitting device for the positioning pin sleeve according to claim 5, characterized in that: The pressure rod (8) is arranged in the pressure rod guide sleeve (4).

7. The press-fitting device for the positioning pin sleeve according to claim 6, characterized in that: The outer side of the pressure rod guide sleeve (4) is slidably matched with the sliding sleeve (5).

8. The press-fitting device for the positioning pin sleeve according to claim 7, characterized in that: A return spring (6) is arranged above the sliding sleeve (5), and the return spring (6) is used to return the downwardly moving pressure rod (8) upward to a suitable position.

9. The press-fitting device for the positioning pin sleeve according to claim 1, characterized in that: A wire retaining ring tensioning mechanism is provided at the end of the pressure head (3), and the wire retaining ring tensioning mechanism cooperates with the inner ring of the positioning pin sleeve (7).

10. The press-fitting device for the positioning pin sleeve according to claim 1, characterized in that: An on-site sensor (9) is provided on the mounting seat where the pressure head (3) is located, and the on-site sensor (9) is located opposite to the outlet end of the recursive feeding mechanism (1).

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