Press fitting device

Abstract

The utility model relates to a press fitting device which comprises a supporting frame. The positioning assembly is arranged on the supporting frame and used for supporting and limiting a product to be pressed; the pressing assembly is arranged on the supporting frame and used for pressing the product, the pressing assembly comprises a pressing air cylinder, two connecting rod mechanisms and two pressing blocks, the two pressing blocks are oppositely arranged on the two sides of the positioning assembly, and the pressing blocks are slidably connected with the supporting frame; the two ends of the press-fitting air cylinder are connected with the two press-fitting blocks through the two connecting rod mechanisms correspondingly, and the press-fitting air cylinder is used for driving the two press-fitting blocks to move relatively so as to conduct press-fitting on the product. The whole device is compact and reasonable in structure, high in press-fitting precision and particularly suitable for an automatic production line, and the assembly efficiency can be greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of non-standard automation technology, and in particular to a pressing device. Background Technology

[0002] The stepper sensor unit is a core component of the automotive seat belt retractor. Its processing and installation quality directly affect the retractor's performance. The sensitive ball assembly is the core component of the stepper sensor unit, responsible for high-precision detection of multidimensional force, displacement, or directional changes.

[0003] like Figures 1-2 As shown, the sensitive ball assembly 100 typically consists of two snap-fit ​​parts 110 and a pendulum-shaped part 120. The two snap-fit ​​parts 110 interlock to confine the pendulum-shaped part 120 between them. Because the sensitive ball assembly 100 is relatively small, requires a certain level of installation precision, and is in high demand, traditional manual and semi-automatic pressing devices are no longer sufficient to meet the requirements. Utility Model Content

[0004] The purpose of this invention is to provide a pressing device with a compact and reasonable structure, high pressing accuracy, and is especially suitable for automated production lines, which can greatly improve assembly efficiency.

[0005] To achieve the above objectives, this utility model provides a pressing device, comprising:

[0006] Supporting framework;

[0007] A positioning component is disposed on the support frame and is used to support and limit the product to be pressed;

[0008] A pressing assembly is disposed on the support frame and used to press the product. The pressing assembly includes a pressing cylinder, two linkage mechanisms, and two pressing blocks. The two pressing blocks are disposed opposite to each other on both sides of the positioning assembly, and the pressing blocks are slidably connected to the support frame. The two ends of the pressing cylinder are respectively connected to the two pressing blocks through the two linkage mechanisms. The pressing cylinder is used to drive the two pressing blocks to move relative to each other to press the product.

[0009] Optionally, the positioning assembly includes a product placement block, a positioning cylinder, a push rod connecting plate, and two symmetrically arranged positioning units. The positioning cylinder and the product placement block are both mounted on the support frame. The product placement block has a groove for placing the product. The push rod connecting plate is fixed to the telescopic end of the positioning cylinder. The positioning unit includes a positioning block, a swing linkage, and a push rod. One end of the push rod passes vertically through the product placement block and is connected to the push rod connecting plate. The other end is rotatably connected to the positioning block through the swing linkage. The positioning cylinder is used to drive the push rod connecting plate to move vertically, thereby driving the two positioning blocks to swing above the product through the two swing linkages to limit the product vertically.

[0010] Optionally, the positioning assembly further includes a cylinder mounting plate and two mounting posts. The positioning cylinder is mounted on the cylinder mounting plate, and both ends of the cylinder mounting plate are respectively mounted on the support frame via the two mounting posts.

[0011] Optionally, the press-fitting assembly further includes two fixed hinge supports mounted on the support frame, wherein the two fixed hinge supports respectively constitute the hinge nodes of two adjacent links in the two linkage mechanisms.

[0012] Optionally, the support frame is equipped with a sliding guide rail, and the two pressing blocks are slidably connected to the sliding guide rail respectively.

[0013] Optionally, the pressing assembly further includes a first limiting unit and a second limiting unit. The first limiting unit is used to limit the forward limit position of each of the two pressing blocks when they move relative to each other, and the second limiting unit is used to limit the backward limit position of each of the two pressing blocks when they move in opposite directions.

[0014] Optionally, the first limiting unit includes a limiting block and two first limiting screws. The limiting block is installed on the support frame and located between the two first limiting screws. The two first limiting screws are respectively installed on the two pressing blocks. When the pressing block moves to the forward limit position, the corresponding first limiting screw abuts against the limiting block.

[0015] Optionally, the second limiting unit includes two limiting seats and two second limiting screws. The two limiting seats are respectively installed at both ends of the support frame and located on the side of the two pressing blocks away from the product. The two second limiting screws are respectively installed on the two limiting seats. When the pressing block moves to the backward limit position, it abuts against the corresponding second limiting screw.

[0016] Optionally, the pressing device further includes a product presence / absence detection component, which is installed on the support frame and used to detect whether the product is placed on the positioning component.

[0017] Optionally, the pressing device includes a pressing detection component, which includes a contact displacement sensor and a position measuring block respectively installed on the two pressing blocks. The contact displacement sensor is used to detect the position of the position measuring block.

[0018] The pressing device provided by this utility model has at least the following effective effects:

[0019] 1) The entire device has a compact and reasonable structure and high pressing accuracy, making it especially suitable for automated production lines and greatly improving assembly efficiency.

[0020] 2) By setting up positioning components, the product can be effectively supported and vertically limited, thus improving the accuracy of press-fitting;

[0021] 3) By setting the first limit unit and the second limit unit, the relative movement and opposite movement of the two pressing blocks can be limited to ensure that the product pressing is qualified;

[0022] 4) By setting up a pressing and testing component, it is possible to detect whether the pressing of the product is qualified. The pressing and testing of the product can be realized simultaneously on one set of equipment. Attached Figure Description

[0023] Those skilled in the art will understand that the accompanying drawings are provided to better understand the present invention and do not constitute any limitation on the scope of the present invention. Wherein:

[0024] Figure 1 This is a schematic diagram of the overall sensitive ball assembly;

[0025] Figure 2 An exploded view of the sensitive ball assembly;

[0026] Figure 3 This is an overall schematic diagram of a pressing device provided in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of a press-fit assembly provided in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the support frame provided in an embodiment of the present utility model;

[0029] Figure 6 This is a schematic diagram of the structure of a positioning component provided in an embodiment of the present invention;

[0030] Figure 7This is a schematic diagram of the structure of a product presence or absence detection component provided in an embodiment of the present utility model;

[0031] in:

[0032] 100-Sensitive ball assembly; 110-Snap-fit ​​part; 120-Pendulum-shaped part; 200-Support frame; 210-Lower frame plate; 220-Upper frame plate; 230-Frame connecting column; 240-Minimum value calibration block; 250-Maximum value calibration block; 300-Positioning assembly; 310-Product placement block; 320-Positioning cylinder; 330-Push rod connecting plate; 340-Positioning block; 350-Swinging linkage; 360-Push rod; 370-Cylinder mounting plate; 380-Mounting column; 400-Pressure... Assembly components; 410-Pressure-fitting cylinder; 420-Linkage mechanism; 430-Pressure-fitting block; 440-Fixed hinge support; 450-Sliding guide rail; 460-Limit block; 470-First limit screw; 480-Limit seat; 490-Second limit screw; 500-Product; 600-Pressure-fitting detection assembly; 610-Contact displacement sensor; 620-Position measuring block; 700-Product presence / absence detection assembly; 710-Diffuse reflection sensor; 720-Sensor mounting rod; 730-Sensor mounting base. Detailed Implementation

[0033] To make the objectives, advantages, and features of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are in a very simplified form and use non-precise proportions, intended only to facilitate and clearly illustrate the purpose of the embodiments of this utility model. Please refer to the accompanying drawings for a clearer understanding of the objectives, features, and advantages of this utility model. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes and to enable those skilled in the art to understand and read the content disclosed in the specification. They are not intended to limit the implementation conditions of this utility model. Any modifications to the structure, changes in proportions, or adjustments to the size, provided they produce the same or similar effects and achieve the same objectives as this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0034] As used in this invention, the singular forms “a,” “an,” and “the” include plural objects unless otherwise expressly indicated. As used in this invention, the term “or” is generally used to include “and / or” unless otherwise expressly indicated. As used in this invention, the term “a number” is generally used to include “at least one” unless otherwise expressly indicated. As used in this invention, the term “at least two” is generally used to include “two or more” unless otherwise expressly indicated. Furthermore, the terms “first,” “second,” and “third” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as “first,” “second,” or “third” may explicitly or implicitly include one or at least two of that feature.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0036] Please refer to Figures 3-4 This embodiment provides a pressing device, including:

[0037] Support frame 200;

[0038] Positioning component 300 is disposed on support frame 200 and used to support and limit product 500 to be pressed;

[0039] The pressing assembly 400 is mounted on the support frame 200 and is used to press the product 500. The pressing assembly 400 includes a pressing cylinder 410, two linkage mechanisms 420 and two pressing blocks 430. The two pressing blocks 430 are arranged opposite to each other on both sides of the positioning assembly 300 and are slidably connected to the support frame 200. The two ends of the pressing cylinder 410 are respectively connected to the two pressing blocks 430 through the two linkage mechanisms 420. The pressing cylinder 410 is used to drive the two pressing blocks 430 to move relative to each other to press the product 500.

[0040] In this embodiment, product 500 is, for example, a sensitive ball assembly. The pressing device provided in this embodiment is used to press the two snap-fit ​​parts of the sensitive ball assembly together to confine the pendulum-shaped part in the middle of the two snap-fit ​​parts. It should be noted that before the formal pressing, the two snap-fit ​​parts of the sensitive ball assembly have been initially fastened together, but have not been pressed into place. Therefore, it is necessary to use the pressing device provided in this embodiment to further press them into place.

[0041] For details, please refer to Figure 5 The supporting frame 200 includes a lower frame plate 210, an upper frame plate 220, and four frame connecting columns 230. The lower frame plate 210 and the upper frame plate 220 are connected to form a frame whole through the frame connecting columns 230 at the four corners.

[0042] Please refer to Figure 6 The positioning assembly 300 includes a product placement block 310, a positioning cylinder 320, a push rod connecting plate 330, and two symmetrically arranged positioning units. The positioning cylinder 320 and the product placement block 310 are both mounted on the support frame 200. The product placement block 310 has a groove for placing the product 500. The push rod connecting plate 330 is fixed to the telescopic end of the positioning cylinder 320. The positioning unit includes a positioning block 340, a swing connecting rod 350, and a push rod 360. One end of the push rod 360 passes vertically through the product placement block 310 and is connected to the push rod connecting plate 330. The other end is rotatably connected to the positioning block 340 through the swing connecting rod 350. The positioning cylinder 320 is used to drive the push rod connecting plate 330 to move vertically, thereby driving the two positioning blocks 340 to swing above the product 500 through the two swing connecting rods 350 to limit the vertical movement of the product 500.

[0043] In this embodiment, the positioning cylinder 320 is vertically mounted on the support frame 200. The telescopic end of the positioning cylinder 320 can extend and retract vertically, driving the push rod connecting plate 330 to rise and fall, thereby causing the two positioning blocks 340 to swing. For example, when the positioning cylinder 320 extends upward, it drives the push rod connecting plate 330 to rise, causing the two positioning blocks 340 to swing towards the product 500 and above the product 500 to vertically limit the product 500. When the product 500 needs to be placed before pressing or removed after pressing, the positioning cylinder 320 retracts downward, driving the push rod connecting plate 330 to fall, causing the two positioning blocks 340 to swing away from the product 500 to release the vertical limitation on the product 500.

[0044] It should be noted that when the positioning block 340 swings above the product 500, there is a gap between it and the product 500, rather than direct contact, so as not to affect the pressing of the product 500.

[0045] In this embodiment, the positioning component 300 also includes a cylinder mounting plate 370 and two mounting posts 380. The positioning cylinder 320 is mounted on the cylinder mounting plate 370. Both ends of the cylinder mounting plate 370 are respectively mounted on the support frame 200 through the two mounting posts 380. The mounting posts 380 and the support frame 200 can be connected by threads, and this utility model does not limit this.

[0046] Please refer to Figure 4 The pressing assembly 400 includes a pressing cylinder 410, two linkage mechanisms 420, and two pressing blocks 430. The two pressing blocks 430 are arranged opposite each other on both sides of the positioning assembly 300, and are slidably connected to the support frame 200. The two ends of the pressing cylinder 410 are respectively connected to the two pressing blocks 430 through the two linkage mechanisms 420. The pressing cylinder 410 is used to drive the two pressing blocks 430 to move relative to each other to press the product 500. It should be understood that this embodiment only uses one cylinder for pressing. That is, when the pressing cylinder 410 extends and retracts, its extension rod moves relative to or away from the cylinder body, thereby driving the two pressing blocks 430 to move relative to or away from each other. Although it is foreseeable that there will be a certain difference in the displacement of the two pressing blocks 430, since the two pressing blocks 430 move relative to each other, it has been found in actual operation that it will not affect the pressing accuracy of the product 500, as long as the two snap-fit ​​parts of the product 500 can be pressed into place. Of course, it is also possible to use two cylinders to drive the two pressing blocks 430 respectively, or to use a double-headed cylinder to drive the two pressing blocks 430. This utility model does not limit this.

[0047] Furthermore, the press-fit assembly 400 also includes two fixed hinge supports 440 mounted on the support frame 200. The two fixed hinge supports 440 respectively form the hinge nodes of two adjacent links in the two linkage mechanisms 420. Due to the presence of the fixed hinge supports 440, the press-fit cylinder 410 can be suspended on the support frame 200. In this embodiment, the linkage mechanism 420 is a three-bar linkage mechanism. For example, the linkage mechanism 420 includes a first link, a second link, and a third link connected in sequence. One end of the first link is rotatably connected to the press-fit cylinder 410, and the other end is rotatably connected to one end of the second link at the fixed hinge support 440. The other end of the second link is rotatably connected to one end of the third link, and the other end of the third link is rotatably connected to the press-fit block 430.

[0048] Preferably, the support frame 200 is equipped with a sliding guide rail 450, and the two pressing blocks 430 are slidably connected to the sliding guide rail 450 respectively. By setting the sliding guide rail 450, the relative movement of the two pressing blocks 430 can be guided, thereby improving the pressing accuracy of the product 500.

[0049] Preferably, the pressing assembly 400 further includes a first limiting unit and a second limiting unit. The first limiting unit is used to limit the forward limit position of each of the two pressing blocks 430 when they move relative to each other, and the second limiting unit is used to limit the backward limit position of each of the two pressing blocks 430 when they move away from each other. By setting the first limiting unit and the second limiting unit, the relative movement and back-to-back movement of the two pressing blocks 430 can be limited to ensure that the product 500 is pressed into place successfully.

[0050] Please refer to Figure 4 The first limiting unit includes a limiting block 460 and two first limiting screws 470. The limiting block 460 is mounted on the support frame 200 and located between the two first limiting screws 470. The two first limiting screws 470 are respectively mounted on two pressing blocks 430. When the pressing block 430 moves to the forward limit position, the first limiting screw 470 on it abuts against the limiting block 460.

[0051] Please continue to refer to Figure 4 The second limiting unit includes two limiting seats 480 and two second limiting screws 490. The two limiting seats 480 are respectively installed at both ends of the support frame 200 and located on the side of the two pressing blocks 430 away from the product 500. The two second limiting screws 490 are respectively installed on the two limiting seats 480. When the pressing block 430 moves to the backward limit position, it abuts against the corresponding second limiting screw 490.

[0052] Please refer to Figure 4 The pressing device includes a pressing detection component 600, which includes a contact displacement sensor 610 and a position measuring block 620 respectively installed on two pressing blocks 430. The contact displacement sensor 610 is used to detect the stop position of the position measuring block 620. The stop position of the position measuring block 620 reflects the stop position of the pressing block 430. Based on the stop position of the pressing block 430, it can be further determined whether the pressing of product 500 is qualified.

[0053] When considering a better solution, in order to facilitate the calibration of the contact displacement sensor 610 and further improve the pressing accuracy, a minimum value calibration block 240 and a maximum value calibration block 250 can be set on the support frame 200. Before the product 500 is formally pressed, the minimum value calibration block 240 and the maximum value calibration block 250 can be automatically picked up and placed at the placement position of the product 500 by an external mechanism such as a robot to calibrate the displacement sensor. For example, the minimum value calibration block 240 is placed on the product placement block 310, the positioning cylinder 320 extends to drive the positioning block 340 to limit the minimum value calibration block 240, the pressing cylinder 410 extends to perform the pressing action, the head of the contact displacement sensor 610 contacts the position measuring block 620, the value of the contact displacement sensor 610 is recorded when the pressing is completed and uploaded to the system, then the minimum value calibration block 240 is removed and the maximum value calibration block 250 is placed on the product placement block 310 to perform the same steps, and the value of the contact displacement sensor 610 is recorded when the pressing is completed and uploaded to the system.

[0054] During the formal press-fit production of product 500, product 500 to be press-fitted is placed on product placement block 310. Positioning cylinder 320 extends to drive positioning block 340 to limit product 500. Press-fitting cylinder 410 extends to perform press-fitting action. The head of contact displacement sensor 610 contacts position measuring block 620. The value of contact displacement sensor 610 when press-fitting is completed is recorded and compared with two values ​​during calibration. If this value is between the two calibrated values, the press-fitting is deemed qualified; otherwise, the press-fitting is deemed unqualified.

[0055] Preferably, the pressing device further includes a product presence / absence detection component 700, which is mounted on the support frame 200 and used to detect whether a product 500 is placed on the positioning component 300.

[0056] In this embodiment, please refer to Figure 7 The product presence / absence detection component 700 includes a diffuse reflection sensor 710, a sensor mounting rod 720, and a sensor mounting base 730. The sensor mounting base 730 is mounted on the support frame 200, and the diffuse reflection sensor 710 is mounted on the sensor mounting base 730 via the sensor mounting rod 720. The diffuse reflection sensor 710 is used to detect whether the product 500 or a calibration block is placed on the positioning component 300, and to give the entire pressing device a start signal.

[0057] In summary, this utility model provides a pressing device with a compact and reasonable structure, high pressing accuracy, and the ability to simultaneously press and test products on a single device. It is especially suitable for automated production lines and can greatly improve assembly efficiency.

[0058] Furthermore, it should be understood that although the present invention has been disclosed above with reference to preferred embodiments, these embodiments are not intended to limit the present invention. For any person skilled in the art, many possible variations and modifications can be made to the present invention's technical solutions using the disclosed technical content, or equivalent embodiments can be modified accordingly, without departing from the scope of the present invention's technical solutions. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention's technical solutions, shall still fall within the protection scope of the present invention's technical solutions.

Claims

1. A pressing device, characterized in that, include: Supporting framework; A positioning component is disposed on the support frame and is used to support and limit the product to be pressed; A pressing assembly is disposed on the support frame and used to press the product. The pressing assembly includes a pressing cylinder, two linkage mechanisms, and two pressing blocks. The two pressing blocks are disposed opposite to each other on both sides of the positioning assembly, and the pressing blocks are slidably connected to the support frame. The two ends of the pressing cylinder are respectively connected to the two pressing blocks through the two linkage mechanisms. The pressing cylinder is used to drive the two pressing blocks to move relative to each other to press the product. The positioning assembly includes a product placement block, a positioning cylinder, a push rod connecting plate, and two symmetrically arranged positioning units. The positioning cylinder and the product placement block are both mounted on the support frame. The product placement block has a groove for placing the product. The push rod connecting plate is fixed to the telescopic end of the positioning cylinder. The positioning unit includes a positioning block, a swing linkage, and a push rod. One end of the push rod passes vertically through the product placement block and is connected to the push rod connecting plate. The other end is rotatably connected to the positioning block through the swing linkage. The positioning cylinder drives the push rod connecting plate to move vertically, thereby causing the two positioning blocks to swing above the product through the two swing linkages to vertically limit the product.

2. The pressing device according to claim 1, characterized in that, The positioning assembly also includes a cylinder mounting plate and two mounting posts. The positioning cylinder is mounted on the cylinder mounting plate, and both ends of the cylinder mounting plate are respectively mounted on the support frame via the two mounting posts.

3. The pressing device according to claim 1, characterized in that, The press-fit assembly also includes two fixed hinge supports installed on the support frame, and the two fixed hinge supports respectively form the hinge nodes of two adjacent links in the two linkage mechanisms.

4. The pressing device according to claim 1, characterized in that, The support frame is equipped with a sliding guide rail, and the two pressing blocks are slidably connected to the sliding guide rail respectively.

5. The pressing device according to claim 1, characterized in that, The pressing assembly further includes a first limiting unit and a second limiting unit. The first limiting unit is used to limit the forward limit position of each of the two pressing blocks when they move relative to each other, and the second limiting unit is used to limit the backward limit position of each of the two pressing blocks when they move in opposite directions.

6. The pressing device according to claim 5, characterized in that, The first limiting unit includes a limiting block and two first limiting screws. The limiting block is installed on the support frame and located between the two first limiting screws. The two first limiting screws are respectively installed on the two pressing blocks. When the pressing block moves to the forward limit position, the corresponding first limiting screw abuts against the limiting block.

7. The pressing device according to claim 5, characterized in that, The second limiting unit includes two limiting seats and two second limiting screws. The two limiting seats are respectively installed at both ends of the support frame and located on the side of the two pressing blocks away from the product. The two second limiting screws are respectively installed on the two limiting seats. When the pressing block moves to the backward limit position, it abuts against the corresponding second limiting screw.

8. The pressing device according to claim 1, characterized in that, The pressing device also includes a product presence detection component, which is installed on the support frame and used to detect whether the product is placed on the positioning component.

9. The pressing device according to claim 1, characterized in that, The pressing device includes a pressing detection component, which includes a contact displacement sensor and a position measuring block respectively installed on the two pressing blocks. The contact displacement sensor is used to detect the position of the position measuring block.

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