Press-fit assembly jig

Abstract

The utility model discloses a press-fit assembly jig which comprises an upper template and a lower template which are connected through a guide mechanism. An upper workpiece mounting position is arranged on the upper template, and a positioning and clamping mechanism is arranged on the upper workpiece mounting position; a lower workpiece mounting groove corresponding to the upper workpiece mounting position is formed in the lower die plate, and a side edge positioning mechanism is arranged in the lower workpiece mounting groove. The press-fit device is ingenious in structure and convenient to use, the corresponding precision of the upper workpiece installation position and the lower workpiece installation position in the press-fit process can be guaranteed through the guide mechanism, then, the positioning clamping mechanism on the upper workpiece installation position can achieve one-key press-fit and separation with an upper workpiece, meanwhile, the positioning effect can be achieved, and finally, the press-fit precision of the upper workpiece installation position and the lower workpiece installation position is improved. The side edge positioning mechanism in the lower workpiece mounting groove can realize convenient mounting and positioning of the lower workpiece, and the mechanisms act together, so that the pressing precision of the upper workpiece and the lower workpiece and the product quality can be ensured.

Description

Technical Field

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

[0002] Some products consisting of upper and lower workpieces require bonding and pressing during assembly. Existing pressing devices typically involve placing the upper and lower workpieces into their respective mounting positions on the upper and lower templates, then pressing the upper template down onto the lower template to complete the assembly. This process involves steps such as loading, positioning, pressing, unloading, and resetting, which is cumbersome and inefficient. Furthermore, workpiece positioning often requires manual intervention, which is time-consuming and cannot guarantee pressing accuracy, affecting product quality. Summary of the Invention

[0003] To address the aforementioned problems, this utility model provides a high-precision and easy-to-use pressing and assembly fixture, specifically employing the following technical solution:

[0004] The pressing assembly fixture of this utility model includes an upper template and a lower template, which are connected by a guide mechanism; the upper template is provided with an upper workpiece mounting position, and the upper workpiece mounting position is provided with a positioning and clamping mechanism; the lower template is provided with a lower workpiece mounting groove corresponding to the upper workpiece mounting position, and a side positioning mechanism is provided in the lower workpiece mounting groove.

[0005] The upper workpiece mounting position is adapted to the upper workpiece with a support leg on the top, and a clip is provided on the outer side of the support leg.

[0006] The positioning and clamping mechanism includes an insertion hole on the upper template. A first limiting member, a sliding member, and a second limiting member are sequentially arranged on the rear side of the insertion hole. A gripper is provided on the front side of the sliding member, and the rear side of the sliding member is connected to the second limiting member through a compression spring. The front end of the gripper is provided with a first inclined surface at the bottom and a second inclined surface at the top. The first inclined surface slopes forward from bottom to top, and the second inclined surface slopes backward from bottom to top. The distance between the inner side of each gripper and the inner side of the corresponding insertion hole is equal to the width of the support leg.

[0007] The upper workpiece is provided with four legs arranged in a rectangular dot matrix, and the insertion holes are provided correspondingly to them. The first limiting member, the sliding member and the second limiting member arranged in the same row are connected to each other to form an integral unit.

[0008] The top of the upper workpiece is also provided with a positioning post, and the upper template is provided with positioning holes corresponding to the positioning post.

[0009] The upper workpiece mounting positions are arranged in groups, and each group has multiple upper workpiece mounting positions arranged from front to back. The upper workpiece mounting positions in the same group share a set of demolding mechanisms.

[0010] The demolding mechanism includes a pull shaft positioned above the upper workpiece mounting position. Both ends of the pull shaft pass through mounting bases connected to the upper template. A push block for pushing the sliding component backward is provided in the middle of the pull shaft, and an operating handle is provided at the end of the pull shaft.

[0011] The side positioning mechanism includes an elastic clip disposed on the inner edge of the lower workpiece mounting groove.

[0012] The upper template is equipped with an electric cylinder that drives its up and down movement. The guiding mechanism is a linear bearing that connects the upper template and the lower template, and multiple linear bearings are provided.

[0013] The pressing assembly fixture provided by this utility model ensures the corresponding accuracy of the upper and lower workpiece mounting positions during the pressing process through a guiding mechanism. Secondly, the positioning and clamping mechanism on the upper workpiece mounting position enables one-click pressing and separation with the upper workpiece, while also serving a positioning function. Thirdly, the side positioning mechanism in the lower workpiece mounting slot facilitates convenient installation and positioning of the lower workpiece. The combined effect of these mechanisms ensures the pressing accuracy of the upper and lower workpieces and the product quality. This utility model has a clever structure, is easy to use, saves time and effort, eliminates the need for manual workpiece positioning, has high work efficiency, and possesses high pressing repeatability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 yes Figure 1 A schematic diagram of the positioning and clamping mechanism.

[0016] Figure 3 yes Figure 2 A schematic diagram of its breakdown.

[0017] Figure 4 yes Figure 2 A schematic diagram of the connection structure between the middle positioning clamping mechanism and the upper workpiece support leg.

[0018] Figure 5 yes Figure 1 A schematic diagram of the demolding mechanism.

[0019] Figure 6 yes Figure 1 A partial structural diagram of the lower middle template. Detailed Implementation

[0020] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0021] like Figure 1-6 As shown, this utility model is suitable for an upper workpiece with a support leg M1 at the top and a bracket M2 on the outer surface of the support leg M1, the outer contours of the upper workpiece and the lower workpiece being consistent. In this embodiment, each upper workpiece has four support legs M1 arranged in a rectangular dot matrix at its top, and each support leg M1 has a bracket M2. The four brackets M2 are all located on the outer surface of the support leg M1 and are symmetrically arranged along the longitudinal center line of the support leg M1. Furthermore, to make the positioning more accurate, a positioning post M3 is also provided at the top of each upper workpiece.

[0022] The pressing assembly fixture of this utility model includes an upper template 1 and a lower template 2, which are connected by a guiding mechanism. In this embodiment, the guiding mechanism uses four linear bearings 3 connected to the upper template 1 and the lower template 2, arranged in a rectangular shape on the mounting sides. An electric cylinder 4 and an electric control box connected to it are mounted on the upper template 1 to control the working state of the electric cylinder 4. Through the cooperation of the electric cylinder 4 and the linear bearings 3, the vertical lifting and lowering movement of the upper template 1 can be precisely controlled, thereby ensuring the alignment accuracy of the upper template 1 and the lower template 2.

[0023] To improve work efficiency, multiple sets of upper workpiece mounting positions can be set on the upper template 1. Each set of upper workpiece mounting positions has multiple positions arranged from front to back, thereby completing the pressing operation of multiple upper and lower workpieces at one time. In this embodiment, three upper workpiece mounting positions are set on the working side of the upper template 1, which are arranged in a group from front to back. Each workpiece mounting position is equipped with four sets of positioning and clamping mechanisms. Each set of positioning and clamping mechanisms includes an insertion hole 51, a first limiting member 52, a sliding member 53, and a second limiting member 54.

[0024] Specifically, each insertion hole 51 corresponds to the position of the support leg M1 of the upper workpiece and is a rectangular through hole opened on the upper template 1. Its width needs to allow the support leg M1 and the card holder M2 to pass through, and its length is usually equivalent to the length of the support leg M1 (i.e., slightly longer than the support leg M1 so that it can pass through without obstruction). A first limiting member 52, a sliding member 53, and a second limiting member 54 are arranged sequentially on the rear side of the insertion hole 51. In this embodiment, the first limiting member 52, the sliding member 53, and the second limiting member 54 arranged in the same row are connected to form an integral unit. The first limiting member 52 is a T-shaped boss, with its center located between two insertion holes 51 in the same row. The two side wings are located at the rear edge of the two insertion holes 51, and the length of each wing is equal to or less than the width of the corresponding support leg M1. The two sides of the second limiting member 54 are right-angled structures extending forward at the top. They are spaced apart from the first limiting member 52. The thickness of the sliding member 53 is less than the distance between the two, so that it can move back and forth. The top of the sliding member 53 slidably connects with the top of the second limiting member 54, and linear guiding mechanisms such as slide rails and grooves can be provided on the contact surface between the two. A gripper 55 is provided at each of the front ends of the sliding member 53. The gripper 55 is located outside the wing plate of the first limiting member 52. When the sliding member 53 connects with the first limiting member 52, the gripper 55 is located above the opening of the insertion hole 51. In this embodiment, the distance between the inner side of each gripper 55 and the inner side of the corresponding insertion hole 51 is required to be equal to the width of the corresponding support leg M1. That is, when the support leg M1 enters the insertion hole 51, the two grippers 55 in the same row can form a side clamping and positioning of the two support legs M1.

[0025] To enable the upper workpiece to automatically lock with the upper template 1, a first inclined surface a (lower) and a second inclined surface b (upper) are provided at the front end of the gripper 55. The first inclined surface a and the second inclined surface b are continuously arranged, with the first inclined surface a tilting forward from bottom to top and the second inclined surface b tilting backward from bottom to top. Simultaneously, a compression spring 56 connected to the second limiting member 54 is installed at a position corresponding to the gripper 55 on the rear side of the sliding member 53. As the support leg M1 moves upward relative to the insertion hole 51, the holder M2 first contacts the first inclined surface a, causing the sliding member 53 to move backward. At this time, the compression spring 56 is compressed and deformed. As the support leg M1 continues to move upward, when the holder M2 contacts the second inclined surface b, due to the reset pressure of the compression spring 56, the sliding member 53 moves forward, causing the holder M2 to engage with the top surface of the gripper 55. The gripper 55 then provides a supporting force to the upper workpiece. The dual functions of the gripper 55—limiting and supporting—enable the automatic locking of the upper workpiece with the upper template 1.

[0026] Accordingly, in order to separate the upper workpiece from the upper template 1, a demolding mechanism is provided above the upper workpiece mounting position. In this embodiment, the three upper workpiece mounting positions share a demolding mechanism, which includes mounting seats 61 located at the front and rear ends of the upper template 1. Two pull shafts 62 are arranged side by side on the mounting seats 61. A push block 63 for pushing the sliding member 53 to move backward is installed in the middle of the pull shaft 62. An operating handle 64 is installed at the rear end of the pull shaft 62. When demolding is required, the pull shaft 62 is moved backward by operating the handle 64. The push block 63 on it moves backward, pushing the sliding member 53 backward. The gripper 55 on it moves backward, thereby disengaging the clip M2 from the gripper 55, thus achieving the separation of the upper workpiece from the upper template 1.

[0027] Furthermore, a positioning post M3 is provided on the top of the upper workpiece, and a corresponding positioning hole 57 is provided on the upper template 1 for pre-positioning of the upper workpiece and the upper template 1.

[0028] The lower template 2 has multiple lower workpiece mounting slots 21 corresponding to the upper workpiece mounting position, and each lower workpiece mounting slot 21 is equipped with a side positioning mechanism. In this embodiment, the lower workpiece mounting slot 21 is a tray fixed on the lower template 2, and the side positioning mechanism is an elastic clip 22 installed on the inner edge of the lower workpiece mounting slot 21, such as a stainless steel positioning elastic deformation sheet. It is easy to operate; simply clip the lower workpiece into the lower workpiece mounting slot 21 to achieve automatic positioning of the lower workpiece, making the operation very simple. It should be noted that the elastic clip 22 is usually installed near the bottom of the lower workpiece mounting slot 21.

[0029] The working steps of this utility model during press-fit assembly are as follows:

[0030] The first step is to place the upper workpiece in the lower workpiece mounting slot 21, so that the upper template 1 is lowered until it contacts the upper workpiece, and the upper workpiece and the upper template 1 are automatically positioned and locked together under the action of the positioning and clamping mechanism.

[0031] The second step is to raise the upper template 1, and the upper workpiece will rise to the starting position accordingly.

[0032] The third step is to place the lower workpiece in the lower workpiece mounting slot 21 and achieve automatic positioning of the lower workpiece through the side positioning mechanism.

[0033] The fourth step is to lower the upper template 1 again until the upper and lower workpieces are pressed tightly together.

[0034] Fifth step: The demolding mechanism releases the upper template 1 from locking the upper workpiece through the positioning and clamping mechanism.

[0035] The sixth step is to raise the upper template 1 again, separating it from the upper workpiece, thus completing the pressing operation.

[0036] Compared with the prior art, the advantages of this utility model are as follows:

[0037] 1) It can realize automatic workpiece positioning, is easy to operate, and can ensure high pressing repeatability.

[0038] 2) It can achieve one-click pressing and one-click separation of workpieces, which is simple and labor-saving to operate;

[0039] 3) The tie rod device enables rapid separation of the upper workpiece from the fixture;

[0040] 4) Multiple workpieces can be pressed at the same time each time, without the need for frequent pressing and resetting, which is highly efficient.

[0041] It should be noted that in the description of this utility model, terms such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", and "outer" indicating orientation or positional relationship are 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.

Claims

1. A pressing assembly fixture, characterized in that: It includes an upper template and a lower template, which are connected by a guide mechanism; the upper template is provided with an upper workpiece mounting position, and the upper workpiece mounting position is provided with a positioning and clamping mechanism; the lower template is provided with a lower workpiece mounting groove corresponding to the upper workpiece mounting position, and a side positioning mechanism is provided in the lower workpiece mounting groove.

2. The pressing assembly fixture according to claim 1, characterized in that: The upper workpiece mounting position is adapted to the upper workpiece with a support leg on the top, and a clip is provided on the outer side of the support leg.

3. The pressing assembly fixture according to claim 2, characterized in that: The positioning and clamping mechanism includes an insertion hole on the upper template. A first limiting member, a sliding member, and a second limiting member are sequentially arranged on the rear side of the insertion hole. A gripper is provided on the front side of the sliding member, and the rear side of the sliding member is connected to the second limiting member through a compression spring. The front end of the gripper is provided with a first inclined surface at the bottom and a second inclined surface at the top. The first inclined surface slopes forward from bottom to top, and the second inclined surface slopes backward from bottom to top. The distance between the inner side of each gripper and the inner side of the corresponding insertion hole is equal to the width of the support leg.

4. The pressing assembly fixture according to claim 3, characterized in that: The upper workpiece is provided with four legs arranged in a rectangular dot matrix, and the insertion holes are provided correspondingly to them. The first limiting member, the sliding member and the second limiting member arranged in the same row are connected to each other to form an integral unit.

5. The pressing assembly fixture according to claim 1, characterized in that: The top of the upper workpiece is also provided with a positioning post, and the upper template is provided with positioning holes corresponding to the positioning post.

6. The pressing assembly fixture according to claim 1, characterized in that: The upper workpiece mounting positions are arranged in groups, and each group has multiple upper workpiece mounting positions arranged from front to back. The upper workpiece mounting positions in the same group share a set of demolding mechanism.

7. The pressing assembly fixture according to claim 1, characterized in that: The demolding mechanism includes a pull shaft positioned above the upper workpiece mounting position. Both ends of the pull shaft pass through mounting bases connected to the upper template. A push block for pushing the sliding component backward is provided in the middle of the pull shaft, and an operating handle is provided at the end of the pull shaft.

8. The pressing assembly fixture according to claim 1, characterized in that: The side positioning mechanism includes an elastic clip disposed on the inner edge of the lower workpiece mounting groove.

9. The pressing assembly fixture according to claim 1, characterized in that: The upper template is equipped with an electric cylinder that drives its up and down movement. The guiding mechanism is a linear bearing that connects the upper template and the lower template, and multiple linear bearings are provided.

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