A press and rectangular product processing system

Abstract

The application discloses a press machine and a rectangular product processing system, which comprises an upper die mounting plate, a lower die mounting plate and a first driving mechanism for driving the upper die mounting plate to move towards or away from the lower die mounting plate to realize a riveting operation; the upper die mounting plate is provided with an upper mounting groove for mounting an upper die and an upper buckle structure arranged at the groove edge of the upper mounting groove and used for fixing the upper die, and the upper mounting groove is provided with an upper positioning pin used for realizing positioning of the upper die; the lower die mounting plate is provided with a lower mounting groove for mounting a lower die and a lower buckle structure arranged at the groove edge of the lower mounting groove and used for fixing the lower die, and the lower mounting groove is provided with a lower positioning pin used for realizing positioning of the lower die. The die replacement operation is simple.

Description

Technical Field

[0001] This invention belongs to the field of riveting technology, specifically relating to a press and a rectangular product processing system. Background Technology

[0002] Rectangular products require riveting the upper and lower outer shells together using a punch press. Existing riveting equipment has a complex mold limiting structure, and changing the mold during use requires a significant amount of time for stroke adjustment. Summary of the Invention

[0003] To address the problem of inconvenient mold replacement in existing riveting processes, this invention provides a press and a rectangular product processing system, which features simple mold replacement operation.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] The first aspect of the present invention provides a press, including an upper die mounting plate, a lower die mounting plate, and a first driving mechanism for driving the upper die mounting plate to move toward or away from the lower die mounting plate to realize a riveting operation;

[0006] The upper mold mounting plate is provided with an upper mounting groove for mounting the upper mold and an upper snap-fit ​​structure provided on the side of the upper mounting groove for fixing the upper mold. An upper positioning pin is provided in the upper mounting groove for positioning the upper mold.

[0007] The lower mold mounting plate is provided with a lower mounting groove for mounting the lower mold and a lower snap-fit ​​structure provided on the side of the lower mounting groove for fixing the lower mold. A lower positioning pin is provided in the lower mounting groove for positioning the lower mold.

[0008] In one possible design, the first drive mechanism includes a first slider, a drive member for driving the first slider to move the upper mold mounting plate toward or away from the lower mold mounting plate, and a booster arm for enhancing the driving force of the first slider.

[0009] In one possible design, the lever arm includes a fulcrum rotatably fixed on the frame, a power arm and a resistance arm respectively placed at both ends of the fulcrum, and the power arm is provided with an arc-shaped sliding groove.

[0010] The upper mold mounting plate is provided with a waist-shaped hole;

[0011] The first slider is provided with a drive follower placed in the groove;

[0012] The resistance arm is provided with a driven follower placed inside the waist-shaped hole.

[0013] In one possible design, the upper snap-fit ​​structure includes an upper mold hook and an upper mold torsion spring;

[0014] The upper mold hook has a hook part, a rotating shaft, and an operating part that controls the hook part to rotate along the rotating shaft so that the hook part disengages from or engages with the upper mold slot.

[0015] The upper mold torsion spring is placed on the rotating shaft of the upper mold hook to drive the hook to engage with the slot of the upper mold.

[0016] In one possible design, a pressure detection device for detecting pressure is installed below the lower mold mounting plate, the lower mold mounting plate is disposed on the first guide post, and the first guide post is provided with a spring that pushes the lower mold mounting plate away from the pressure detection device.

[0017] In one possible design, the system also includes a guide rail on the frame, a second slider for mounting the lower mold mounting plate, and a second drive mechanism for driving the second slider to move along the guide rail.

[0018] A second aspect of the present invention provides a rectangular product processing system, comprising a press as described in the first aspect and any possible thereof, an upper mold installed in the upper mounting slot, and a lower mold installed in the lower mounting slot;

[0019] The upper mold is provided with a first slot adapted to the upper buckle structure and a pin hole adapted to the upper positioning pin;

[0020] The lower mold is provided with a second slot adapted to the lower buckle structure and a pin hole adapted to the lower positioning pin.

[0021] Compared with the prior art, the present invention has at least the following advantages and beneficial effects:

[0022] 1. The mold of the present invention is positioned by positioning pins and fixed by a snap-fit ​​structure. The snap-fit ​​structure enables quick assembly and disassembly of the mold.

[0023] 2. The driving mechanism of the mold in this invention adopts a lever arm to multiply the force, achieve high pressure output, and improve the processing quality of the product. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a front view of the press of the present invention with a mold installed;

[0026] Figure 2 This is a perspective view of the press of the present invention with a mold installed.

[0027] Figure 3 This is a top view of the press of the present invention;

[0028] Figure 4 for Figure 3 A mid-AA view shows the press equipped with a mold.

[0029] Figure 5 for Figure 3 View AA shows the press without a mold installed.

[0030] Figure 6 for Figure 5 Enlarged view of point A in the middle. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the 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 invention without inventive effort are within the scope of protection of the invention.

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0034] It should be noted that similar labels 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.

[0035] In the description of this invention, 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, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this invention 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, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 invention based on the specific circumstances.

[0037] like Figures 1 to 6 As shown, this invention discloses a press for performing riveting, pressing, and assembly operations on rectangular products. The press includes an upper die mounting plate 1, a lower die mounting plate 2, and a first drive mechanism for driving the upper die mounting plate 1 to move closer to or further away from the lower die mounting plate 2 to perform the riveting operation.

[0038] To facilitate quick assembly and disassembly of the molds without tools, the upper mold mounting plate 1 is provided with an upper mounting groove 11 for mounting the upper mold 81 and an upper snap-fit ​​structure provided on the side of the upper mounting groove 11 for fixing the upper mold. An upper positioning pin 12 is provided in the upper mounting groove for positioning the upper mold. The lower mold mounting plate 2 is provided with a lower mounting groove 21 for mounting the lower mold 82 and a lower snap-fit ​​structure provided on the side of the lower mounting groove 21 for fixing the lower mold. A lower positioning pin 22 is provided in the lower mounting groove for positioning the lower mold.

[0039] The upper locating pin 12 and the lower locating pin 22 respectively position the upper and lower molds, achieving X-axis positioning of the molds. Correspondingly, the upper and lower molds are provided with pin holes corresponding to the upper locating pin 12 and the lower locating pin 22, respectively. For example, Figure 4 As shown, the upper positioning pin 12 and the lower positioning pin 22 are respectively set at the center of the upper mounting groove and the lower mounting groove 21. Of course, they can also be set at any other position.

[0040] The upper and lower latching structures respectively clamp the upper and lower molds, achieving Y-axis positioning of the molds. Specifically, for example... Figure 5 , 6 As shown, the upper and lower snap-fit ​​structures are implemented using hooks and torsion springs. Specifically, the upper snap-fit ​​structure includes an upper mold hook 51 and an upper mold torsion spring; the upper mold hook has a hook portion, a rotating shaft, and an operating part that controls the hook portion to rotate along the rotating shaft, causing the hook portion to disengage from or engage with the upper mold slot; the upper mold torsion spring is placed on the rotating shaft of the upper mold hook to drive the hook portion to engage with the upper mold slot. The lower snap-fit ​​structure can adopt the same structure as the upper snap-fit ​​structure, including a lower mold hook 52 and a lower mold torsion spring; the lower mold hook 52 has a hook portion, a rotating shaft, and an operating part that controls the hook portion to rotate along the rotating shaft, causing the hook portion to disengage from or engage with the upper mold slot; the lower mold torsion spring is placed on the rotating shaft of the lower mold hook to drive the hook portion to engage with the lower mold slot. With the above structure, the mold can be fixed in the Y direction by moving the operating part and then releasing it. The structure is simple, easy to operate, and allows for quick assembly and disassembly.

[0041] To avoid placing the mold in the wrong orientation, such as Figure 6 As shown, both the upper mounting groove 11 and the lower mounting groove 21 are provided with pins 7 to prevent the mold from being installed in reverse. Correspondingly, the upper mold and the lower mold are provided with limiting grooves corresponding to the positions of the pins. The pins 7 can be placed on one side of the center of the upper mounting groove 11 and the lower mounting groove 21.

[0042] The first driving mechanism utilizes the lever principle to amplify the driving force. Specifically, the first driving mechanism includes a first slider 31, a driving component for driving the first slider 31 to move, thereby causing the upper mold mounting plate 1 to move towards or away from the lower mold mounting plate 2, and a lever arm 32 for enhancing the driving force of the first slider 31. The driving component can employ a screw drive structure or a cylinder drive structure; to control the movement accuracy, a screw drive structure is preferred. Figure 1 , 2Figure 4 illustrates a drive example using a lead screw transmission structure, specifically a motor 38 and a lead screw 39. The lever arm 32 includes a rotatable fulcrum fixed to the frame 9, a power arm and a resistance arm positioned at opposite ends of the fulcrum, forming a lever. The power arm has an arc-shaped groove 321; the upper mold mounting plate 1 has an oblong hole 13; the first slider 31 has a drive follower 33 positioned within the groove; and the resistance arm has a driven follower 34 positioned within the oblong hole. The drive follower 33 and the driven follower 34 can be implemented using cams. To ensure smooth vertical movement of the upper mold mounting plate 1, the lever arms 32 can be symmetrically positioned on both sides of the lead screw, enabling multi-point drive of the upper mold mounting plate 1. Furthermore, second guide posts can be provided on both sides of the upper mold mounting plate 1 to guide and limit its movement.

[0043] By employing the first drive mechanism in any of the above situations, the driving force of the motor or cylinder can be multiplied by adjusting the length of the power arm and resistance arm on the lever arm, thereby enhancing the processing effects of riveting, pressing, and assembly.

[0044] A pressure detection device 61 for detecting pressure is installed below the lower mold mounting plate 2. The lower mold mounting plate 2 is disposed on the first guide post 62, and a spring 63 is provided on the first guide post 62 to push the lower mold mounting plate 2 away from the pressure detection device.

[0045] During normal operation, the lower mold mounting plate 2 is positioned below the upper mold mounting plate 1. The lower mold mounting plate 2 can be fixedly mounted on the frame; however, this structure presents a problem of inconvenience in installing the lower mold and poses certain safety hazards. To address this, in addition to the aforementioned structure, a guide rail 41 is provided on the frame, a second slider 42 for mounting the lower mold mounting plate 2, and a second drive mechanism 43 for driving the second slider 42 to move along the guide rail 41. The second drive mechanism 43, like the first drive mechanism, can be implemented using a screw motor structure or a cylinder. Utilizing the structure of the guide rail, slider, and drive mechanism, the position of the lower mold mounting plate 2 can be adjusted, facilitating mold installation and eliminating safety hazards. In this case, the first guide post 62 is positioned on the second slider 42, and a spring 63 is fitted onto the second slider 42. Under the action of the spring 63, a certain gap exists between the lower mold mounting plate 2 and the pressure detection device.

[0046] The second aspect of this invention discloses a rectangular product processing system, such as... Figure 1 , 2As shown, the device includes a press as described in any of the structures in the first aspect, an upper mold 81 installed in the upper mounting groove 11, and a lower mold 82 installed in the lower mounting groove 21. The upper mold has a first slot adapted to the upper snap-fit ​​structure and a pin hole adapted to the upper positioning pin 12. The lower mold has a second slot adapted to the lower snap-fit ​​structure and a pin hole adapted to the lower positioning pin 22. The control terminals of the first drive mechanism, the second drive mechanism, and the signal output terminal of the pressure detection device are connected to a controller, which can be implemented using a PLC, a microcontroller, and peripheral components such as a power supply and a display.

[0047] The upper and lower molds can be riveting molds, pressing molds, assembly molds, etc., to realize riveting, pressing, assembly, and other processes. During operation, the controller controls the second drive mechanism to remove the lower mold mounting plate 2 and install the upper and lower molds. When installing the upper and lower molds, first move the hook away from the mounting slot, and then release the hook after positioning the mold using the locating pin to fix the mold. The installation is quick and convenient. After the upper and lower molds are installed, the controller controls the second drive mechanism to reset the lower mold mounting plate 2 and then controls the first drive mechanism to move the upper mold mounting plate 1 downward. After the upper mold mounting plate 1 moves downward, the upper mold first contacts the lower mold, and the upper mold mounting plate 1 continues to move downward. The spring continues to be compressed, and the upper mold mounting plate 1 continues to move downward, and the riveting head completes the riveting. When the upper mold mounting plate 1 continues to move downward, the lower mold mounting plate contacts the pressure detection device. By monitoring the data of the pressure detection device, it can be found that when the riveting is completed, the output value of the pressure detection device will suddenly spike, indicating that there is no room for product deformation. This is also the final position of the riveting. At this point, the first drive mechanism can be controlled to move the upper mold mounting plate 1 upward.

[0048] With the above structure, the spring can maintain the distance between the lower mold mounting plate and the pressure detection device when not being processed, and during processing, it can ensure that there is no gap between the upper and lower molds, thus improving the processing quality.

[0049] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A press machine comprising an upper die mounting plate (1), a lower die mounting plate (2) and a first driving mechanism for driving the upper die mounting plate (1) to move towards or away from the lower die mounting plate (2) to realize a riveting operation, characterized in that: the upper die mounting plate (1) is provided with an upper mounting groove (11) for mounting an upper die and an upper buckle structure arranged at the groove edge of the upper mounting groove (11) for fixing the upper die, and the upper mounting groove is provided with an upper positioning pin (12) for realizing positioning of the upper die; the lower die mounting plate (2) is provided with a lower mounting groove (21) for mounting a lower die and a lower buckle structure arranged at the groove edge of the lower mounting groove (21) for fixing the lower die, and the lower mounting groove is provided with a lower positioning pin (22) for realizing positioning of the lower die; the first driving mechanism comprises a first sliding block (31), a driving member for driving the first sliding block (31) to move to drive the upper die mounting plate (1) to move towards or away from the lower die mounting plate (2), and a force amplifying arm (32) for amplifying the driving force of the first sliding block (31); the force amplifying arm (32) comprises a fulcrum rotatably fixed on a machine frame, a power arm and a resistance arm respectively arranged at both ends of the fulcrum, and the power arm is provided with an arc-shaped sliding groove (321); the upper die mounting plate (1) is provided with a waist-shaped hole (13); the first sliding block (31) is provided with a driving follower (33) arranged in the sliding groove; the resistance arm is provided with a driven follower (34) arranged in the waist-shaped hole; the upper buckle structure comprises an upper die hook (51) and an upper die torsional spring; the upper die hook has a hook portion, a rotating shaft and an operating portion for controlling the hook portion to rotate along the rotating shaft to make the hook portion disengage from or engage into a clamping groove of the upper die; the upper die torsional spring is arranged on the rotating shaft of the upper die hook to drive the hook portion to engage into the clamping groove of the upper die; a pressure detecting device (61) for detecting pressure is arranged below the lower die mounting plate (2), the lower die mounting plate (2) is arranged on a first guide column (62), and the first guide column (62) is provided with a spring (63) for pushing the lower die mounting plate (2) away from the pressure detecting device; a guide rail (41) arranged on the machine frame, a second sliding block (42) for mounting the lower die mounting plate (2) and a second driving mechanism (43) for driving the second sliding block (42) to move along the guide rail (41) are further included; the upper mounting groove (11) and the lower mounting groove (21) are each provided with a pin for preventing reverse installation of the die; a press machine according to any one of claims 1 to 4, an upper die (81) mounted in the upper mounting groove (11) and a lower die (82) mounted in the lower mounting groove (21) are included; the upper die is provided with a first clamping groove matched with the upper buckle structure and a pin hole matched with the upper positioning pin (12); and the lower die is provided with a second clamping groove matched with the lower buckle structure and a pin hole matched with the lower positioning pin (22). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2. A press according to claim 1, characterized in that: ​ 3. A press according to claim 1, characterized in that: ​ 4. A press according to claim 1, characterized in that: ​ 5. A rectangular product processing system characterized by: ​ ​ ​

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