Die set steady-state multi-station sheet metal part machining die

Abstract

The application discloses a kind of die steady multi-station sheet metal part machining molds, including processing mold body, processing mold body has multiple sheet metal part processing stations;It also includes die steady detection device;Die steady detection device includes movable detection part and fixed bearing part;The side surface of the upper base of movable part is hingedly connected with swing lever, and elastic detection part is connected between swing lever and upper base, and contact rolling part is installed on swing lever;The lower base of fixed bearing part is provided with bearing platform corresponding to contact rolling part;In die steady state, contact rolling part touches pressure bearing platform, drives swing lever to move upward, and in the event of die steady state, contact rolling part touches pressure bearing platform and rolls due to inclination when rolling.In the elastic change of elastic detection part caused by the swing of swing lever of die steady detection device when die and the rolling state of contact rolling part of pressure bearing platform, further judge die steady state, improve die steady and processing quality.

Description

Technical Field

[0001] This invention belongs to the field of processing mold technology, and in particular relates to a mold for processing sheet metal parts in a stable multi-station mold with mold closing. Background Technology

[0002] Molds are commonly used mechanical equipment in sheet metal workpiece processing. Based on the number of processing stations, molds can be broadly classified into single-station molds with one station and multi-station molds with two or more stations. Multi-station molds are also known as multi-station common molds. In multi-station molds, because the processing is completed simultaneously in a single mold closing process, the stress points are distributed across various stations, resulting in uneven stress distribution. Over long-term production, this can cause some structural components at certain stations to loosen, leading to misalignment and deviation. This, in turn, affects the mold's closing stability, ultimately resulting in processing instability and a decline in processing quality. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides a multi-station sheet metal part processing mold with stable mold closing state. By measuring the elastic change of the elastic detection part caused by the swing of the swing rod of the mold closing stability detection device during mold closing and the rolling state of the contact rolling part of the pressure bearing platform, the mold closing stability is determined, thereby improving the mold closing stability and processing quality.

[0004] Technical Solution: To achieve the above objectives, the present invention provides a multi-station sheet metal part processing mold with a closed-mold stable state, comprising a processing mold body having multiple sheet metal part processing stations arranged side-by-side between an upper mold base and a lower mold base, with at least two adjacent sheet metal part processing stations forming an isolation gap; further comprising at least one closed-mold stable state detection device, wherein the at least one closed-mold stable state detection device is disposed at the isolation gap; the closed-mold stable state detection device includes upper and lower corresponding movable detection parts and fixed bearing parts, wherein in the closed state, the movable detection parts press against the fixed bearing parts; the movable parts include an upper base mounted on the upper mold base. A swing rod is movably connected to the side of the upper base. An elastic detection part is connected between the swing rod and the upper base. The swing rod is elastically connected to the upper base and swings up and down on the side of the upper base. The end of the swing rod is equipped with a contact rolling part that can rotate circumferentially along the swing rod. The fixed bearing part includes a lower base mounted on the lower mold base. The lower base is provided with a bearing platform corresponding to the contact rolling part. In the mold closing state, the contact rolling part touches the corresponding bearing platform, causing the swing rod to swing upward. In the mold closing misalignment state, the contact rolling part rolls due to tilting when it touches the bearing platform.

[0005] Furthermore, the swing rod is connected to a hinge, and the swing rod is movably connected to the side of the upper base through the hinge; a bottom support is provided on the side of the upper base to support the swing rod; when the contact rolling part is not pressing the bearing platform, the swing rod, which is elastically pulled by the elastic detection part, is supported by the bottom support and is in a horizontal position; when the contact rolling part is pressing the bearing platform, the swing rod swings from the horizontal position to an inclined position to change the elastic force borne by the elastic detection part.

[0006] Furthermore, the elastic detection unit is a pressure sensor spring.

[0007] Furthermore, the contact rolling part is provided with a speed sensor to detect its rotation speed. The contact rolling part is coaxially and fixedly connected with a toothed ring. The speed sensor is connected to the swing rod through a sensor bracket, so that the detection head of the speed sensor mounted on the swing rod always faces the tooth surface of the toothed ring.

[0008] Furthermore, the contact rolling part is connected to the damped rotation of the swing rod.

[0009] Furthermore, the contact rolling part is a roller rotatably connected to the swing arm via a bearing. An end cap screwed onto the swing arm and covering the bearing is provided on the outer side of the roller. A damping elastic part is coaxially sleeved on the swing arm on the inner side of the roller. The damping elastic part circumferentially elastically abuts against the hub of the roller to provide the roller with an elastic damping force to dampen rotation on the swing arm.

[0010] Furthermore, a sleeve is coaxially connected to the hub of the roller via fasteners, and the gear ring is mounted on the sleeve.

[0011] Furthermore, in the mold closing steady-state detection device, the four sides of the upper base of the movable detection part are connected to the contact rolling part by a swing rod, and the bearing platform provided on the lower base of the fixed bearing part corresponds one-to-one with the contact rolling part, thus forming a mold closing steady-state detection mechanism for the processing mold body with multiple sheet metal processing stations in the front, back, left and right directions.

[0012] Beneficial Effects: This invention determines the mold closing stability by detecting the elastic change of the elastic detection part caused by the swinging of the swing rod of the mold closing stability detection device during mold closing, and the rolling state of the contact rolling part of the pressure bearing platform. The swing rod, in conjunction with the pressure sensor spring, can detect whether the downward movement speed of the upper mold structure is stable during mold closing. During mold closing, the pressure sensor spring is compressed. If the real-time pressure value change is relatively stable, i.e., there are no large instantaneous fluctuations, it indicates that the downward movement speed of the upper mold structure is stable; otherwise, it indicates that the downward movement speed of the upper mold structure is unstable. The contact rolling part, in conjunction with the speed sensor, can detect whether the mold closing is skewed. In the case of skew, when the contact rolling part touches the pressure bearing platform, the contact rolling part will roll. The speed sensor can capture the rolling of the contact rolling part, thereby determining that the mold closing is skewed. Both unstable mold closing speed and mold closing skew indicate that the mold has an unstable mold closing stability, requiring mold repair, thereby improving mold closing stability and processing quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 This is a schematic diagram of the upper mold base;

[0015] Figure 3 This is a schematic diagram of the lower mold base.

[0016] Figure 4 This is a schematic diagram of the mold closing steady-state detection device;

[0017] Figure 5 This is a schematic diagram of the active detection section of the mold closing steady-state detection device. Detailed Implementation

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] like Figure 1 , Figure 2 , Figure 3 as well as Figure 4As shown, a multi-station sheet metal part processing mold with a closed-end stability includes a processing mold body 1. The processing mold body 1 has multiple sheet metal part processing stations 13 arranged side by side between an upper mold base 11 and a lower mold base 12, with at least two adjacent sheet metal part processing stations 13 forming an isolation gap. It also includes at least one closed-end stability detection device 2, which is disposed at the isolation gap. The closed-end stability detection device 2 includes upper and lower corresponding movable detection parts 21 and fixed bearing parts 22. In the closed-end state, the movable detection parts 21 press against the fixed bearing parts 22. The movable part 21 includes an upper base 21.1 mounted on the upper mold base 11. A swing rod 21.2 is movably connected to the side of the upper base 21.1. An elastic detection part 21.3 is connected between the swing rod 21.2 and the upper base 21.1. The upper base 21.1 is elastically connected to the upper base 21.2 via the elastic detection part 21.3 and swings up and down. The end of the swing rod 21.2 is equipped with a contact rolling part 21.4 that can rotate around the circumference of the swing rod 21.2. More specifically, the elastic detection part 21.3 is a pressure sensor spring. The contact rolling part 21.4 is equipped with a speed sensor 21.7 to detect its rotation speed. The fixed bearing part 22 includes a lower base 22.1 mounted on the lower mold base 12. The lower base 22.1 is equipped with a bearing platform 22.2 corresponding to the contact rolling part 21.4. In the mold closing state, the contact rolling part 21.4 touches the corresponding bearing platform 22.2, causing the swing rod 21.2 to swing upward. In the mold closing misalignment state, the contact rolling part 21.4 rolls due to tilt when it touches the bearing platform 22.2. This invention determines the mold closing stability by measuring the elastic change of the elastic detection part 21.3 caused by the swing of the swing rod 21.2 of the mold closing stability detection device 2 and the rolling state of the contact rolling part 21.4 of the pressure bearing platform 22.2. The swing rod 21.2, in conjunction with the pressure sensor spring, can detect whether the downward movement speed of the upper mold structure is stable during mold closing. During mold closing, the pressure sensor spring is compressed. If the pressure value change amplitude detected in real time is relatively stable, that is, there is no instantaneous large fluctuation, it indicates that the downward movement speed of the upper mold structure is stable; otherwise, it indicates that the upper mold structure is unstable. If the downward movement speed is unstable, the contact rolling part 21.4, in conjunction with the speed sensor 21.7, can detect whether the mold closing is misaligned. If misalignment occurs, when the contact rolling part 21.4 touches the bearing platform 22.2, the contact rolling part 21.4 will roll. The speed sensor 21.7 can detect the rolling of the contact rolling part 21.4, thereby determining that the mold closing is misaligned. Both unstable mold closing speed and mold closing misalignment indicate that the mold has a steady-state instability, and the mold needs to be repaired to improve mold closing stability and processing quality.

[0020] To further improve the accuracy of mold closing steady-state detection, a comprehensive design is needed in the detection orientation. Therefore, in this invention, as... Figure 4 As shown, in the mold closing stability detection device 2, the four sides of the upper base 21.1 of the movable detection part 21 are all connected to the contact rolling part 21.4 through the swing rod 21.2, and the bearing platform 22.2 provided on the lower base 22.1 of the fixed bearing part 22 corresponds one-to-one with the contact rolling part 21.4, thus forming a mold closing stability detection mechanism for the processing mold body 1 with multiple sheet metal processing stations 13 in the front, back, left and right directions. Specifically, during mold closing, the consistency of pressure detection data from the four pressure sensor springs connected to the swing rod 21.2 can determine whether mold closing has skewed. Specifically, if the pressure detection data from at least one pressure sensor spring is inconsistent with the pressure detection data from the other pressure sensor springs, it indicates mold closing skew and an unstable mold closing state. Simultaneously, the rotational speed detection results from the four rotational speed sensors 21.7 contacting the rolling parts 21.4 can also determine whether mold closing has skewed. Specifically, if at least one rotational speed sensor 21.7 detects the rotational speed of the contacting rolling parts 21.4, it indicates mold closing skew and an unstable mold closing state. Through this structural design, mold closing stability coverage detection is achieved in four directions: front, rear, left, and right, improving the detection accuracy of mold closing stability.

[0021] like Figure 4 or Figure 5 As shown, the swing rod 21.2 is connected to a hinge 21.5, and the swing rod 21.2 is movably connected to the side of the upper base 21.1 through the hinge 21.5; a bottom support 21.6 is provided on the side of the upper base 21.1 to support the swing rod 21.2; when the contact rolling part 21.4 is not pressing the bearing platform 22.2, the swing rod 21.2, which is elastically pulled by the elastic detection part 21.3, is supported in a horizontal position by the bottom support 21.6. 6 provides support for the swing rod 21.2, protects the elastic detection part 21.3, and ensures that the four swing rods 21.2 of the mold closing steady-state detection mechanism are at the same height in the initial position, so as to avoid large errors when using the pressure detection part 21.3 in the subsequent process and improve accuracy. When the rolling part 21.4 touches the pressure bearing platform 22.2, the swing rod 21.2 swings from the horizontal posture to the inclined posture to change the elastic force borne by the elastic detection part 21.3.

[0022] More specifically, the contact rolling part 21.4 is coaxially and fixedly connected to the toothed ring 21.8, and the speed sensor 21.7 is connected to the swing rod 21.2 through the sensor bracket 211, so that the detection head of the speed sensor 21.7 installed on the swing rod 21.2 always faces the tooth surface of the toothed ring 21.8.

[0023] If the rotational connection between the contact rolling part 21.4 and the swing rod 21.2 is very flexible when the mold is closed without deviation, a momentary slight rolling of the contact rolling part 21.4 may occur at the instant the contact rolling part 21.4 touches the bearing platform 22.2. Although this slight rolling is negligible, it may be detected by a high-precision speed sensor 21.7, thus affecting the judgment of the mold closing steady state. To solve this problem, in this invention, the contact rolling part 21.4 and the swing rod 21.2 are connected by damped rotation, so that the rotational connection between the contact rolling part 21.4 and the swing rod 21.2 is less flexible. At the instant the contact rolling part 21.4 touches the bearing platform 22.2, the rolling of the contact rolling part 21.4 is avoided, eliminating the above-mentioned influence on the judgment of the mold closing steady state.

[0024] like Figure 5 As shown, the contact rolling part 21.4 is a roller rotatably connected to the swing rod 21.2 via a bearing 215. An end cap 213, screwed onto the swing rod 21.2 and covering the bearing 215, is provided on the outer side of the roller. A damping elastic part 212, coaxially sleeved on the swing rod 21.2, is provided on the inner side of the roller. The damping elastic part 212 circumferentially elastically abuts against the hub of the roller to provide an elastic damping force to the roller to dampen rotation on the swing rod 21.2. In this invention, the damping elastic part 212 can be a conical spring. A sleeve 21.9 is coaxially connected to the hub of the roller via a fastener 214. The gear ring 21.8 is mounted on the sleeve 21.9. The fastener 214 is a bolt and nut assembly slidably connected to the hub of the roller.

[0025] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A multi-station sheet metal part processing mold with a closed-mold stable state, comprising a processing mold body (1), the processing mold body (1) having a plurality of sheet metal part processing stations (13) arranged side by side between an upper mold base (11) and a lower mold base (12), wherein at least two adjacent sheet metal part processing stations (13) form an isolation gap; characterized in that: It also includes at least one mold closing steady-state detection device (2), and at least one of the mold closing steady-state detection devices (2) is disposed at the isolation gap; the mold closing steady-state detection device (2) includes upper and lower corresponding movable detection parts (21) and fixed bearing parts (22). In the mold closing state, the movable detection parts (21) press against the fixed bearing parts (22); the movable detection parts (21) include an upper base (21.1) installed on the upper mold base (11), and a swing rod (21.2) is movably connected to the side of the upper base (21.1). An elastic detection part (21.3) is connected between the swing rod (21.2) and the upper base (21.1). The swing rod (21.2) is elastically connected through the elastic detection part (21.3). The upper and lower swing arms are located on the side of the upper base (21.1), and the end of the swing arm (21.2) is equipped with a contact rolling part (21.4) that can rotate around the swing arm (21.2). The fixed bearing part (22) includes a lower base (22.1) mounted on the lower mold base (12), and a bearing platform (22.2) corresponding to the contact rolling part (21.4) is provided on the lower base (22.1). In the mold closing state, the contact rolling part (21.4) touches the corresponding bearing platform (22.2), driving the swing arm (21.2) to swing upward. In the mold closing skew state, the contact rolling part (21.4) touches the bearing platform (22.2) and rolls due to tilting when it touches the bearing platform (22.2). The swing rod (21.2) is connected to a hinge (21.5), and the swing rod (21.2) is movably connected to the side of the upper base (21.1) through the hinge (21.5); a bottom support (21.6) is provided on the side of the upper base (21.1) to support the swing rod (21.2); when the contact rolling part (21.4) does not touch the bearing platform (22.2), the swing rod (21.2) elastically pulled by the elastic detection part (21.3) is supported in a horizontal posture by the bottom support (21.6); when the contact rolling part (21.4) touches the bearing platform (22.2), the swing rod (21.2) swings from a horizontal posture to an inclined posture to change the elastic force borne by the elastic detection part (21.3); The contact rolling part (21.4) is correspondingly provided with a speed sensor (21.7) for detecting its rotation speed. The contact rolling part (21.4) is coaxially and fixedly connected with a toothed ring (21.8). The speed sensor (21.7) is connected to the swing rod (21.2) through a sensor bracket (211), so that the detection head of the speed sensor (21.7) installed on the swing rod (21.2) always faces the tooth surface of the toothed ring (21.8).

2. The mold for processing sheet metal parts in a stable state according to claim 1, characterized in that: The elastic detection part (21.3) is a pressure sensor spring.

3. The mold for processing sheet metal parts in a stable state according to claim 1, characterized in that: The contact rolling part (21.4) is connected to the swing rod (21.2) for damped rotation.

4. The mold for processing sheet metal parts in a stable state according to claim 3, characterized in that: The contact rolling part (21.4) is a roller rotatably connected to the swing rod (21.2) via a bearing (215). An end cap (213) is provided on the outside of the roller and screwed onto the swing rod (21.2) to cover the bearing (215). A damping elastic part (212) is provided on the inside of the roller and coaxially sleeved on the swing rod (21.2). The damping elastic part (212) circumferentially elastically abuts against the hub of the roller to provide the roller with an elastic damping force to dampen the rotation on the swing rod (21.2).

5. A mold for processing sheet metal parts in a stable state according to claim 4, characterized in that: A sleeve (21.9) is coaxially connected to the hub of the roller via a fastener (214), and the gear ring (21.8) is mounted on the sleeve (21.9).

6. A mold for processing sheet metal parts in a stable state according to claim 5, characterized in that: In the mold closing steady state detection device (2), the four sides of the upper base (21.1) of the movable detection part (21) are connected to the contact rolling part (21.4) by the swing rod (21.2), and the bearing platform (22.2) provided on the lower base (22.1) of the fixed bearing part (22) corresponds to the contact rolling part (21.4) one by one, forming a mold closing steady state detection mechanism for the processing mold body (1) with multiple sheet metal processing stations (13) in the front, back, left and right directions.

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