Self-locking switching mechanism

Abstract

The utility model relates to the field of stamping die switching mechanisms, in particular to a self-locking switching mechanism which comprises a sliding block, a driving block and a side air cylinder, a piston rod of the side air cylinder is connected with the driving block and used for driving the driving block to move left and right, the sliding block and the driving block are oppositely arranged, and a self-locking structure is arranged at the matching position of the sliding block and the driving block. The self-locking mechanism is compact in space and small in size, a self-locking structure is arranged at the matching position of the sliding block and the driving block, air-cut self-locking of the air cylinder can be achieved, the return state of the mechanism is switched to be the self-locking state, the air cylinder is not pushed or pulled, and the position of the mechanism cannot be changed due to environment vibration. Therefore, the technical problems that due to the fact that an existing switching mechanism does not have a self-locking function, stamping precision is affected, and even potential safety hazards are caused can be solved.

Description

Technical Field

[0001] The utility model relates to the field of stamping die switching mechanisms, in particular to a self-locking switching mechanism. Background Art

[0002] In stamping dies, some vehicle models require optional cover parts, which is generally achieved through a switching mechanism. In the die design, a pneumatic switching mechanism with inserts is used in key locations. The inserts on this mechanism are controlled by air circuits, and the inserts are used to participate in or not participate in the stamping process, so that one set of dies can produce two or more corresponding stamping parts.

[0003] Existing pneumatic switching mechanisms typically utilize a wedge-shaped design between a drive block and a slider to achieve vertical movement. A cylinder pushes the drive block left and right, which, in turn, uses a wedge structure to drive the insert mounted on the slider up and down, thereby determining whether the insert participates in the stamping process. However, when the cylinder is de-energized, the switching mechanism fails to self-lock, as environmental vibrations can easily cause the slider to slip, affecting stamping accuracy and even posing a safety hazard. Utility Model Content

[0004] The purpose of the utility model is to provide a self-locking switching mechanism, which can solve the technical problem that the existing switching mechanism has no self-locking function, thereby affecting the stamping accuracy and even causing safety hazards.

[0005] To achieve the above-mentioned purpose, the present invention designs a self-locking switching mechanism, which includes a slider, a driving block, and a side cylinder. The piston rod of the side cylinder is connected to the driving block. The slider and the driving block are arranged opposite to each other, and a self-locking structure is provided at the joint between the two.

[0006] As a preferred solution, the slider is provided with an upper slide groove, and the side of the upper slide groove is the upper support part; the driving block is provided with a lower slide groove, and the side of the lower slide groove is the lower support part; the size of the upper slide groove matches that of the lower support part, and the size of the lower slide groove matches that of the upper support part; the upper support part and the lower support part are arranged opposite to each other, and the cooperation between the two forms a self-locking structure.

[0007] Furthermore, an upper boss extends from the side of the upper support portion into the upward sliding groove, and a lower boss extends from the side of the lower support portion into the downward sliding groove, and a hook-type self-locking structure is formed when the upper boss cooperates with the lower boss.

[0008] As a preferred solution, the self-locking switching mechanism further includes a pad, and the slider and the driving block are sequentially arranged on the pad.

[0009] As a preferred solution, the self-locking switching mechanism further includes an outer frame, which is arranged on the pad. The interior of the outer frame is a hollow structure, and the slider and the driving block are both arranged in the cavity of the outer frame.

[0010] Beneficial effects of the utility model:

[0011] The utility model provides a self-locking switching mechanism. A self-locking structure is provided at the joint between the slider and the drive block, which can achieve self-locking when the cylinder is de-energized. The retracted state of the switching mechanism is self-locking, and the cylinder is not pushed or pulled, and the mechanism will not change position due to environmental vibration. Therefore, the utility model can solve the technical problem that the existing switching mechanism lacks a self-locking function, which affects stamping accuracy and even poses a safety hazard. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the main sectional view of the present utility model.

[0013] Figure 2 A cross-sectional view of the slider.

[0014] Figure 3 A cross-sectional view of the drive block.

[0015] Figure 4 It is a cross-sectional view of embodiment 1 of the self-locking structure.

[0016] Figure 5 It is a cross-sectional view of the second embodiment of the self-locking structure.

[0017] Description of reference numerals:

[0018] Upper slider 01, outer frame 02, pad 03, side cylinder 04, bottom cylinder 05, slider 06, drive block 07, cylinder connecting rod 08, drive connecting block 09, upper slide groove 10, upper support part 11, upper boss 12, lower slide groove 13, lower support part 14, lower boss 15. DETAILED DESCRIPTION

[0019] To make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the present invention more clearly understood, the technical solutions of the present invention are further described below with reference to the accompanying drawings and through specific embodiments. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of it.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0021] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed or detachable connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0022] In response to the technical problem that the existing switching mechanism has no self-locking function, thus affecting the stamping accuracy and even causing safety hazards, the utility model provides a self-locking switching mechanism. A self-locking structure is set at the matching point of the slider and the drive block, which can realize self-locking when the cylinder is cut off from air. The retraction state of the switching mechanism is a self-locking state. The cylinder is not pushed or pulled, and the mechanism will not change position due to environmental vibration.

[0023] like Figure 1 As shown, the utility model provides a self-locking switching mechanism, including an outer frame 02, a pad 03, a slider 06, a drive block 07, and a side cylinder 04. The piston rod of the side cylinder 04 is connected to the drive block 07, and the slider 06 and the drive block 07 are arranged opposite to each other, and a self-locking structure is provided at the joint between the two.

[0024] like Figure 2 、 3 As shown, the slider 06 is provided with an upper groove 10, with an upper support portion 11 on the side of the upper groove 10; the driving block 07 is provided with a lower groove 13, with a lower support portion 14 on the side of the lower groove 13; the upper groove 10 and the lower support portion 14 are of the same size, and the lower groove 13 and the upper support portion 11 are of the same size; the upper support portion 11 and the lower support portion 14 are arranged opposite each other, and the joint between the two forms a self-locking structure. The upper support portion 11 has an upper boss 12 extending upward from the upper groove 10, and the lower support portion 14 has a lower boss 15 extending downward from the groove 13. When the upper boss 12 and the lower boss 15 cooperate, a hook-type self-locking structure is formed.

[0025] The slider 06 and the driving block 07 are sequentially arranged on the pad 03. The outer frame is arranged on the pad 03, and the inner part of the outer frame is a hollow structure, and the slider 06 and the driving block 07 are both arranged in the cavity of the outer frame.

[0026] Example 1:

[0027] like Figure 4 As shown, the slider 06 is above the driving block 07 and has only one lateral cylinder. This structure is more common in traditional inclined wedges. The movement of the slider is driven by the driving block through the inclined wedge structure. Therefore, since the wedge angle is generally 20° to 40°, the slider movement stroke is limited and the stroke selection range is small.

[0028] The self-locking mechanism forms a hook-restricting structure when the upper boss 12 and the lower boss 15 mate. The width of the upper chute 10 is slightly wider than the width of the lower support 14, while the width of the lower chute 13 is slightly wider than the width of the upper support 11, leaving clearance for the mechanism to unlock. Because the slider 06 is above the drive block 07, this self-locking mechanism prevents the slider from sliding upward due to environmental vibrations, which could affect stamping accuracy.

[0029] Example 2:

[0030] like Figure 5 As shown, slider 06 is located below drive block 07. This self-locking switching mechanism comprises an upper slider 01, an outer frame 02, a slider 06, a drive block 07, a backing plate 03, a side cylinder 04, and a bottom cylinder 05. Slider 06 and drive block 07 are arranged on backing plate 03 in this order from top to bottom. Side cylinder 04 is located on the side of backing plate 03, its piston rod connected to drive block 07. Bottom cylinder 05 is located on the bottom of backing plate 03, its piston rod connected to slider 06. The cylinder diameter of side cylinder 04 is smaller than that of bottom cylinder 05. When the cylinders are ventilated, the slider first moves longitudinally due to the greater force of the larger bottom cylinder. Once the longitudinal stroke is complete, the smaller side cylinder pushes the slider upward, extending the longitudinal switching stroke. Upper slider 01 is mounted on slider 06 and connected to the connecting rods of slider 06 and bottom cylinder 05 via screws. The outer frame is arranged on the pad 03 , and the interior of the outer frame is a hollow structure. The slider 06 and the driving block 07 are both arranged in the cavity of the outer frame.

[0031] The dual-cylinder structure eliminates the need for a wedge-shaped movement, reducing both the lateral and overall length of the mechanism, thereby conserving mold space. A small-bore cylinder is positioned horizontally, while a larger-bore cylinder is positioned at the bottom. When the cylinders are energized, the larger cylinder at the bottom exerts greater force, causing the slider to move longitudinally first. Once the longitudinal stroke is complete, the smaller cylinder at the side pushes the slider upward, extending the longitudinal switching stroke. The slider's longitudinal switching stroke is determined by the piston rod length of the bottom cylinder, not the angle of the wedge. This means the bottom cylinder directly propels the slider up and down, rather than relying on the side cylinders to drive the drive block. This allows for a longitudinal switching stroke of 30-70mm. The dual cylinders can be energized simultaneously for synchronous movement or sequentially for separate movement. During synchronized movement, the side cylinder moves slightly ahead to unlock the mechanism, and the synchronization of the two cylinders can be controlled by a speed control valve. During separate movement, the side cylinder moves first to unlock the mechanism, followed by the bottom cylinder, which then energizes, causing slider 06 to lift upper slider 01 upward. The slider that moves up and down and the driving block that moves left and right form a hook restriction structure when they retract to prevent the horizontal slider from sliding due to mold vibration after air is cut off, causing the slider on the mechanism to slide downward and cause switching failure.

[0032] The self-locking mechanism forms a hook-restricting structure when the upper boss 12 and the lower boss 15 mate. The width of the upper chute 10 is slightly wider than the width of the lower support 14, while the width of the lower chute 13 is slightly wider than the width of the upper support 11, leaving clearance for the mechanism to unlock. Because the slider 06 is below the drive block 07, this self-locking mechanism prevents the slider from falling due to environmental vibrations, which could pose a safety hazard.

[0033] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A self-locking switching mechanism, characterized in that: The invention comprises a slider (06), a driving block (07), and a side cylinder (04); the piston rod of the side cylinder (04) is connected to the driving block (07); the slider (06) and the driving block (07) are arranged opposite to each other, and a self-locking structure is provided at the joint between the two.

2. A self-locking switching mechanism according to claim 1, characterized in that: The slider (06) is provided with an upper slide groove (10), and the side of the upper slide groove (10) is an upper support part (11); the driving block (07) is provided with a lower slide groove (13), and the side of the lower slide groove (13) is a lower support part (14); the size of the upper slide groove (10) matches that of the lower support part (14), and the size of the lower slide groove (13) matches that of the upper support part (11); the upper support part (11) and the lower support part (14) are arranged relative to each other, and the cooperation between the two forms a self-locking structure.

3. A self-locking switching mechanism according to claim 2, characterized in that: The upper support portion (11) extends an upper boss (12) from the side of the upward sliding groove (10), and the lower support portion (14) extends a lower boss (15) from the side of the downward sliding groove (13). When the upper boss (12) and the lower boss (15) cooperate, a hook-type self-locking structure is formed.

4. A self-locking switching mechanism according to any one of claims 1 to 3, characterized in that: The self-locking switching mechanism further comprises a pad (03), and the slider (06) and the driving block (07) are sequentially arranged on the pad (03).

5. A self-locking switching mechanism according to claim 4, characterized in that: The self-locking switching mechanism further comprises an outer frame, which is arranged on the backing plate (03). The interior of the outer frame is a hollow structure, and the slider (06) and the driving block (07) are both arranged in the cavity of the outer frame.

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