Demolding mechanism of thermal forming stamping die for automobile central channel

Abstract

The invention relates to the technical field of automobile hot stamping demolding, and discloses an automobile central channel hot forming stamping mold demolding mechanism which comprises a rectangular mold, a fixing mechanism is arranged on the inner side of the top of the rectangular mold, a positioning mechanism is arranged on the inner side of the bottom of the rectangular mold, and a separating mechanism is arranged on the inner side of the top of the rectangular mold. The positioning mechanism comprises a transmission assembly and a clamping assembly, the transmission assembly is arranged at the bottom of the inner side of the rectangular mold, and the clamping assembly is arranged on the outer side of the rectangular mold. When a second lifting spring moves, the second lifting spring and a top supporting shaft are fixedly installed, so that the supporting shaft moves, when the supporting shaft moves, the supporting shaft and a top rectangular block are fixedly installed, so that a rectangular block moves, and when the rectangular block moves, the rectangular block and a positioning spring shaft are fixedly installed, so that a workpiece is positioned and clamped; in this way, when the workpiece is stamped and demolded, the phenomenon that the workpiece is blocked due to deviation is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of automobile hot stamping demoulding, in particular to a demoulding mechanism for a hot forming stamping die for an automobile central channel. Background Art

[0002] A car refers to a power-driven, non-rail-borne vehicle with four or more wheels, mainly used for: carrying people or goods and towing vehicles carrying people or goods. The central aisle of a car is the aisle located between the front seats of the car. The hot forming stamping technology is adopted in the manufacturing of the central aisle of a car.

[0003] According to the description in a demoulding mechanism for a hot forming stamping die of a central channel of an automobile disclosed on the patent website (authorization announcement number: CN 217343181 U), "the utility model relates to the technical field of stamping dies, specifically to a demoulding mechanism for a hot forming stamping die of a central channel of an automobile, comprising a fixed frame, a bottom die is arranged inside the fixed frame, a top die is arranged inside the fixed frame at a position directly above the bottom die, a telescopic cylinder is fixedly installed on the upper end of the fixed frame, the telescopic end of the telescopic cylinder is fixedly connected to the upper end of the top die, the bottom die comprises a bottom plate and a bottom die frame arranged on the inner side of the bottom plate, the bottom die frame is fixedly connected to the inner bottom surface of the fixed frame through a connecting frame, two guide rods are symmetrically fixedly installed inside the fixed frame at a position outside the bottom die, and guide blocks a are fixedly installed on both sides of the bottom plate. The utility model facilitates rapid demoulding of molded products, and the demoulding operation is convenient and simple, more convenient to use, and is conducive to improving the demoulding efficiency of molded products.

[0004] In view of the above description, the applicant believes that there are the following problems:

[0005] During the use of the utility model, the device is not provided with a positioning and fixing device when hot stamping and demolding the workpiece, so that when the device is used for demolding, the demolding is uneven, resulting in workpiece displacement, which can easily lead to jamming during demolding, making demolding inconvenient, and requiring a lot of time to be spent on demolding, which reduces work efficiency. Therefore, it is necessary to improve a demolding mechanism for a hot forming stamping die for a central channel of an automobile. Summary of the invention

[0006] The object of the present invention is to provide a demoulding mechanism for a hot forming stamping die of a central channel of an automobile, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a demoulding mechanism for a hot forming stamping die for a central channel of an automobile, comprising a rectangular die, a fixing mechanism is arranged on the inner side of the top of the rectangular die, a positioning mechanism is arranged on the inner side of the bottom of the rectangular die, and a separation mechanism is arranged on the inner side of the top of the rectangular die;

[0008] The positioning mechanism comprises a transmission assembly and a clamping assembly. The transmission assembly is arranged at the inner bottom of the rectangular mold, and the clamping assembly is arranged at the outer side of the rectangular mold.

[0009] Preferably, the separation mechanism includes a rotating disk, which is rotatably installed on the right side of the rectangular mold, and a rotating shaft is fixedly installed on the left side of the rotating disk, a gear shaft is fixedly installed on the end of the rotating shaft away from the rotating disk, a positioning block is rotatably installed on the outer side of the rotating shaft, a gear disk is meshed on the outer side of the gear shaft, a lifting screw is fixedly installed on the top of the gear disk, a threaded sleeve is threadedly installed on the outer side of the top of the lifting screw, a lifting spring 1 is fixedly installed on the top of the threaded sleeve, and a lifting column is fixedly installed on the top of the lifting spring 1, so as to enable demolding.

[0010] Preferably, a lifting groove is opened inside the rectangular mold, and the gear disc is rotatably installed at the bottom of the lifting groove. Four lifting columns are provided, and the four lifting columns are slidably installed on the inner wall of the lifting groove to adjust the demoulding.

[0011] Preferably, the fixing mechanism includes a sliding rectangular rod, which is slidably installed on the front side of the rectangular mold, and a trapezoidal block is fixedly installed on the back of the sliding rectangular rod. A limiting rod is slidably installed on the outside of the trapezoidal block, and a spring pin is fixedly installed on the back of the trapezoidal block, so as to enable the fixing device.

[0012] Preferably, four sliding rectangular rods are provided, and the four sliding rectangular rods pass through the outside of the rectangular mold, a sliding groove is opened inside the limiting rod, and the trapezoidal block is slidably installed inside the sliding groove, two spring pins are provided, and two spring pins are fixedly installed at one end away from the trapezoidal block, a fixing groove is opened on the top of the rectangular mold, and the limiting rod is fixedly installed inside the fixing groove, and the fixing device is adjusted.

[0013] Preferably, the transmission assembly includes a bidirectional asynchronous motor, which is fixedly mounted on the right side of the rectangular mold, a rotating rod is fixedly mounted on the output end of the bidirectional asynchronous motor, a bevel gear 2 is fixedly mounted on the end of the rotating rod away from the bidirectional asynchronous motor, a bevel gear 3 is meshed on the outer side of the bevel gear 2, a bidirectional screw 1 is fixedly mounted inside the bevel gear 3, a bevel gear 1 is meshed on the outer side of the bevel gear 3, and a bidirectional screw 2 is fixedly mounted inside the bevel gear 1, thereby enabling the device to transmit.

[0014] Preferably, the rotating rod passes through the right side of the rectangular mold, and the bidirectional screw rod 2 and the bidirectional screw rod 1 are both rotatably mounted on the inner wall of the rectangular mold to limit the transmission of the device.

[0015] Preferably, the clamping assembly includes a threaded block, the threaded block is threadedly mounted on the outside of the second bidirectional screw, a sliding frame is fixedly mounted on the outside of the threaded block, a limited lifting shaft is fixedly mounted on the top of the sliding frame, a lifting spring second is fixedly mounted on the top of the sliding frame, a support shaft is fixedly mounted on the top of the second lifting spring, a rectangular block is fixedly mounted on the top of the support shaft, a positioning spring shaft is fixedly mounted on the left side of the rectangular block, and a positioning gasket is fixedly mounted on the left side of the positioning spring shaft, which can position the part workpiece.

[0016] Preferably, four threaded blocks are provided and threaded holes are provided inside the four threaded blocks, and the sliding frame passes through the right side of the rectangular mold to adjust the positioning.

[0017] Preferably, a sliding groove is provided inside the rectangular mold, and the sliding frame is slidably installed inside the sliding groove to install parts.

[0018] Compared with the prior art, the present invention provides a demoulding mechanism for a hot forming stamping die of a central channel of an automobile, which has the following beneficial effects:

[0019] 1. A demolding mechanism for a hot forming stamping die for a central channel of an automobile. When the sliding frame moves, it is fixedly installed with the second lifting spring on the top, thereby driving the second lifting spring to move. When the second lifting spring moves, it is fixedly installed with the top support shaft, thereby causing the support shaft to move. When the support shaft moves, it is fixedly installed with the top rectangular block, thereby causing the rectangular block to move. When the rectangular block moves, it is fixedly installed with the positioning spring shaft, thereby positioning and clamping the workpiece. In this way, when the workpiece is stamped and demolded, no deviation will occur, thereby causing jamming.

[0020] 2. A demolding mechanism for a hot forming stamping die for a central channel of an automobile. When stamping is completed, the rotating disk is manually rotated. When the rotating disk is rotated, it is fixedly installed with the rotating shaft to drive the rotating shaft to rotate. When the rotating shaft rotates, it is fixedly installed with the gear shaft to drive the gear shaft to rotate. When the gear shaft rotates, it engages with the outer gear disk to drive the gear disk to rotate. When the gear disk rotates, it is fixedly installed with the lifting screw to drive the lifting screw to rotate. When the lifting screw rotates, it is threadedly installed with the top threaded sleeve to drive the threaded sleeve to rise and fall, so that the workpiece can be demolded. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. 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 labor:

[0022] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the demoulding mechanism structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the fixing mechanism structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the positioning mechanism structure of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the transmission assembly of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the clamping assembly of the present invention.

[0028] In the figure: 1, rectangular mold; 2, separation mechanism; 3, fixing mechanism; 4, positioning mechanism; 41, transmission assembly; 42, clamping assembly; 21, lifting column; 22, lifting spring one; 23, threaded sleeve; 24, gear shaft; 25, lifting screw; 26, gear plate; 27, rotating plate; 28, rotating shaft; 29, positioning block; 31, sliding rectangular rod; 32, limiting rod; 33, trapezoidal block; 34, spring pin; 411, bevel gear one; 412, bidirectional asynchronous motor; 413, rotating rod; 414, bevel gear two; 415, bidirectional screw one; 416, bevel gear three; 417, bidirectional screw two; 421, positioning gasket; 422, limiting lifting shaft; 423, sliding frame; 424, threaded block; 425, positioning spring shaft; 426, rectangular block; 427, supporting shaft; 428, lifting spring two. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Embodiment 1:

[0032] See also Figure 1-6 The present invention provides a technical solution: a demoulding mechanism of a hot forming stamping die for a central channel of an automobile, comprising a rectangular die 1, a fixing mechanism 3 is arranged on the inner side of the top of the rectangular die 1, a positioning mechanism 4 is arranged on the inner side of the bottom of the rectangular die 1, and a separation mechanism 2 is arranged on the inner side of the top of the rectangular die 1;

[0033] The positioning mechanism 4 includes a transmission assembly 41 and a clamping assembly 42 . The transmission assembly 41 is arranged at the inner bottom of the rectangular mold 1 , and the clamping assembly 42 is arranged at the outer side of the rectangular mold 1 .

[0034] The separation mechanism 2 includes a rotating disk 27, which is rotatably installed on the right side of the rectangular mold 1, and a rotating shaft 28 is fixedly installed on the left side of the rotating disk 27. A gear shaft 24 is fixedly installed on the end of the rotating shaft 28 away from the rotating disk 27, and a positioning block 29 is rotatably installed on the outer side of the rotating shaft 28. A gear disk 26 is meshed on the outer side of the gear shaft 24, and a lifting screw 25 is fixedly installed on the top of the gear disk 26. A threaded sleeve 23 is threadedly installed on the outer side of the top of the lifting screw 25, a lifting spring 22 is fixedly installed on the top of the threaded sleeve 23, and a lifting column 21 is fixedly installed on the top of the lifting spring 22, so that demolding can be performed.

[0035] A lifting groove is provided inside the rectangular mold 1, and a toothed disc 26 is rotatably installed at the bottom of the lifting groove. Four lifting columns 21 are provided, and the four lifting columns 21 are slidably installed on the inner wall of the lifting groove to adjust the demoulding.

[0036] The fixing mechanism 3 includes a sliding rectangular rod 31, which is slidably installed on the front side of the rectangular mold 1, and a trapezoidal block 33 is fixedly installed on the back of the sliding rectangular rod 31. A limiting rod 32 is slidably installed on the outer side of the trapezoidal block 33, and a spring pin 34 is fixedly installed on the back of the trapezoidal block 33, which can make the fixing device.

[0037] Four sliding rectangular rods 31 are provided, and the four sliding rectangular rods 31 pass through the outside of the rectangular mold 1. A sliding groove is opened inside the limiting rod 32, and the trapezoidal block 33 is slidably installed inside the sliding groove. Two spring pins 34 are provided, and the two spring pins 34 are fixedly installed at one end away from the trapezoidal block 33. A fixing groove is opened at the top of the rectangular mold 1, and the limiting rod 32 is fixedly installed inside the fixing groove to adjust the fixing device.

[0038] Embodiment 2:

[0039] See also Figure 5 , and combined with Example 1, it is further obtained that the transmission component 41 includes a bidirectional asynchronous motor 412, the bidirectional asynchronous motor 412 is fixedly installed on the right side of the rectangular mold 1, and a rotating rod 413 is fixedly installed on the output end of the bidirectional asynchronous motor 412, and a bevel gear 2 414 is fixedly installed on the end of the rotating rod 413 away from the bidirectional asynchronous motor 412, and a bevel gear 3 416 is meshed on the outer side of the bevel gear 2 414, and a bidirectional screw 1 415 is fixedly installed inside the bevel gear 3 416, and a bevel gear 1 411 is meshed on the outer side of the bevel gear 3 416, and a bidirectional screw 2 417 is fixedly installed inside the bevel gear 1 411, which can enable the device to transmit.

[0040] The rotating rod 413 passes through the right side of the rectangular mold 1, and the bidirectional screw rod 2 417 and the bidirectional screw rod 1 415 are both rotatably mounted on the inner wall of the rectangular mold 1 to limit the transmission of the device.

[0041] The clamping assembly 42 includes a threaded block 424, which is threadedly mounted on the outside of the bidirectional screw rod 417, a sliding frame 423 is fixedly mounted on the outside of the threaded block 424, a limited lifting shaft 422 is fixedly mounted on the top of the sliding frame 423, a lifting spring 428 is fixedly mounted on the top of the sliding frame 423, a support shaft 427 is fixedly mounted on the top of the lifting spring 428, a rectangular block 426 is fixedly mounted on the top of the support shaft 427, a positioning spring shaft 425 is fixedly mounted on the left side of the rectangular block 426, and a positioning gasket 421 is fixedly mounted on the left side of the positioning spring shaft 425, which can position the workpiece.

[0042] There are four threaded blocks 424 and threaded holes are arranged inside the four threaded blocks 424. The sliding frame 423 passes through the right side of the rectangular mold 1 to adjust the positioning.

[0043] A sliding groove is provided inside the rectangular mold 1, and a sliding frame 423 is slidably installed inside the sliding groove for installing parts.

[0044] In actual operation, when this device is used, when it is necessary to process the workpiece, the heated workpiece is placed on the top of the rectangular mold 1. When the workpiece is placed, the bidirectional asynchronous motor 412 is energized. When the bidirectional asynchronous motor 412 is energized, it is fixedly installed with the output end rotating rod 413, thereby driving the rotating rod 413 to rotate. When the rotating rod 413 rotates, it is fixedly installed with the bevel gear 2 414, so that the bevel gear 2 414 is driven to rotate. When the bevel gear 2 414 rotates, it is meshed with the outer bevel gear 3 416 to rotate the bevel gear 3 416. When the bevel gear 3 416 rotates, it is fixedly installed with the internal bidirectional screw 1 415, thereby driving the bidirectional screw 1 415 to rotate. When the bevel gear 3 416 rotates, it is meshed with the outer bevel gear 1 411 to rotate the bevel gear 1 411. In this way, the bidirectional screw 2 417 can be driven to rotate through the bevel gear 1 411. When the bidirectional screw 2 417 rotates, the device can be driven to transmit the power.

[0045] When the interior rotates, it moves through the threaded installation between the threaded block 424 and the two-way screw rod 417 and the two-way screw rod 1 415. When the threaded block 424 moves, it drives the sliding frame 423 to move through the fixed installation between the outer sliding frame 423. When the sliding frame 423 moves, it drives the lifting spring 2 428 to move through the fixed installation between the top lifting spring 2 428. When the lifting spring 2 428 moves, it drives the support shaft 427 to move through the fixed installation between the top support shaft 427. When the support shaft 427 moves, it drives the rectangular block 426 to move through the fixed installation between the top rectangular block 426. When the rectangular block 426 moves, it drives the workpiece to be positioned and clamped through the fixed installation between the positioning spring shaft 425. In this way, when the workpiece is stamped and demolded, it will not deviate and cause jamming.

[0046] When the workpiece is punched, the upper and lower molds are matched, so that the buckle is clamped inside the top fixing groove of the rectangular mold 1, and the buckle is in contact with the trapezoidal block 33 so that the trapezoidal block 33 moves. When the clamping is completed, the trapezoidal block 33 is fixed and installed with the spring pin 34, so that the trapezoidal block 33 is restored, which can prevent the punching mold from bouncing off.

[0047] When the stamping is completed, the rotating disk 27 is manually rotated. When the rotating disk 27 is rotated, it is fixedly installed with the rotating shaft 28, thereby driving the rotating shaft 28 to rotate. When the rotating shaft 28 rotates, it is fixedly installed with the gear shaft 24 to drive the gear shaft 24 to rotate. When the gear shaft 24 rotates, it engages with the outer gear disk 26 to drive the gear disk 26 to rotate. When the gear disk 26 rotates, it is fixedly installed with the lifting screw 25 to drive the lifting screw 25 to rotate. When the lifting screw 25 rotates, it is threadedly installed with the top threaded sleeve 23, thereby driving the threaded sleeve 23 to rise and fall, so that the workpiece can be demolded.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A demoulding mechanism for a hot forming stamping die for a central channel of an automobile, comprising a rectangular die (1), characterized in that: A fixing mechanism (3) is provided on the inner side of the top of the rectangular mold (1), a positioning mechanism (4) is provided on the inner side of the bottom of the rectangular mold (1), and a separating mechanism (2) is provided on the inner side of the top of the rectangular mold (1); The positioning mechanism (4) comprises a transmission component (41) and a clamping component (42); the transmission component (41) is arranged at the inner bottom of the rectangular mold (1), and the clamping component (42) is arranged at the outer side of the rectangular mold (1).

2. The demoulding mechanism of the hot forming stamping die for the central channel of an automobile according to claim 1, characterized in that: The separation mechanism (2) comprises a rotating disk (27), the rotating disk (27) being rotatably mounted on the right side of the rectangular mold (1), a rotating shaft (28) being fixedly mounted on the left side of the rotating disk (27), a gear shaft (24) being fixedly mounted on one end of the rotating shaft (28) away from the rotating disk (27), a positioning block (29) being rotatably mounted on the outer side of the rotating shaft (28), a gear disk (26) being meshed on the outer side of the gear shaft (24), a lifting screw rod (25) being fixedly mounted on the top of the gear disk (26), a threaded sleeve (23) being threadedly mounted on the outer side of the top of the lifting screw rod (25), a lifting spring (22) being fixedly mounted on the top of the threaded sleeve (23), and a lifting column (21) being fixedly mounted on the top of the lifting spring (22).

3. The demoulding mechanism of the hot forming stamping die for the central channel of an automobile according to claim 2, characterized in that: A lifting groove is provided inside the rectangular mold (1), and a toothed disc (26) is rotatably mounted at the bottom of the lifting groove. Four lifting columns (21) are provided, and the four lifting columns (21) are slidably mounted on the inner wall of the lifting groove.

4. The demoulding mechanism of the hot forming stamping die for the central channel of an automobile according to claim 1, characterized in that: The fixing mechanism (3) comprises a sliding rectangular rod (31), the sliding rectangular rod (31) is slidably mounted on the front side of the rectangular mold (1), a trapezoidal block (33) is fixedly mounted on the back of the sliding rectangular rod (31), a limiting rod (32) is slidably mounted on the outer side of the trapezoidal block (33), and a spring pin (34) is fixedly mounted on the back of the trapezoidal block (33).

5. The demoulding mechanism of the hot forming stamping die for the central channel of an automobile according to claim 4, characterized in that: Four sliding rectangular rods (31) are provided, and the four sliding rectangular rods (31) penetrate the outer side of the rectangular mold (1); a sliding groove is provided inside the limiting rod (32); the trapezoidal block (33) is slidably installed inside the sliding groove; two spring pins (34) are provided, and the two spring pins (34) are fixedly installed at one end away from the trapezoidal block (33); a fixing groove is provided on the top of the rectangular mold (1), and the limiting rod (32) is fixedly installed inside the fixing groove.

6. The demoulding mechanism of the hot forming stamping die for the central channel of an automobile according to claim 1, characterized in that: The transmission assembly (41) comprises a bidirectional asynchronous motor (412), the bidirectional asynchronous motor (412) being fixedly mounted on the right side of the rectangular mold (1), a rotating rod (413) being fixedly mounted on the output end of the bidirectional asynchronous motor (412), a bevel gear 2 (414) being fixedly mounted on one end of the rotating rod (413) away from the bidirectional asynchronous motor (412), a bevel gear 3 (416) being meshed on the outer side of the bevel gear 2 (414), a bidirectional screw 1 (415) being fixedly mounted inside the bevel gear 3 (416), a bevel gear 1 (411) being meshed on the outer side of the bevel gear 3 (416), and a bidirectional screw 2 (417) being fixedly mounted inside the bevel gear 1 (411).

7. The demoulding mechanism of the hot forming stamping die for the central channel of an automobile according to claim 6, characterized in that: The rotating rod (413) passes through the right side of the rectangular mold (1), and the bidirectional screw rod 2 (417) and the bidirectional screw rod 1 (415) are both rotatably mounted on the inner wall of the rectangular mold (1).

8. The demoulding mechanism of the hot forming stamping die for the central channel of an automobile according to claim 1, characterized in that: The clamping assembly (42) comprises a threaded block (424), wherein the threaded block (424) is threadedly mounted on the outside of the second bidirectional screw rod (417), a sliding frame (423) is fixedly mounted on the outside of the threaded block (424), a limited lifting shaft (422) is fixedly mounted on the top of the sliding frame (423), a second lifting spring (428) is fixedly mounted on the top of the second lifting spring (428), a support shaft (427) is fixedly mounted on the top of the support shaft (427), a rectangular block (426) is fixedly mounted on the top of the support shaft (427), a positioning spring shaft (425) is fixedly mounted on the left side of the rectangular block (426), and a positioning gasket (421) is fixedly mounted on the left side of the positioning spring shaft (425).

9. The demoulding mechanism of the hot forming stamping die for the central channel of an automobile according to claim 8, characterized in that: The threaded blocks (424) are provided in four numbers and threaded holes are provided inside the four threaded blocks (424). The sliding frame (423) passes through the right side of the rectangular mold (1).

10. The demoulding mechanism of the hot forming stamping die for the central channel of an automobile according to claim 8, characterized in that: A sliding groove is provided inside the rectangular mold (1), and the sliding frame (423) is slidably installed inside the sliding groove.

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