CN108620474B

CN108620474B - Cutting piece device is used in ultracapacitor system pole piece production with joint structure

Info

Publication number: CN108620474B
Application number: CN201810324382.1A
Authority: CN
Inventors: 黄浩宇; 田超; 吴文
Original assignee: Hunan Nepuenergy Science & Technology Co Ltd
Current assignee: Hunan Nepuenergy Science & Technology Co Ltd
Priority date: 2018-04-12
Filing date: 2018-04-12
Publication date: 2020-03-24
Anticipated expiration: 2038-04-12
Also published as: CN108620474A

Abstract

The invention relates to a piece cutting device with a combined structure for producing a pole piece of a super capacitor, which comprises a piece cutting device body and a rubber wrapping pad, wherein a servo motor is installed inside the piece cutting device body, the outer side of the servo motor is connected with a connecting rod, the lower end of the connecting rod is provided with a gravity ball, the lower end of the gravity ball is provided with a punching plate, the rubber wrapping pad is arranged at the left end and the right end of the gravity ball, the upper end of the rubber wrapping pad is fixedly provided with a punching block, the upper end of the punching block is connected with a hydraulic rod, and the upper end of the hydraulic rod is provided with a hydraulic pump. This cut-parts device servo motor is used in ultracapacitor system pole piece production with joint structure can drive the connecting rod and rotate about, makes the connecting rod drive the gravity ball and slides about the upper end of punching press board, and gravity ball exerts pressure gravity pressure to the punching press board, makes the punching press board pass through the axis of rotation horizontal hunting, and the punching press board is through moulding plastics as integrated into one piece with the block.

Description

Cutting piece device is used in ultracapacitor system pole piece production with joint structure

Technical Field

The invention relates to the technical field of super capacitors, in particular to a piece cutting device with a combined structure for producing a pole piece of a super capacitor.

Background

The super capacitor is a novel energy storage device between a traditional capacitor and a rechargeable battery, the capacity of the super capacitor can reach hundreds to thousands of methods, and compared with the traditional capacitor, the super capacitor has larger capacity, specific energy or capacity density, wider working temperature range and extremely long service life; compared with a storage battery, the cutting device has higher specific power and no pollution to the environment, and the electrode plates need to be cut in the production process of the super capacitor.

Present cut-parts device of super capacitor piece production usefulness all adopts the punching press to tailor the mode and effectively tailors to the pole piece usually, but usual punching press mode can only carry out cut-parts to a set of capacitor pole piece, need multiple when tailorring generally needs multiunit punching press composite set, can not accomplish a set of punching press composite set and cut-parts to the multiunit pole piece simultaneously, the punching press power degree between it can not definitely be mastered when multiunit pole piece is tailor to the multiunit pole piece, and can not adjust punching press position and dynamics in a set of punching press composite set respectively when the multiunit pole piece is tailor, thereby cause the problem of the inside inconvenient regulation of punching press composite set low in work efficiency, and the inside inconvenient problem of adjusting of punching.

Disclosure of Invention

The invention aims to provide a cutting device with a combined structure for producing a super capacitor pole piece, which aims to solve the problems that the conventional cutting device for producing the super capacitor pole piece in the background art usually effectively cuts the pole piece in a stamping cutting mode, but the conventional stamping mode can only cut one group of capacitor pole piece, multiple groups of stamping combination devices are usually needed when multiple types of cutting are needed, one group of stamping combination devices can not cut multiple groups of pole pieces simultaneously, the stamping strength between the groups of pole pieces can not be accurately mastered when the multiple groups of pole pieces are stamped and cut simultaneously, and the stamping positions and the stamping strength can not be respectively adjusted in one group of stamping combination devices when the multiple groups of pole pieces are cut, so that the cutting work efficiency of the cutting piece is low, and the inside of the stamping combination devices is inconvenient to adjust.

In order to achieve the purpose, the invention provides the following technical scheme: a cutting device with a combined structure for producing a supercapacitor pole piece comprises a cutting device body and a rubber wrapping pad, wherein a servo motor is installed inside the cutting device body, a connecting rod is connected to the outer side of the servo motor, a gravity ball is arranged at the lower end of the connecting rod, punching plates are arranged at the lower end of the gravity ball, the rubber wrapping pad is arranged at the left end and the right end of the gravity ball, punching blocks are fixed at the upper end of the rubber wrapping pad, a hydraulic rod is connected to the upper end of each punching block, a hydraulic pump is installed at the upper end of each hydraulic rod, a clamping block is arranged at the lower end of each punching plate, a fixing rod is connected to the lower end of each clamping block, a clamping groove is formed in the upper end of each fixing rod, connecting pieces are arranged at the left end and the right end of each fixing rod, springs are connected to the lower ends of the connecting, the back of sliding block is provided with the sliding tray, and the inboard of sliding tray is connected with the slide bar, the inside embedding of sliding tray has fixing bolt, both ends are settled there is the fixed shim about the blade, and the inboard of fixed shim is connected with expanding spring.

Preferably, the gravity ball is circular, and the gravity ball and the connecting rod form an integrated structure through welding, and the servo motor and the connecting rod form a rotating structure.

Preferably, the stamping plate and the clamping block are integrally formed by injection molding, the clamping block and the fixed rod form a movable structure through the clamping groove, and the size of the clamping block is matched with that of the clamping groove.

Preferably, the fixed rod and the sliding block form a telescopic structure through a connecting piece and a spring, the connecting piece and the spring are 1 group, 4 groups are provided, and each 2 groups are symmetrical with each other about the central line of the fixed rod.

Preferably, the sliding groove and the sliding rod form a sliding structure, and the fixing bolt vertically penetrates through the sliding groove.

Preferably, expanding spring's inboard is fixed with the horizontal pole, and the below of horizontal pole is provided with the transmission band, the internally mounted of transmission band has the motor, and the lower extreme at the transmission band back is connected with the support, the inboard of support is provided with the column base, the axis of rotation is installed at the center of punching press board, the back connection of cut-parts device body has the joint formula heat dissipation group.

Preferably, the fixed gasket and the cross rod form a movable structure through a telescopic spring, and the movable range of the fixed gasket is 0-5 cm.

Preferably, the combined heat dissipation group comprises a first heat dissipation net opening, an air suction pump, an air suction pipe and a second heat dissipation net opening, the first heat dissipation net opening is formed in the combined heat dissipation group, the air suction pump is installed on the inner side of the first heat dissipation net opening, the back of the air suction pump is connected with the air suction pipe, and the second heat dissipation net opening is arranged on the left side and the right side of the lower end of the air suction pipe.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the gravity ball is circular, the servo motor can drive the connecting rod to rotate left and right, so that the connecting rod drives the gravity ball to slide left and right at the upper end of the stamping plate, the gravity ball applies gravity pressure to the stamping plate, the stamping plate swings left and right through the rotating shaft, the stamping plate and the clamping block are integrally formed through injection molding, the clamping block at the lower end of the stamping plate can be clamped with the clamping groove in the swinging process of the stamping plate, and the force is applied to the fixed rod through the clamping of the clamping block and the clamping groove while the stamping plate swings and presses downwards.

2. The fixed rod of the invention forms a telescopic structure through the connecting sheet, the spring and the sliding block, the fixed rod is stressed to enable the connecting sheets at the two ends of the fixed rod to be telescopic and pressed downwards through the spring and the inside of the sliding block, so that the blade is contacted with the pole piece, the pole piece is cut by the blade, thereby completing the cutting work, after the cutting is completed, the clamping block and the clamping groove are clamped and separated through the swinging of the punching plate, so that the fixed rod is not stressed any more, the connecting sheets at the two ends of the fixed rod return to the original position through the internal springback of the spring and the sliding block, thereby the fixed rod can be recycled, and.

3. The sliding groove and the sliding rod form a sliding structure, the fixing bolt vertically penetrates through the inside of the sliding groove, the sliding block can slide through the sliding groove and the sliding rod according to the position required by cutting the pole piece, the position of the sliding block between the sliding rods is adjusted, and the fixing bolt penetrates through the inside of the sliding groove, so that the position between the sliding block and the sliding rod is fixed.

4. The fixed gaskets form a movable structure through the telescopic springs and the cross bars, so that the assembled pole pieces can be simultaneously fixed, a worker can clamp the capacitor pole pieces to be cut between the fixed gaskets, the fixed gaskets are limited by the length of the pole pieces and contract through the telescopic springs and the cross bars, and the positions of the pole pieces are fixed between the fixed gaskets through the elasticity of the telescopic springs.

5. The combined heat dissipation group comprises the first heat dissipation net opening, the air suction pump, the air suction pipe and the second heat dissipation net opening, when the heat dissipation speed of the second heat dissipation net opening cannot keep up with the working speed, the air suction pump in the combined heat dissipation group can be started, the air suction pump absorbs redundant heat through the air suction pipe and then discharges the heat through the first heat dissipation net opening, the double heat dissipation mode avoids the problem of untimely heat dissipation caused by the fact that the position between the servo motor and the hydraulic pump is tight, the service lives of the servo motor and the hydraulic pump are prolonged, heat dissipation outlets are dispersed, and the heat dissipation effect is better.

Drawings

FIG. 1 is a schematic diagram of the internal structure of a cutting device for producing a supercapacitor pole piece with a combined structure according to the present invention;

FIG. 2 is a schematic diagram of the back structure of a cutting device for producing a supercapacitor pole piece with a combined structure according to the present invention;

FIG. 3 is a schematic side view of a sliding block of a cutting device for producing a supercapacitor pole piece with a joint structure according to the present invention;

FIG. 4 is an enlarged schematic structural view of the interior of a sliding block of a cutting piece device for producing a supercapacitor pole piece with a combined structure, according to the invention;

FIG. 5 is an enlarged schematic structural view of a part A in FIG. 1 of a cutting piece device for producing a supercapacitor pole piece with a combined structure according to the present invention.

In the figure: 1. cutting-parts device body, 2, servo motor, 3, the connecting rod, 4, gravity ball, 5, the punching press board, 6, rubber parcel pad, 7, the punching press piece, 8, the hydraulic stem, 9, the hydraulic pump, 10, the block of block, 11, the block groove, 12, the dead lever, 13, the connection piece, 14, the spring, 15, the blade, 16, the sliding block, 17, the sliding tray, 18, the sliding rod, 19, fixing bolt, 20, the fixed shim, 21, expanding spring, 22, the horizontal pole, 23, the transmission band, 24, the motor, 25, the support, 26, the column foot, 27, the axis of rotation, 28, the combination formula heat dissipation group, 2801, first heat dissipation net gape, 2802, the aspiration pump, 2803, the aspiration channel, 2804, second heat dissipation net gape.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a cutting device with a combined structure for producing a pole piece of a super capacitor comprises a cutting device body 1, a servo motor 2, a connecting rod 3, a gravity ball 4, a stamping plate 5, a rubber wrapping pad 6, a stamping block 7, a hydraulic rod 8, a hydraulic pump 9, a clamping block 10, a clamping groove 11, a fixed rod 12, a connecting sheet 13, a spring 14, a blade 15, a sliding block 16, a sliding groove 17, a sliding rod 18, a fixed bolt 19, a fixed gasket 20, a telescopic spring 21, a cross rod 22, a transmission belt 23, a motor 24, a bracket 25, a column foot 26, a rotating shaft 27 and a combined heat dissipation group 28, wherein the servo motor 2 is installed inside the cutting device body 1, the connecting rod 3 is connected to the outer side of the servo motor 2, the gravity ball 4 is arranged at the lower end of the connecting rod 3, the stamping plate 5 is arranged at the lower end of the gravity ball 4, the gravity ball 4 is in a circular shape, and the, and the servo motor 2 and the connecting rod 3 form a rotating structure, the servo motor 2 can drive the connecting rod 3 to rotate left and right, so that the connecting rod 3 drives the gravity ball 4 to slide left and right on the upper end of the stamping plate 5, the gravity ball 4 applies gravity pressure on the stamping plate 5, so that the stamping plate 5 swings left and right through the rotating shaft 27, the rubber wrapping pads 6 are arranged on the left and right ends of the gravity ball 4, the upper end of the rubber wrapping pad 6 is fixed with the stamping block 7, the upper end of the stamping block 7 is connected with the hydraulic rod 8, the upper end of the hydraulic rod 8 is provided with the hydraulic pump 9, the lower end of the stamping plate 5 is provided with the clamping block 10, the lower end of the clamping block 10 is connected with the fixed rod 12, the stamping plate 5 and the clamping block 10 are integrally formed through injection molding, the clamping block 10 and the fixed rod 12 form a movable structure through the clamping groove 11, and the size between the clamping block 10 and the clamping groove 11 is matched, the clamping, the punching plate 5 swings and presses downwards, meanwhile, force is applied to the fixing rod 12 through the clamping of the clamping block 10 and the clamping groove 11, the clamping groove 11 is formed in the upper end of the fixing rod 12, and connecting sheets 13 are arranged at the left end and the right end of the fixing rod 12;

the lower end of the connecting piece 13 is connected with a spring 14, the lower end of the fixed rod 12 is fixed with a blade 15, the outer part of the fixed rod 12 is fixed with a sliding block 16, the fixed rod 12 forms a telescopic structure through the connecting piece 13 and the spring 14 and the sliding block 16, the connecting piece 13 and the spring 14 are 1 group and 4 groups, every 2 groups are mutually symmetrical about the central line of the fixed rod 12, the fixed rod 12 is stressed to enable the connecting piece 13 at the two ends of the fixed rod to be stretched and pressed down through the spring 14 and the inner part of the sliding block 16, so that the blade 15 is contacted with a pole piece, the pole piece is cut by the blade 15, so that the cutting work is completed, after the cutting is completed, the clamping block 10 and the clamping groove 11 are clamped and separated through the swinging of the punching plate 5, so that the fixed rod 12 is not stressed any more, the connecting pieces 13 at the two ends of the fixed rod, the working continuity of the cutting blade is ensured, the back of the sliding block 16 is provided with a sliding groove 17, the inner side of the sliding groove 17 is connected with a sliding rod 18, the sliding groove 17 and the sliding rod 18 form a sliding structure, a fixing bolt 19 vertically penetrates through the inside of the sliding groove 17, the sliding block 16 can slide with the sliding rod 18 through the sliding groove 17 according to the position required by cutting of a pole piece, the position of the sliding block 16 between the sliding rods 18 is adjusted, the fixing bolt 19 penetrates through the inside of the sliding groove 17, so that the position between the sliding block 16 and the sliding rod 18 is fixed, the fixing bolt 19 is embedded in the sliding groove 17, the left end and the right end of the cutting blade 15 are provided with fixing gaskets 20, and the inner sides of the fixing gaskets 20 are connected with telescopic springs 21;

a cross bar 22 is fixed on the inner side of the telescopic spring 21, a transmission belt 23 is arranged below the cross bar 22, the fixed gasket 20 and the cross bar 22 form a movable structure through the telescopic spring 21, the movable range of the fixed gasket is 0-5cm, 2 groups of fixed gaskets 20, the telescopic spring 21 and the cross bar 22 can fix 2 groups of pole pieces simultaneously, a worker can clamp a capacitor pole piece to be cut between the fixed gaskets 20, the fixed gasket 20 is limited by the length of the pole piece and can contract through the telescopic spring 21 and the cross bar 22, the position of the pole piece is fixed between the fixed gaskets 20 through the elasticity of the telescopic spring 21, a motor 24 is installed inside the transmission belt 23, a support 25 is connected to the lower end of the back of the transmission belt 23, a column foot 26 is arranged on the inner side of the support 25, a rotating shaft 27 is installed at the center of the stamping plate 5, and the combined heat dissipation group 28 comprises a first, An air suction pump 2802, an air suction pipe 2803 and a second heat dissipation net opening 2804, a first heat dissipation net opening 2801 is arranged inside the combined heat dissipation group 28, the air suction pump 2802 is arranged inside the first heat dissipation net opening 2801, and the back of the suction pump 2802 is connected with a suction pipe 2803, the left and right sides of the lower end of the suction pipe 2803 are provided with second heat dissipation net openings 2804, when the heat dissipation speed of the second heat dissipation net openings 2804 cannot keep up with the working speed, the getter pump 2802 inside the combined heat dissipation assembly 28 can be activated, the getter pump 2802 absorbs the excess heat through the suction pipe 2803, and then the heat is dissipated through the first heat dissipation mesh 2801, such dual heat dissipation mode has avoided the inseparable untimely problem of heat dissipation that causes in position between servo motor 2 and the hydraulic pump 9, has increased servo motor 2 and hydraulic pump 9's life, has disperseed radiating export, also makes the radiating effect better, and the back connection of cut-parts device body 1 has combined heat dissipation group 28.

The working principle of the embodiment is as follows: the cutting device with the combined structure for producing the super capacitor pole piece comprises a motor 24, wherein the motor 24 is started, the motor 24 drives a transmission belt 23 to rotate, the capacitor pole piece of a required cutting piece is transmitted to the inside of a cutting device body 1 from the previous production step through the transmission belt 23, a worker clamps the capacitor pole piece to be cut between fixing gaskets 20, the fixing gaskets 20 are limited by the length of the pole piece and are contracted through telescopic springs 21 and cross rods 22, the position of the pole piece is fixed between the fixing gaskets 20 through the elasticity of the telescopic springs 21, according to the position required by pole piece cutting, a sliding block 16 slides with a sliding rod 18 through a sliding groove 17, the position of the sliding block 16 between the sliding rods 18 is adjusted, a fixing bolt 19 penetrates through the inside of the sliding groove 17, and the position between the sliding block 16 and the sliding rod 18 is fixed, and the fixing gaskets 20 are fixed, The telescopic spring 21 and the cross rod 22 are provided with 2 groups, 2 groups of pole pieces can be fixed simultaneously, the servo motor 2 is started, the servo motor 2 drives the connecting rod 3 to rotate left and right, the connecting rod 3 drives the gravity ball 4 to slide left and right at the upper end of the stamping plate 5, the gravity ball 4 applies gravity pressure to the stamping plate 5, the stamping plate 5 swings left and right through the rotating shaft 27, the hydraulic pump 9 is started, the hydraulic pump 9 drives the hydraulic rod 8 to extend downwards, the hydraulic rod 8 drives the stamping block 7 to apply pressure to the stamping plate 5, the rubber wrapping pad 6 protects friction force caused by stamping between the stamping block 7 and the stamping plate 5 from abrasion to the stamping plate 5, the 2 groups of hydraulic rods 8 extend downwards according to the swinging direction of the gravity ball 4, stability of the pressure applied to the stamping plate 5 by the gravity ball 4 is improved, the same stress between the two groups is ensured, the clamping block 10 at the lower end of the stamping plate 5 is clamped with the clamping groove 11 in the swinging, the fixed rod 12 is pressed by the clamping block 10 and the clamping groove 11 when the punching plate 5 swings and presses downwards, the connecting sheets 13 at two ends of the fixed rod 12 are stretched and pressed downwards through the springs 14 and the sliding block 16 when the fixed rod 12 is pressed, the blades 15 are contacted with the pole pieces, the pole pieces are cut by the blades 15, the cutting work is finished, the clamping between the clamping block 10 and the clamping groove 11 is separated through the swinging of the punching plate 5 after the cutting is finished, the fixed rod 12 is not stressed any more, the connecting sheets 13 at two ends of the fixed rod 12 are rebounded and returned through the springs 14 and the sliding block 16, the position of the cutting piece device body 1 can be stabilized through the bracket 25 and the column foot 26, the position between the servo motor 2 and the hydraulic pump 9 is compact, the heat generated during the working operation can be dissipated from the second heat dissipation net opening 2804, when the heat dissipation speed of the second heat dissipation net opening 2804 cannot keep up with the working speed, the inside aspirator pump 2802 of combination formula heat dissipation group 28 starts, aspirator pump 2802 absorbs unnecessary heat through aspiration channel 2803, again with the heat through first heat dissipation net gape 2801 row scattered, the problem that the position between servo motor 2 and the hydraulic pump 9 closely caused the heat dissipation untimely has been avoided to such dual heat dissipation mode, servo motor 2 and hydraulic pump 9's life has been increased, the radiating export has been dispersed, also make the radiating effect better, this is exactly this has the theory of operation of the cut-parts device for supercapacitor pole piece production of joint structure.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a cut-parts device is used in ultracapacitor system pole piece production with joint structure, includes cut-parts device body (1) and rubber package pad (6), its characterized in that: the cutting device comprises a cutting device body (1), wherein a servo motor (2) is installed inside the cutting device body (1), a connecting rod (3) is connected to the outer side of the servo motor (2), a gravity ball (4) is arranged at the lower end of the connecting rod (3), a stamping plate (5) is arranged at the lower end of the gravity ball (4), rubber wrapping pads (6) are arranged at the left end and the right end of the gravity ball (4), stamping blocks (7) are fixed at the upper end of the rubber wrapping pads (6), a hydraulic rod (8) is connected at the upper end of each stamping block (7), a hydraulic pump (9) is installed at the upper end of each hydraulic rod (8), clamping blocks (10) are arranged at the lower end of each stamping plate (5), a fixing rod (12) is connected at the lower end of each clamping block (10), clamping grooves (11) are formed in the upper end of each fixing rod (12), and connecting, the lower extreme of connection piece (13) is connected with spring (14), the lower extreme of dead lever (12) is fixed with blade (15), and the outside of dead lever (12) is fixed with sliding block (16), the back of sliding block (16) is provided with sliding tray (17), and the inboard of sliding tray (17) is connected with slide bar (18), the inside embedding of sliding tray (17) has fixing bolt (19), both ends settle about blade (15) has fixing gasket (20), and the inboard of fixing gasket (20) is connected with expanding spring (21).

2. The cut-parts device is used in ultracapacitor system pole piece production with joint structure of claim 1 characterized in that: the gravity ball (4) is in a circular shape, the gravity ball (4) and the connecting rod (3) form an integrated structure through welding, and the servo motor (2) and the connecting rod (3) form a rotating structure.

3. The cut-parts device is used in ultracapacitor system pole piece production with joint structure of claim 1 characterized in that: the stamping plate (5) and the clamping block (10) are integrally formed through injection molding, the clamping block (10) and the fixed rod (12) form a movable structure through the clamping groove (11), and the size of the clamping block (10) is matched with that of the clamping groove (11).

4. The cut-parts device is used in ultracapacitor system pole piece production with joint structure of claim 1 characterized in that: the fixing rod (12) and the sliding block (16) form a telescopic structure through a connecting piece (13) and a spring (14), the connecting piece (13) and the spring (14) are 1 group, 4 groups are provided in total, and every 2 groups are mutually symmetrical about the central line of the fixing rod (12).

5. The cut-parts device is used in ultracapacitor system pole piece production with joint structure of claim 1 characterized in that: the sliding groove (17) and the sliding rod (18) form a sliding structure, and the fixing bolt (19) vertically penetrates through the sliding groove (17).

6. The cut-parts device is used in ultracapacitor system pole piece production with joint structure of claim 1 characterized in that: the inboard of expanding spring (21) is fixed with horizontal pole (22), and the below of horizontal pole (22) is provided with transmission band (23), the internally mounted of transmission band (23) has motor (24), and the lower extreme at the transmission band (23) back is connected with support (25), the inboard of support (25) is provided with column base (26), axis of rotation (27) are installed at the center of punching press board (5), the back connection of cut-parts device body (1) has joint formula heat dissipation group (28).

7. The cut-parts device is used in ultracapacitor system pole piece production with joint structure of claim 6, characterized in that: the fixed gasket (20) and the cross rod (22) form a movable structure through a telescopic spring (21), and the movable range of the movable structure is 0-5 cm.

8. The cut-parts device is used in ultracapacitor system pole piece production with joint structure of claim 7, characterized in that: combined heat dissipation group (28) is including first heat dissipation net gape (2801), aspirator pump (2802), aspiration channel (2803) and second heat dissipation net gape (2804), and the inside of combined heat dissipation group (28) is provided with first heat dissipation net gape (2801), aspirator pump (2802) are installed to the inboard of first heat dissipation net gape (2801), and the back connection of aspirator pump (2802) has aspiration channel (2803), the left and right sides of aspiration channel (2803) lower extreme settles second heat dissipation net gape (2804).