CN209954583U

CN209954583U - Fog lamp cover plate press-fitting device

Info

Publication number: CN209954583U
Application number: CN201920622822.1U
Authority: CN
Inventors: 李麟
Original assignee: Hangzhou Kai Pu Technology Co Ltd
Current assignee: Zhejiang Kaipu Technology Co.,Ltd.
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-01-17
Anticipated expiration: 2029-04-30

Abstract

The utility model discloses a fog lamp cover plate press-fitting device, relating to the technical field of press-fitting devices; including the landing slab, the rigid coupling has lower anchor clamps module on the landing slab, and landing slab upside rigid coupling has the stand, and stand top rigid coupling has the mounting panel, wear to be equipped with the depression bar on the mounting panel and with depression bar sliding connection, the mounting panel downside is equipped with the clamp plate, is equipped with drive arrangement on the mounting panel, and clamp plate downside rigid coupling has a plurality of extrusion pieces, and extrusion piece downside is equipped with positioning groove, and the clamp plate downside is equipped with first clamp splice subassembly and the second clamp splice subassembly that is used for the centre gripping trim. The utility model discloses utilize first clamp splice and second clamp splice to press from both sides the trim tightly, utilize stopper location apron, utilize the pressure equipment piece to support the apron, the clamp plate is with the trim pressure equipment on the apron.

Description

Fog lamp cover plate press-fitting device

Technical Field

The utility model belongs to pressure equipment device field, in particular to fog lamp apron pressure equipment device.

Background

And the press fitting is to press the two workpieces which are in interference fit together. The existing press-fitting device comprises an upper tool clamp and a lower tool clamp, wherein the upper tool clamp fixes one workpiece, the lower tool clamp fixes the other workpiece, and then the upper tool clamp moves downwards under the action of a driving device so as to press-fit the two workpieces together. The fog lamp cover plate is usually required to be pressed with the decorative strips on the surface, the lower tool clamp is used for fixing the cover plate, and the upper tool clamp is used for fixing the decorative strips. The existing press-fitting device is often more capable of fixing and press-fitting only the tubular structure, but not capable of press-fitting the fog lamp cover plate and other special-shaped flat plate structures.

Chinese patent No. CN208342669U, patent name "press fitting jig and press fitting system including the same"; a press fitting jig and a press fitting system including the same are disclosed. The press-fitting fixture is used for realizing press-fitting of the protective pipe and the end cover and comprises a base, a cover plate, two groups of guide posts, a first positioning piece and a second positioning piece. The cover plate is arranged opposite to the base. Towards the one end and the base fixed connection of base in the guide post, the apron wears to locate the one end of keeping away from the base in the guide post, and the apron can switch between primary importance and second place for the guide post. The first positioning piece is arranged at one end, facing the cover plate, of the base, the second positioning piece is arranged at one end, facing the base, of the cover plate, and the center of the first positioning piece coincides with the center of the second positioning piece. When the protective tube is located at the first position, the protective tube is tightly pressed with the end cover. In the second position, the shroud is separated from the end cap. Although the centering of the protective tube and the cover plate can be conveniently and reliably realized; but the special-shaped flat plate structures such as fog lamp cover plates and the like cannot be pressed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming prior art and can not carrying out the shortcoming of pressure equipment to dysmorphism flat plate class structures such as fog lamp apron, providing one kind and utilizing first clamp splice and second clamp splice to press from both sides the trim tightly, utilize stopper location apron, utilize the pressure equipment piece to support the apron, the pressure equipment device of clamp plate with the trim pressure equipment on the apron.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a fog lamp apron pressure equipment device, includes the landing slab, the rigid coupling has down the anchor clamps module on the landing slab, anchor clamps module includes first module board down, first module board rigid coupling is on the landing slab, the rigid coupling has a plurality of stoppers that are used for fixing a position the apron on the first module board, the stopper is located the apron and supports all around and lean on the apron, the rigid coupling has a plurality of pressure equipment pieces on the first module board, the pressure equipment piece includes the main part, main part bottom rigid coupling is on first module board, the main part top is equipped with the spout, sliding connection has the slider in the spout, the main part top is equipped with two supports, support bottom rigid coupling is in the main part, the support is located the relative both sides of spout, be equipped with two pressure equipment pieces between the support, one of them limit of two pressure equipment pieces is close to each other and is parallel, and the planar contained angle in two pressure equipment pieces place is the, two sides of two press-fitting pieces close to each other are hinged on supports on two sides of the press-fitting pieces, the lower sides of the press-fitting pieces are abutted against the top ends of sliding blocks, guide slopes are arranged at the bottom ends of the sliding blocks, adjusting bolts are connected with threads on one side of the main body, studs of the adjusting bolts are positioned in sliding grooves and abutted against the guide slopes, stand columns are fixedly connected to the upper sides of the platform plates, a support plate is fixedly connected to the top ends of the stand columns, press rods penetrate through the support plate and are in sliding connection with the press rods, a press plate is arranged on the lower side of the support plate, the bottom ends of the press rods are fixedly connected to the press plate, a driving device for driving the press rods to move along the axial direction of the press rods is arranged on the support plate, a plurality of extrusion blocks are fixedly connected to the lower side of the press plate, positioning grooves are arranged on the lower side of the extrusion blocks, a, the driving device is connected with a controller. The landing slab plays the effect of support, and the stopper plays the effect of location apron, and stopper and pressure equipment piece make things convenient for the change of anchor clamps through first module board rigid coupling on the landing slab, realize the modularization, rotate adjusting bolt and can change the pressure equipment angle, make things convenient for the different apron of pressure equipment, in the pressure equipment, the extrusion piece is corresponding with pressure equipment piece position, under the extrusion of extrusion piece, the trim is in the same place with the apron pressure equipment.

Preferably, the platform board is provided with a first photoelectric sensor on one side of the first module board, the lower side surface of the pressing board is provided with a second photoelectric sensor, the first photoelectric sensor is connected with the controller, and the second photoelectric sensor is connected with the controller. First photoelectric sensor and second photoelectric sensor are used for detecting the material, when the trim does not put in place with the apron, the utility model discloses can't start, prevent the pressure equipment failure.

Preferably, the chute is of a rectangular parallelepiped configuration. The slider is prevented from rotating when sliding.

Preferably, the pressure lever is sleeved with a guide sleeve, the guide sleeve is connected with the pressure lever in a sliding mode, and the guide sleeve is fixedly connected to the support plate. The guide sleeve increases the stability when the pressure bar slides up and down.

Preferably, a connecting plate is arranged above the support plate, the top end of the pressure rod is fixedly connected to the connecting plate, a first stop block and a second stop block are arranged on the upper side of the support plate, a stop bolt and a travel switch are arranged on the connecting plate in a penetrating mode, the stop bolt corresponds to the first stop block in position, the travel switch corresponds to the second stop block in position, the stop bolt is in threaded fit with the connecting plate, the travel switch comprises a body and a push rod, the body of the travel switch is cylindrical, the main body of the travel switch is in threaded fit with the connecting plate, the push rod of the travel switch faces the direction of the second stop block, and the travel switch is connected with the controller. The connecting plate can increase the stability of depression bar, and first stop block and second stop block are used for the spacing of depression bar, and travel switch can send the signal to the controller, realizes automaticly.

Preferably, the driving device is an air cylinder, the air cylinder comprises a cylinder barrel and a piston rod, the bottom of the cylinder barrel is fixedly connected to the support plate, the piston rod penetrates through the support plate, the bottom end of the piston rod is fixedly connected with the pressing plate, and the air cylinder is connected with the controller. The support plate provides reaction force and has simple structure.

Preferably, the first clamping block assembly comprises a first adjusting block fixedly connected to the lower side surface of the pressing plate, the first adjusting block is provided with a first adjusting column close to the direction of the pressing block, the top end of the first adjusting column is slidably connected to the lower side surface of the pressing plate, the bottom end of the first adjusting column is provided with a bulge, the first adjusting column is sequentially sleeved with a first adjusting nut, a first clamping block and a first spring, the first spring is positioned between the first clamping block and the bulge, the first adjusting nut is abutted against the first clamping block, the first adjusting nut is in threaded fit with the first adjusting column, one end of the first spring is abutted against the first clamping block, the other end of the first spring is abutted against the bulge, a first screw rod is penetrated through the first adjusting block, the end of the first screw rod is abutted against the first adjusting column, the second clamping block assembly comprises a second adjusting block, the second adjusting block is fixedly connected to the lower side surface of the pressing plate, a second adjusting column is arranged on the second adjusting block close to the direction of the extrusion block, the top end of the second adjusting column is slidably connected to the lower side surface of the pressing plate, a second bulge is arranged at the bottom end of the second adjusting column, a second adjusting nut, a second clamping block and a second spring are sequentially sleeved on the second adjusting column, the second spring is positioned between the second clamping block and the second bulge, the second adjusting nut is abutted against the second clamping block, the second adjusting nut is in threaded fit with the second adjusting column, one end of the second spring is abutted against the second clamping block, the other end of the second spring is abutted against the second bulge, a slot is arranged on one side of the second adjusting block close to the second adjusting column, an insertion rod is slidably connected in the slot, one end of the insertion rod is positioned in the slot, and the other end of the insertion rod is fixedly connected with the second adjusting column, the clamping device is characterized in that a third spring is arranged in the slot, one end of the third spring is abutted against the end part of the slot, the other end of the third spring is connected to one end, located in the slot, of the inserted rod, and second positioning grooves are formed in the sides, close to the extrusion block, of the first clamping block and the second clamping block. The first screw rod is rotated to push the first adjusting column to slide, so that the first clamping block is driven to move, the decorative strips with different lengths can be clamped conveniently, under the action of the third spring, the decorative strips are clamped by the first clamping block and the second clamping block, the decorative strips can be taken and placed only by compressing the third spring, and the efficiency is high.

The utility model has the advantages that: the utility model discloses utilize first clamp splice and second clamp splice to press from both sides the trim tightly, utilize stopper location apron, utilize the pressure equipment piece to support the apron, the clamp plate is with the trim pressure equipment on the apron.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a platen;

FIG. 3 is a schematic view of the platen;

FIG. 4 is a cross-sectional view A-A of FIG. 1;

FIG. 5 is a cross-sectional view of the press-fitting block taken along the axis of the body;

FIG. 6 is a cross-sectional view C-C of FIG. 5;

FIG. 7 is a cross-sectional view B-B of FIG. 1;

FIG. 8 is a bottom view of the platen;

FIG. 9 is a cross-sectional view D-D of FIG. 8;

FIG. 10 is a schematic structural view of a cover plate;

FIG. 11 is a cross-sectional view E-E of FIG. 10;

FIG. 12 is a schematic view of the structure of the molding;

FIG. 13 is a schematic cross-sectional view of a molding;

FIG. 14 is a schematic structural view of the cover plate and the molding after press-fitting;

FIG. 15 is a schematic view of the cover plate being mounted to the deck plate;

fig. 16 is a schematic view before press-fitting.

In the figure: the device comprises a platform plate 1, platform legs 2, a first module plate 3, a cover plate 4, a limiting block 5, a supporting block 6, a press-fitting block 7, a first photoelectric sensor 8, a main body 9, a sliding groove 10, a sliding block 11, a support 12, a press-fitting piece 13, a guide slope 14, an adjusting bolt 15, a stand column 16, a support plate 17, a pressing rod 18, a guide sleeve 19, a pressing plate 20, a connecting plate 21, a first stop block 22, a second stop block 23, a stop bolt 24, a travel switch 25, an extrusion block 26, a positioning groove 27, a first adjusting block 28, a first adjusting column 29, a protrusion 31, a first clamping block 32, a first spring 33, a first adjusting nut 34, a first screw 35, a second adjusting block 36, a second adjusting column 37, a second adjusting nut 38, a second clamping block 39, a second spring 40, a second protrusion 41, a slot 42, an inserting rod 43, a second positioning groove 44, a second photoelectric sensor 45, an air cylinder 46, a press-fitting protrusion 47, And a decorative strip 48.

Detailed Description

The invention will be further explained in detail with reference to the drawings and the following detailed description:

example (b):

FIGS. 1 to 9 show a fog lamp cover plate press-fitting device, which comprises a platform plate 1, wherein a plurality of platform legs 2 are fixedly connected to the lower side of the platform plate 1, a lower clamp module is bolted on the upper side of the platform plate 1, the lower clamp module comprises a first module plate 3, the first module plate 3 is abutted against the platform plate 1, the first module plate 3 is bolted with the platform plate 1, a plurality of limit blocks 5 for positioning the cover plate 4 are bolted on the first module plate 3, the limit blocks 5 are positioned around the cover plate 4 and abutted against the cover plate 4, a plurality of support blocks 6 and a plurality of press-fitting blocks 7 are bolted on the first module plate 3, a first photoelectric sensor 8 is arranged on one side of the first module plate 3 of the platform plate 1, the press-fitting blocks 7 comprise a main body 9, the bottom of the main body 9 is bolted on the first module plate 3, a chute 10 is arranged on the top of the main body 9, the chute 10 is of a cuboid structure, a slide, the top of the main body 9 is provided with two parallel supports 12, the bottom ends of the supports 12 are fixedly connected to the main body 9, the supports 12 are positioned on two opposite sides of the sliding groove 10, two press-mounting pieces 13 are arranged between the supports 12, one side of each of the two press-mounting pieces 13 is close to and parallel to each other, the included angle of the plane where the two press-mounting pieces 13 are positioned is a press-mounting angle, two sides of each of the two press-mounting pieces 13, which are close to each other, are hinged to the top ends of the supports 12 on two sides of the press-mounting piece 13, the lower side of the press-mounting piece 13 abuts against the top end of the sliding block 11, the bottom end of the sliding block 11 is provided with a guide slope 14, one side of the main body 9 is in threaded connection with an adjusting bolt 15, the adjusting bolt 15 comprises a stud, the stud of the adjusting bolt 15 is positioned in the sliding groove 10 and abuts against the guide slope 14, the, two pressure levers 18 are arranged on a support plate 17 in a penetrating manner, the pressure levers 18 are connected with the support plate 17 in a sliding manner, guide sleeves 19 are sleeved on the pressure levers 18, the guide sleeves 19 are fixedly connected with the support plate 17, a pressure plate 20 is arranged on the lower side of the support plate 17, a connecting plate 21 is arranged on the upper side of the support plate 17, the bottom ends of the pressure levers 18 are fixedly connected with the upper side of the pressure plate 20, the top ends of the pressure levers 18 are fixedly connected with the lower side of the connecting plate 21, a first stop block 22 and a second stop block 23 are arranged on the upper side of the support plate 17, a stop bolt 24 and a travel switch 25 are arranged on the connecting plate 21 in a penetrating manner, the stop bolt 24 corresponds to the first stop block 22, the travel switch 25 corresponds to the second stop block 23, the stop bolt 24 is in threaded fit with the connecting plate 21, the travel switch 25 is a direct-action travel switch, the, the push rod of the travel switch 25 faces the direction of the second stop block 23, the support plate is provided with a driving device for driving the press rod to move along the axial direction, the driving device is an air cylinder 46, the air cylinder 46 comprises a cylinder barrel and a piston rod, the bottom end of the cylinder barrel is fixedly connected on the support plate 17, the piston rod penetrates through the support plate 17, the bottom end of the piston rod is fixedly connected with the press plate 20, the cylinder barrel penetrates through the connecting plate 21, the lower side surface of the press plate 20 is fixedly connected with a plurality of extrusion blocks 26, one side of the extrusion block 26, which is close to the first module plate 3, is provided with a positioning groove 27, a first clamping block component and a second clamping block component are arranged on the lower side surface of the press plate 20, the extrusion blocks are positioned between the first clamping block component and the second clamping block component, the first clamping block component comprises a first adjusting block 28, the first adjusting block 28 is fixedly connected on the lower side surface of the press plate 20, the bottom end of the first adjusting column 29 is provided with a bulge 31, the first adjusting column 29 is sequentially sleeved with a first adjusting nut 34, a first clamping block 32 and a first spring 33, the first spring 33 is positioned between the first clamping block 32 and the bulge 31, the first adjusting nut 34 is abutted against the first clamping block 32, the first adjusting nut 34 is in threaded fit with the first adjusting column 29, one end of the first spring 33 is abutted against the first clamping block 32, the other end of the first spring 33 is abutted against the bulge 31, the first adjusting block 28 is penetrated with a first screw 35, the end part of the first screw 35 is abutted against the first adjusting column 29, the second clamping block assembly comprises a second adjusting block 36, the second adjusting block 36 is fixedly connected to the lower side surface of the pressing plate 20, the second adjusting block 36 is provided with a second adjusting column 37 close to the direction of the extrusion block, the top end of the second adjusting column 37 is slidably connected to the lower side surface of the pressing plate 20, the bottom end of the second adjusting column 37 is provided with a second bulge 41, a second adjusting nut 38, a second clamping block 39 and a second spring 40 are sequentially sleeved on the second adjusting column 37, the second spring 40 is positioned between the second clamping block 39 and a second bulge 41, the second adjusting nut 38 abuts against the second clamping block 39, the second adjusting nut 38 is in threaded fit with the second adjusting column 37, one end of the second spring 40 abuts against the second clamping block 39, the other end of the second spring 40 abuts against the second bulge 41, one side, close to the second adjusting column 37, of the second adjusting block 36 is provided with a slot 42, the slot 42 is internally and slidably connected with an inserted rod 43, one end of the inserted rod 43 is positioned in the slot 42, the other end of the inserted rod 43 is fixedly connected with the second adjusting column 37, a third spring is arranged in the slot 42, one end of the third spring abuts against the end of the slot 42, the other end of the third spring is connected with one end, positioned in the slot 42, one sides, close to the extrusion blocks, of the first clamping block 32 and the second clamping block 39 are provided with a second positioning groove 44, the lower side surface of the pressing plate 20 is provided with a second photoelectric sensor 45, the first photoelectric sensor 8 is connected with a controller, the second photoelectric sensor 45 is connected with the controller, the travel switch 25 is connected with the controller, and the air cylinder 46 is connected with the controller.

The utility model discloses the use:

the cover plate is a fog lamp cover plate, the structural schematic diagram of the cover plate is shown in fig. 10, a decorative strip 48 needs to be pressed on the cover plate, the structural schematic diagram of the decorative strip is shown in fig. 12, the cross section schematic diagram of the cover plate is shown in fig. 11, the cover plate comprises a strip-shaped pressing protrusion 47, the cross section of the pressing protrusion is in a V shape, the cross section schematic diagram of the decorative strip is shown in fig. 13, the cross section of the decorative strip is also in a V shape, the decorative strip and the cover plate finally need to be pressed together, and as shown in fig. 14, a pressing block is located below the pressing protrusion in the pressing process.

Before press fitting, the cover plate is placed on the platform plate, as shown in fig. 15, the edge of the cover plate is abutted against the limiting block, the adjusting bolt is rotated, the adjusting bolt pushes the guide slope, the slide block slides along the slide groove under the action of the guide slope, the press fitting sheet is rotated under the action of the slide block, the press fitting angle is changed, the press fitting angle is finally adjusted to be matched with the shape of the press fitting protrusion by rotating the adjusting bolt, then the decoration strip is abutted against the lower side of the extrusion block, the surface of the decoration strip is embedded into the positioning groove, the first screw rod is rotated, the first screw rod pushes the first adjusting column to slide, the first adjusting column drives the first clamping block to move towards the decoration strip direction, meanwhile, the first adjusting nut is rotated, the first clamping block is driven to move up and down by the first adjusting nut, the second positioning groove on the first clamping block is aligned with the end of the decoration strip, and finally, the end of the decoration, similarly, the second adjusting nut is rotated, under the action of the third spring, the end part of the decorative strip is embedded into the second positioning groove of the second clamping block, the decorative strip is clamped by the first clamping block and the second clamping block, as shown in fig. 16, at this time, the first photoelectric sensor and the second photoelectric sensor detect that the material is put in place, send a ready signal to the controller, operate the controller, the controller controls the cylinder to operate, the cylinder drives the pressing rod to press down, when the stop bolt abuts against the first stop block, the decoration strip is pressed on the press-fitting protrusion of the cover plate, meanwhile, a push rod of the travel switch is slightly pushed by the second stop block, the travel switch sends a signal to the controller, the controller controls the air cylinder to move reversely, the air cylinder drives the pressing plate to move upwards, the cover plate after press fitting is completed is taken up by the pressing plate, an operator compresses the third spring, and the finished product can be taken down conveniently.

Claims

1. A fog lamp cover plate press-fitting device comprises a platform plate and is characterized in that a lower clamp module is fixedly connected to the platform plate and comprises a first module plate fixedly connected to the platform plate, a plurality of limiting blocks for positioning the cover plate are fixedly connected to the first module plate and located around the cover plate and abutted to the cover plate, a plurality of press-fitting blocks are fixedly connected to the first module plate and comprise a main body, the bottom of the main body is fixedly connected to the first module plate, a sliding groove is formed in the top of the main body, a sliding block is slidably connected to the sliding groove, two supports are arranged at the top of the main body, the bottom of each support is fixedly connected to the main body, the supports are located on two opposite sides of the sliding groove, two press-fitting pieces are arranged between the supports, one side of the two press-fitting pieces is close to and parallel to each other, and the included angle of the planes of the two press-fitting pieces is a press-fitting angle, two sides of two press-fitting pieces close to each other are hinged on supports on two sides of the press-fitting pieces, the lower sides of the press-fitting pieces are abutted against the top ends of sliding blocks, guide slopes are arranged at the bottom ends of the sliding blocks, adjusting bolts are connected with threads on one side of the main body, studs of the adjusting bolts are positioned in sliding grooves and abutted against the guide slopes, stand columns are fixedly connected to the upper sides of the platform plates, a support plate is fixedly connected to the top ends of the stand columns, press rods penetrate through the support plate and are in sliding connection with the press rods, a press plate is arranged on the lower side of the support plate, the bottom ends of the press rods are fixedly connected to the press plate, a driving device for driving the press rods to move along the axial direction of the press rods is arranged on the support plate, a plurality of extrusion blocks are fixedly connected to the lower side of the press plate, positioning grooves are arranged on the lower side of the extrusion blocks, a, the driving device is connected with a controller.

2. The fog lamp cover plate press-fitting device as claimed in claim 1, wherein the platform plate is provided with a first photoelectric sensor on one side of the first module plate, and a second photoelectric sensor on the lower side of the pressing plate, the first photoelectric sensor is connected with the controller, and the second photoelectric sensor is connected with the controller.

3. The fog lamp cover plate press-fitting device as claimed in claim 1, wherein the sliding groove is of a rectangular parallelepiped structure.

4. The fog lamp cover plate press-fitting device as claimed in claim 1, wherein the pressing rod is sleeved with a guide sleeve, the guide sleeve is slidably connected with the pressing rod, and the guide sleeve is fixedly connected to the support plate.

5. The fog lamp cover plate press-fitting device as claimed in claim 1, wherein a connecting plate is arranged above the support plate, the top end of the pressure rod is fixedly connected to the connecting plate, a first stop block and a second stop block are arranged on the upper side of the support plate, a stop bolt and a travel switch are arranged on the connecting plate in a penetrating manner, the stop bolt corresponds to the first stop block, the travel switch corresponds to the second stop block, the stop bolt is in threaded fit with the connecting plate, the travel switch comprises a body and a push rod, the body of the travel switch is cylindrical, the main body of the travel switch is in threaded fit with the connecting plate, the push rod of the travel switch faces the second stop block, and the travel switch is connected with the controller.

6. The fog lamp cover plate press-fitting device as claimed in claim 1, wherein the driving device is a cylinder, the cylinder comprises a cylinder barrel and a piston rod, the bottom of the cylinder barrel is fixedly connected to the support plate, the piston rod penetrates through the support plate, the bottom end of the piston rod is fixedly connected to the pressing plate, and the cylinder is connected to the controller.

7. The fog lamp cover plate press-fitting device as claimed in claim 1, 2, 3, 4, 5 or 6, wherein the first clamping block assembly comprises a first adjusting block fixedly connected to the lower side surface of the pressing plate, the first adjusting block is provided with a first adjusting post near the direction of the pressing block, the top end of the first adjusting post is slidably connected to the lower side surface of the pressing plate, the bottom end of the first adjusting post is provided with a protrusion, the first adjusting post is sequentially sleeved with a first adjusting nut, a first clamping block and a first spring, the first spring is located between the first clamping block and the protrusion, the first adjusting nut is abutted against the first clamping block, the first adjusting nut is in threaded fit with the first adjusting post, one end of the first spring is abutted against the first clamping block, the other end of the first spring is abutted against the protrusion, the first adjusting block is provided with a first screw rod, the end part of the first screw rod is supported against the first adjusting column, the second clamping block component comprises a second adjusting block, the second adjusting block is fixedly connected to the lower side surface of the pressing plate, the second adjusting block is provided with a second adjusting column near the direction of the extruding block, the top end of the second adjusting column is slidably connected to the lower side surface of the pressing plate, the bottom end of the second adjusting column is provided with a second bulge, a second adjusting nut, a second clamping block and a second spring are sequentially sleeved on the second adjusting column, the second spring is positioned between the second clamping block and the second bulge, the second adjusting nut is supported against the second clamping block, the second adjusting nut is in threaded fit with the second adjusting column, one end of the second spring is supported against the second clamping block, the other end of the second spring is supported against the second bulge, one side of the second adjusting block, a slot is arranged near the second adjusting column, and an inserting rod is slidably connected in the slot, one end of the inserted bar is located in the slot, the other end of the inserted bar is fixedly connected with the second adjusting column, a third spring is arranged in the slot, one end of the third spring abuts against the end portion of the slot, the other end of the third spring is connected to one end, located in the slot, of the inserted bar, and a second positioning groove is formed in one side, close to the extrusion block, of the first clamping block and one side, close to the extrusion block, of the second clamping block.