CN111633456A - a clamping tool - Google Patents

Abstract

The invention relates to the technical field of jigs, in particular to a clamping jig, comprising a base, an upper die base, a lower die base located between the upper die base and the base, and an elastic connection connected to the upper die base and the lower die base parts, a clamping driver installed on the base and used to drive the lower die base close to the upper die base, a limiter installed on the base, an upper template set on the side of the upper die base close to the lower die base, and a lower die set The lower mold plate on the side of the seat close to the upper mold plate and the elastic piece arranged between the upper mold plate and the upper mold seat. The limiting member is provided with a limiting groove, and the pressing portion penetrates the limiting groove. The invention can automatically adapt to batteries of different thicknesses and hold them stably, without damaging the batteries, and has good versatility. Precision and quality of battery processing.

Description

a clamping tool

technical field

The invention relates to the technical field of jigs, in particular to a clamping jig.

Background technique

In industrial production, the jig is often required to carry the material to different processing equipment, and the material carried by the jig is processed through different processing equipment. Although the existing jig can clamp the material, when the material is When the thickness is different, it is easy to pinch the material, or the material cannot be clamped, resulting in the material being loose on the fixture, and the height position of the material on the fixture is fixed, which is not convenient for external equipment to carry out the material carried by the fixture. processing. Therefore, the defects are very obvious, and there is an urgent need to provide a solution.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problems, the purpose of the present invention is to provide a clamping jig, which can automatically adapt to batteries of different thicknesses and hold them stably without damaging the batteries through ingenious design of the clamping jig. It is strong, versatile, and has a wide range of use. The driving reference plane is the working reference plane, which makes the downward movement accuracy of the reference plane high, which is conducive to improving the accuracy and quality of battery processing by external processing equipment.

In order to achieve the above object, the present invention adopts the following technical solutions:

A clamping fixture, which comprises a base, an upper die base arranged up and down on the base, a lower die base located between the upper die base and the base, an elastic connecting piece connected to the upper die base and the lower die base, and a The base is also used to drive the lower die base to be close to the upper die base. The lower mold plate on the side and the elastic piece arranged between the upper mold plate and the upper mold seat, the upper mold seat is slidably connected with the base via the guide assembly, the lower mold seat is slidably connected with the guide assembly, and the lower mold seat is provided with A pressing portion, the limiting member defines a limiting slot, and the pressing portion penetrates the limiting slot.

Further, the elastic connecting piece includes a fixing seat and a tension spring, the fixing seat is installed on the lower die seat, the fixing seat is provided with an accommodating cavity, and one end of the tension spring is connected with the bottom wall of the accommodating cavity , the other end of the tension spring is connected with the upper die seat.

Further, a suction nozzle is embedded in the lower template.

Further, the lower die base is provided with an air passage, one end of the air passage is communicated with the suction nozzle, and the other end of the air passage is exposed on the pressing surface of the pressing portion.

Further, the guide assembly includes a guide rod, a guide sleeve and a limit cover, the top end of the guide rod is installed on the upper die seat, the guide sleeve is installed on the base, and the guide rod is slidably connected with the guide sleeve, so The limit cover is installed at the bottom end of the guide rod, and the limit cover is located below the base.

Further, the top of the limiting member is provided with an adjusting member, and the bottom end of the adjusting member protrudes into the limiting groove.

Further, a handle is provided on the top of the upper die base.

Further, the number of the upper templates is multiple, and the multiple upper templates are arranged opposite to the lower templates.

Further, the clipping driver includes a guide seat, a guide cylinder, a compression spring and a lock piece, the bottom end of the guide seat is installed on the base, the top end of the guide seat is provided with a guide hole, and the top end of the guide cylinder is provided with a guide hole. Connected with the lower die base, the bottom end of the guide cylinder protrudes into the guide hole, one end of the compression spring contacts the bottom wall of the guide hole, the other end of the compression spring contacts the inner wall of the guide cylinder, and the lock is used for Limit the guide cylinder to the guide seat.

Further, the upper die base is connected with the upper template via a positioning guide, the positioning guide includes a nut part, a guide column part and a threaded part connected in sequence, the threaded part is threadedly connected with the upper template, and the guide The column part is slidably connected with the upper die base, and the nut part is used to abut against the top surface of the upper die base.

Beneficial effects of the present invention: The present invention can automatically adapt to batteries of different thicknesses and hold them firmly through ingenious design of the clamping jig, without damaging the batteries, with strong practicability, good versatility, wide application range, and driving The datum plane is the working datum plane, so that the downward movement accuracy of the datum plane is high, which is beneficial to improve the accuracy and quality of battery processing by external processing equipment.

Description of drawings

FIG. 1 is a schematic three-dimensional structure diagram of the present invention and a driving device in a working state.

FIG. 2 is a schematic three-dimensional structure diagram of the present invention and another working state of the driving device.

FIG. 3 is a schematic diagram of the three-dimensional structure of the present invention.

4 is a schematic three-dimensional structure diagram of a lower die base, a lower die plate and a suction nozzle of the present invention.

FIG. 5 is a schematic diagram of the exploded structure of the clamping driver of the present invention.

6 is a schematic three-dimensional structural diagram of an upper die base, a lower die plate, a positioning guide, a gasket and an elastic piece of the present invention.

Description of reference numbers:

11, base; 12, upper die base; 121, handle; 122, upper pull groove; 13, lower die base; 131, pressing part; 132, air passage; 14, elastic connector; 141, fixed seat; 142, pull Spring; 143, accommodating cavity; 15, clamping driver; 151, guide seat; 152, guide cylinder; 153, compression spring; 154, lock piece; 155, guide hole; 16, limit piece; 161, limit slot ; 162, adjustment piece; 17, upper template; 171, driving surface; 18, lower template; 19, elastic part; 10, guide assembly; 101, guide rod; 102, guide sleeve; 103, limit cover; 2, drive device; 21, the first frame; 22, the pressing mechanism; 221, the lower pressing plate; 222, the suction hole; 23, the pulling mechanism; 231, the pulling driver; 232, the pulling part; , the second frame; 25, the lift driver; 26, the drive plate; 3, the suction nozzle; 4, the positioning guide; 41, the nut part; 42, the guide column part; 43, the thread part; 5, the gasket; 7 ,Battery.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the present invention will be further described below with reference to the embodiments and the accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.

As shown in FIG. 1 to FIG. 6 , a clamping fixture provided by the present invention includes a base 11 , an upper die base 12 arranged up and down on the base 11 , and a lower die base located between the upper die base 12 and the base 11 . 13. The elastic connector 14 connected to the upper die base 12 and the lower die base 13 , the clamping driver 15 installed on the base 11 and used to drive the lower die base 13 to approach the upper die base 12 , and the limiter installed on the base 11 16, the upper die plate 17 arranged on the side of the upper die holder 12 close to the lower die holder 13, the lower die plate 18 arranged on the side of the lower die holder 13 close to the upper die holder 17, and the upper die plate 17 and the upper die holder 12. The upper die base 12 is slidably connected to the base 11 via the guide assembly 10, the lower die base 13 is slidably connected to the guide assembly 10, the lower die base 13 is provided with a pressing portion 131, the limit The positioning member 16 is provided with a limiting slot 161, the pressing portion 131 penetrates the limiting slot 161, the lower template 18 is provided with a driving surface 171, and the two sides of the clamping fixture are respectively provided with a driving device 2 and a feeding manipulator , the driving device 2 is used to drive the upper template 17 and the lower template 18 to rise and fall synchronously or to drive the upper template 17 and the lower template 18 to approach or move away, the base 11 is driven and connected with a circulating conveying device, and the circulating conveying device is used to drive The clamping jig moves cyclically along the processing direction; in this embodiment, the battery 7 is clamped by the clamping jig as an example for description.

In actual work, the circulating conveying device drives the clamping fixture to move cyclically along the processing direction. When the clamping fixture moves to the feeding position, the driving device 2 drives the upper template 17 and the lower template 18 to move away from each other, so that the upper template 17 and the lower template 18 move away from each other. The lower die plate 18 is in the open state, the pressing part 131 moves downward in the limiting groove 161, and then the feeding manipulator places the battery 7 between the upper die plate 17 and the lower die plate 18. At this time, the elastic connector 14 is stretched, and the clamping The material driver 15 is in a compressed state, the driving device 2 releases the driving force to the clamping fixture (the driving device 2 does not apply driving force to the clamping fixture), and the upper die base 12 and the lower die base 13 are connected to the elastic connector 14. Under the action of the elastic force of the upper plate 17 and the lower plate 18 clamp the battery 7, the pressing portion 131 moves upward in the limiting groove 161 until the top wall of the limiting groove 161 abuts against the pressing portion 131, so as to prevent the pressing The moving range of the lower die holder 13 is limited, thereby ensuring the positional accuracy of the upper die holder 12, the lower die holder 13 and the lower die plate 18, and also avoiding the clamping of the upper die plate 17 and the lower die plate 18. The clamping force of the battery 7 is too large and the battery 7 is damaged. At the same time, the clamping driver 15 applies an upward force to the lower die base 13 to always apply a force close to the upper die plate 17 to the lower die plate 18 to further ensure the upper die plate. 17 and the lower template 18 hold the battery 7 for stability. The lower die base 13 is limited by the limiting member 16 to ensure that the lower die base 13 is at the same height position after each reset, thereby ensuring the Position accuracy and stability, when there are multiple clamping jigs on the circulating conveying device, all the clamping jigs are in the same height position and state during the conveying process, all the clamping jigs are consistent, and the current template 18 When the bearing surface is used as the reference surface, ensure that the reference surfaces of all clamping fixtures are in the same horizontal plane and the reference surfaces are consistent, so as to improve the processing accuracy of the battery 7 clamped by the clamping fixture by the external processing equipment, and avoid due to the reference surface. Inconsistent surfaces lead to machining errors and poor machining quality. Due to the production error in the production of the battery 7, the thickness of each battery 7 is inconsistent. By arranging the elastic member 19 between the upper die base 12 and the upper template 17, the elastic member 19 has a certain elasticity and can be compressed, not only making the upper There is an adjustment space between the mold base 12 and the upper template 17, which can automatically adapt to batteries 7 of different thicknesses. It has strong practicability, good versatility, and a wide range of use. It also makes the contact between the upper template 17 and the battery 7 flexible. 7 plays the role of buffer protection to avoid damage to the battery 7 due to excessive clamping force, and when the upper template 17 and the lower template 18 clamp the battery 7, the elastic member 19 can also provide a clamping force to the upper template 17 to further ensure The upper die plate 17 and the lower die plate 18 clamp the stability of the battery 7 . When the clamping fixture clamps the battery 7 and moves to the external processing equipment, the driving device 2 exerts a downward force on the driving surface 171 of the lower die plate 18, so that the lower die plate 18 moves downward. It is connected with the lower die base 13 via the elastic connecting piece 14 , so the upper die base 12 , the upper die plate 17 , the battery 7 , the lower die plate 18 and the elastic connecting piece 14 move downward synchronously, so that the upper die plate 17 and the lower die plate 18 clamp the battery 7 Move down to the processing position, the external processing equipment processes the clamped battery 7, the bearing surface of the lower template 18 is used as the reference plane, the driving device 2 directly drives the driving surface 171 of the lower template 18 to move down, and the driving reference plane is Working reference plane, so that the height of the lower die plate 18 is equal to the height of the battery 7. Compared with the driving device 2 that drives the upper die base 12 to move down and drives the lower die plate 18 to move down, because the upper die base 12 and the lower die plate 18 There are many assembly parts (such as: the upper template 17, the elastic member 19, etc.), so it is easy to generate cumulative errors, the lowering height of the upper mold base 12 is not necessarily equal to the lowering height of the battery 7, resulting in the lowering of the reference plane. The moving precision is low and the reference planes are inconsistent. The present invention improves the positional accuracy of the battery 7 moving downward, and the downward moving accuracy is high, which ensures that the reference planes of all the clamping jigs are consistent, thereby improving the processing efficiency of the battery 7 by the external processing equipment. Precision and quality.

Through the clever design of the clamping fixture, the present invention can automatically adapt to batteries 7 of different thicknesses and clamp them stably without clamping the batteries 7. The invention has strong practicability, good versatility, and wide application range. The reference plane makes the downward movement precision of the reference plane high, which is beneficial to improve the precision and quality of the battery 7 processing by the external processing equipment.

In this embodiment, the driving device 2 includes a first frame 21 , a push-down mechanism 22 installed on the first frame 21 , and a pull-up mechanism 23 installed on the first frame 21 . The push-down mechanism 22 is used for pressing the pressing portion 131 downward, and the upward pulling mechanism 23 is used for pulling the upper die holder 12 upward.

When the clamping jig moves to the feeding position, the pressing mechanism 22 applies a downward pressing force to the pressing portion 131, so that the pressing portion 131 together with the lower die base 13 and the lower die plate 18 move down, and at the same time the upper pulling mechanism 23 pushes the upper die The base 12 exerts an upward pulling force to prevent the upper die base 12 from moving down with the lower die base 13 under the action of the elastic connecting piece 14, so that the upper die base 12 and the lower die base 13 are in an open state, and the elastic connecting piece 14 is pulled extending, so that the upper die plate 17 and the lower die plate 18 are in an open state, so that the loading manipulator can place the battery 7 between the upper die plate 17 and the lower die plate 18; After the pulling mechanism 23 releases the upper pulling force on the upper die holder 12, the upper die holder 12 and the lower die holder 13 move close to each other under the resilient force of the elastic connecting piece 14, so that the upper die plate 17 and the lower die plate 18 clamp the battery 7. and the clamping driver 15 provides an upward force to the lower die base 13 , so that the upper die plate 17 and the lower die plate 18 can firmly clamp the battery 7 .

Specifically, a handle 121 is disposed on the top of the upper die base 12 , and the pull-up mechanism 23 includes a pull-up driver 231 installed on the first frame 21 and a pull-up member installed at the output end of the pull-up driver 231 . 232, the pull-up driver 231 is used to drive the pull-up member 232 to rise and fall, and the pull-up member 232 is drivingly connected with the handle 121; In the pull-up slot 122 , the resisting member 233 protrudes into the pull-up slot 122 , and the pull-up driver 231 is an air cylinder.

When the upper die plate 17 and the lower die plate 18 need to be opened, the pull-up driver 231 drives the upper-pulling member 232 to move up together with the resisting piece 233, and the resisting piece 233 moves upwardly against the inner wall of the upper-pulling groove 122, so that the upper die holder 12 is subjected to an upward movement. Therefore, the upper die holder 12 can be prevented from moving downwards following the lower die holder 13, thereby enabling the upper die plate 17 and the lower die plate 18 to be in an open state. The interference member 233 and the handle 121 adopt a non-fixed connection, which is convenient for disassembly and maintenance, and facilitates the mold clamping of the upper template 17 and the lower template 18 under the action of the elastic connecting member 14 to clamp the battery 7 .

In this embodiment, the lower pressing mechanism 22 is provided with a lower pressing plate 221 , the lower pressing plate 221 is provided with a suction hole 222 , the lower template 18 is embedded with a suction nozzle 3 , and the lower mold base 13 is provided with an air suction hole 222 . One end of the air passage 132 is communicated with the suction nozzle 3, and the other end of the air passage 132 is exposed on the pressing surface of the pressing part 131 and is used to communicate with the suction hole 222, and the suction hole 222 is connected with a vacuum device .

The pressing mechanism 22 drives the lower pressing plate 221 to move downward against the pressing portion 131, so that the lower template 18 and the upper template 17 are opened. The air hole 222, the air channel 132 and the suction nozzle 3 are evacuated. When the feeding robot places the battery 7 on the lower template 18, the suction nozzle 3 tightly sucks the battery 7 on the lower template 18 to improve the battery 7 on the lower template 18. Stability and positional accuracy, until the upper die plate 17 and the lower die plate 18 are closed and clamped to clamp the battery 7. During the clamping process, the battery 7 will not be displaced to ensure that the upper die plate 17 and the lower die plate 18 are closed to clamp Maintain the stability of battery 7.

In this embodiment, the driving device 2 includes a second frame 24 , a lift driver 25 installed on the second frame 24 , and a drive plate 26 installed at the output end of the lift driver 25 , the drive plate 26 is located in the drive Above the surface 171 , the driving plate 26 is used to collide with the driving surface 171 , and the lift driver 25 is used to drive the driving plate 26 to approach or move away from the driving surface 171 , and the lift driver 25 is a linear drive module or an air cylinder.

When the clamping fixture moves to the processing position, the lift driver 25 drives the drive plate 26 to move close to the drive surface 171 until the drive plate 26 moves downward against the drive surface 171, so that the upper die holder 12, the upper die plate 17, the battery 7, the lower die The template 18 and the lower mold base 13 move down synchronously, and the driving surface 171 is not only the working reference plane of the lower template 18, but also the driving reference plane. The accuracy of the position of the moving and the high accuracy of the downward movement ensures that the reference planes of all the clamping jigs are consistent, thereby improving the accuracy and quality of the battery 7 processing by the external processing equipment.

In this embodiment, the elastic connecting member 14 includes a fixed seat 141 and a tension spring 142. The tension spring 142 tightens the upper mold seat 12 and the lower mold seat 13. The fixed seat 141 is mounted on the lower mold seat 13, and the The fixing seat 141 is provided with an accommodating cavity 143 , one end of the tension spring 142 is connected with the bottom wall of the accommodating cavity 143 , the other end of the tension spring 142 is connected with the upper die base 12 , and the tension spring 142 is accommodated in the accommodating cavity 143 Inside, the tension spring 142 is shielded to hide the tension spring 142, which improves the aesthetics of the clipping jig, and plays the role of guiding and protecting the tension spring 142 to ensure that the tension spring 142 can work normally.

Specifically, the number of the tension springs 142 is two, and the two tension springs 142 are arranged side by side to provide sufficient clamping force for the lower die plate 18 and the upper die plate 17 .

Specifically, the number of the elastic connecting pieces 14 is two, one end of the upper die base 12 is connected to one end of the lower die base 13 via one elastic connecting piece 14 , and the other end of the upper die base 12 is connected via another elastic connecting piece 14 It is connected with the other end of the lower die base 13 , so that the upper die base 12 and the lower die base 13 are evenly stressed, and the stability of clamping the battery 7 is improved.

In this embodiment, the elastic member 19 is a spring, which has a simple structure, low cost, good elasticity, long service life, and convenient maintenance and disassembly. Specifically, the number of the elastic members 19 is multiple, and the multiple elastic members 19 are arranged in a rectangular array between the upper die base 12 and the upper die plate 17 , so that the upper die plate 17 is uniformly stressed and ensures the stability of clamping the battery 7 . sex.

In this embodiment, the top of the limiting member 16 is provided with an adjusting member 162 , and the bottom end of the adjusting member 162 protrudes into the limiting groove 161 . Specifically, the adjusting member 162 is an adjusting bolt, the threaded end of the adjusting bolt is threadedly connected to the top of the limiting member 16 , and the nut of the adjusting bolt protrudes into the limiting groove 161 and is used for connecting with the pressing portion 131 contact with the pressing surface. Twist the adjusting member 162 so that the adjusting member 162 can move up and down on the top of the limiting member 16 , and adjust the length of the adjusting member 162 protruding into the limiting groove 161 to adjust the position of the limiting portion 131 , thereby Adjusting the moving stroke of the pressing portion 131 in the limiting groove 161 is convenient and quick to adjust.

In this embodiment, the number of the upper template 17 is multiple, the multiple upper templates 17 are arranged opposite to the lower template 18, and the multiple upper templates 17 are arranged horizontally, so that a plurality of batteries 7 can be clamped at one time, improving the The efficiency of clamping the battery 7 is improved, and when the thickness of each battery 7 is different, since the plurality of upper templates 17 are independent of each other and do not affect each other, each upper template 17 can be automatically adapted under the action of the elastic member 19 The thickness of each corresponding battery 7 . Preferably, the number of the upper template 17 is two, so as to achieve the effect of one for two, and improve the efficiency of clamping the battery 7 .

Specifically, the number of the limiting members 16 and the number of the pressing portions 131 are both multiple, and the limiting members 16 , the pressing portions 131 and the upper template 17 are arranged in a one-to-one correspondence, so that the lower mold base 13 is evenly stressed and improves the clamping force. Maintain the stability of battery 7.

In this embodiment, the clamping driver 15 includes a guide seat 151 , a guide cylinder 152 , a compression spring 153 and a lock 154 . The bottom end of the guide seat 151 is installed on the base 11 , and the top end of the guide seat 151 is installed There is a guide hole 155 , the top end of the guide cylinder 152 is connected to the lower die base 13 , the bottom end of the guide cylinder 152 protrudes into the guide hole 155 , and one end of the compression spring 153 abuts against the bottom wall of the guide hole 155 , The other end of the compression spring 153 abuts against the inner wall of the guide cylinder 152 , the guide cylinder 152 is sleeved outside the compression spring 153 , and the locking member 154 is used to limit the guide cylinder 152 to the guide seat 151 to prevent the guide cylinder 152 from being detached from the guide. Block 151. The compression spring 153 provides an upward elastic force to the lower die holder 13 via the guide cylinder 152, so that the lower die holder 13, the lower die plate 18, the battery 7, the upper die plate 17, and the upper die holder 12 can be automatically reset synchronously, and also the lower die holder 13 can be automatically reset. 13 provides a holding force. The compression spring 153 is accommodated between the guide seat 151 and the guide cylinder 152, which not only protects the compression spring 153, but also guides the compression spring 153 to prevent the compression spring 153 from being bent and deformed and unable to work normally. The guide hole 155 guides the guide cylinder 152 to improve the stability of the lower die base 13 rising and falling.

In order to further improve the lifting and lowering stability of the lower die holder 13 , the lower die holder 13 is also slidably connected to the base 11 via the guide assembly 10 .

In this embodiment, the upper die base 12 is connected to the upper die plate 17 via a positioning guide member 4, and the positioning guide member 4 includes a nut portion 41, a guide post portion 42 and a threaded portion 43 that are connected in sequence. 43 is threadedly connected with the upper die plate 17 , the guide column portion 42 is slidably connected with the upper die base 12 , and the nut portion 41 is used to abut the top surface of the upper die base 12 to limit the upper die plate 17 . The positioning guide 4 of this structural design not only realizes the connection between the upper die base 12 and the upper die plate 17 , but also enables the upper die plate 17 to move relative to the upper die base 12 , so that the upper die plate 17 can automatically adapt to the battery under the action of the elastic member 19 . 7 thickness to achieve automatic adjustment.

Specifically, a gasket 5 is provided between the nut portion 41 and the top surface of the upper die base 12 , the upper die base 12 is embedded with a sliding sleeve slidably connected to the guide column portion 42 , and the sliding sleeve is sleeved Outside the guide column portion 42 , the guide column portion 42 is slidably connected with the sliding sleeve, so that the frictional resistance is small, and the stability of the movement of the upper die plate 17 relative to the upper die base 12 is improved.

Specifically, the guide assembly 10 includes a guide rod 101, a guide sleeve 102 and a limit cover 103. The top end of the guide rod 101 is installed on the upper die base 12, the guide sleeve 102 is installed on the base 11, and the The guide rod 101 is slidably connected with the guide sleeve 102 , the limit cover 103 is installed on the bottom end of the guide rod 101 , and the limit cover 103 is located below the base 11 ; specifically, the number of the guide assemblies 10 is four One, four guide assemblies 10 are arranged in a rectangular array. The sliding connection between the guide rod 101 and the guide sleeve 102 improves the stability of the lifting of the upper die base 12, and the limit cover 103 is used to abut against the bottom surface of the base 11 to limit the maximum upward movement of the upper die base 12. The upper mold base 12 is prevented from being separated from the base 11 , and the stability of clamping the battery 7 between the upper mold plate 17 and the lower mold plate 18 is ensured.

All the technical features in this embodiment can be freely combined according to actual needs.

The above-mentioned embodiment is a preferred implementation scheme of the present invention. In addition, the present invention can also be implemented in other ways, and any obvious replacements are within the protection scope of the present invention without departing from the concept of the technical solution.

Claims (10)

1. The utility model provides a press from both sides material tool which characterized in that: the automatic feeding device comprises a base, a lifting and lowering device, a lower die holder, an elastic connecting piece, a material clamping driver, a limiting piece, an upper die plate, a lower die plate and an elastic piece, wherein the lifting and lowering device is arranged on an upper die holder of the base, the lower die holder is positioned between the upper die holder and the base, the elastic connecting piece is connected with the upper die holder and the lower die holder, the material clamping driver is arranged on the base and used for driving the lower die holder to be close to the upper die holder, the limiting piece is arranged on the base, the upper die plate is arranged on one side, close to the lower die holder, of the upper die holder, the lower die plate is arranged on the lower die holder, the elastic piece is arranged between the.

2. A material clamping jig according to claim 1, characterized in that: the elastic connecting piece comprises a fixing seat and a tension spring, the fixing seat is arranged on the lower die base and provided with a containing cavity, one end of the tension spring is connected with the bottom wall of the containing cavity, and the other end of the tension spring is connected with the upper die base.

3. A material clamping jig according to claim 1, characterized in that: the lower template is embedded with a suction nozzle.

4. A material clamping jig according to claim 3, characterized in that: the lower die base is provided with an air passage, one end of the air passage is communicated with the suction nozzle, and the other end of the air passage is exposed on the pressing surface of the pressing part.

5. A material clamping jig according to claim 1, characterized in that: the guide assembly comprises a guide rod, a guide sleeve and a limiting cover, the top end of the guide rod is arranged on the upper die base, the guide sleeve is arranged on the base, the guide rod is connected with the guide sleeve in a sliding mode, the limiting cover is arranged at the bottom end of the guide rod, and the limiting cover is located below the base.

6. A material clamping jig according to claim 1, characterized in that: the top of locating part is provided with the regulating part, the bottom of regulating part stretches out to the spacing inslot.

7. A material clamping jig according to claim 1, characterized in that: the top of the upper die base is provided with a handle.

8. A material clamping jig according to claim 1, characterized in that: the number of the upper templates is multiple, and the upper templates are all arranged opposite to the lower template.

9. A material clamping jig according to claim 1, characterized in that: press from both sides material driver includes guide holder, guide cylinder, pressure spring and latch fitting, the bottom of guide holder is installed in the base, the top of guide holder is provided with the guiding hole, the top and the die holder of guide cylinder are connected, the bottom projection of guide cylinder is to the guiding hole in, the diapire of guiding hole is contradicted to the one end of pressure spring, and the inner wall of guide cylinder is contradicted to the other end of pressure spring, the latch fitting is used for spacing on the guide holder with the guide cylinder.

10. A material clamping jig according to claim 1, characterized in that: the upper die base is connected with the upper die plate via the positioning guide piece, the positioning guide piece comprises a screw cap part, a guide column part and a screw thread part which are connected in sequence, the screw thread part is connected with the upper die plate in a threaded manner, the guide column part is connected with the upper die base in a sliding manner, and the screw cap part is used for abutting against the top surface of the upper die base.

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