Processing fixture

Abstract

The application provides a processing jig, including a conveying assembly, a moving carrier plate and a driving device, the moving carrier plate is configured to carry a steel strip, the processing jig includes a length direction and a width direction, the driving device is configured to drive the moving carrier plate to move along the length direction; a cutting assembly, including an upper cutter and a lower cutter, the upper cutter moves towards the lower cutter to cut the steel strip; a punching assembly, along the length direction of the processing jig, the projection of the cutting assembly and the punching assembly at least partially overlaps, after the steel strip is cut, the conveying assembly moves the steel strip to the punching assembly, the punching assembly includes a punching plate, a protection plate and a punching plate which are sequentially arranged from top to bottom, the punching plate drives the protection plate to move towards the punching plate to punch the steel strip; a supporting assembly, including a bottom plate, a vertical plate and a back plate, the vertical plate is perpendicular to the bottom plate and extends upward, the back plate is fixedly connected with the end of the vertical plate away from the bottom plate, the lower cutter and the punching plate are located on the bottom plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mechanical equipment, in particular to a machining jig for machining steel strips. BACKGROUND

[0002] In daily production, when punching machining is needed for a steel strip, the steel strip needs to be cut by a cutting knife first, and then the steel strip is punched by tools or transported to a specific machine. The position of the steel strip needs to be re-calibrated during punching, which is time-consuming and laborious, and the production efficiency is very low.

[0003] Therefore, it is necessary to provide a machining jig to solve the above problems. SUMMARY

[0004] The present application aims to provide a machining jig for quickly cutting and punching a steel strip.

[0005] To achieve the above-mentioned purpose, the present application provides a machining jig for punching and cutting a steel strip, comprising a conveying assembly, a moving carrier plate and a driving device, the moving carrier plate is configured to carry the steel strip, the machining jig comprises a length direction and a width direction, the driving device is configured to drive the moving carrier plate to move along the length direction; a cutting assembly comprising an upper cutter and a lower cutter, the upper cutter moves towards the lower cutter to cut the steel strip; a punching assembly, the projection of the cutting assembly and the punching assembly at least partially overlaps along the length direction of the machining jig, after the steel strip is cut, the conveying assembly moves the steel strip to the punching assembly, the punching assembly comprises a punching plate, a protection plate and a punching plate arranged from top to bottom, the punching plate drives the protection plate to move towards the punching plate to punch the steel strip; a supporting assembly comprising a bottom plate, a vertical plate and a back plate, the vertical plate is perpendicular to the bottom plate and extends upward, the back plate is fixedly connected with the end of the vertical plate away from the bottom plate, and the lower cutter and the punching plate are located on the bottom plate.

[0006] As a further improvement of the present application, the conveying assembly further comprises a pressing device, the pressing device comprises a pressing plate, a pressing plate support and a pressing motor, the pressing plate is located on the side of the moving carrier plate away from the bottom plate, the pressing motor is located on the side of the pressing plate away from the moving carrier plate, the pressing motor can drive the pressing plate to move up and down, the pressing plate support is erected on the moving carrier plate, the pressing device further comprises a punching plate guide column, the punching plate guide column is perpendicular to the pressing plate, one end of the punching plate guide column is fixedly connected with the pressing plate, and the other end passes through the pressing plate support and can slide relative to the pressing plate support.

[0007] As a further improvement of the present application, the conveying assembly further comprises a first guide rail arranged along the length direction, the moving carrier plate is in sliding connection with the first guide rail, and a first screw rod is arranged in parallel with the first guide rail, a nut is sleeved on the first screw rod, the nut is fixedly connected with the moving carrier plate, and the nut can drive the moving carrier plate to slide relative to the first screw rod.

[0008] As a further improvement of the present application, one end of the first screw rod is provided with a synchronous device along the length direction, the synchronous device comprises a first synchronous wheel and a second synchronous wheel, the first synchronous wheel is sleeved on one end of the first screw rod, and the second synchronous wheel is connected with the first synchronous wheel through a synchronous belt.

[0009] As a further improvement of the present application, the conveying assembly further comprises a scale device, the machining jig further comprises a protective plate, the protective plate is fixedly connected with the back plate, the scale device comprises a pointer plate and a scale ruler, the scale ruler is fixedly connected with the pressing plate support, the pointer plate is fixedly connected with the protective plate, and the position of the pointer plate relative to the punching plate is always kept unchanged.

[0010] As a further improvement of the present application, in the direction perpendicular to the bottom plate, the projection of the upper cutter on the bottom plate does not coincide with the projection of the lower cutter on the bottom plate, and one side of the upper cutter facing the lower cutter is a bevel.

[0011] As a further improvement of the present application, the cutting assembly comprises a cutting cylinder, the cutting cylinder is fixedly connected with the back plate, the cutting cylinder is fixedly connected with the upper cutter through a cutter connecting plate, and the cutting cylinder controls the movement of the upper cutter towards the lower cutter.

[0012] As a further improvement of the present application, the supporting assembly comprises three vertical plates, the three vertical plates are arranged in sequence and at equal intervals along the length direction of the machining jig, the punching plate is fixedly connected with the bottom plate, the punching plate is in sliding connection with two vertical plates close to the synchronous device, and the punching plate can slide along the vertical plate.

[0013] As a further improvement of the present application, a hole is arranged on the punching plate, a main guide column protruding towards the punching plate is arranged in the punching plate, the main guide column corresponds to the hole, when the punching plate moves downward, the main guide column is inserted into the hole after passing through the steel belt, and the projection of the pointer plate coincides with the projection of the main guide column along the width direction of the machining jig.

[0014] As a further improvement of the present application, the punching assembly further comprises an elbow pressing connecting plate, a bearing pressing block and a punching cylinder, the punching cylinder is fixedly connected with the back plate, the bearing pressing block is located on both sides of the elbow pressing connecting plate, the upper end of the elbow pressing connecting plate is connected with the punching cylinder, the lower end of the elbow pressing connecting plate is connected with the protection plate, the main guide column passes through the elbow pressing connecting plate, the upper end of the main guide column is connected with the punching cylinder, and the punching cylinder drives the main guide column to move towards the steel belt, so that the main guide column performs the punching operation on the steel belt.

[0015] In summary, the processing jig in the present application integrates the punching assembly and the cutting assembly, the steel belt is conveyed to the punching assembly by the conveying assembly after being cut, the cutting and punching operations on the steel belt can be completed on the processing jig at one time, the intermediate transfer time is reduced, and the beat efficiency is improved. Meanwhile, the stamping plate uniformly applies force through the protection plate, the protection plate can absorb impact force during punching, prevents surface indentation of the steel belt, prolongs the service life of the punch, and makes the edges of the hole position free of burrs, the lower cutting knife and the punching plate are fixed on the bottom plate, avoiding suspended parts and reducing safety hazards caused by looseness. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above technical content of the present application and the following detailed embodiments can be better understood when read in conjunction with the accompanying drawings. It should be noted that the drawings are only examples of the claimed technical solutions. In the drawings, the same reference numerals represent the same or similar elements.

[0017] Figure 1 is a perspective view of a processing jig according to an embodiment of the present application.

[0018] Figure 2 is Figure 1 is an enlarged view of the circled part.

[0019] Figure 3 is Figure 1 is another perspective view of the processing jig shown in FIG. 1 from another angle.

[0020] Figure 4 is Figure 3 is an enlarged view of the circled part.

[0021] Figure 5 is Figure 2 is a perspective view of the processing jig shown in FIG. 1 without the back plate.

[0022] Figure 6 is Figure 1 is a perspective view of the processing jig shown in FIG. 1 from the right side.

[0023] In the drawings, the reference numerals are explained as follows:

[0024] 100 - processing fixture, 110 - conveying assembly, 111 - moving carrier plate, 113 - pressing device, 1131 - pressing plate, 1132 - pressing motor, 1133 - pressing plate support, 1134 - punching plate guide post, 114 - first guide rail, 115 - first screw rod, 116 - nut, 117 - synchronization device, 1171 - first synchronization wheel, 1172 - second synchronization wheel, 1173 - synchronization belt, 118 - scale device, 1181 - pointer plate, 1182 - scale, 119 - slider, 120 - cutting assembly, 121 - upper cutter, 122 - lower cutter, 123 - cutting cylinder, 124 - cutter connecting plate, 130 - punching assembly, 131 - punching plate, 132 - protection plate, 133 - punching plate, 1331 - hole, 134 - elbow connecting plate, 135 - bearing pressing block, 136 - main guide post, 137 - auxiliary guide post, 138 - punching cylinder, 140 - supporting assembly, 141 - bottom plate, 142 - vertical plate, 143 - back plate, 150 - protection plate, 160 - control assembly, 161 - pressing control device, 162 - cutting control device, 163 - punching control device. DETAILED DESCRIPTION

[0025] The specific features and advantages of the present application are described in the detailed description of the application below, which, taken in conjunction with the accompanying drawings and the claims, is sufficient to allow those skilled in the art to understand the technical content of the present application and implement it, and those skilled in the art can easily understand the related purposes and advantages of the present application according to the specification, claims and drawings.

[0026] The terms and expressions used herein are only used for description, and the present application should not be limited to these terms and expressions. The use of these terms and expressions does not mean that the equivalents of any of the features described (or part thereof) are excluded, and it should be recognized that various modifications that can exist should also be included in the scope of the claims. Other modifications, changes and substitutions can also exist. Accordingly, the claims should be considered to cover all these equivalents.

[0027] Please refer to Figures 1-6 As shown in the drawings, the present application provides a processing fixture 100, which includes a conveying assembly 110, a cutting assembly 120, a punching assembly 130 and a supporting assembly 140.

[0028] The conveying assembly 110 comprises a moving carrier plate 111 and a driving device (not shown), the moving carrier plate 111 is configured to carry the steel strip to be processed, the processing jig 100 comprises a length direction and a width direction, the driving device is configured to drive the moving carrier plate 111 to move along the length direction to transport the steel strip to move on the processing jig 100; the cutting assembly 120 comprises an upper cutter 121 and a lower cutter 122, the upper cutter 121 moves towards the lower cutter 122 to quickly cut the steel strip, so that the cross section of the steel strip is neat; the punching assembly 130, along the length direction of the processing jig 100, the projection of the cutting assembly 120 and the punching assembly 130 at least partially overlaps, after the steel strip is cut, the conveying assembly 110 moves the steel strip to the punching assembly 130, the punching assembly 130 comprises a stamping plate 131, a protection plate 132 and a punching plate 133 arranged in sequence from top to bottom, the stamping plate 131 drives the protection plate 132 to move towards the punching plate 133 to punch the steel strip. The support assembly 140 comprises a bottom plate 141, a vertical plate and a back plate 143, the vertical plate is perpendicular to the bottom plate 141 and extends upward, the back plate 143 is fixedly connected with one end of the vertical plate away from the bottom plate 141, and the lower cutter 122 and the punching plate 133 are located on the bottom plate 141.

[0029] Through the cooperation of the cutting assembly 120, the conveying assembly 110 and the punching assembly 130, after the steel strip is cut, it does not need to move transversely, but is directly sent to the punching assembly 130 along the length direction of the processing jig 100 by the conveying assembly 110, so that the cutting and punching operations on the steel strip can be completed on the processing jig 100 at one time, the intermediate transfer time is reduced, and the efficiency is improved. At the same time, the stamping plate 131 uniformly applies force through the protection plate 132, the protection plate 132 can absorb impact force during punching, prevent surface indentation of the steel strip, prolong the service life of the punch, and make the edges of the hole position free of burrs, and the lower cutter 122 and the punching plate 133 are fixed on the bottom plate 141, avoiding suspended parts and reducing safety hazards caused by looseness.

[0030] Further, in the embodiment, the conveying assembly 110 further comprises a first guide rail 114 arranged along the length direction, the moving carrier plate 111 is slidingly connected with the first guide rail 114, and a first lead screw 115 is arranged in parallel with the first guide rail 114, a nut 116 is sleeved on the first lead screw 115, the nut 116 is fixedly connected with the moving carrier plate 111, and the nut 116 can drive the moving carrier plate 111 to slide relative to the first lead screw 115. By driving the first lead screw 115 to rotate, the nut 116 is caused to slide along the first lead screw 115, and the nut 116 drives the moving carrier plate 111 to slide along the first guide rail 114, that is, the moving carrier plate 111 slides along the length direction of the machining jig 100, and through cooperation of the first lead screw 115, the nut 116, the sliding block 119 and the first guide rail 114, the moving carrier plate 111 can smoothly slide along the length direction of the machining jig 100, and the shaking amplitude is smaller during sliding.

[0031] Further, in the embodiment, along the length direction, one end of the first lead screw 115 is provided with a synchronous device 117, the synchronous device 117 comprises a first synchronous wheel 1171 and a second synchronous wheel 1172, the first synchronous wheel 1171 is sleeved on one end of the first lead screw 115, and the second synchronous wheel 1172 is connected with the first synchronous wheel 1171 through a synchronous belt 1173. By using the synchronous device 117, when an external driving device is connected, the second synchronous wheel 1172 can be used to drive the first synchronous wheel 1171 to rotate, and then the first lead screw 115 is driven to rotate, the nut 116 is driven to move, and the moving carrier plate 111 is driven to move. In addition, the external driving device can be arranged on the outside or the bottom of the machining jig 100, the axial space of the end of the first lead screw 115 is saved, and interference with the cutting / punching station is avoided.

[0032] Further, the conveying assembly 110 further comprises a pressing device 113, the pressing device 113 comprises a pressing plate 1131, a pressing plate support 1133 and a pressing motor 1132, the pressing plate 1131 is located on the side of the moving carrier plate 111 away from the bottom plate 141, the pressing motor 1132 is located on the side of the pressing plate 1131 away from the moving carrier plate 111, the pressing plate support 1133 is arranged on the moving carrier plate 111, the pressing device 113 further comprises a stamping plate guide column 1134, the stamping plate guide column 1134 is perpendicular to the pressing plate 1131, one end of the stamping plate guide column 1134 is fixedly connected with the pressing plate 1131, and the other end penetrates through the pressing plate support 1133 and can slide relative to the pressing plate support 1133, and the pressing motor 1132 can drive the pressing plate 1131 to perform lifting movement. Through the stamping plate guide column 1134 arranged in this way, the pressing plate 1131 will not deviate in the horizontal direction when performing lifting movement in the vertical direction, and the stability of the pressing device 113 during operation is improved.

[0033] Further, in the embodiment, the conveying assembly 110 further comprises a scale device 118, the scale device 118 comprising a pointer plate 1181 and a scale 1182, and the machining jig 100 further comprises a protective plate 150, the protective plate 150 being fixedly connected with the back plate 143 and covering part of the components of the machining jig 100. The scale 1182 is fixedly connected with the pressing plate support 1133, and the pointer plate 1181 is fixedly connected with the protective plate 150, so that the position of the pointer plate 1181 relative to the punching plate 133 is always kept unchanged, and the operator only needs to align the target scale line on the scale 1182 with the pointer plate 1181 to position the punching position of the steel strip with zero error, without the need of repeated trial punching or the aid of additional measuring tools. When multiple positions on the steel plate need to be punched, it is more efficient.

[0034] Further, in the direction perpendicular to the bottom plate 141, the projection of the upper cutter 121 on the bottom plate 141 does not coincide with the projection of the lower cutter 122 on the bottom plate 141, and the side of the upper cutter facing the lower cutter is a bevel, that is, the lateral staggered cutters form a scissors type shearing, the upper cutter 121 cuts into the steel strip at an angle, the shearing force is gradually released, and the collapse angle and burr of the cross section of the steel strip are significantly reduced, which is particularly effective for thin steel strips below 0.3 mm. At the same time, the full length of the cutting edge of the upper cutter 121 does not contact the steel strip at the same time, and the unit length cutting load is reduced. The service life of the blade of the same material can be prolonged by 1.5-2 times, and the probability of downtime for blade replacement is reduced.

[0035] Further, in the embodiment, the cutting assembly 120 comprises a cutting cylinder 123, the cutting cylinder 123 being fixedly connected with the back plate 143, the cutting cylinder 123 being fixedly connected with the upper cutter through a cutter connecting plate 124, and the cutting cylinder 123 controlling the movement of the upper cutter towards the lower cutter. Through the cutting cylinder 123, the rate and distance of the downward movement of the upper cutter can be accurately controlled, and the process control of the cutting is more accurate.

[0036] Further, the supporting assembly 140 comprises three vertical plates 142, which are arranged in sequence and at equal intervals along the length direction of the machining jig 100, the punching plate 133 being fixedly connected with the bottom plate 141, and the stamping plate 131 being slidingly connected with the two vertical plates 142 close to the synchronous device 117. The stamping plate 131 can slide along the vertical plates 142, and the stamping plate 131 can slide downward along the vertical plates 142, so that the stamping plate 131 can keep stable in the horizontal direction during the punching process of the steel plate and will not shake.

[0037] Further, in the embodiment, the punching plate 133 is provided with a hole 1331, the stamping plate 131 is provided with a main guide column 136 protruding towards the punching plate 133, the main guide column 136 corresponds to the hole 1331, when the stamping plate 131 moves downward, the main guide column 136 is inserted into the hole 1331 after passing through the steel strip, in the width direction of the machining jig 100, the projection of the pointer plate 1181 coincides with the projection of the main guide column 136. The steel strip is completely constrained in the width direction of the machining jig 100, the hole 1331 is coaxial with the center of the main guide column 136; the projection of the pointer plate 1181 coincides with the projection of the main guide column 136, the zero position of the scale 1182 can be directly aligned with the center line of the main guide column 136, without the need for additional side edge stop gauge. When replacing the steel strip of different widths, only the punching plate 133 needs to be replaced as a whole (the position of the hole 1331 moves accordingly), the main guide column 136 and the hole 1331 always match; the pointer plate 1181 is fixed directly above the main guide column 136, the zero position automatically follows, without the need for recalibration of the scale 1182.

[0038] Further, in the embodiment, the punching assembly 130 further comprises a punching cylinder 138, the punching cylinder 138 is fixedly connected with the back plate 143, the punching assembly 130 further comprises an elbow connecting plate 134 and a bearing pressing block 135, the bearing pressing block 135 is located on both sides of the elbow connecting plate 134, the upper end of the elbow connecting plate 134 is connected with the punching cylinder 138, and the lower end is connected with the protection plate 132. The main guide column 136 passes through the elbow connecting plate 134, the upper end of the main guide column 136 is connected with the punching cylinder 138, the punching cylinder 138 drives the main guide column 136 to move towards the steel strip, so that the main guide column 136 performs punching work on the steel strip. The linear thrust of the punching cylinder 138 is "rigid and without gap" transmitted to the protection plate 132 below, at the same time, the elbow connecting plate 134 itself serves as a guide seat, the main guide column 136 passes through the guide seat, and the main guide column 136 and the hole 1331 are always coaxial. The main guide column 136 cooperates with the hole 1331 to form a "double-sided sliding bearing", which not only bears the transverse reaction force, but also absorbs the lateral bending moment during punching, preventing unilateral wear of the main guide column.

[0039] Further, the punching assembly 130 further comprises a secondary guide column 137, one end of the secondary guide column 137 is fixedly connected with the protection plate 132, the secondary guide column 137 passes through the stamping plate 131 and the bearing pressing block 135, each bearing pressing block 135 passes through two secondary guide columns 137, through the secondary guide column 137, the stamping plate 131 will not deviate in the horizontal direction when moving in the vertical direction.

[0040] Further, the protection plate 150 covers the cutting cylinder 123 and the punching cylinder 138 to protect the parts. The processing jig 100 further comprises a control assembly 160, which comprises a pressing control device 161, a cutting control device 162 and a punching control device 163. The pressing control device 161 is electrically connected with the pressing motor 1132, the cutting control device 162 is electrically connected with the cutting cylinder 123, and the punching control device 163 is electrically connected with the punching cylinder 138. The corresponding cylinder or motor is controlled through the respective control device.

[0041] In summary, in the present application, the punching assembly 130 and the cutting assembly 120 are integrated in the processing jig 100. The steel strip is transported to the punching assembly 130 by the conveying assembly 110 after being cut. The cutting and punching operations on the steel strip can be completed on the processing jig 100 at one time, reducing the intermediate transfer time and improving the efficiency. At the same time, the stamping plate 131 uniformly applies force through the protection plate 132. The protection plate 132 can absorb the impact force during punching, prevent surface indentation of the steel strip, prolong the service life of the punch, and make the edges of the hole position free of burrs. The lower cutter 122 and the punching plate 133 are fixed on the bottom plate 141, avoiding suspended parts and reducing safety hazards caused by looseness.

[0042] Similarly, it should be noted that although the present application has been described with reference to the current specific embodiments, those skilled in the art should recognize that the above embodiments are only used to illustrate the present application, and various equivalent changes or replacements can be made without departing from the spirit of the present application. Therefore, any changes or modifications to the above embodiments within the scope of the spirit of the present application will fall within the scope of the claims of the present application.

Claims

1. A processing jig for punching and cutting a steel strip, characterized by, The application relates to a steel strip cutting and punching device. The device comprises a conveying assembly, a cutting assembly, a punching assembly and a supporting assembly. The conveying assembly comprises a moving carrier plate and a driving device, the moving carrier plate is configured to carry the steel strip, the processing jig comprises a length direction and a width direction, and the driving device is configured to drive the moving carrier plate to move along the length direction. The cutting assembly comprises an upper cutter and a lower cutter, the upper cutter moves towards the lower cutter to cut the steel strip. The punching assembly is partially overlapped with the cutting assembly in the length direction of the processing jig, the conveying assembly moves the steel strip to the punching assembly after the steel strip is cut, the punching assembly comprises a punching plate, a protection plate and a punching plate arranged from top to bottom, the punching plate drives the protection plate to move towards the punching plate to punch the steel strip. The supporting assembly comprises a bottom plate, a vertical plate and a back plate, the vertical plate is perpendicular to the bottom plate and extends upwards, the back plate is fixedly connected to the end of the vertical plate away from the bottom plate, and the lower cutter and the punching plate are located on the bottom plate.

2. The processing fixture of claim 1, wherein The conveying assembly further comprises a pressing device, the pressing device comprises a pressing plate, a pressing plate support and a pressing motor, the pressing plate is located on the side of the moving carrier plate away from the bottom plate, the pressing motor is located on the side of the pressing plate away from the moving carrier plate, the pressing motor can drive the pressing plate to move up and down, the pressing plate support is arranged on the moving carrier plate, the pressing device further comprises a punching plate guide column, the punching plate guide column is perpendicular to the pressing plate, one end of the punching plate guide column is fixedly connected to the pressing plate, and the other end of the punching plate guide column penetrates through the pressing plate support and can slide relative to the pressing plate support.

3. The processing fixture of claim 2, wherein The conveying assembly further comprises a first guide rail arranged along the length direction, the moving carrier plate is slidably connected to the first guide rail, and a first lead screw is arranged in parallel with the first guide rail, a nut is arranged on the first lead screw, the nut is fixedly connected to the moving carrier plate, and the nut can drive the moving carrier plate to slide relative to the first lead screw.

4. The processing fixture of claim 3, wherein One end of the first lead screw is provided with a synchronous device along the length direction, the synchronous device comprises a first synchronous wheel and a second synchronous wheel, the first synchronous wheel is arranged on one end of the first lead screw, and the second synchronous wheel is connected to the first synchronous wheel through a synchronous belt.

5. The processing fixture of claim 1, wherein The conveying assembly further comprises a scale device, the processing jig further comprises a protection plate, the protection plate is fixedly connected to the back plate, the scale device comprises a pointer plate and a scale, the scale is fixedly connected to the pressing plate support, the pointer plate is fixedly connected to the protection plate, and the position of the pointer plate relative to the punching plate is always kept unchanged.

6. The processing fixture of claim 1, wherein In the direction perpendicular to the bottom plate, the projection of the upper cutter on the bottom plate is not overlapped with the projection of the lower cutter on the bottom plate, and one side of the upper cutter facing the lower cutter is an inclined surface. The cutting assembly comprises a cutting cylinder, the cutting cylinder is fixedly connected to the back plate, the cutting cylinder is fixedly connected to the upper cutter through a cutter connecting plate, and the cutting cylinder controls the upper cutter to move towards the lower cutter.

7. The processing fixture of claim 4, wherein The support assembly comprises three vertical plates arranged equidistantly along the length direction of the machining jig, the punching plate is fixedly connected with the bottom plate, the stamping plate is slidably connected with two vertical plates close to the synchronization device, and the stamping plate can slide along the vertical plate.

8. The processing fixture of claim 7, wherein, The punching plate is provided with a hole, the stamping plate is provided with a main guide column protruding towards the punching plate, the main guide column corresponds to the hole, when the stamping plate moves downward, the main guide column is inserted into the hole after passing through the steel strip, and the projection of the pointer plate coincides with the projection of the main guide column along the width direction of the machining jig.

9. The processing fixture of claim 8, wherein, The punching assembly further comprises an elbow pressing connecting plate, a bearing pressing block and a punching cylinder, the punching cylinder is fixedly connected with the back plate, the bearing pressing block is located on both sides of the elbow pressing connecting plate, the upper end of the elbow pressing connecting plate is connected with the punching cylinder, the lower end of the elbow pressing connecting plate is connected with the protection plate, the main guide column passes through the elbow pressing connecting plate, the upper end of the main guide column is connected with the punching cylinder, and the punching cylinder drives the main guide column to move towards the steel strip, so that the main guide column performs the punching operation on the steel strip.

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