Metal strip edge trimming equipment and production process thereof

Abstract

The present invention provides a metal strip edge trimming device and a production process thereof. The metal strip edge trimming device comprises: a straightening seat, a rolling table and two edge trimming components sequentially arranged along the transmission direction of the metal strip. The edge trimming component comprises a base, a main shaft and two cutting bases located on the main shaft, the two cutting bases are arranged opposite to each other, and each cutting base comprises a threaded sleeve, a slide and a cutter. The metal strip is shaped before edge trimming to improve the cutting accuracy; the distance between the two cutters can be adjusted by rotating the threaded sleeve, and the edge trimming operation can be performed on metal strips of different sizes; the edge trimming component is arranged on the conveying path of the metal strip, and the cutting is performed by using the power of the metal strip moving forward, and no additional driving device is required, which saves the equipment manufacturing cost and improves the edge trimming efficiency; two sets of edge trimming components are arranged to perform secondary cutting on the metal strip to improve the edge trimming accuracy.

Description

Technical Field

[0001] The invention relates to the field of machining, and in particular to a metal strip edge trimming device and a production process thereof. Background Art

[0002] The raw materials of alloy resistors are as follows Figure 1 The metal strip 20 shown needs to be trimmed along the cutting track 22 before further processing, and the edge material 21 needs to be removed to adjust the width of the metal strip 20, so that the size of the metal strip 20 meets the processing standard before subsequent processing. Otherwise, the resistor obtained by processing will be inconsistent in resistance value due to size difference and produce defects. In the existing process, the metal strip 20 is punched out by a stamping machine, and the excess edge material on the metal strip 20 is cut off by stamping, and polished to remove burrs after stamping.

[0003] However, the existing edge trimming method requires targeted design of stamping dies. When producing resistors of different sizes, the corresponding stamping dies need to be replaced for edge trimming operations. While increasing the equipment manufacturing cost, replacing the die affects the edge trimming efficiency, and the storage of the die also requires space. On the other hand, cutting the edge material by stamping will cause the metal strip to shake, and the flatness of the edge of the metal strip after cutting is low.

[0004] Based on the above problems, it is necessary to optimize the existing edge trimming process. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a metal strip edge trimming device and a production process thereof, which does not require replacement of the mold when cutting metal strips of different sizes and improves the edge trimming accuracy of the metal strip.

[0006] The objective of the present invention is achieved through the following technical solutions:

[0007] A metal strip edge trimming device, comprising: a straightening seat, a rolling table and two edge trimming components arranged in sequence along the metal strip transmission direction;

[0008] The straightening seat cooperates with the rolling table to shape the metal strip;

[0009] The two edge cutting assemblies are arranged at intervals, and the edge cutting assemblies are used for cutting the metal strip;

[0010] The chamfering assembly includes a base, a main shaft and two cutting bases located on the main shaft. The two cutting bases are arranged opposite to each other. Each cutting base includes a threaded sleeve, a slide and a cutter. The threaded sleeve is rotatably arranged on the main shaft. The threaded sleeve is threadedly connected to the slide. Rotating the threaded sleeve is used to adjust the distance between the two cutters.

[0011] In one of the embodiments, a polisher is further included, wherein the polisher is used to grind the metal strip after passing through the chamfering assembly.

[0012] In one embodiment, a guide assembly is provided between the straightening seat and the rolling table, the guide assembly includes a guide rail and two anti-deviation wheels located on the guide rail, the anti-deviation wheel includes a nut, a screw and a bearing, the nut is slidably arranged in the guide rail, and the screw passes through the bearing and is threadedly connected to the nut.

[0013] In one embodiment, the rolling platform includes a fixed seat, a first roller, a second roller, a first pad, a second pad and a scraper, the fixed seat is provided with two mounting parts, the first pad and the second pad are respectively arranged in the two mounting parts, the first roller is located above the first pad, the first pad is provided with a convex strip, the second roller is located above the second pad, and the scraper is arranged in the second pad; wherein, the first roller and the second roller are both provided with a plurality of rolling edges.

[0014] In one of the embodiments, a blanking portion is provided between the two mounting portions.

[0015] In one of the embodiments, a positioning groove is formed in the middle of the second cushion block, the scraper is embedded in the positioning groove, and a wedge-shaped insert is provided between the bottom of the positioning groove and the scraper.

[0016] In one embodiment, a shaping component is provided between the two edge chamfering components, and the shaping component includes a limit block, a pressure plate and a spring. The spring provides elastic force to drive the pressure plate and the limit block to abut against each other, and the limit block contacts the edge of the metal strip to scrape off burrs.

[0017] In one of the embodiments, a hydraulic cylinder and a shaping press head are provided on the straightening seat, and the hydraulic cylinder is used to drive the shaping press head to press the metal strip.

[0018] In one of the embodiments, a knob is provided on the threaded sleeve.

[0019] A metal strip edge trimming production process, based on the above-mentioned metal strip edge trimming equipment, comprises the following steps:

[0020] The metal strip is passed through the metal strip edge trimming device, the end of the metal strip is fixed on the winding mechanism, and the winding mechanism winds up the metal strip;

[0021] When the metal belt moves, it first enters the straightening seat, which flattens the metal belt;

[0022] The rolling table rolls on the outer wall of the metal strip to form outer cutting marks and inner cutting marks;

[0023] When the metal strip enters the first edge cutting assembly, the upper cutter cuts the metal strip along the outer cutting mark;

[0024] When the metal strip enters the second edge trimming assembly, the cutter thereon cuts the metal strip along the inner cutting mark to obtain a metal strip of target size.

[0025] The above-mentioned metal strip edge trimming equipment has the following advantages:

[0026] 1. Shape the metal strip before edge trimming to improve cutting accuracy;

[0027] 2. The distance between the two cutters can be adjusted by rotating the threaded sleeve, and the edge cutting operation can be performed on metal strips of different sizes;

[0028] 3. The edge trimming component is arranged on the conveying path of the metal belt, and the cutting is carried out by utilizing the power of the metal belt moving forward, without the need for additional driving equipment, thus saving the equipment manufacturing cost and improving the edge trimming efficiency;

[0029] 4. Set up two sets of edge trimming components to cut the metal strip twice to improve the edge trimming accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is a schematic diagram of the structure of the metal strip raw material;

[0032] Figure 2 It is a structural schematic diagram of a metal strip edge trimming device;

[0033] Figure 3 Schematic diagram of the distribution of two edge cutting components;

[0034] Figure 4 is a schematic diagram of the structure of the edge cutting component;

[0035] Figure 5 A schematic diagram of a cutter cutting a metal strip;

[0036] Figure 6 It is a schematic diagram of the defective parts on the surface of the metal belt;

[0037] Figure 7 It is a schematic diagram of the cooperation between the metal belt and the rolling table;

[0038] Figure 8It is a structural schematic diagram of a rolling table;

[0039] Fig. 9 Schematic diagram of the distribution of external cutting marks and internal cutting marks on the metal strip;

[0040] Fig.10 It is a schematic diagram of the structure of the metal strip after being shaped by the rolling table;

[0041] Fig.11 for Figure 8 Magnified view at A. DETAILED DESCRIPTION

[0042] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0043] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0045] See also Figure 2 and Figure 3 , a metal strip edge trimming device 10, comprising: a straightening seat 100, a rolling table 200 and two edge trimming components 300 arranged in sequence along the transmission direction of the metal strip 20.

[0046] The metal strip 20 used as the raw material is wound into bundles when stored, and the strip surface will be curved after being unfolded. Therefore, before the metal strip 20 is trimmed, the metal strip 20 is first passed through the straightening seat 100 and the rolling table 200 to flatten the metal strip 20. After the metal strip 20 is shaped, it enters the trimming assembly 300 to improve the trimming accuracy.

[0047] The two edge trimming assemblies 300 are spaced apart on the conveying track of the metal belt 20 (eg Figure 3 As shown in the figure, the metal strip 20 is cut twice while passing through the metal strip edge trimming device 10, and the two edge trimming components 300 cooperate with progressive cutting to adjust the width of the metal strip 20 to the target size. For example, the target cutting amount is 0.2mm, the feed amount of the first edge trimming component 300 is 0.05mm, and the feed amount of the second edge trimming component 300 is 0.15mm. The feed amount is small during the first cutting, which is used to process the protruding part on the edge of the metal strip 20 and make its edge smooth, so as to prepare for the second cutting, improve the cutting accuracy, and avoid excessive single cutting amount resulting in large cutting surface roughness.

[0048] See also Figure 3 and Figure 4 The edge trimming assembly 300 includes a base 310, a spindle 320, and two cutting bases 330 located on the spindle 320. The two cutting bases 330 are arranged opposite to each other. Each cutting base 330 includes a threaded sleeve 331, a slide 332, and a cutter 333. The threaded sleeve 331 is rotatably arranged on the spindle 320. The threaded sleeve 331 is threadedly connected to the slide 332. When the threaded sleeve 331 is rotated, the cutting base 330 can slide along the axis of the spindle 320, thereby adjusting the spacing between the two cutters 333. Therefore, the threaded sleeve 331 can be rotated according to the width of the target metal strip 20. Since the spacing of the cutters 333 is adjustable, it can adapt to the edge trimming requirements of metal strips 20 of different sizes. That is, when the product specifications change, there is no need to re-make a mold of the corresponding size, which is conducive to saving the production cost of the equipment. Preferably, a knob 331a is provided on the threaded sleeve 331.

[0049] See also Figure 2 and Figure 3 Preferably, the metal strip edge trimming device 10 further includes a polisher 400, which is used to grind the metal strip 20 after passing through the edge trimming assembly 300. The polisher 400 can be a grinding wheel, a grinding belt, or other tool for grinding and polishing. The edge of the metal strip 20 is polished by the polisher 400 to remove burrs generated during the cutting process, thereby further improving the accuracy of the edge trimming of the metal strip 20.

[0050] See also Figure 2 and Figure 7Preferably, a guide assembly 500 is provided between the straightening seat 100 and the rolling table 200, and the guide assembly 500 includes a guide rail 510 and two anti-deviation wheels 520 located on the guide rail 510, and the anti-deviation wheel 520 includes a nut 521, a screw 522 and a bearing 523. The nut 521 is slidably arranged in the guide rail 510, and the screw 522 is threadedly connected with the nut 521 after passing through the bearing 523. The nut 521 can slide in the guide rail 510 by turning the screw 522, so as to adjust the distance between the two bearings 523 according to the width of the metal strip 20 to be chamfered, so that the outer wall of the bearing 523 contacts the outer wall of the metal strip 20, so as to limit the horizontal freedom of the metal strip 20, prevent it from shaking in the horizontal direction or deviating from the original transmission trajectory during transmission, and allow the metal strip 20 to smoothly enter the chamfering assembly 300 to complete the edge material cutting process, thereby improving the cutting accuracy.

[0051] It can be understood that when the edge material 21 on the metal strip 20 is cut off, the cutting force is generated by the displacement of the metal strip 20, and the blade of the cutter 333 separates the main body of the metal strip 20 and the edge material 21. The blade on the cutter 333, the main body of the metal strip 20 and the edge material 21 cooperate with each other as shown in FIG. Figure 5 As shown, the moving direction of the metal belt 20 is shown by the arrow in the figure. When the edge of the metal belt 20 is uneven, the cutting force will change, thereby generating a component force perpendicular to the moving direction of the metal belt 20, causing the metal belt 20 to shake and deviate during the movement, and the cutting track 22 ( Figure 5 The position indicated by the dotted line in the middle) is then offset in the horizontal direction, and the edge of the cut metal strip 20 is rough and uneven, with obvious pits 23 (such as Figure 6 As shown) even cuts off the metal strip 20.

[0052] See also Figure 7 , Figure 8 and Fig.11 To solve the above problems, the rolling table 200 includes a fixed seat 210, a first roller 220, a second roller 230, a first cushion block 240, a second cushion block 250 and a scraper 260. The fixed seat 210 is provided with two mounting parts 211. The first cushion block 240 and the second cushion block 250 are respectively arranged in the two mounting parts 211. Specifically, the first cushion block 240 is located in the mounting part 211 close to the straightening seat 100. When the metal strip 20 moves, it first passes through the first cushion block 240 and then reaches the second cushion block 250.

[0053] The first roller 220 is located above the first cushion block 240 . The first cushion block 240 is provided with a convex strip 241 . The second roller 230 is located above the second cushion block 250 . The scraper 260 is provided in the second cushion block 250 .

[0054] The first roller 220 and the second roller 230 are both provided with a plurality of rolling edges 11 .

[0055] A blanking portion 212 is provided between the two mounting portions 211 , and waste scraped off when the metal strip 20 passes through the scraper 260 will fall into the blanking portion 212 .

[0056] A positioning groove 251 is formed in the middle of the second cushion block 250 , and the scraper 260 is embedded in the positioning groove 251 . A wedge-shaped insert (not shown) is provided between the bottom of the positioning groove 251 and the scraper 260 . The wedge-shaped insert supports the scraper 260 in the positioning groove 251 .

[0057] The principle of the rolling table 200 preventing the metal strip 20 from shaking and causing defects during the edge trimming process is as follows:

[0058] When the metal strip 20 enters the rolling table 200, it first passes through the gap between the first cushion block 240 and the first roller 220. The first cushion block 240 has a convex strip 241, and the first roller 220 has a rolling edge 11. When the first roller 220 cooperates with the first cushion block 240 to roll the metal strip 20, the convex strip 241 and the rolling edge 11 press out dents on the front and back sides of the metal strip 20.

[0059] Next, the metal strip 20 enters the gap between the second pad 250 and the second roller 230 in the same manner, and the second pad 250 cooperates with the second roller 230 to roll the metal strip 20 again, and the rolling edge 11 on the second roller 230 deepens the indentation on the front side of the metal strip 20, while the scraper 260 scratches the indentation on the back side of the metal strip 20;

[0060] After the above two rolling processes, the metal strip 20 is straightened and an outer cutting mark 24 and an inner cutting mark 25 are formed on the surface of the metal strip 20. The outer cutting mark 24 and the inner cutting mark 25 are distributed on the metal strip 20 as shown in FIG. Fig. 9 and Fig.10 As shown, the outer cutting mark 24 and the inner cutting mark 25 are both located on the edge of the metal strip 20 , and both are structurally weak locations on the metal strip 20 , and are also the cutting locations of the cutter 333 .

[0061] In this way, the spacing of the cutters 333 in the first chamfering assembly 300 is adjusted so that the blade of the cutter 333 is aligned with the outer cutting mark 24. When the metal strip 20 passes through the first chamfering assembly 300, the cutter 333 can perform the first chamfering along the outer cutting mark 24; similarly, the blade of the cutter 333 on the second chamfering assembly 300 is aligned with the inner cutting mark 25. When the metal strip 20 passes through the second chamfering assembly 300, the cutter 333 can perform the second chamfering along the inner cutting mark 25.

[0062] It should be emphasized that the outer cutting mark 24 and the inner cutting mark 25 are both structurally weak parts of the metal belt 20. Therefore, when the metal belt 20 deviates during the conveying process, the edge material 21 and the metal belt 20 body will be torn apart along the outer cutting mark 24 (or the inner cutting mark 25), avoiding the cutting track 22 extending toward the metal belt 20 body, resulting in uneven cutting surfaces, thereby overcoming the problems of low processing accuracy and high defect rate caused by the shaking of the metal belt 20. In addition, the processing of the outer cutting mark 24 and the inner cutting mark 25 utilizes the power of the metal belt 20 itself, and does not require additional drive components. The equipment has low manufacturing cost and simple maintenance. The processing is completed during the movement of the metal belt 20, and the processing efficiency is high.

[0063] See also Figure 2 The portion of the metal strip 20 that is cut by the first trimming assembly 300 will have burrs, so before the second trimming operation, the burrs need to be removed to improve the processing accuracy. In one embodiment, a shaping assembly 600 is provided between the two trimming assemblies 300. The shaping assembly 600 includes a limit block 610, a pressure plate 620 and a spring 630. The spring 630 provides elastic force to drive the pressure plate 620 to press the metal strip 20 toward the limit block 610, and then the limit block 610 scrapes off the burrs on the metal strip 20.

[0064] See also Figure 2 In one embodiment, a hydraulic cylinder 110 and a shaping press head 120 are provided on the straightening seat 100, and the hydraulic cylinder 110 is used to drive the shaping press head 120 to press the metal strip 20. The shaping press head 120 presses the metal strip 20, and the winding mechanism pulls the metal strip 20 forward, thereby straightening the metal strip 20 to prepare for the subsequent edge trimming process.

[0065] A metal strip edge trimming production process, based on the metal strip edge trimming device 10, comprises the following steps:

[0066] The metal strip is passed through the metal strip edge trimming device 10, and the end of the metal strip is fixed on a winding mechanism (not shown), and the winding mechanism winds up the metal strip 20. The winding mechanism provides traction to make the metal strip 20 pass through the straightening seat 100, the rolling table 200 and the two edge trimming assemblies 300 in sequence;

[0067] When the metal belt moves, it first enters the straightening seat 100, and the straightening seat 100 performs preliminary shaping on the metal belt 20, and straightens the bent metal belt 20;

[0068] The rolling table 200 rolls the outer wall of the metal strip 20 to form an outer cutting mark 24 and an inner cutting mark 25, and at the same time, further shapes the metal strip 20 so that the metal strip 20 is in a straight state when entering the straightening seat 100;

[0069] When the metal strip enters the first edge cutting assembly 300, the upper cutter 333 thereof cuts the metal strip 20 along the outer cutting mark 24;

[0070] When the metal strip enters the second edge trimming assembly 300 , the cutter 333 thereon cuts 25 the metal strip 20 along the inner cutting mark to obtain the metal strip 20 of the target size.

[0071] It should be noted that before the trimming operation is performed, the outer cutting mark 24 and the inner cutting mark 25 are processed first. The outer cutting mark 24 and the inner cutting mark 25 are both structurally weak parts on the metal strip 20. The cutter 333 is easier to cut off the edge material 21, and when the metal strip 20 shakes or deviates, the pulling force generated will tear it along the outer cutting mark 24 (or the inner cutting mark 25), avoiding the cutting track 22 from extending toward the main body of the metal strip 20, resulting in uneven cutting surfaces, thereby overcoming the problems of low processing accuracy and high defective rate caused by the shaking of the metal strip 20.

[0072] The above-mentioned metal strip edge trimming device 10 has the following advantages:

[0073] 1. Before edge trimming, the metal strip 20 is shaped and straightened to improve cutting accuracy;

[0074] 2. The distance between the two cutters 333 can be adjusted by rotating the threaded sleeve 331, so that the metal strips 20 of different sizes can be trimmed;

[0075] 3. The edge trimming assembly 300 is arranged on the conveying path of the metal belt, and utilizes the power of the metal belt to perform cutting, without the need for additional driving equipment, thereby saving equipment manufacturing costs and improving edge trimming efficiency;

[0076] 4. Two sets of edge trimming assemblies 300 are provided to perform two cutting operations on the metal strip 20 to improve the edge trimming accuracy.

[0077] 5. Before implementing the edge trimming operation, process the outer cutting mark 24 and the inner cutting mark 25 on the metal strip 20 to form a structural weak point on the edge of the metal strip 20, and let the cutter 333 cut along the outer cutting mark 24 and the inner cutting mark 25. On the one hand, the wear of the cutter 333 is reduced, and when the metal strip 20 shakes, the edge material 21 is torn along the outer cutting mark 24 (or the inner cutting mark 25), avoiding the cutting track 22 extending toward the main body of the metal strip 20 and causing defects.

[0078] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A metal strip edge trimming device for adjusting the width of a metal strip, characterized in that: include: A straightening seat, a rolling table and two edge trimming components are sequentially arranged along the conveying direction of the metal strip; The straightening seat cooperates with the rolling table to shape the metal strip; The two edge cutting assemblies are arranged at intervals, and the edge cutting assemblies are used for cutting the metal strip; The edge trimming assembly includes a base, a spindle and two cutting bases located on the spindle, the two cutting bases are arranged facing each other, each cutting base includes a threaded sleeve, a slide and a cutter, the threaded sleeve is rotatably arranged on the spindle, the threaded sleeve is threadedly connected to the slide, and the threaded sleeve is rotated to adjust the distance between the two cutters; The rolling table includes a fixed seat, a first roller, a second roller, a first cushion block, a second cushion block and a scraper. The fixed seat is provided with two mounting parts, the first cushion block and the second cushion block are respectively arranged in the two mounting parts, the first roller is located above the first cushion block, the first cushion block is provided with a convex strip, the second roller is located above the second cushion block, and the scraper is arranged in the second cushion block; wherein, the first roller and the second roller are both provided with a plurality of rolling edges; a blanking part is provided between the two mounting parts; a positioning groove is opened in the middle and upper part of the second cushion block, the scraper is embedded in the positioning groove, and a wedge-shaped insert is provided between the bottom of the positioning groove and the scraper.

2. The metal strip edge trimming device according to claim 1, characterized in that: It also includes a polisher, which is used to polish the metal belt after passing through the edge chamfering assembly.

3. The metal strip edge trimming device according to claim 1, characterized in that: A guide assembly is provided between the straightening seat and the rolling table. The guide assembly includes a guide rail and two anti-deviation wheels located on the guide rail. The anti-deviation wheel includes a nut, a screw and a bearing. The nut is slidably arranged in the guide rail, and the screw passes through the bearing and is threadedly connected to the nut.

4. The metal strip edge trimming device according to claim 1, characterized in that: A shaping component is provided between the two edge-cutting components. The shaping component comprises a limit block, a pressure plate and a spring. The spring provides elastic force to drive the pressure plate to abut against the limit block. The limit block contacts the edge of the metal strip to remove burrs.

5. The metal strip edge trimming device according to claim 1, characterized in that: The straightening seat is provided with a hydraulic cylinder and a shaping press head, and the hydraulic cylinder is used to drive the shaping press head to press the metal strip.

6. The metal strip edge trimming device according to claim 1, characterized in that: The threaded sleeve is provided with a knob.

7. A metal strip edge trimming production process, based on the metal strip edge trimming equipment according to claim 1, characterized in that: The steps include: The metal strip is passed through the metal strip edge trimming device, the end of the metal strip is fixed on the winding mechanism, and the winding mechanism winds up the metal strip; When the metal belt moves, it first enters the straightening seat, which flattens the metal belt; The rolling table rolls on the outer wall of the metal strip to form outer cutting marks and inner cutting marks; When the metal strip enters the first edge cutting assembly, the upper cutter cuts the metal strip along the outer cutting mark; When the metal strip enters the second edge trimming assembly, the cutter thereon cuts the metal strip along the inner cutting mark to obtain a metal strip of target size.

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