Automatic chamfering equipment for metal alloy resistor

Abstract

The invention discloses automatic chamfering processing equipment for a metal alloy resistor. The automatic chamfering processing equipment comprises a cleaning mechanism, a traction mechanism, two reels and a chamfering mechanism, the chamfering mechanism comprises a base, a coiled material retaining clamp and two tool rests, two sliding blocks are arranged on the base, a tool is arranged on each tool rest, and the coiled material retaining clamp is arranged on one tool rest; the coiled material retaining clamp comprises two floating supports which are oppositely arranged, each floating support is provided with at least two limiting rods, the limiting rods are located on the two sides of the cutter, and gaps are formed between the cutter and the limiting rods. The cutter is arranged on the feeding track of the alloy resistor coiled material, and a chamfer is machined in the rolling process of the alloy resistor coiled material, so that the machining efficiency of an alloy resistor is improved; the cleaning mechanism is matched with the traction mechanism, so that the alloy resistor coiled material is kept in a tensioning state in the feeding process, and the coiled material is prevented from transversely deviating in the chamfering process; a coiled material retaining clamp is arranged in the chamfering mechanism, alloy resistor coiled materials are fixed on the two sides of a cutter through limiting rods, and the chamfering machining precision is further improved.

Description

Technical Field

[0001] The invention relates to the field of alloy resistor production, in particular to an automatic chamfering processing device for metal alloy resistors. Background Art

[0002] Figure 1 It is a cross-sectional schematic diagram of an alloy resistor coil 20, which is a semi-finished product in the process of preparing the alloy resistor. In the subsequent workstations, the coil needs to be cut, adjusted in resistance, and other processes before it can be processed into an alloy resistor.

[0003] Among them, burrs will be formed at the edge of the alloy resistor coil 20 during the production process. These burrs will cause inconsistent product dimensions and affect the resistance value of the alloy resistor. Therefore, before the resistance adjustment process, it is necessary to process chamfers 21 on the outside of the alloy resistor plate to remove the burrs.

[0004] In the existing process, the alloy resistor coil 20 is first cut into particles, and then the alloy resistor semi-finished product is chamfered. However, the particle cutting process requires clamping, conveying, and unloading of each product entering the chamfering processing equipment. The speed of the equipment to implement chamfering is much lower than the speed of cutting particles. It is necessary to configure multiple chamfering processing equipment to chamfer the alloy resistor semi-finished products, which will lead to discontinuity in the upstream and downstream processing of the alloy resistor production line, and the problem of semi-finished products piling up at the middle station; on the other hand, the difficulty in adjusting the chamfering process to before particle cutting is that the alloy resistor coil 20 is strip-shaped and flexible, and there is a problem of difficulty in positioning. At the same time, when the coil is cut, it is easy to cause radial displacement, and the size of the chamfer cannot be guaranteed. The inconsistent chamfering process leads to inconsistent sizes of the alloy resistors obtained by subsequent particle cutting, which will increase the error in the resistance value of the obtained alloy resistor and affect the processing accuracy of the alloy resistor. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an automated chamfering processing device for metal alloy resistors, thereby improving the processing efficiency of alloy resistor coils and the accuracy of chamfering processing.

[0006] The objective of the present invention is achieved through the following technical solutions: An automatic chamfering processing device for metal alloy resistors, comprising: a cleaning mechanism, a traction mechanism, two reels and a chamfering mechanism; The alloy resistor coil is arranged on one of the reels, the end of the alloy resistor coil is arranged on the other reel, and the cleaning mechanism, the chamfering mechanism and the traction mechanism are arranged in sequence along the feeding direction of the alloy resistor coil; The chamfering mechanism comprises a base, a coil holding clamp and two tool holders, the base is provided with two sliders, the two tool holders are respectively provided on the two sliders, each tool holder is provided with a tool, and the coil holding clamp is provided on one of the tool holders; The coil holding clamp comprises two floating brackets arranged facing each other, and at least two limiting rods are arranged on the floating brackets. The limiting rods are located on both sides of the tool, and a gap is arranged between the tool and the limiting rods.

[0007] In one of the embodiments, a guide hole is provided on the tool holder, a sliding portion matching the guide hole is provided on the two floating brackets, and the limiting rod is located on the sliding portion.

[0008] In one of the embodiments, a roller is provided on the position of the limit rod that contacts the alloy resistor coil.

[0009] In one embodiment, a plurality of chamfering mechanisms are provided, and the plurality of chamfering mechanisms are spaced apart and distributed along the feeding direction of the alloy resistor coil.

[0010] In one embodiment, the chamfering mechanism also includes a distance adjusting block and a screw rod. The tool holder is provided with a distance adjusting hole. The tool can be slidably disposed in the distance adjusting hole. The screw rod is threadedly connected to the distance adjusting block, and the screw rod extends into the distance adjusting hole to abut against the tool.

[0011] In one embodiment, the tool is provided with a cutting portion, and a cross section of the cutting portion is in a "V" shape.

[0012] In one of the embodiments, a guide wheel is provided on the edge of the tool holder.

[0013] In one embodiment, the cleaning mechanism includes a base, a felt, a pressure plate, a supporting platform and a downward pressure cylinder. The pressure plate is arranged at the output end of the downward pressure cylinder. The pressure plate pushes the felt to press the alloy resistor coil on the supporting platform. The felt is used to wipe off foreign matter on the surface of the alloy resistor coil.

[0014] In one of the embodiments, the cleaning mechanism is provided with two traction wheel groups, each of which is provided with a felt, the pressure plate is located on one of the felt extension tracks, the moving direction of the felt on the pressure plate is consistent with the feeding direction of the alloy resistor coil, the supporting platform is located on the other felt extension track, the moving direction of the felt on the supporting platform is consistent with the feeding direction of the alloy resistor coil; the traction wheel group includes a first traction wheel and a second traction wheel, the felt is rolled up on the first traction wheel, and the end of the felt is connected to the second traction wheel.

[0015] In one embodiment, the pressure plate and the supporting platform are both provided with locking members, and the locking members include a main body, a limiting roller and a stop block, the limiting roller and the stop block are respectively located on both sides of the main body, and a locking cylinder matching the stop block is provided on the base, and the output end of the locking cylinder extends out to push the stop block to prevent the felt from moving.

[0016] The above-mentioned automated chamfering processing equipment for metal alloy resistors has the following beneficial effects: 1. The tool is set on the feeding track of the alloy resistor coil, and the chamfer is processed during the winding of the alloy resistor coil to improve the processing efficiency of the alloy resistor; 2. The cleaning mechanism cooperates with the traction mechanism to keep the alloy resistor coil in a tensioned state during the feeding process, avoiding lateral deviation of the coil during the chamfering process; 3. A coil holding clamp is provided in the chamfering mechanism, and the limit rod is used to fix the alloy resistor coil on both sides of the tool to further improve the accuracy of the chamfering process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 It is a cross-sectional schematic diagram of an alloy resistor coil; Figure 2 It is a structural schematic diagram of an automated chamfering processing device for metal alloy resistors; Figure 3 for Figure 2 An enlarged schematic diagram at A; Figure 4 It is a structural schematic diagram of the chamfering mechanism; Figure 5 The figure is a schematic diagram of the disassembly of the chamfering mechanism; Figure 6 is a cross-sectional schematic diagram of the tool holder; Figure 7 It is a schematic diagram of the contact state between the tool and the alloy resistance coil; Figure 8 It is a structural schematic diagram of the cleaning mechanism; Fig. 9 It is a schematic diagram of the internal structure of the cleaning mechanism; Fig.10 It is a schematic diagram of the cooperation between the felt and the locking piece. DETAILED DESCRIPTION

[0019] 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.

[0020] 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.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. 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 of the related listed items.

[0022] See also Figure 2 The present invention provides an automated chamfering processing device 10 for metal alloy resistors, which includes: a cleaning mechanism 100, a traction mechanism 200, two reels 300 and a chamfering mechanism 400.

[0023] See also Figure 2 The alloy resistor coil 20 is arranged on one of the reels 300, and the end of the alloy resistor coil 20 is arranged on the other reel 300. The cleaning mechanism 100, the chamfering mechanism 400 and the traction mechanism 200 are arranged in sequence along the feeding direction of the alloy resistor coil; See also Figure 4 , Figure 5 and Figure 6 The chamfering mechanism 400 includes a base 410, a coil holding clamp 420 and two tool holders 430. Two sliders 411 are provided on the base 410. The two tool holders 430 are respectively provided on the two sliders 411. Each tool holder 430 is provided with a tool 431. The coil holding clamp 420 is provided on one of the tool holders 430. Preferably, the tool 431 is provided with a cutting portion 4311, and the cross-section of the cutting portion 4311 is "V"-shaped.

[0024] The coil holding clamp 420 includes two floating brackets 421 disposed opposite to each other. The floating brackets 421 are provided with at least two limiting rods 422 . The limiting rods 422 are located on both sides of the cutter 431 . A gap is provided between the cutter 431 and the limiting rods 422 .

[0025] When the equipment is running, when the alloy resistor coil 20 is fed, the cleaning mechanism 100 contacts the alloy resistor coil 20, wipes foreign matter on its surface, and generates resistance to straighten the alloy resistor coil 20, so that it is in a tensioned state during the feeding process. The traction mechanism 200 is used to traction the alloy resistor coil 20 for feeding. The feeding process of the alloy resistor coil 20 needs to pass through the tool 431, and the tool 431 chamfers the edge of the alloy resistor coil 20, and then the reel 300 located at the position of the traction mechanism 200 reels the alloy resistor coil 20 that has completed the chamfering process.

[0026] A coil holding clamp 420 is provided on one of the tool holders 430, and a limiting rod 422 on the coil holding clamp 420 is used to limit the alloy resistor coil 20 to prevent the alloy resistor coil 20 from being offset due to the chip force generated by the tool 431 during the chamfering process, thereby improving the chamfering processing accuracy.

[0027] Furthermore, adjusting the position of the slider 411 can change the cutting amount of the cutter 431 , and the position of the cutter 431 can be flexibly adjusted according to the width of the alloy resistor coil 20 , so that the device can adapt to alloy resistor coils 20 of various sizes.

[0028] The above-mentioned automatic chamfering processing equipment 10 for metal alloy resistors has the following beneficial effects: 1. The cutter 431 is arranged on the feeding track of the alloy resistor coil, and the chamfer is processed during the winding of the alloy resistor coil, thereby improving the processing efficiency of the alloy resistor; 2. The cleaning mechanism 100 cooperates with the traction mechanism 200 to keep the alloy resistor coil in a tensioned state during the feeding process, thereby preventing the coil from lateral deviation during the chamfering process; 3. The chamfering mechanism 400 is provided with a coil holding clamp 420, and a limit rod 422 is used to fix the alloy resistor coil on both sides of the tool 431 to further improve the accuracy of the chamfering process.

[0029] It can be understood that the greater the amount of feed during the cutting process, the greater the resistance to the alloy resistor coil 20 will be, and therefore the easier it is to cause the alloy resistor coil to deviate. In order to ensure the accuracy of chamfering, multiple chamfering mechanisms 400 are provided, and multiple chamfering mechanisms 400 are spaced along the feeding direction of the alloy resistor coil. Multiple chamfering mechanisms 400 are arranged on the feeding track of the alloy resistor coil 20, and the position of the slider 411 in each chamfering mechanism 400 is adjusted so that the spacing between the two cutters 431 on each chamfering mechanism 400 is gradually reduced, so that the alloy resistor coil 20 cuts a part of the edge material when passing through each chamfering mechanism 400. Multiple chamfering mechanisms 400 cut the edge material in stages, and by reducing the amount of cutting each time, the resistance between the cutter 431 and the alloy resistor coil 20 during the chamfering process is reduced, so that the alloy resistor coil 20 remains stable when passing through the chamfering mechanism 400, and the accuracy of the chamfering process is ensured.

[0030] See also Figure 5 and Figure 6 In one embodiment, a guide hole 432 is provided on the tool holder 430, and a sliding part 4211 matching the guide hole 432 is provided on the two floating brackets 421. The sliding parts 4211 on the two floating brackets 421 are inserted into the guide hole 432, and the limiting rod 422 is located on the sliding part 4211. The floating bracket 421 is moved to make the sliding part 4211 slide along the hole wall of the guide hole 432, so as to adjust the spacing between the limiting rods 422 on the two floating brackets 421, so that the limiting rods 422 can adapt to alloy resistor coils 20 of different thicknesses. Preferably, a roller 423 is provided on the limiting rod 422 at a position in contact with the alloy resistor coil 20. The roller 423 is used to guide the alloy resistor coil 20, so as to further improve the feeding stability of the alloy resistor coil 20 during the processing of the chamfer 21.

[0031] Preferably, a guide wheel 434 is provided on the edge of the tool holder 430 . The guide wheel 434 is used to guide the alloy resistor coil 20 into the chamfering mechanism 400 .

[0032] See also Figure 5 and Figure 6 In one embodiment, the chamfering mechanism 400 further includes a distance adjusting block 440 and a screw 450. A distance adjusting hole 433 is provided on the tool holder 430. The tool 431 is slidably disposed in the distance adjusting hole 433. The screw 450 is threadedly connected to the distance adjusting block 440, and the screw 450 extends into the distance adjusting hole 433 and abuts against the tool 431. During the process of chamfering the alloy resistor coil 20, a thrust is generated so that the tool 431 and the end of the screw 450 are kept in close contact, that is, the screw 450 can be rotated to adjust the feed amount of the tool 431, thereby controlling the size of the chamfer of the tool 431.

[0033] See also Figure 3It can be seen that during the chamfering process of the alloy resistor coil 20, the cleaning mechanism 100 and the traction mechanism 200 need to cooperate to keep the alloy resistor coil 20 taut. Specifically, the cleaning mechanism 100 includes a base 110, a felt 120, a pressing plate 130, a bearing platform 140 and a pressing cylinder 150. The pressing plate 130 is located on the output end of the pressing cylinder 150, and the alloy resistor coil 20 passes between the bearing platform 140 and the pressing plate 130. When the output end of the downward pressing cylinder 150 is extended, it will push the pressing plate 130 close to the supporting platform 140. In the process of the pressing plate 130 approaching the supporting platform 140, it will push against the felt 120 to press it down together, pressing the alloy resistor coil 20 onto the supporting platform 140, and the felt 120 will contact with the surface of the alloy resistor coil 20 to generate resistance. At this time, the traction mechanism 200 will pull the alloy resistor coil 20 to straighten it, thereby keeping the alloy resistor coil 20 taut during the feeding process; at the same time, the felt 120 can wipe off foreign matter on its surface during the feeding process of the alloy resistor coil 20.

[0034] It should be noted that the cleaning mechanism 100 uses the felt 120 to wipe the pollutants on the surface of the alloy resistor coil 20, which will cause the part of the felt 120 that contacts the alloy resistor coil 20 to become dirty. To ensure the cleaning effect of the felt 120, it is necessary to drag the felt 120 regularly to allow the clean part of the felt 120 to contact the alloy resistor coil 20 and remove the contaminated felt 120. To facilitate the transfer of the contaminated felt 120, it is necessary to make the moving direction of the felt 120 perpendicular to the moving direction of the alloy resistor coil 20. In this way, after the operator drives the downward pressure cylinder 150 to retract, the contaminated part of the felt 120 can be pulled out from the side of the cleaning mechanism 100 to make the contaminated felt 120 leave the cleaning mechanism 100. However, since the moving direction of the felt 120 is perpendicular to the moving direction of the alloy resistor coil 20, dragging the felt 120 may easily interfere with the feeding action of the alloy resistor coil 20. Therefore, the equipment needs to be shut down and the downward pressure cylinder 150 drives the pressure plate 130 away from the supporting platform 140. When dragging the felt 120, the equipment needs to be shut down each time the felt 120 is moved, which affects the feeding of the alloy resistor coil 20 and makes the chamfer 21 processing discontinuous, that is, it affects the chamfering processing efficiency and easily reduces the chamfering processing accuracy. It should be emphasized that before dragging the felt 120, although the downward pressure cylinder 150 is driven to retract to release the pressure applied to the felt 120, the surface of the felt 120 is rough, and the friction generated in the process of dragging the felt 120 still has the probability of causing the alloy resistor coil 20 to shift laterally.

[0035] See also Figure 8 , Fig. 9 and Fig.10In order to solve the above problems, the cleaning mechanism 100 is provided with two traction wheel groups 160, each traction wheel group 160 is provided with a felt 120, the pressing plate 130 is located on the extension track of one of the felts 120, the moving direction of the felt 120 on the pressing plate 130 is consistent with the feeding direction of the alloy resistor coil, the carrying platform 140 is located on the extension track of the other felt 120, the moving direction of the felt 120 on the carrying platform 140 is consistent with the feeding direction of the alloy resistor coil 20, and the moving direction of the felt 120 is as follows: Fig. 9 Indicated by the arrow.

[0036] The traction wheel group 160 includes a first traction wheel 161 and a second traction wheel 162 . The felt 120 is rolled up on the first traction wheel 161 , and the end of the felt 120 is connected to the second traction wheel 162 .

[0037] See also Fig.10 A locking member 170 is provided on the pressing plate 130 and the supporting platform 140. The locking member 170 includes a main body 171, a limiting roller 172 and a stop block 173. The limiting roller 172 and the stop block 173 are respectively located on both sides of the main body 171. A locking cylinder 111 matching the stop block 173 is provided on the base 110. The output end of the locking cylinder 111 extends out to push the stop block 173 to prevent the felt 120 from moving.

[0038] See also Fig. 9 The process of transferring the contaminated felt 120 by the improved cleaning mechanism 100 is as follows: Keep the pressing cylinder 150 in the extended state and keep feeding the alloy resistance coil 20; While keeping the alloy resistor coil 20 from feeding, the locking cylinder 111 is retracted so that the stop block 173 no longer presses the felt 120, thereby releasing the lock on the felt 120 and allowing the alloy resistor coil 20 to drive the felt 120 to move along its feeding direction, so that the contaminated part of the felt 120 leaves the position of the main body 171. When the output end of the locking cylinder 111 is extended again, the stop block 173 presses the felt 120 tightly against the main body 171 to prevent the felt 120 from continuing to move.

[0039] It should be noted that, in the improved cleaning mechanism 100, the unwinding direction of the felt 120 is consistent with the feeding direction of the alloy resistor coil 20, and the friction between the felt 120 and the alloy resistor coil 20 can be used to pull the felt 120 to unwind, and the rotation speed of the first traction wheel 161 is controlled during the movement of the felt 120, so that the unwinding speed of the felt 120 is lower than the feeding speed of the alloy resistor coil 20, and sufficient friction is generated while moving the felt 120 to allow the felt 120 to wipe the alloy resistor coil 20, thereby ensuring a stable cleaning effect on the alloy resistor coil 20, and generating sufficient resistance to keep the alloy resistor coil 20 in a tensioned state.

[0040] It should be emphasized that during the process of transferring the contaminated felt 120, the alloy resistor coil 20 maintains a feeding state, and there is no need to interrupt the chamfering process, which can improve the chamfering efficiency and eliminate the need to repeatedly start and stop the equipment, which is beneficial to reducing the vibration generated during the startup process, making the chamfering process continuous and improving the cutting accuracy of the chamfer 21.

[0041] 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. An automated chamfering equipment for metal alloy resistors, characterized in that: include: Cleaning mechanism, traction mechanism, two reels and chamfering mechanism; The alloy resistor coil is arranged on one of the reels, the end of the alloy resistor coil is arranged on the other reel, and the cleaning mechanism, the chamfering mechanism and the traction mechanism are arranged in sequence along the feeding direction of the alloy resistor coil; The chamfering mechanism comprises a base, a coil holding clamp and two tool holders, the base is provided with two sliders, the two tool holders are respectively provided on the two sliders, each tool holder is provided with a tool, and the coil holding clamp is provided on one of the tool holders; The coil holding clamp comprises two floating brackets arranged facing each other, and at least two limiting rods are arranged on the floating brackets. The limiting rods are located on both sides of the tool, and a gap is arranged between the tool and the limiting rods.

2. The automatic chamfering processing equipment for metal alloy resistors according to claim 1, characterized in that: A guide hole is provided on the tool holder, a sliding part matching the guide hole is provided on the two floating brackets, and the limiting rod is located on the sliding part.

3. The automatic chamfering processing equipment for metal alloy resistors according to claim 2, characterized in that: A roller is arranged on the position of the limit rod in contact with the alloy resistance coil.

4. The automatic chamfering processing equipment for metal alloy resistors according to claim 1, characterized in that: There are multiple chamfering mechanisms, and the multiple chamfering mechanisms are distributed at intervals along the feeding direction of the alloy resistor coil.

5. The automatic chamfering processing equipment for metal alloy resistors according to claim 1, characterized in that: The chamfering mechanism also includes a distance adjusting block and a screw rod. The tool holder is provided with a distance adjusting hole. The tool is slidably arranged in the distance adjusting hole. The screw rod is threadedly connected to the distance adjusting block, and the screw rod extends into the distance adjusting hole to abut against the tool.

6. The automated chamfering processing equipment for metal alloy resistors according to claim 1, characterized in that: The cutter is provided with a cutting portion, and the cross section of the cutting portion is in a "V" shape.

7. The automated chamfering processing equipment for metal alloy resistors according to claim 1, characterized in that: A guide wheel is arranged on the edge of the tool holder.

8. The automated chamfering processing equipment for metal alloy resistors according to claim 1, characterized in that: The cleaning mechanism includes a base, a felt, a pressure plate, a supporting platform and a downward pressure cylinder. The pressure plate is arranged at the output end of the downward pressure cylinder. The pressure plate pushes the felt to press the alloy resistor coil on the supporting platform. The felt is used to wipe off foreign matter on the surface of the alloy resistor coil.

9. The automated chamfering processing equipment for metal alloy resistors according to claim 8, characterized in that: The cleaning mechanism is provided with two traction wheel groups, each of which is provided with a felt, the pressing plate is located on one of the felt extension tracks, the moving direction of the felt on the pressing plate is consistent with the feeding direction of the alloy resistor coil, the supporting platform is located on the other felt extension track, the moving direction of the felt on the supporting platform is consistent with the feeding direction of the alloy resistor coil; the traction wheel group includes a first traction wheel and a second traction wheel, the felt is rolled up on the first traction wheel, and the end of the felt is connected to the second traction wheel.

10. The automated chamfering processing equipment for metal alloy resistors according to claim 8, characterized in that: The pressure plate and the supporting platform are both provided with locking parts, and the locking parts include a main body, a limiting roller and a stop block. The limiting roller and the stop block are respectively located on both sides of the main body. A locking cylinder matching the stop block is provided on the base, and the output end of the locking cylinder extends out to push the stop block to prevent the felt from moving.

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