Leadless coating structure for resistor production

Abstract

The utility model provides a leadless coating structure for resistor production, which comprises a transmission wheel, a base arranged above the transmission wheel, a sealing cover fixedly mounted at the upper end of the base, and a connecting strip movably mounted between the base and the sealing cover. According to the leadless coating structure for resistor production, through the arrangement of the structures such as the protrusions, the limiting holes, the base and the limiting springs, the protrusions are ingeniously matched with the limiting holes, and it is ensured that the transmission wheels can accurately transmit power to the connecting strips. In the transmission process, the protrusions are clamped into the limiting holes all the time, so that the connecting strips stably move in the preset direction and do not deviate or shake, and the stability of the structure is further enhanced through the arrangement of the limiting springs. Under the condition of thermal expansion and cold contraction, the limiting spring can pull the base to prevent the base from deviating outwards due to thermal expansion, the limiting spring can be matched with the base to recover to the initial state during contraction, and the stability of the base under different temperature conditions is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to resistance production technical field more specifically, relate to a resistance production is with no lead coating structure. BACKGROUND

[0002] With the continuous development of electronic technology, resistance as indispensable element in electronic circuit, its demand is increasing day by day.In the production process of resistance, coating is an important link, it not only can protect resistance element, can also play the role of insulation, moistureproof etc.

[0003] But the coating structure for resistance production of prior art has the following problems when in use:

[0004] (1) traditional resistance coating method usually adopts lead coating, and this method has some problems.First, lead coating needs to weld lead on resistance, which not only increases production process and cost, but also may cause the performance of resistance to be affected;

[0005] (2) secondly, in the coating process, due to the instability of transmission system or inaccurate positioning, may cause the coating of resistance to be uneven, affect product quality.And in the environment with large temperature change, traditional coating structure may be deformed or deviated due to thermal expansion and contraction.

[0006] The utility model can play the role of not needing lead in the coating process, and ensure that the connecting strip does not deviate or shake in the moving process, so as to ensure the position accuracy of resistance in the coating process, greatly improve the quality and consistency of coating, and prevent the deformation or deviation of base when temperature changes in the heating process. UTILITY MODEL CONTENT

[0007] The utility model aims at solving the technical problem in the above background art, and provides a leadless coating structure for resistance production.

[0008] In order to achieve the above object, the utility model provides the following technical scheme: a leadless coating structure for resistance production, comprising: transmission wheel, the transmission wheel top is provided with base, the base upper end is fixedly installed with cover, the base and cover between movable mounting have connecting strip, the base and cover between fixed connection middle part form the slot, and the slot inside movable connection has connecting strip, the connecting strip and transmission wheel movable connection, the transmission wheel surface is provided with a plurality of convex around equidistance, the connecting strip surface is provided with a plurality of limiting holes, the limiting hole and convex are in accord with, all be provided with the accommodation groove between limiting hole.

[0009] Further preferred: the base upper end is provided with a movable slot, the connecting strip is contained in the movable slot and movably connected therewith, the middle part of the left and right ends of the base is provided with a connecting slot, and the outer end face of the connecting slot is fixedly provided with a connecting block at the front and rear ends.

[0010] Further preferred: the connecting block is L-shaped, the upper end of the connecting block is embedded in the inner connecting slot, and the front end of the inner wall of the connecting block is attached to the front end of the base and is threadedly connected with the front end of the base.

[0011] Further preferred: the surface of the base is provided with a plurality of fixed slots equidistantly on the front and rear sides, and the fixed slots are threadedly fixedly connected with fixed blocks.

[0012] Further preferred: the left side of the front and rear ends of the base is fixedly provided with a limiting spring, and the other end of the limiting spring is fixedly connected with the right side of the base.

[0013] Beneficial effects:

[0014] 1. By providing a base, a movable slot, and a cover, the base serves as the basic support component of the entire structure, providing a stable installation platform for the transmission wheel, the connecting strip, and the cover. The insertion slot between the cover and the base and the movable slot on the base provide an installation position for the connecting strip. The cover not only prevents the connecting strip from coming off the track during movement, but also forms a closed space with the base, protecting the internal components from external environmental interference, which helps to improve the movement accuracy of the connecting strip and reduce coating errors caused by unnecessary shaking or deviation.

[0015] 2. By providing a protrusion and a limiting hole, the protrusion on the surface of the transmission wheel fits with the limiting hole on the connecting strip. When the transmission wheel rotates, the protrusion will be inserted into the limiting hole, thereby driving the connecting strip to move stably in the predetermined direction. At the same time, the limiting hole restricts the protrusion, preventing the connecting strip from deviating or shaking during movement. Since the protrusion is always moving within the limiting hole, the connecting strip can only move in a direction parallel to the axis of the transmission wheel, avoiding position deviation caused by external interference or equipment vibration.

[0016] 3. By providing a limiting spring, during resistance coating, when the connecting strip enters the heating area (such as an oven) with the resistance, the base and the connecting strip will expand due to heat. The limiting spring can buffer and limit the expansion, preventing it from deviating outward due to thermal expansion, ensuring that the base can maintain a relatively stable position under thermal expansion. After heating is completed, the temperature decreases, and the thermal expansion ends, entering the contraction phase. At this time, the limiting spring cooperates with the base to contract, allowing the base to smoothly return to the initial state. Meanwhile, the front and rear ends of the base are provided with limiting springs, ensuring that the front and rear ends are uniformly stressed during thermal expansion and contraction, avoiding uneven deformation.

[0017] 4. In summary, the leadless coating structure for resistance production is provided with protrusions, limiting holes, bases and limiting springs, the ingenious cooperation of the protrusions and the limiting holes ensures that the transmission wheel can accurately transmit power to the connecting strip. During transmission, the protrusions are always clamped into the limiting holes, so that the connecting strip moves stably along the predetermined direction and cannot deviate or shake, and the setting of the limiting spring further enhances the stability of the structure. In the case of thermal expansion and cold contraction, the limiting spring can hold the base to prevent it from deviating outward due to thermal expansion, and can cooperate with the base to restore to the initial state when shrinking, ensuring the stability of the base under different temperature conditions. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a whole structure schematic view of the utility model.

[0019] Fig. 2 It is a base and connecting strip structure schematic view of the utility model.

[0020] Fig. 3 It is a base connecting structure schematic view of the utility model.

[0021] Figs. 1-3 Middle: 1, transmission wheel; 101, protrusion; 2, base; 201, movable groove; 202, connecting groove; 203, connecting block; 204, fixed groove; 205, fixed block; 206, limiting spring; 3, cover; 4, connecting strip; 401, limiting hole; 402, accommodating groove. DETAILED DESCRIPTION

[0022] The utility model embodiments will be described below with reference to the accompanying drawings. Figs. 1-3 The technical solutions in the utility model embodiments are clearly and completely described.

[0023] Please refer to Figs. 1-3The utility model embodiment, a kind of leadless coating structure for resistance production, it include: transmission wheel 1, transmission wheel 1 upper portion is provided with base 2, base 2 upper end is fixedly installed with cover 3, base 2 and cover 3 between movably installed with connecting strip 4, base 2 and cover 3 between fixedly connected middle part form the slot, and the slot inside movably connected with connecting strip 4, connecting strip 4 and transmission wheel 1 movably connect, transmission wheel 1 surface is provided with several protrusions 101 around equidistance, several limit holes 401 are set in the surface of connecting strip 4, limit hole 401 and protrusion 101 are in accord with, limit hole 401 between are all set with accommodating groove 402, when using the device, first the leftmost base 2 is fixed, so that it becomes a fixed point, then subsequent other base 2 is connected with it, then connecting strip 4 is placed in base 2 upper end and is in the middle, cover 3 is then fixed in base 2 upper end, so that cover 3 and base 2 middle part form a slot, and make connecting strip 4 be placed in it, then transmission wheel 1 is installed in the left side bottom of connecting strip 4, and several protrusions 101 are fixedly installed on the surface of transmission wheel 1 around equidistance, several limit holes 401 are set in the surface of connecting strip 4, and make protrusion 101 and limit hole 401 mutually accord with, then the resistance needing to be coated is placed in accommodating groove 402, when transmission wheel 1 rotates, transmission wheel 1 drives connecting strip 4 to move right on base 2 upper end, in moving process, protrusion 101 and limit hole 401 mutually match, so that the moving track of connecting strip 4 is more stable, and deviation does not occur, simultaneously, the resistance in accommodating groove 402 moves along with connecting strip 4, in turn through coating area, complete leadless coating.

[0024] In the embodiment of the utility model, the movable groove 201 is set up on the upper end of the base 2, the connecting strip 4 is accommodated in the movable groove 201 and movably connected therewith, the connecting groove 202 is set up in the middle of the left and right ends of the base 2, the connecting block 203 is fixedly installed on the front and rear ends of the outer end face of the connecting groove 202, the connecting block 203 is arranged in L shape, the upper end of the connecting block 203 is embedded in the inside of the connecting groove 202, the front end of the inner wall of the connecting block 203 is attached to the front end of the base 2, and is screw-connected with the front end of the base 2, the movable groove 201 is set up on the upper end of the base 2, so that the connecting strip 4 is placed on the movable groove 201, the movable groove 201 limits the connecting strip 4, prevents the connecting strip 4 from deviating in the moving process, helps to improve the movement accuracy of the connecting strip 4, reduces the coating error caused by unnecessary shaking or deviation, before use, a plurality of bases 2 are connected, the two bases 2 are attached to each other, when the connecting grooves 202 on the two bases 2 are attached, first, the protrusion on the upper end of the connecting block 203 is inserted into the inside of the connecting groove 202, with the connecting block 203 continuously inserted into the connecting groove 202, the inner wall of the connecting block 203 is attached to the base 2, and the middle part of the connecting block 203 is the connecting part of the two bases 2, then the connecting block 203 is fixed on the front and rear ends of the two bases 2 through the fixing member such as a bolt, so that the two bases 2 are more stable, the subsequent bases 2 are connected through this mode, the stability of the connection between the bases 2 is guaranteed, and it is ensured that the structure of the base 2 does not loosen or deform in the resistance production process.

[0025] In the embodiment of the utility model, the fixed grooves 204 are equidistantly set up on the front and rear sides of the surface of the base 2, the fixed blocks 205 are screw-fixedly connected in the fixed grooves 204, through the fixed grooves 204 set up on the base 2, the fixed blocks 205 can be installed in the fixed grooves 204, so that other components can be stably installed on the base 2 through the connection with the fixed blocks 205, for example, some auxiliary equipment, sensors or other components related to the coating process can be fixed on the base 2 through the fixed blocks 205, the quality and efficiency of coating are improved.

[0026] The utility model discloses a limit spring 206 is fixedly installed to the left side of the front end of base 2, and the other end of limit spring 206 is fixedly connected with the right side of base 2, since base 2 is connected by a plurality of base 2, therefore one end of limit spring 206 is fixedly connected on the left side base 2, and the base 2 is initial fixed base 2, and the other end of limit spring 206 is fixedly connected with the base 2 connected with the fixed point base 2 right end, in the resistance coating process, connecting strip 4 is driven by transmission wheel 1, and enters the oven interior and carries out heating, since connecting strip 4 moves on base 2, therefore a section of base 2 is also in the heating area, at this time, base 2 and connecting strip 3 all can appear thermal expansion phenomenon, since there is the slot gap between base 2 and cover 3, and connecting strip 3 is in the slot gap interior, therefore connecting strip thermal expansion still can move forward, and cannot be stuck and live and cannot move because of thermal expansion, when base 2 appears thermal expansion phenomenon, since one end of limit spring 206 is fixed, and the other end can limit base 2, when base 2 appears thermal expansion phenomenon, firmly hold the base 2, make it not run out of bias because of thermal expansion, when heating is completed, temperature reduces, at this time, thermal expansion phenomenon ends, starts to restore to initial state, and is contracted with limit spring 206, and the front and rear ends of base 2 are all provided with the limit spring 206, make it in thermal expansion and cold shrink process, and the front and rear ends are under the same stress.

[0027] Working principle: when using the device for resistance coating, first determine the first end base 2, then fix it, take the leftmost base 2 as the fixed point of the whole device, then connect and fix the remaining bases 2 to the right in turn, then fix and install the cover 3 on the fixed base 2, and the middle part of the fixed connection between the base 2 and the cover 3 forms a slot, and the movable slot 201 is opened on the upper end of the base 2 for placing and limiting the connecting strip 4, when the subsequent bases 2 are connected to the fixed point base 2 in turn, the two bases 2 are close to each other, when the connecting slots 202 on the two bases 2 are close to each other, the protrusion on the upper end of the connecting block 203 is inserted into the inside of the connecting slot 202, as the connecting block 203 continues to insert into the connecting slot 202, the inner wall of the connecting block 203 will be close to the base 2, and the middle part of the connecting block 203 is the connection between the two bases 2, the connecting block 203 is fixed on the front and rear ends of the two bases 2 through bolts and other fixing parts, to ensure the stability of the connection between the bases 2, and prevent loosening or deformation during resistance production, then place the connecting strip 4 in the movable slot 201 on the upper end of the base 2 and make it centered, to ensure that the connecting strip 4 can move stably in the movable slot 201 without deviation, the transmission wheel 1 is installed on the left side of the connecting strip 4, and a plurality of protrusions 101 are fixed and installed on the surface of the transmission wheel 1 at equal distances, a plurality of limiting holes 401 are opened on the surface of the connecting strip 4, so that the protrusions 101 and the limiting holes 401 match each other, to ensure that the moving track of the connecting strip 4 is more stable, then place the resistance to be coated in the accommodating groove 402 on the surface of the connecting strip 4, start the transmission wheel 1, the transmission wheel 1 rotates, the protrusions 101 on the surface of the transmission wheel 1 interact with the limiting holes 401 on the connecting strip 4, to drive the connecting strip 4 to move to the right on the upper end of the base 2, as the connecting strip 4 moves, the resistance in the accommodating groove 402 passes through the coating area in turn, to complete the leadless coating, in the moving process, the cooperation of the protrusions 101 and the limiting holes 401 makes the movement of the connecting strip 4 more stable and prevents deviation, to ensure the accuracy of coating, when the connecting strip 4 with the resistance enters the oven for heating, the connecting strip 4 and the base 2 will expand due to heat, as the slot gap exists between the base 2 and the cover 3, the connecting strip 4 is inside the slot gap, and after expansion, it can still move forward and will not be stuck due to expansion, when the base 2 expands due to heat, the limiting spring 206 plays a role. One end of the limiting spring 206 is fixed on the fixed point base 2 on the left side, and the other end is fixedly connected with the base 2 connected to the right end of the fixed point base 2, the limiting spring 206 firmly holds the expanded base 2, so that it will not deviate outward due to expansion, at the same time, limiting springs 206 are arranged at the front and rear ends of the base 2, to ensure that the front and rear ends are stressed uniformly during the expansion process, after heating is completed, the temperature decreases, the expansion phenomenon ends, and the initial state is restored, the limiting spring 206 is retracted, to ensure the stability of the base 2 during the expansion and contraction process.

Claims

1. A leadless coating structure for resistor production, comprising: Transmission wheel (1), the transmission wheel (1) is provided with base (2) above, the base (2) upper end is fixedly installed with cover (3), the base (2) and cover (3) between the movable installation of connecting strip (4), characterized in that: the middle part of the fixed connection between the base (2) and cover (3) forms a slot, and the slot is movably connected with the connecting strip (4), the connecting strip (4) is movably connected with the transmission wheel (1), the transmission wheel (1) surface is provided with a plurality of convex (101) at equal distance, the connecting strip (4) surface is provided with a plurality of limiting holes (401), the limiting hole (401) and convex (101) are matched, the limiting hole (401) between all are provided with accommodating groove (402).

2. The leadless coating structure for resistance production according to claim 1, characterized in that: The upper end of the base (2) is provided with a movable slot (201), the connecting strip (4) is accommodated in the movable slot (201) and movably connected therewith, the middle part of the left and right ends of the base (2) is provided with a connecting groove (202), the outer end face of the connecting groove (202) is fixedly installed with a connecting block (203) at the front and rear ends.

3. The leadless coating structure for resistance production according to claim 2, characterized in that: The connecting block (203) is L-shaped, the upper end of the connecting block (203) is embedded in the connecting groove (202) and connected, the front end of the inner wall of the connecting block (203) is attached to the front end of the base (2), and is threadedly connected with the front end of the base (2).

4. The leadless coating structure for resistance production according to claim 2, characterized in that: The surface of the base (2) is provided with a plurality of fixed grooves (204) at equal distance on the front and rear sides, the fixed grooves (204) are threadedly connected with fixed blocks (205).

5. The leadless coating structure for resistance production according to claim 2, characterized in that: The left side of the front and rear ends of the base (2) is fixedly installed with a limiting spring (206), the other end of the limiting spring (206) is fixedly connected with the right side of the base (2).

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