Raw material circulating rolling device for processing chip PTC (Positive Temperature Coefficient) thermistors

Abstract

The utility model relates to the technical field of chip PTC (Positive Temperature Coefficient) thermistor processing, in particular to a raw material circulation rolling device for chip PTC thermistor processing, which comprises a rolling stock bin, side chucks are respectively arranged at the front end and the rear end of the inner side of the rolling stock bin, and the middle position of each side chuck is fixedly connected with a switching connecting shaft; a first sliding groove is formed in the lower portion of the side chuck, and an adjusting support is slidably connected to the inner side of the first sliding groove. According to the grinding block, the first sliding groove, the adjusting support, the grinding block body, the second sliding groove, the limiting top plate, the limiting guide rod, the spring and the telescopic rod are arranged; according to the raw material circulation rolling device capable of facilitating sheet type PTC thermistor machining, in the raw material machining process, gap adjustment operation can be conducted on the adjustable rolling structure, the device can conveniently conduct finer rolling machining operation on raw materials, and the limitation on efficient machining operation of the device due to the fact that the size of a rolling gap is fixed is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of chip PTC thermistor processing, in particular to a raw material circulation rolling device for chip PTC thermistor processing. Background Art

[0002] Chip PTC thermistors are generally made of BaTiO3 material with a small amount of rare earth elements added and sintered at high temperature. The raw materials are mainly special ceramic powders, including oxides, silicates, etc. At the same time, in order to make the raw materials as uniform as possible before mixing, a circulating rolling device is generally required to roll and refine the raw materials before mixing;

[0003] In the prior art, when a cyclic rolling device is used to roll and process the raw materials for making chip PTC thermistors, the cyclic rolling of the raw materials can generally be achieved by rotating the rolling blocks. However, considering that the particle size of the raw materials after refinement gradually decreases during the rolling process and the overall paving thickness decreases, the conventional rolling gap cannot be adjusted. The limitation caused by the rolling operation that can only meet one specification will be unfavorable for the device to perform more refined rolling processing operations on the raw materials. Therefore, in view of the above problems, a raw material cyclic rolling device for processing chip PTC thermistors is proposed. Summary of the invention

[0004] The purpose of the utility model is to provide a raw material circulating rolling device for processing chip PTC thermistors, so as to solve the problem proposed in the above background technology that when a circulating rolling device is used in the prior art to roll and process the raw materials for making chip PTC thermistors, the rolling gap is fixed, which makes it inconvenient for the device to perform more precise rolling processing operations on the raw materials.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A raw material circulation and crushing device for processing chip PTC thermistors comprises a crushing material bin, side chucks are respectively provided at the front and rear ends of the inner side of the crushing material bin, and a transfer shaft is fixedly connected to the middle position of the side chuck, a first slide groove is provided at the lower position of the side chuck, and an adjusting bracket is slidably connected to the inner side of the first slide groove, a crushing block body is fixedly connected to the bottom end position of the adjusting bracket, a front and rear group of the adjusting brackets are connected by a support plate, and a telescopic rod is provided at the top of the support plate, a second slide groove is provided at the upper position of the adjusting bracket, and a limiting top plate is fixedly connected to the inner upper position of the second slide groove, a limiting guide rod is slidably connected to the inner side of the limiting top plate, and a spring is provided on the lower outer sleeve of the limiting guide rod.

[0007] Preferably, side brackets are fixedly connected to the lower positions on both sides of the rolling silo, and a discharge port is connected to the bottom position of the rolling silo, and the discharge port is arranged between a group of the side brackets.

[0008] Preferably, the lower half of the rolling silo is arranged in an arc-shaped structure, and a feed hopper is connected to one side of the top of the rolling silo.

[0009] Preferably, the crushing bin and the transfer shaft are rotatably connected, and the transfer shaft and the side chuck are coaxially arranged, the front and rear groups of side chucks are connected by a central roller, the fixed end of the telescopic rod is connected to the central roller, and the diameter of the side chuck is larger than the diameter of the central roller.

[0010] Preferably, the adjustment bracket is distributed in a circular array structure along the center point of the side chuck, and the adjustment bracket is in a thin-at-top and thick-at-bottom structure. The limiting guide rod and the side chuck are fixedly connected. The limiting guide rod has an inverted "T"-shaped structure. The limiting guide rod extends into the interior of the second slide groove. The adjustment bracket is slidably connected through the second slide groove, the limiting top plate and the limiting guide rod. The upper and lower ends of the spring are respectively connected to one end of the limiting top plate and the horizontal end of the limiting guide rod. The telescopic rod is arranged between a front and rear group of the adjustment brackets.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the utility model, by setting the first slide groove, adjustment bracket, rolling block body, second slide groove, limiting top plate, limiting guide rod, spring and telescopic rod, it is convenient for the raw material circulation rolling device for processing the chip PTC thermistor to be able to improve the rolling effect of the device when it is working during the processing of the raw materials through the adjustable rolling structure composed of the first slide groove, adjustment bracket, rolling block body, second slide groove, limiting top plate, limiting guide rod, spring and telescopic rod to perform gap adjustment operation, so as to facilitate the device to carry out more refined rolling processing operations on the raw materials. At the same time, the setting of the adjustable gap of the rolling structure can also meet the requirements of the device to carry out processing operations with different degrees of rolling refinement, reduce the limitation of the fixed size of the rolling gap on the device to carry out efficient processing operations, and facilitate the utility model to solve the technical problems raised in the above background technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the central roller of the utility model;

[0015] Figure 3 This is a schematic diagram of the main structure of the rolling block of the utility model.

[0016] In the figure: 1. rolling silo; 2. side chuck; 3. transfer shaft; 4. first slide; 5. adjustment bracket; 6. rolling block body; 7. second slide; 8. limiting top plate; 9. limiting guide rod; 10. spring; 11. discharge port; 12. telescopic rod; 13. support plate; 14. center roller; 15. feed hopper; 16. side bracket. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-3 , the utility model provides a technical solution:

[0019] A raw material circulation and grinding device for processing chip PTC thermistors comprises a grinding silo 1, side chucks 2 are respectively provided at the front and rear ends of the inner side of the grinding silo 1, and a transfer shaft 3 is fixedly connected to the middle position of the side chuck 2, a first slide groove 4 is provided at the lower position of the side chuck 2, and an adjusting bracket 5 is slidably connected to the inner side of the first slide groove 4, a grinding block body 6 is fixedly connected to the bottom end position of the adjusting bracket 5, a front and rear set of adjusting brackets 5 are connected by a support plate 13, and a telescopic rod 12 is provided at the top of the support plate 13, a second slide groove 7 is provided at the upper position of the adjusting bracket 5, and a limiting top plate 8 is fixedly connected to the upper position of the inner side of the second slide groove 7, a limiting guide rod 9 is slidably connected to the inner side of the limiting top plate 8, and a spring 10 is provided on the lower outer sleeve of the limiting guide rod 9.

[0020] like Figure 1 As shown, side brackets 16 are fixedly connected to the lower positions of both sides of the rolling silo 1, and a discharge port 11 is connected to the bottom position of the rolling silo 1, and the discharge port 11 is arranged between a group of side brackets 16. When the raw materials are put into the rolling silo 1 for rolling processing, a group of side brackets 16 can stably support the rolling silo 1 to ensure that the raw materials are stably rolled; the lower half of the rolling silo 1 is arranged in an arc-shaped structure, and a feed hopper 15 is connected to one side of the top of the rolling silo 1. When the raw materials are rolled, the arc-shaped structure of the lower half of the rolling silo 1 can make the raw materials put into the silo and the rolling processing of the raw materials more centralized.

[0021] like Figure 1 , Figure 2 and Figure 3As shown, the rolling silo 1 and the transfer shaft 3 are rotatably connected, and the transfer shaft 3 and the side chuck 2 are coaxially arranged. The front and rear side chucks 2 are connected by a central roller 14, and the fixed end of the telescopic rod 12 is connected to the central roller 14. The diameter of the side chuck 2 is larger than the diameter of the central roller 14. When assembling the entire adjustable rolling structure, the central roller 14 will play a role in limiting the installation of the telescopic rod 12; the adjustment bracket 5 is distributed in a circular array structure along the center point of the side chuck 2, and the adjustment bracket 5 is arranged in a thin upper and thick lower structure, which limits the fixed connection between the guide rod 9 and the side chuck 2 The outer shape of the limiting guide rod 9 is an inverted "T"-shaped structure. The limiting guide rod 9 extends into the interior of the second slide groove 7. The adjusting bracket 5 is slidably connected through the second slide groove 7, the limiting top plate 8 and the limiting guide rod 9. The upper and lower ends of the spring 10 are respectively connected to one end of the limiting top plate 8 and the horizontal end of the limiting guide rod 9. The telescopic rod 12 is arranged between the front and rear groups of adjusting brackets 5. When the telescopic rod 12 carries the front and rear groups of adjusting brackets 5 to realize the outward telescopic action through the support plate 13, the sliding connection cooperation between the limiting top plate 8 and the limiting guide rod 9 will provide a guiding auxiliary effect on the telescopic adjustment operation of the adjusting bracket 5.

[0022] Working process: The electric energy required by the device of the utility model when starting operation comes from an external power supply, and the transfer shaft 3 extends to the outside of the silo and is connected to an external driving device. When the circulating rolling device is used to roll and process the raw materials for making chip PTC thermistors, first, with the discharge port 11 closed, the pre-primary crushed raw materials are put into the interior of the rolling silo 1 through the feed hopper 15, and then, under the auxiliary support of a group of side brackets 16, the external driving device will rotate with a group of side chucks 2 and the center roller 14 through the transfer shaft 3, so that the multiple rolling block bodies 6 can rotate in a rotating state. The raw materials are crushed in a cycle in sequence, and after a period of crushing, under the guiding and limiting action of the second slide 7, the limiting top plate 8, the limiting guide rod 9 and the spring 10, the whole device can respectively start the two sets of telescopic rods 12, so that it can carry the crushing block body 6 to achieve a short distance outward expansion and contraction through the support plate 13 and the adjustment bracket 5, so that the gap between the crushing block body 6 and the arc-shaped end of the crushing silo 1 can be adjusted, so that the whole device can further crush and refine the raw materials by adjusting and changing the crushing gap. Finally, after completing the fine crushing operation, the raw materials that have been crushed properly will be discharged outward through the inside of the discharge port 11.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A raw material circulation rolling device for processing chip PTC thermistors, comprising a rolling material bin (1), characterized in that: The front and rear ends of the inner side of the rolling silo (1) are respectively provided with side chucks (2), and the middle position of the side chuck (2) is fixedly connected to a transfer shaft (3), the lower position of the side chuck (2) is provided with a first slide groove (4), and the inner side of the first slide groove (4) is slidably connected to an adjustment bracket (5), the bottom end position of the adjustment bracket (5) is fixedly connected to a rolling block body (6), the front and rear groups of the adjustment brackets (5) are connected by a support plate (13), and the top of the support plate (13) is provided with a telescopic rod (12), the upper position of the adjustment bracket (5) is provided with a second slide groove (7), and the upper position of the inner side of the second slide groove (7) is fixedly connected to a limiting top plate (8), the inner side of the limiting top plate (8) is slidably connected to a limiting guide rod (9), and a spring (10) is sleeved on the lower outer side of the limiting guide rod (9).

2. The raw material circulation rolling device for processing chip PTC thermistors according to claim 1 is characterized in that: Side brackets (16) are fixedly connected to the lower positions on both sides of the rolling material bin (1), and a discharge port (11) is connected to the bottom position of the rolling material bin (1), and the discharge port (11) is arranged between a group of the side brackets (16).

3. The raw material circulation rolling device for processing chip PTC thermistors according to claim 1 is characterized in that: The lower half of the rolling material bin (1) is arranged in an arc-shaped structure, and a feeding hopper (15) is connected to one side of the top end of the rolling material bin (1).

4. The raw material circulation rolling device for processing chip PTC thermistors according to claim 1 is characterized in that: The rolling silo (1) and the transfer shaft (3) are rotatably connected, and the transfer shaft (3) and the side chuck (2) are coaxially arranged, the front and rear sets of the side chucks (2) are connected via a central roller (14), the fixed end of the telescopic rod (12) is connected to the central roller (14), and the diameter of the side chuck (2) is greater than the diameter of the central roller (14).

5. The raw material circulation rolling device for processing chip PTC thermistors according to claim 1, characterized in that: The adjustment bracket (5) is arranged in a circular array structure along the center point of the side chuck (2), and the adjustment bracket (5) is arranged in a thin upper and thick lower structure. The limiting guide rod (9) and the side chuck (2) are fixedly connected. The outer shape of the limiting guide rod (9) is an inverted "T"-shaped structure. The limiting guide rod (9) extends into the interior of the second slide groove (7). The adjustment bracket (5) is slidably connected through the second slide groove (7), the limiting top plate (8) and the limiting guide rod (9). The upper and lower ends of the spring (10) are respectively connected to one end of the limiting top plate (8) and the horizontal end of the limiting guide rod (9). The telescopic rod (12) is arranged between the front and rear groups of the adjustment brackets (5).

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