JP2016150813A - Vibration type feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To execute rust prevention measures for a leaf spring of a vibration type feeder at low cost.SOLUTION: A steel leaf springs 4 of a bowl feeder (vibration type feeder) is fitted to spring fitting surfaces 2a and 3a of an upper vibration body 2 and a lower vibration body 3 in a state where the plurality of leaf springs 4 are stacked to be held between inner and outer stainless-steel plate wall plates 7 larger than each leaf spring 4, and a U-shaped groove 12 formed around the leaf spring 4 by the peripheral edge parts of both wall plates 7 is filled with silicon rubber 13 to wrap each leaf spring 4 by the inner and outer wall plates 7 and the silicon rubber 13 without any gaps. Thus, even when a substance causing rust is included in air around the leaf spring 4, rusting of the leaf spring 4 can be surely prevented, and the cost of rust prevention measures can be reduced by reducing the material cost of a rustproof member wrapping the leaf spring 4.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vibratory feeder that vibrates a conveying member with an excitation mechanism and a leaf spring and conveys articles on the conveying path.

  In modern times, a wide variety of foods are produced in factories, but in the manufacturing process, food is being aligned and sorted while being conveyed using a vibratory feeder such as a bowl feeder or a straight feeder. There is.

  When food is being transported using a vibratory feeder as described above, in order to prevent food poisoning due to ingestion of the manufactured food, a vibratory feeder that is normally in direct contact with unpackaged food is used. Parts are frequently removed and cleaned and boiled. Further, for example, in Patent Document 1, by adopting a resin material as a material of a bowl (food supply upper plate) serving as a conveying member of a food supply bowl feeder, the bowl can be easily cleaned and disinfected. It has been proposed to be able to do so.

JP 2003-192122 A

  By the way, in the vibratory feeder used in the food manufacturing process as described above, it is necessary to keep not only the parts that directly contact the food but also the parts that do not touch the food clean. If there are rusted parts in the vibratory feeder that conveys articles using vibration, the rust fine powder may be scattered in the air due to vibration, and the rust fine powder in the air may be mixed into food in the manufacturing process Because there is. On the other hand, vibration feeders in food factories are easily rusted even for parts that do not touch food for the following reasons.

  FIGS. 6A and 6B show an example of a bowl feeder that uses a disk-shaped food (for example, biscuits) A as a food to be transported. In this bowl feeder, a bowl 51 as a conveying member having a spiral conveying path 51a formed on the inner surface is attached to the upper surface of the upper vibrating body 52, and an upper vibrating body 52 and a lower vibrating body 53 disposed below the upper vibrating body 52, Are connected by a plurality of inclined leaf springs 54 arranged at four positions at intervals of 90 degrees in the circumferential direction of the bowl 51, and an excitation mechanism (not shown) is provided between the upper vibrator 52 and the lower vibrator 53. Is. The lower vibrating body 53 is supported by a base 56 fixed on the floor via a plurality of vibration isolating rubbers 55, and each leaf spring 54 includes an upper vibrating body 52, a lower vibrating body 53 and an anti-vibration rubber 55. Through this, the bowl 51 and the base 56 are connected.

  As shown in FIGS. 7A and 7B and FIGS. 8A and 8B, each of the leaf springs 54 is tilted at the same angle with respect to the vertical plane, and the upper end portion thereof is vibrated upward. The lower end of the body 52 is attached to the lower vibrator 53. In the mounting method, spring mounting surfaces 52a and 53a having a fixed inclination angle are provided at the plate spring mounting positions of the upper vibrating body 52 and the lower vibrating body 53, and the leaf spring 54 and a pair of upper and lower intermediate portions are provided on the spring mounting surfaces 52a and 53a. In the state where the spacers 57 are alternately stacked and the washer 58 is stacked on the outermost leaf spring 54, bolts 59 penetrating the washer 58, the leaf spring 54, and the intermediate spacer 57 from the outside of the washer 58 are pre-springed. Screwed into the screw holes 52b and 53b provided in the mounting surfaces 52a and 53a.

  Although not shown, the excitation mechanism includes an alternating current electromagnet attached to the lower vibrating body 53 and a movable iron core attached to the upper vibrating body 52, and is intermittently acting between the electromagnet and the movable iron core. The upper vibration body 52 and the lower vibration body 53 connected by the leaf spring 54 are vibrated by a strong electromagnetic attraction force. As a result, the bowl 51 is torsionally vibrated around the central axis integrally with the upper vibrating body 52, and the food A introduced into the bottom of the bowl 51 enters the spiral conveyance path 51a as shown by an arrow in FIG. It is aligned while being conveyed along the line, and is supplied to the subsequent process in a row from the discharge end of the conveyance path 51a.

  Here, during operation of the bowl feeder, the food A on the bowl 51 is slightly cracked or chipped by the vibration of the bowl 51, so that the fine powder generated thereby floats in the air. Since the fine powder often contains salt and sugar, if it falls on the steel part of the bowl feeder, it will cause rust on the part.

  In this way, the vibratory feeder installed in the food factory is easily rusted, but among its components, the leaf springs made of spring steel (SUP material) with low corrosion resistance are used for salt and sugar. It is easy to generate rust in a situation where it is exposed to fine powder or splashes containing rust, and it is easy to disperse the rust fine powder into the air by vibration. Since it reduces the feeder supply capacity, it is the part that requires the most rust prevention measures and frequent maintenance.

  As a rust prevention measure for the leaf spring of the vibratory feeder, the leaf spring can be made of stainless steel for the spring, but the cost becomes high. Although a method of covering a portion other than the conveying member with a plate material having a rust prevention function such as a stainless steel plate is also conceivable, it is not general because the cost increases and maintenance becomes difficult.

  Then, this invention makes it a subject to enable it to implement the antirust measure of the leaf | plate spring of a vibration type feeder at low cost.

  In order to solve the above-described problems, the present invention connects a conveyance member and a base with a leaf spring, and the vibration member provided between the conveyance member and the base and the leaf spring provide the conveyance member. In the vibratory feeder that vibrates and conveys the article on the conveyance path, the plate spring is made of steel, and the steel plate spring is wrapped with a rust preventive member.

  According to said structure, even if the substance which causes rust is contained in the air around steel leaf springs, the leaf springs can be reliably prevented from rusting, and the leaf springs are wrapped. The cost of rust prevention measures can be reduced by using an inexpensive rust prevention member.

  For example, the rust prevention member can be made of a plate material having a rust prevention function and silicone rubber, and a stainless steel plate can be used for the plate material having the rust prevention function.

  Further, specifically, the plate material having the rust prevention function is composed of two wall plates sandwiching the plate spring in the thickness direction, and both the wall plates have dimensions of width and length as compared with the plate spring. The silicone rubber is formed in a U-shaped groove formed around the leaf spring by the circumferential edge portions of the both wall plates. Can be adopted.

  Here, the thinner the wall plates and the lower the rigidity of the silicone rubber, the smaller the influence on the vibration of the vibratory feeder.

  Further, it is desirable that spacers are inserted between the wall plates and the leaf springs so that the wall plates do not interfere with the leaf springs and do not affect the vibration of the vibratory feeder.

  Further, when a plurality of the leaf springs are arranged in a stacked state, it is desirable that the leaf springs are not rubbed by inserting an intermediate spacer between the leaf springs that are overlapped with each other. .

  As described above, the vibratory feeder according to the present invention is obtained by wrapping a steel leaf spring that connects the conveying member and the base with a rust prevention member. Moreover, it is possible to reduce the cost of rust prevention measures by using an inexpensive rust prevention member that wraps the leaf spring.

a is a plan view of the bowl feeder of the first embodiment, b is a front view of a a is a partially exploded plan view excluding the bowl of FIG. 1, b is a front view of a a is an enlarged plan view near the leaf spring mounting position in FIG. 2, b is a front view of the main part of a. a is an enlarged plan view near the leaf spring mounting position of the bowl feeder of the second embodiment, and b is a front view of a. Front view of the straight feeder of the third embodiment a is a plan view of a conventional bowl feeder, b is a front view of a a is a partially exploded plan view excluding the bowl of FIG. 6, b is a front view of a a is an enlarged plan view near the leaf spring mounting position of FIG. 7, b is a front view of the main part of a.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 3 show a first embodiment. The vibratory feeder according to the first embodiment is a bowl feeder that is installed in a food manufacturing process and uses a disk-shaped food (for example, biscuits) A as a food to be transported. This is the same as the conventional one shown in FIG.

  That is, as shown in FIGS. 1 (a) and 1 (b), the bowl feeder has a bowl 1 as a conveying member having a spiral conveying path 1a formed on the inner surface, attached to the upper surface of the upper vibrator 2. The upper vibrating body 2 and the lower vibrating body 3 disposed below the upper vibrating body 2 and the lower vibrating body 3 are connected to each other by four steel inclined leaf springs 4 arranged at 90 ° intervals in the circumferential direction of the bowl 1. A vibrating mechanism (not shown) is provided between the vibrating body 3 and the vibrating body 3. The lower vibrating body 3 is supported by a base 6 fixed on the floor via a plurality of vibration isolating rubbers 5, and each leaf spring 4 has the upper vibrating body 2, the lower vibrating body 3 and the vibration isolating rubber 5. Through this, the bowl 1 and the base 6 are connected.

  As shown in FIGS. 2 (a), 2 (b) and FIGS. 3 (a), 3 (b), the upper vibrator 2 and the lower vibrator 3 are springs having a fixed inclination angle at the respective leaf spring mounting positions. Mounting surfaces 2a and 3a are provided, and a plurality of leaf springs 4 stacked on top of each other are sandwiched between two wall plates 7 in the thickness direction, and the upper end portion is attached to the upper vibration body 2 as a spring. A lower end portion is attached to the surface 2 a and a spring attachment surface 3 a of the lower vibrating body 3. A pair of upper and lower spacers 8 are inserted between the leaf spring 4 and the wall plate 7, and a pair of upper and lower intermediate spacers 9 are inserted between the leaf springs 4. The spacer 8 and the intermediate spacer 9 have the same rectangular plate shape, and are each provided with a mounting hole (not shown) at the center. In addition, mounting holes (not shown) are formed in both end portions of each leaf spring 4 and each wall plate 7.

  Each leaf spring 4 is attached to the spring attachment surfaces 2 a and 3 a of the upper vibration body 2 and the lower vibration body 3 on the inner wall plate 7, the inner spacer 8, and between the plurality of leaf springs 4 and each leaf spring 4. The intermediate spacer 9, the outer spacer 8, and the outer wall plate 7 sandwiched between the two are sequentially stacked with their mounting holes aligned, and the washer 10 is stacked on the outer wall plate 7. A screw hole 2b in which bolts 11 penetrating through the mounting holes of the washer 10, the inner and outer wall plates 7, the inner and outer spacers 8, the leaf spring 4 and the intermediate spacer 9 from the outside of the spring 10 are provided in the spring mounting surfaces 2a and 3a in advance. 3b. 1 to 3, the illustration of the inner and outer spacers 8 and the intermediate spacer 9 is omitted (the same applies to the drawings of the second and third embodiments described later).

  Further, the inner and outer wall plates 7 are made of stainless steel plates and are larger in width and length than the respective leaf springs 4, and the respective leaf springs 4 with their respective peripheral portions protruding from the peripheral edges of the respective leaf springs 4. Is sandwiched. A silicone rubber 13 is packed in a U-shaped groove 12 formed around the leaf spring 4 by the peripheral edge portions of both wall plates 7.

  That is, each leaf spring 4 is encased without gaps between the inner and outer wall plates 7 and the silicone rubber 13 which are anticorrosive members, and generates rust even if it is formed of a steel plate such as spring steel (SUP material) having low corrosion resistance. It is installed in a state where there is no risk of causing it. At this time, since the silicone rubber 13 is packed in the U-shaped groove 12 formed around each leaf spring 4, the leaf spring 4 can be surrounded with an appropriate thickness, and the thickness can be easily adjusted.

  Here, the thinner each wall plate 7 and the lower the rigidity of the silicone rubber 13, the smaller the influence on the vibration of the bowl feeder and the lower the possibility of lowering the conveying capacity of the bowl feeder.

  And although illustration is abbreviate | omitted, the said vibration excitation mechanism consists of the alternating current electromagnet attached to the lower vibrating body 3, and the movable iron core attached to the upper vibrating body 2, and acts intermittently between the electromagnet and the movable iron core. The upper vibrating body 2 and the lower vibrating body 3 connected by the leaf spring 4 are vibrated by a simple electromagnetic attractive force. As a result, the bowl 1 is torsionally vibrated around the central axis thereof integrally with the upper vibrator 2, and the food A introduced into the bottom of the bowl 1 is moved into the spiral conveyance path 1a as shown by an arrow in FIG. They are aligned while being transported along the line, and are supplied to the subsequent process in a line from the discharge end of the transport path 1a.

  As described above, in this bowl feeder, the steel leaf spring 4 that connects the bowl 1 and the base 6 is made of the stainless steel plate inner and outer wall plates 7 and the silicone rubber 13 without any gaps. Since it is incorporated in a state of wrapping, even if fine powder containing salt and sugar caused by cracks or chipping of the food A being transported is suspended in the air, the leaf spring 4 and the surrounding air are blocked. The rusting of the leaf spring 4 can be reliably prevented. Therefore, the leaf spring 4 does not need to be frequently maintained because there is no fear that the rust is scattered in the air by vibration or the function as a spring is deteriorated due to corrosion.

  Moreover, the rust preventive member that wraps the leaf spring 4 is composed of the wall plate 7 formed of a small amount of stainless steel plate and the silicone rubber 13, and the material cost can be reduced. Therefore, the leaf spring is made of stainless steel for the spring. Compared to the method and the method of covering the portion other than the bowl of the bowl feeder with a stainless steel plate or the like, the cost of the rust prevention measures for the leaf spring can be reduced.

  The inner and outer wall plates 7 can be formed of a plate material having a rust prevention function other than the stainless steel plate, but the stainless steel plate as in the embodiment can sustain the rust prevention effect for a long time. preferable.

  Since the spacers 8 are inserted between the inner and outer wall plates 7 and the leaf springs 4, the wall plates 7 do not interfere with the leaf springs 4 and do not affect the vibration of the bowl feeder.

  Further, since the intermediate spacer 9 is inserted between the leaf springs 4 that are overlapped with each other, the leaf springs 4 are not rubbed against each other and are not prematurely worn.

  4 (a) and 4 (b) show a second embodiment. In this embodiment, the rust preventive member that wraps the leaf spring 4 of the first embodiment is formed only of the silicone rubber 13.

  That is, in the second embodiment, the inner and outer wall plates 7 of the first embodiment are eliminated, and the silicone rubber 13 not only surrounds each leaf spring 4 but also the back surface and the outermost leaf spring of the innermost leaf spring 4. By covering the surface of 4, each leaf spring 4 is wrapped without a gap. In this way, the thickness adjustment of the silicone rubber 13 is slightly difficult as compared with the first embodiment, but the rust prevention cost can be further reduced by the absence of the inner and outer stainless steel plate 7. .

  In each of the above-described embodiments, the case has been described in which the vibratory feeder to which the present invention is applied is a bowl feeder, but the present invention can also be applied to a linear feeder as described below.

  FIG. 5 shows a third embodiment. The vibratory feeder of this embodiment is configured such that a trough 15 as a conveying member having a linear conveying path 15a is attached to the upper surface of the upper vibrating body 16, and the upper vibrating body 16 and a lower vibrating body disposed below the upper vibrating body 16. 17 is a linear feeder in which a vibration mechanism is provided between the upper vibrating body 16 and the lower vibrating body 17. The lower vibrating body 17 is supported by a base 20 fixed on the floor via a plurality of vibration isolating rubbers 19, and each leaf spring 18 has the upper vibrating body 16, the lower vibrating body 17 and the vibration isolating rubber 19. The trough 15 and the base 20 are connected to each other.

  The configuration of the excitation mechanism, the method of attaching each leaf spring 18 and the configuration of the rust prevention member that wraps around each leaf spring 18 are the same as those in the first embodiment.

  That is, the excitation mechanism includes an AC electromagnet 21 attached to the lower vibrating body 17 and a movable iron core 22 attached to the upper vibrating body 16, and an intermittent electromagnetic acting between the electromagnet 21 and the movable iron core 22. The upper vibrating body 16 and the lower vibrating body 17 connected by the leaf spring 18 are reciprocally vibrated by the suction force. As a result, the trough 15 reciprocates integrally with the upper vibrating body 16, and the food A on the trough 15 is transported along the transport path 15a and supplied to the subsequent process from the discharge end of the transport path 15a. ing.

  The leaf springs 18 are attached to the spring attachment surfaces 16a and 17a of the upper vibrator 16 and the lower vibrator 17 on the inner wall plate 23, inner spacers (not shown), a plurality of leaf springs 18 and the like. An intermediate spacer (not shown) sandwiched between the leaf springs 18, an outer spacer (not shown), and an outer wall plate 23 are sequentially stacked, and a washer 24 is stacked on the outer wall plate 23. A bolt 25 penetrating each of the stacked members is screwed into screw holes 16b and 17b provided in advance on the spring mounting surfaces 16a and 17a.

  Each of the plates is filled with a silicone rubber 27 in a U-shaped groove 26 formed around the leaf spring 18 by a peripheral edge portion of the inner and outer wall plates 23 formed of a stainless steel plate larger than each leaf spring 18. The spring 18 is wrapped without a gap.

  Therefore, also in the linear feeder of the third embodiment, like the bowl feeder of the first embodiment, the plate springs 18 are wrapped with the inner and outer wall plates 23 and the silicone rubber 27 as rust prevention members, and the plate springs 18 are wrapped. Rusting can be reliably prevented, and the cost of the rust prevention measures for the leaf spring 18 can be reduced.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the meanings described above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  For example, in each embodiment, the vibration type feeder used in the food manufacturing process has been described. However, the present invention incorporates a steel leaf spring as a component for generating vibration, and the surrounding air is rusted. The present invention can be widely applied to a vibratory feeder used in an environment including a substance that causes generation.

1 bowl (conveying member)
1a Conveying path 2, 16 Upper vibration body 2a, 16a Spring mounting surface 2b, 16b Screw hole 3, 17 Lower vibration body 3a, 17a Spring mounting surface 3b, 17b Screw hole 4, 18 Leaf spring 5, 19 Anti-vibration rubber 6, 20 Base 7, 23 Wall plate 8 Spacer 9 Intermediate spacer 12, 26 U-shaped groove 13, 27 Silicone rubber 15 Trough (conveying member)
15a Conveyance path 21 AC electromagnet 22 Movable iron core A Food

Claims (6)

  The conveying member and the base are connected by a leaf spring, and the conveying member is vibrated by the vibration mechanism provided between the conveying member and the base and the leaf spring to convey the article on the conveying path. In the vibration type feeder, the plate spring is made of steel, and the plate spring made of steel is wrapped with a rust preventive member.   The vibratory feeder according to claim 1, wherein the rust preventive member comprises a plate material having a rust preventive function and silicone rubber.   The vibratory feeder according to claim 2, wherein the plate member having the antirust function is a stainless steel plate.   The plate material having the rust prevention function is composed of two wall plates sandwiching the plate spring in its thickness direction, and the both wall plates are formed with larger width and length dimensions than the plate springs. The leaf spring is sandwiched with the peripheral edge protruding from the peripheral edge of the leaf spring, and the silicone rubber is packed in the U-shaped groove formed around the leaf spring by the peripheral edge of the both wall plates. The vibratory feeder according to claim 2 or 3, characterized in that   The vibratory feeder according to claim 4, wherein a spacer is inserted between each of the wall plates and the leaf spring.   6. The vibratory feeder according to claim 1, wherein a plurality of the leaf springs are arranged in a stacked state, and an intermediate spacer is inserted between the stacked leaf springs.

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