JP2003251055A - Feeding and polishing device for pachinko ball - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the polishing quality of a pachinko ball in a feeding and polishing device for feeding the pachinko ball while polishing the same by a guide member having a guide groove part and a feeding belt. <P>SOLUTION: The guide member 13 is provided with a tension roller 25 disposed on the front side of a central area of a range 13f supported by a spacer member 27, and pressed to be deformed by the pachinko ball B passing through the guide groove part 13b. In this case, the other guide groove parts are also deformed to cause uneven polishing for the pachinko ball. According to the invention, the back of the central area of a bridge part 13f, which is pressed by the pachinko ball to be increased in deformation amount at maximum, is elastically supported by a reinforcement spring 31 to decrease such influence. In the guide member, the range between the spacer members is separated at every guide part 13b to be independently advanced and retreated, whereby influence upon the other guide groove parts can be further lessened. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hoisting and polishing device for hoisting a pachinko ball received in a guide groove of a guide member while polishing it with a hoisting belt and a polishing cloth.

[0002]

2. Description of the Related Art As a conventionally known pachinko ball lifting and polishing apparatus (hereinafter, appropriately referred to as "conventional apparatus"),
There is one that adopts a cross-sectional configuration as shown in FIG.
This conventional apparatus includes a lifting tower main body 101 and a hinge 10 attached thereto.
The guide member 107, the lifting belt 109, and the like are built in an internal space surrounded by an opening / closing door 105 that is openably and closably mounted via the guide member 3. On the guide surface 107a of the guide member 107, a plurality of guide groove portions 107b, ... Which can guide the pachinko balls B are formed. The guide surface 107a is covered with a polishing cloth 111, but in the drawing, the guide groove 107 is pressed by the passage of the pachinko balls B.
It is in close contact with the surface of b. The lifting belt 109 is provided so as to face the guide surface 107a, and the pachinko ball passing through the guide groove portion 107b can be pressed by reducing the gap between the two. Since this pressing force may be insufficient due to the slack of the belt or the like, the tension state can be maintained by the tension roller 113 provided in the important part of the lifting tower body 101.

In this conventional device, the guide groove portions 107b, ...
The pachinko balls B sent to the machine are pressed by the lifting belt 109 against the polishing cloth 111 to be lifted while being polished. Further, among the plurality of guide groove portions 107b, ..., If there are those that have received the pachinko balls B and those that have not received them, the portion having the received guide groove portion and the portion having the not received guide groove portion In this area, the pressing force that the guide member 107 receives from the lifting belt 109 is unbalanced. When such imbalance of the pressing force occurs, it is proposed that the cushioning rubber material 115 absorbs an excessive pressing force by partially contracting, as shown in FIG. (See Japanese Patent Laid-Open No. 11-276709). further,
In this proposal, the guide member (guide groove portion) as described above is used.
However, when the pachinko balls are elastically deformed by the pressing force received from the lifting belt, the pachinko balls may not rotate on their own due to the excessively strong pressing force of the pachinko balls against the polishing cloth. In the above proposal, it is proposed to reduce the elastic deformation by configuring the guide member with a member having a large compression elastic coefficient in response to the occurrence of such a situation.

[0004]

However, the guide member 107 of the above-mentioned conventional apparatus is, as shown in FIG. 10, a portion (see FIG. 10) which receives an unbalanced pressing force from a pachinko ball. It can be seen that the right side of the figure sinks deeper than the unreceived part (left side of the figure) due to the contraction of the cushioning rubber material 115. Therefore, the guide member 107
The distance between the feeding belt 109 and the lifting belt 109 varies depending on the part, and the pressing force is imbalanced, which causes uneven polishing of the pachinko balls to be fed. In order to suppress such deformation of the guide member, increasing the plate thickness or elastic coefficient of the guide member is also an option that can be adopted, but there are restrictions on the material, space, etc. Often unsuitable for construction as a member.

Therefore, an object of the present invention is to provide a pachinko ball lifting and polishing apparatus having a structure that does not cause uneven polishing.

[0006]

A lifting and polishing apparatus to which the present invention is applied includes a lifting tower, an opening / closing door attached to the lifting tower, and a guide member attached to the inside of the opening / closing door. It is hung around the pulleys above and below the lifting tower,
A lifting belt is provided so that the outer surface on the rising side faces the guide surface of the guide member, and a tension roller that presses the lifting belt toward the guide member. A plurality of pachinko ball guide groove portions are provided in parallel on the guide surface of the guide member of the lifting and polishing apparatus, and the guide surface is covered with a polishing cloth. The pachinko balls that have been sent between the ascending side and the rising side can be lifted while polishing along the guide groove. In order to achieve the above-mentioned object, the present invention adopts the following means for this lifting and polishing apparatus so that the following operation and effects are produced.

(Structure of the Invention According to Claim 1) The guide member constituting the above-mentioned lifting and polishing apparatus is provided with a plurality of spacer members arranged at a predetermined interval in a direction orthogonal to the above-mentioned guide groove portion, thereby forming a back surface. It is supported inside the opening / closing door so that a space portion with a predetermined interval is formed on the side. The present invention is characterized in that this guide member is elastically supported by the reinforcing spring at the central portion between the spacer members on the back side thereof.

(Advantageous effects of the invention described in claim 1) As described above, the guide member is deformed so as to be retracted by the pressing force of the pachinko ball passing through the guide groove portion, but each portion depends on the presence or absence of the pachinko ball. This causes imbalance, which causes uneven polishing of the pachinko balls to be pumped. The invention described in claim 1 reduces the amount of deformation (retraction) by elastically supporting the back side of the guide member with the reinforcing spring at the central portion between the spacer members supporting the guide member, and is suitable for pachinko balls. It is designed so that a large pressing force can be applied. The amount of deformation of the guide member is maximum in the central portion, so that if this portion is supported by the reinforcing spring, it can be efficiently supported. In this way, by using the reinforcing spring to reduce the deformation of the guide member,
It is possible to reduce uneven polishing of pachinko balls.

(Characteristics of the invention described in claim 2) According to the invention described in claim 2, the above-mentioned guide member is formed on a land portion formed at a boundary between a plurality of guide groove portions formed in parallel, A feature is that a slit portion is provided at least in a range other than the supported portion supported by the spacer member, and a bridge portion that is deformable only in a limited range is configured for each guide groove portion. Here, the land portion means a portion that rises at the boundary between the groove portions formed on the guide surface of the guide member, and this width has a size necessary for providing the slit portion. Further, the portion (range) of the guide groove portion sandwiched by the slit portions becomes a bridge portion having the property of a beam fixed at both ends, and can be deformed independently of the portions on both sides adjacent to each other. By providing the slit portion in this way, only the specific bridge portion through which the pachinko balls pass is deformed, and the other bridge portions are not deformed, so that the guide member is not inclined. If the central portion of the bridge portion is elastically supported by a reinforcing spring so that the deformation amount of the bridge portion is reduced, the supporting capacity of the reinforcing spring as a whole can be reduced. It is possible to reduce the size of.

(Characteristics of the invention described in claim 3) According to the invention described in claim 3, the guide member described in claim 1 is provided with a plurality of guide pieces provided with one guide groove portion in parallel. It is configured by a plate-like member connected through a plurality of connecting members. The guide member is characterized in that it is supported by a plurality of spacer members which are orthogonal to the respective guide pieces and whose rear surface side is arranged at predetermined intervals. Thus, each guide piece constitutes a beam having the property of a continuous beam, and each guide piece constitutes a bridge portion which can be deformed only in a limited range between the spacer members. The bridge portion has the same function as the bridge portion described in claim 2 because it can be deformed independently, and the center portion on the back side is supported by the reinforcing spring.

(Characteristics of the invention described in claim 4) According to the invention described in claim 4, a reinforcing spring for elastically supporting the bridge portion described in claim 2 or 3 is a cantilevered leaf spring. The present invention is characterized in that the leaf spring is further provided with a plurality of spring contact pieces arranged so as to be supported by each bridge portion of the guide member. Each bridge portion is individually deformed by a pachinko ball passing through the guide groove portion, and this deformation can be individually elastically supported by a spring contact piece. This prevents deformation of a specific bridge portion from affecting other bridge portions and realizes cost reduction of the reinforcing spring.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (Schematic Structure of Lifting and Polishing Apparatus) As shown in FIGS. 1 and 2, a lifting and polishing apparatus 1 according to the present invention.
Is composed of a base part 3 installed on the floor and a lifting tower 5 standing upright from this base part. The lifting tower 5 includes an opening / closing door 11 which is attached to the lifting tower main body 7 via hinges 9, ...
It can be locked with. The rising side of the guide member 13 and the lifting belt 15 is housed in an internal space formed by the lifting tower body 5 and the opening / closing door 11 (see FIGS. 6 and 7). The opening / closing door 11 is formed by processing a steel plate into a groove shape, is located at the upper part of the lifting tower and covers an unattached range of a polishing cloth, which will be described later, and an opening door 11a located below the upper door 11a. It includes a lower door 11b that covers the mounting range.

The lifting belt 15 is an endless belt wound around a lower pulley 17 and an upper pulley 19 provided above and below the lifting tower body 7, and is rotatable by a motor 21 as a drive source. The lifting belt 15 passes through the lifting tower 5 on the ascending side, is exposed to the outside of the tower on the return path (falling side), and then passes through the inside of the belt cover 23. It is desirable that the lifting belt 15 has sufficient elasticity to apply a pressing force to the pachinko balls on the lifting surface that comes into contact with the pachinko balls to be lifted. Further, the lifting belt 15 is provided so that the pachinko ball B passing through the guide groove portion 13b of the guide member can be pressed toward the bottom of this groove portion by the tension roller 25 (see FIGS. 6 and 7).

The guide member 13 is mounted inside the opening / closing door 11, and is usually made of a synthetic resin material which is relatively lightweight and easy to process. As such a synthetic resin material, for example, an ABS resin or a methacrylic resin is suitable, but a resin material other than these, for example, a hard thermoplastic resin or the like can also be used. Alternatively, it may be made of a metal having a high elastic coefficient. The feature of the present invention resides in that the structure of the guide member and the reinforcing spring that elastically supports the guide member from the back side are provided. Therefore, these combinations will be described separately in two embodiments.

(First Embodiment) Next, a first embodiment will be described with reference to FIGS. The guide surface 13a of the guide member 13 in this embodiment is provided with the plurality of guide groove portions 13b described above vertically and in parallel, but the boundary between the groove portions is a land portion 1 flush with the guide surface.
It is 3c. Slits 13g, ... Are provided at the center of each land 13c in the width direction. Each slit portion 13g is provided in a range other than the portion where the guide member 13 is supported, that is, in a range of each bridge portion 13f described later. It is desirable that both ends of each slit 13g be rounded to prevent cracks. Here, the portion of the guide member 13 supported by the spacer member 27 is referred to as a supported portion 13e, and the range other than these that is a beam is referred to as a bridge portion 13f.
When the pachinko ball B fed into the guide groove portion 13b passes over the bridge portion 13f, the bridge portion is deformed rearward, but this displacement is absorbed by the space portion 28 described later (FIG. 6). , 7).

The back side of the guide member 13 is the guide groove portion 1.
It is supported at a predetermined interval by spacer members 27, ... Which are arranged inside the lower door so as to be orthogonal to 3b. Also,
A space 28 is defined between the inner side of the lower door 11b and the back side of the bridge 13f due to the presence of the spacer member 27 (see FIGS. 6 and 7). Spacer member 2
, ... are attached inside the opening / closing door (lower door) 11b having a function as a guide support (see FIG. 2),
The front side (right side in FIG. 6) supports the guide member 13. As described above, the interval (upper and lower distance) between the spacer members 27, ...
Corresponds to f. It is desirable that the length of the bridge portion 13f be set so as to ensure the necessary and sufficient bending to achieve the object of the present invention. The guide surface 13a of the guide member is covered with a polishing cloth 29. This polishing cloth is in close contact with the front surface of the guide surface including the bottom surface of the groove portion when the pachinko balls B pass along the guide groove portion 13b. ing.

The central portion on the back side of the bridge portion 13f is elastically supported at one end by a reinforcing spring 31 fixed to the lower door 11b. The reinforcing spring 31 is for reinforcing the deformation resistance strength of the guide member 13, reduces the amount of deformation (retraction) of the bridge portion due to the pressing of the pachinko balls B passing through the guide groove portions 13b, and is suitable for pachinko balls. It acts to apply a large pressing force. Therefore, the installation position of the reinforcing spring 31 is the position where the bending moment is maximum, and in combination with the installation of the tension roller 25, on the back side of the central part of the bridge part where the deformation amount is the largest,
The support portions 31b are in contact with each other so that they can be elastically supported.

The structure of the reinforcing spring is not particularly limited, but various leaf springs as shown in FIG. 5 can be adopted. Both (a) and (b) of the figure show cantilever type leaf springs, but as shown in (c) of the figure, both of them are attached to the lower door 11b (see FIGS. 6 and 7). The inner surface of the bridge portion 13f can be elastically supported by the support portion 31b. The reinforcing spring 131 shown in FIG.
While a large number of bridge portions can be supported over the entire width, the reinforcing spring 231 in FIG.
A plurality of spring contact pieces 31d, ... Are provided on one side, and each bridge portion can be supported by each of these contact pieces. The former is easy to manufacture and assemble, but has a disadvantage that it is affected by the number of pachinko balls passing through because of its relatively small supporting force. These reinforcing springs 131 and 231 fix the mounting portion 31a to the inside of the lower door 11b so that the support portion 31b is in contact with the central portion rear surface side of the bridge portion 13f of the guide member, as shown in FIG. It is attached to.

Further, FIG. 5 (d) shows an example in which a leaf spring having the properties of both ends supporting beams is adopted as the reinforcing spring. That is, the reinforcing spring 331 has the mounting portion 331.
A plurality of spring contact pieces 331d are provided on one side of a. In this reinforcing spring 331, the portion at the top of the center mountain of each spring contact piece 331d extending from the mounting portion 331a is used as a support portion 331b, and the tip portion extending beyond that is bent so as to be lowered again. Form the tip support 331c
There is. When the support portion 331b is pushed back and the reinforcing spring 331 is retracted, the tip support portion 331c is moved to the lower door 11b.
It is easy to deform by causing slippage on the inner surface of the. Also,
This reinforcing spring is the same as the reinforcing spring 331 shown in FIG.
You may make it attach in the state opposite to the same figure (e). That is, the mounting portion 431a is replaced with the bridge portion 13f.
The support portion 431b is elastically contacted with the inside of the lower door 11b, and the tip support portion 431c is provided so as to contact the back surface of the bridge portion. When mounted in this way, the bridge portion 13f retracts due to the passage of the pachinko balls, the reinforcing spring 431 correspondingly deforms, and a sliding phenomenon occurs between the tip support portion 431c and the back surface of the bridge portion. And the combination with plastic,
Wear between the two can be suppressed.

6 and 7 show a state in which the pachinko balls B are being fed along the guide member 13 described above. The range of the bridge portion 13f between the spacer members 27, 27 fixed to the inside of the lower door 11b corresponds to this,
It has the property of a continuous beam. The guide surface 13a is covered with a polishing cloth 29, and the rising side of the lifting belt 15 is located at a position facing the guide surface 13a with a predetermined interval. Tension rollers 25, 25 are arranged on the rear side (right side in FIG. 6) of the lifting belt 15 so as to press the rising side of the lifting belt toward the guide surface 13a. When the pachinko balls B being pumped pass through the positions, the tension roller 25 exerts a pressing force on these pachinko balls and deforms them so as to retract the guide groove portion of the guide member. However, this deformation, in combination with this pressing force, the bending of each bridge portion 13f, and the repulsive force of the reinforcing spring, makes it possible to realize high-efficiency polishing by applying a sufficient pressing force to the pachinko balls.

As described above, even if the pressing force due to the passage of the pachinko balls acts on the bridge portion 13f and deforms it so as to retract it, the amount of deformation is reduced by the reinforcing spring 31 and it is sufficient for the pachinko balls B. It is possible to exert a large pressing force. However, such deformation is caused by the reinforcement spring 3
Due to the involvement of 1, the aspect is different. FIG. 4A shows a state of being deformed by a pachinko ball B when the one having a plurality of spring contact pieces shown in FIG. 5B or FIG. 5D is adopted. In this case, only the bridge portion 13f and the spring contact piece 31d are deformed, and the others are not deformed, so that the pachinko balls passing through the other bridge portions are not affected.

On the other hand, FIG. 4 (b) shows a state in which the one-plate reinforcing spring 131 shown in FIG. 5 (a) is adopted, and the bridge pressed by the passage of the pachinko balls B is shown. By the deformation of the portion 13f, the support portion 31b is also entirely deformed. Therefore, when a pachinko ball enters another bridge portion, that bridge portion is not in contact with the support portion 31b of the reinforcing spring, and thus is easily deformed. This is because each of the bridge portions 13f influences each other though it is slight, and thus it is undeniable that the polishing quality of the pachinko balls becomes insufficient though it is also slight. However, it can be said that this reinforcing spring is advantageous in terms of cost because the manufacturing cost of the spring itself and the assembling thereof are easy. Note that FIG. 4C shows the supported portion 13e of the guide member.
Is shown, and this portion is not deformed by the spacer member 27.

(Second Embodiment) In this embodiment, as shown in FIG. 8, the guide member 73 is replaced by a plurality of guide pieces 7.
Are arranged side by side and are connected in a plate shape via connecting members 79, 79. Each guide piece 75 is provided with one guide groove portion 75a for guiding the pachinko balls B, and adjacent guide pieces 7 are provided.
The outer side portions of the members 5 and 75 are opposed to each other, and the guide pieces are independently movable between the connecting members. Connecting member 7
9 is inserted into each guide piece 75 at the lower door 11b (see FIG. 2).
The bridge portion 75f similar to that of the first embodiment is configured by matching the spacer member 77 provided inside (see).

The connecting member 79 is composed of a metal screw rod 79a provided with a threaded portion within a predetermined length range from both ends, and nuts 79b and 79b screwed to the male threaded portion. This screw rod 79a is inserted into a lateral hole provided so as to be orthogonal to the longitudinal direction of the plurality of guide pieces 75, and nuts 79b are screwed at both ends to be assembled into a plate shape. The degree of coupling between the guide pieces 75, 75 can be adjusted by tightening the nuts. In addition, each guide piece 75 has a collar 7 that is inserted into the screw rod 79a between the guide pieces.
By providing a predetermined gap with 9c, ...
Since the side parts do not come into contact with each other, it is easy to move back and forth independently of each other. The guide member 73 is provided on the rear side of the range where the guide member 73 is connected by the connecting member 79.
If it is installed inside the b so as to be supported by the spacer member 77, the configuration is similar to that of the first embodiment, and the pachinko balls B can be pumped by covering the guide surface with a polishing cloth (not shown). Becomes The configurations and functions of the lifting belt and the tension roller are the same as those in the first embodiment.

Also in this embodiment, a reinforcing spring 81 made of a leaf spring is provided behind the central portion of the bridge portion 75f of the guide member 73, as in the above-described first embodiment. The supporting portion 81b of the reinforcing spring is in contact with the back surface of each guide piece 75 so as to elastically support the same. As described above, there are various reinforcing springs, but here, as shown in FIG. 9A, a single plate leaf spring (see FIG. 5A) is used. Other than this, as a reinforcing spring, FIG.
As shown in FIG. 5B, it is possible to employ a guide piece having a plurality of contact pieces provided at intervals according to the pitch of the guide pieces 75 (see FIGS. 5B and 5D). . In addition, the shape and attachment of the reinforcing spring are the same as those of the first embodiment.

As described above, the present invention has been described based on the configuration of the lifting and polishing apparatus shown in FIGS. 1 and 2, but the present invention is limited to such a lifting and polishing apparatus. Instead, it can be applied to all lifting and polishing devices equipped with a guide member and a lifting belt. Further, although all the configurations of the reinforcing springs are described as leaf springs, other elastic bodies such as coil springs or torsion coil springs can be adopted in addition to the leaf springs.

[0027]

According to the present invention, first, since the portion of the guide member that is deformed by the pressing force of the pachinko ball is supported by the reinforcing spring, the amount of deformation of the guide member can be reduced. Becomes Secondly, by providing the guide member with the slit portion, each of the guide groove portions can be independently deformed, and only the guide groove portion through which the pachinko balls pass is deformed and elastically supported by the reinforcing spring. Since it does not affect the other guide groove portions, the pachinko balls can be lifted in a good state by the guide groove portions which are independent of each other. Thirdly, if the guide member is formed by connecting a plurality of guide pieces with a connecting member, the independence of each guide groove piece is strengthened, and in the case where partial damage is caused, the guide piece It can be repaired by exchanging one piece, which facilitates maintenance. Fourthly, if each of the bridge portions divided by the slit portion or the gap is supported by the spring contact piece of the reinforcing spring, it is possible to elastically support each of the guide groove portions through which the pachinko balls pass. Inconveniences such as uneven polishing of pachinko balls due to partial deformation can be further avoided.

[Brief description of drawings]

FIG. 1 shows the entire external configuration of a lifting and polishing apparatus applied to the present invention, in which (a) is a front view and (b) is a side view.

FIG. 2 is a front view showing a state in which an opening / closing door of the lifting and polishing apparatus to which the present invention is applied is opened.

FIG. 3 is a front view showing a guide member of the first embodiment example.

FIG. 4 is a view showing a deformed state of the guide member,
3A is a cross-sectional view taken along the line C-C of FIG. 3 (when a leaf spring having a plurality of spring contact pieces is attached), and FIG.
Sectional view of line C (when a single plate leaf spring is attached), (c) Sectional view of line D-D.

5A and 5B show an example of the structure of a reinforcing spring, FIG. 5A is a front view of a leaf spring formed of a single leaf spring, FIG. 5B is a front view of a leaf spring having a plurality of spring contact pieces, and FIG. c) is a cross-sectional view showing a state in which a cantilever type leaf spring is attached, and FIG. 7D is a front view of a both-end supporting beam spring having a plurality of spring contact pieces.
(E) is sectional drawing which shows the state which attached the reinforcement spring shown in the same figure (d), (f) is sectional drawing which shows the other attachment state of the reinforcement spring shown in the same figure (d).

FIG. 6 is an enlarged cross-sectional view showing a state in which pachinko balls are being lifted by a guide member and a lifting belt.

FIG. 7 is an enlarged sectional view taken along the line 6F-F of FIG.

FIG. 8 is a front view showing a guide member according to a second embodiment.

FIG. 9 is a cross-sectional view taken along line HH of FIG. 8, where (a) shows a case where a reinforcing spring composed of a single leaf spring is adopted, and (b) shows a case where a reinforcing spring having a plurality of contact pieces is adopted. Show.

FIG. 10 is a cross-sectional view showing an internal configuration of a conventional device.

[Explanation of symbols]

1 Lifting polishing device 5 Lifting tower 7 Lifting body 11 (11b) Open / close door 13,73 Guide member 13a, 73a guide surface 13b, 75a guide groove 13c Land section 13e Supported part 13f, 75f bridge section 13g slit part 15 Lifting belt 17,19 pulley 25 tension roller 27,77 Spacer member 28 Space Department 29 polishing cloth 31,81 Reinforcement spring 31d, 331d contact piece 75 Guide piece 79 Connection member B Pachinko ball

Claims (4)

[Claims] 1. A lifting tower, an opening / closing door attached to the lifting tower, a guide member attached to the inside of the opening / closing door, and pulleys provided above and below the lifting tower. , A lifting belt provided so that the outer surface on the rising side faces the guide surface of the guide member, and a tension roller that presses the lifting belt toward the guide member, the guide member being on the guide surface. A plurality of pachinko ball guide groove parts are provided in parallel, this guide surface is covered with a polishing cloth, while polishing the pachinko balls sent between this polishing cloth and the lifting side of the lifting belt. In the lifting and polishing apparatus for lifting along the guide groove portion, the guide member has a space portion at a predetermined interval formed by a plurality of spacer members whose back side is arranged at a predetermined interval in a direction orthogonal to the guide groove portion. With certain supported inside said door to so that, pumped polishing apparatus characterized by are elastically supported by the central portion of the reinforcing spring between said spacer member at the rear side. 2. The guide member according to claim 1,
A bridge that is deformable only in a limited range for each guide groove by providing a slit in the land formed between the guide grooves at least in a range other than the supported part supported by the spacer member. And a center portion of the bridge portion is elastically supported by a reinforcing spring. 3. The guide member according to claim 1, wherein the guide member is
A plurality of guide pieces provided with one guide groove portion are arranged side by side and connected in a plate shape via a plurality of connecting members. A lifting and polishing apparatus, characterized in that it is supported by a spacer member to form a bridge portion that is deformable only within a limited range for each guide piece. 4. The reinforcing spring according to claim 2 or 3, wherein the reinforcing spring is a cantilever leaf spring, and a plurality of spring contact pieces are provided so as to be supported by each of the bridge portions. A lifting and polishing apparatus characterized by the above.