JPS63248468A - Surface treatment machine for dowel pin - Google Patents

Abstract

PURPOSE:To quickly perform the surface treatment of a dowel pin with a comparatively inexpensive device by crimping the dowel pin sent out with a part feeder by coating rollers stuck with a liquid adhesive to uniformly coat the adhesive thereon and then transferring it to a drying part with a conveyor. CONSTITUTION:Dowel pin A formed into a columnar shape are sent out at every pin with a parts feeder 14. A couple of coating rollers 11 which are brought into contact with each other and rotated in the biting direction and consist of soft material are provided to the outgoing end part of the feeder 14. Adhesive feeders 13 for supplying a liquid adhesive on the coating rollers 11 are provided. Further the starting end part of the carrying side of a conveyor 31 is arranged on the sending side of the coating rollers 11 and a dryer 30 is provided on the final end part of the carrying side of the conveyor 31. As a result, the surface treatment of the dowel pin can be performed with the comparatively inexpensive device.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a dowel surface treatment machine that coats the surface of a columnar dowel with a hardened adhesive.

(Prior Art) Generally, in order to firmly secure the dowel and the dowel hole, an adhesive is sprayed onto the dowel hole in advance and the dowel is driven into the dowel hole.

In this case, the means for spraying the adhesive onto the dowel holes is as follows:
The adhesion of the adhesive may become uneven, the adhesive may dry and adhere to the spray nozzle, and the amount of adhesive sprayed may change, resulting in variations in the adhesive performance between the dowels and the dowel holes, and even worse. There are problems such as the adhesive scattering or overflowing into the surrounding area and contaminating products and equipment.

In order to solve this problem, the present applicant separately provided a coated dowel whose surface was coated with a hardened adhesive, sprayed water on the dowel hole, and drove the coated dowel into the dowel hole. We have applied for a method of typing.

The object of the present invention is to provide a novel dowel surface treatment machine that can rapidly perform surface treatment of coated dowels, ie, dowels, which constitutes a predetermined step of the above method, using relatively inexpensive equipment.

(Means for Solving the Problems) In order to achieve the above object, the present invention is configured as follows.

That is, a pair of application rollers made of a soft material that contact each other and rotate in the biting direction are provided at the delivery end of a parts feeder that delivers dowels formed in a cylindrical shape one by one.
The applicator roller is provided with an adhesive supplying tool for supplying liquid adhesive, a conveyance side starting end of the conveyor is disposed on the delivery side of the applicator roller, and a drying device is provided at the conveyance end of the conveyor. be.

(Function) Since the present invention has the above structure, the dowel fed by the parts feeder is held between the application rollers to which the liquid adhesive is adhered, so that the adhesive is uniformly applied to the surface of the dowel. It will be coated with

Then, the adhesive-coated dowel sent out from the application roller is transferred to a drying section by a conveyor, and in this drying section, the adhesive attached to the surface of the dowel is dried and hardened.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

In the drawings, FIG. 1 is a front view of a surface treatment machine showing an embodiment of the present invention, FIGS. 2 and 3 are a side view and a plan view thereof, and FIG. 4 is an enlarged sectional view of main parts of the surface treatment machine. FIG. 5 is an enlarged sectional view of the main parts of the parts feeder section.

In FIG.
o and a drying device 3o.

The coating device 1o is as shown in FIG.

A pair of application rollers 11 that rotate in contact with each other are arranged opposite to each other on the left and right, and one of the application rollers 11 is connected to a driving motor 12.

Each of the application rollers 11 has an outer peripheral portion made of a water-absorbing sponge material.

A tray-shaped glue receiver 13 (adhesive supply tool) containing water-soluble and liquid adhesive (glue) (a) below each of the rollers 11
and apply the adhesive 11 to the lower part of each roller 11.
Soak in.

Note that lla is an auxiliary roller brought into contact with the outer side of each roller 11, and is used to remove excess adhesive (a) adhering to each roller 11.

Further, above each roller 11, a parts feeder 14 is arranged.

As shown in FIGS. 4 and 5, this parts feeder 14 includes an arrangement box 16 that is vibrated by a vibration motor 15.
are connected to the upper part of the frame 1 by a leaf spring 17, and six feeder hoses 18 directed directly above the contact portion of each roller 11 are connected in parallel to the discharge port 16a of this array box 16, and the feeder hoses 18 are An intermittent supply device 20 is attached in the middle.

As shown in FIG. 5, the intermittent supply device 2o is provided with a lower end of an upper side 18a of the feeder hose 18 and a lower end of a lower side 18 of the feeder hose 18 on the left side of the upper wall and the right side of the lower wall of the case 20a placed horizontally.
A movable valve 20b is connected to the upper end of the case 20a, and has a dowel passage 20c that vertically penetrates inside the case 20a.The movable valve 20b is slidably inserted in the left-right direction, and the movable valve 20b is connected to the cylinder mechanism 20e, and the case 20a is connected to A stopper pin 20d is fixed to the vertical center of the right wall of the case 20a so as to protrude leftward, and an air hose 2Of for discharging compressed air is connected to the right side of the upper wall of the case 20a.

As a result, if the movable valve 20b moves to the left in FIG. The dowel passage 20c communicates with the upper side 18a of the feeder hose 18, and the stopper pin 20d is fitted into the vertical middle part of the dowel passage 20c to stop the dowel (A) fed from the upper side 18a of the feeder hose 18. , only one piece is inserted into the upper part of the dowel passage 20c, and then the movable valve 20
When b moves to the right, the upper and lower parts of the dowel passage 20c communicate with the air hose 20f and the lower side 18b of the feeder hose 18, and the dowel (a) in the dowel passage 20c is moved by compressed air from the air hose 2Of. The liquid adhesive (B) is fed to the lower side 18b of the feeder hose 18, that is, the biting side of the upper part of the application roller 11, and the application roller 11 applies the liquid adhesive (B) to the outer periphery of the dowel (A). There is.

In addition, the drying device 30 described above has a wire belt type conveyor 31 extending from directly below the glue receiver 13 to the left in FIG. 33, and a blower 34 equipped with a heater is connected to the upper part of the wind tunnel 33.

Note that 35 is a storage box attached to the outlet 33a of the wind tunnel 33.

The conveyor 31 is moved by the motor 32 to its upper surface 3.
1a is rotated so as to move to the left in FIG.
The dowel (A) with
After the adhesive (A) is dried by being exposed to hot air discharged from the blower 34, a coated dowel coated with the hardened adhesive (A), that is, a surface-treated dowel is formed. (A) is discharged from the outlet 33a of the wind tunnel 33 and stored in the storage box 35.

(Effects of the Invention) As is clear from the above description, the present invention involves feeding dowels each having a cylindrical shape toward a coating roller by a parts feeder, and pinching the dowels with the coating roller to form a liquid. After applying the adhesive, the dowels are fed to a conveyor, and a drying device installed at the end of the conveyor cures the adhesive adhered to the surface of the dowels. drying can be carried out continuously using a device with a simple structure.

Therefore, the present invention has the advantage that the surface treatment of dowels can be quickly performed using relatively inexpensive equipment.

[Brief explanation of drawings]

Fig. 1 is a front view of a surface treatment machine showing an embodiment of the present invention, Figs. 2 and 3 are its side view and plan view, Fig. 4 is an enlarged sectional view of the main parts of the surface treatment machine, and Fig. 5 is an enlarged cross-sectional view of a main part of the parts feeder section. (A): Dowel, (B) Adhesive, 1: Frame. 10: Coating device, 11: Coating roller, 12: Motor, 1
3: Glue receiver (glue supply tool), 14: Parts feeder,
15: Vibration motor, 16: Array box, 16a: Discharge port, 1
7: Leaf spring, 18: Feeder hose, 18a: Upper side,
18b = Lower side, 20: Intermittent supply device, 20a: Case, 20b: Movable valve, 20c: Dowel passage, 20d: Stopper pin, 20e Niji cylinder mechanism, 20f air hose,
30: Drying device, 31: Conveyor, 32: Motor, 33
: Wind tunnel, 33a: Discharge port, 34: Blower, 35: Storage box. Application agent Hisashi Matsumoto

Claims (1)

[Claims] 1. A pair of application rollers made of a soft material that contact each other and rotate in the biting direction are installed at the delivery end of the parts feeder that delivers dowels formed in a cylindrical shape one by one, and a liquid adhesive is applied to the application rollers. A surface treatment machine for dowels, characterized in that an adhesive supply tool is provided for supplying an adhesive, a conveyance side start end of a conveyor is disposed on the delivery side of the application roller, and a drying device is provided at a conveyance end of the conveyor. .