JPS59197672A - Manufacturing method of seal member for bearing - Google Patents

Abstract

PURPOSE:To make a process for mass production attainable, by performing both molding processes for a mandrel and a seal member in the same stage of work in succession. CONSTITUTION:A beltlike metal plate 5 for mandrel use is fed onto a line, and after each center hole 6 of a seal member for bearing use is punched at a punching process A, synthetic rubber is applied to the mandrel metal plate 5 by a bonding agent coating roller at a bonding agent coating process B, then dried and passed through a baking apparatus 8. Next, with a hole 6 as a criterion, an elastic body 11 is fed through a feed passage at a seal part molding process C, and each of desired seal parts 11a and 11b are formed with an upper metal mold 10a and a lower metal mold 10b. At a punching process D1, the mandrel metal plate 5 is punshed into desired form with a punch 13, and finally a desired spot of the punched mandrel metal plate 5a is bent to some extent so that the seal member E for bearing use is completed at a bending process D2.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a manufacturing method that allows continuous mass production of bearing sealants.

Conventionally, as shown in Fig. 1, the method for manufacturing a bearing sealant is to place a reinforcing material core 6 in a lower mold 2 in a mold for molding a bearing sealant, and to supply synthetic rubber 4 on top of this. Then, after closing the upper mold 1, heat it for a certain period of time to vulcanize the rubber, and then close the upper mold 1.
, 2, and the pars were removed to obtain the desired bearing sealing material.

For this reason, the molding process of the core metal and the molding process of the sealant are made in separate processes, so there is a risk of defective products due to inserting the wrong core metal or forgetting to insert it.Furthermore, since each core metal is molded one by one, the mold Even if several pieces are lined up and molded at once, they cannot be molded continuously in large quantities, resulting in high costs, and there are also drawbacks such as a large amount of loss between processes.

The present invention eliminates these drawbacks and provides manufacturing capabilities for bearing sealing materials that enable continuous mass production.

When the present invention is explained based on the drawings, as shown in Fig. 2,
The 4σ manufacturing method of a bearing sealing material of the present invention is a manufacturing method that continuously obtains a bearing sealing material equivalent to the conventional one in one line via a j'f-shaped core metal plate 5, The drawing shows the process flowing from left to right. First, the strip-shaped metal plate 5 for core metal is supplied to the line Z, and the desired hole 6, such as the center hole of the bearing sealing material, is continuously drilled in the band-shaped metal plate 5 for core metal in step A. and: After applying an adhesive for adhering the synthetic rubber to the metal core plate 5 using an adhesive coating roller 7, for example, drying in an oven or the like, and putting it in a baking machine 8. An adhesive application step B in which the material is passed through, dried, and baked; an elastic body 11 made of synthetic rubber or synthetic resin is supplied with reference to the hole 6 provided in the metal core plate 5 coated with adhesive; Seal portion forming process C in which the seal portion is supplied through a passage 9, etc., and baked or shaped into a desired shape with an upper mold 10a and a lower mold 10b to form a desired sole portion 11a% 11'b as shown in FIG. and; seal portion 11a,
As shown in FIG. 4, the core metal plate 5 having the sole portions 11a and 11b formed thereon is punched out into a desired shape with a punch 1 and the firmness is also punched out at the same time. This is a method for manufacturing a bearing sealing material in which a bearing sealing material E having a desired shape is obtained by continuously combining the bending step D2 of bending the extracted core metal plate 5a at a desired location.

As described above, the manufacturing method of the present invention continuously combines the following steps for hole drilling through the core metal plate 5: step A1, adhesive application step B1, sealing portion molding step 01, punching and bending step DID2. The present invention is not limited to the method of action carried out within the same process. That is, in the adhesive application method, as shown in FIG. 2, the adhesive is supplied to the plate 14, and the adhesive is applied by passing it through the core metal plate 5 between the two rollers 7 to which the adhesive is transferred. In addition to this method, any known method such as coating by spraying, coating through a liquid bath, etc., which ensures reliable coating, may be used without limitation. In addition, the method of drying and baking the applied adhesive is as shown in the diagram in an oven, etc.
If the drying and baking are carried out using known methods such as using an infrared heater or high-frequency heater to pass through the 5θ air, or blowing hot air through the air, drying and baking can be done reliably. Any method may be used and there is no particular limitation. Furthermore, in the seal part molding process C in which the upper mold 10a and the lower mold 10b are used to mold the sole part, the elasticity of the synthetic rubber or synthetic resin 11 is shown in FIG. The supply method is not limited as long as a predetermined amount is supplied in a timely manner, such as by supplying the material into the mold through various material supply paths 9 or by supplying a fixed amount of pellets into the mold.

Further, the punching and bending steps DI and D2 are performed in the order of the punching step D1 and then the bending step D2, or the punching step D1 and the bending step D2 are performed simultaneously by attaching a device for bending to the punch 16. In this way, the desired bearing sealing material E is obtained through a series of steps, but it is automatically wound up and discarded at the final part of the belt-shaped metal core plate 5Ll- after being punched out. .

In addition, in the manufacturing process, drilling is called process A and adhesive autopsy.
Even if the order of steps B is reversed, the structure of the manufacturing method of the present invention will not be changed.

According to the manufacturing method of the bearing sealing material of the present invention as described above, since the manufacturing process is continuous, molding can be performed continuously without any loss between processes, and the core metal can be molded in the adhesive application process B. The heated metal plate 5 for core metal is heated and moved to the next molding step C, so when molding the sole portion 11'a% 111), the heated metal plate 5 for core metal is heated during vulcanization of synthetic combs, etc. Since the heat can be utilized, the vulcanization time can be greatly shortened. Also, punch 1G for punching in process A, process C
By replacing the lower mold, the punch for punching and the bending jig in steps D1 and D2, it is possible to easily continuously obtain a large amount of the desired bearing sealing material. At this time, material loss can be minimized by changing the feeding pitch of the core metal plate 5 in accordance with the size of the bearing sealing material.

In addition, 1. In order to increase the molding speed and improve productivity, the molding time of the molding process C is shortened, which means shortening the feeding time. To shorten the molding time, use synthetic rubber with a short vulcanization time and use the heat used for heating in the previous step, but since there is a limit to this, the molding mold for molding process C is used. A large number of reinforcing metal plates 5 are prepared, and these are moved together with the reinforcing metal plate 5 in order and continuously on a rotary set until molding is performed for a certain period of time. After the molding is completed, it is separated from the reinforcing metal plate 5 and rotated on the opposite side, and then moved to the molding position again. It is possible to significantly increase the speed by returning to the position before the τth step.Of course, in this case, the use of heat from the previous process is the same.

As shown in Fig. 6, in the process of continuously drilling holes in the metal plate 5 for the core metal, the center hole 6 for the sealing material for the bearing is formed.
At the same time as opening a, place it at a location where there is no problem in obtaining the bearing sealing material, preferably at a location close to both edges of the metal core plate 5,
If small holes 6b are punched at regular intervals in the same position as the center hole 6a and the next center hole 6a, the feed pitch will be accurate in the next process and the molding will be easier. The positioning during each process of punching, punching, and bending becomes accurate, and molding accuracy can be improved.

In addition, as shown in FIG. 7, in step A, continuous holes are made in the metal plate 5 for the core metal, and the central hole 6 for the bearing sealing material is
When opening a, a plurality of radial slits 15 are punched at the same time on the outer periphery of the seal at the location where it will be bent, so that it can be easily bent in the bending step D2 and the bearing can be easily bent as shown in FIG. The fitting force to the bearing can be controlled by bending the outer periphery of the sealing material E so that it does not lie on the same circumference, but instead makes the seal portion 11b uneven, that is, not on the same circumference. At the same time, the inconvenience caused by the expansion of air due to the rotational heat of the bearing can be avoided by letting the air escape at the four parts of the seal part 11b with a short diameter, and this adjustment can be easily controlled by the degree of the difference in bending dimensions. .

Furthermore, as shown in FIG. 8, the air can be controlled even more easily by providing an appropriate number of slits 15 extending further than the bending dimension so as not to reach the seal tgls11a provided in the center hole 6a. In this case, the same effect can be obtained even if the outer circumferential seal portion 11b is bent on the same circumference instead of being uneven.

As described above, according to the present invention, in the production of di+lt Ukegawa sealing material, a series of steps from the core metal to molding are performed continuously without cutting, so there is no loss between processes and there is no need to insert the core metal. This is an ideal manufacturing method that can prevent errors in inputting, as well as increase the molding time without any time loss.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a conventional method of manufacturing a bearing sealant. FIG. 2 is a manufacturing process diagram showing the method for manufacturing the bearing sealing material of the present invention. FIG. 3 is a sectional view of the molding step C of the present invention. FIG. 4 is a sectional view of the punching step D1 of the present invention. FIG. 5 is a sectional view of the bending step D2 of the present invention. FIG. 6 is a plan view of a metal plate for a core metal according to an embodiment of the present invention. FIG. 7 is a plan view of a metal plate for a core metal according to another embodiment of the present invention. FIG. 8 is a plan view of a bearing sealing material according to another embodiment of the present invention. A. - Hole I point is the process B ~ Adhesive application process C. Forming IJ, process Dl. Punching process D2. 4fi bending process E. Sealing material for bearing 5. Metal plate for core metal 6.. Hole 7--Adhesive application roller 8 Drying/baking device 10--Molding mold 11-
Bow” i-type body 16... Punch patent applicant Uchiyama Kogyo Co., Ltd.

Claims (3)

[Claims] (1) Continuously drilling desired holes in the strip-shaped metal plate for the core metal: After applying a bonding agent to the metal plate for the core metal, drying and baking, and applying IX adhesive. Using synthetic rubber or synthetic resin as a reference for the hole provided in the coated metal plate for the core metal, an elastic body of η is supplied, and the desired ++1 is applied using the upper and lower molds.
The step of forming the sole ff[l and the process of forming the sole ff [l] The metal plate for the core metal on which the stone sole part was formed is punched into the desired shape, and the desired portions are bent.
A method for manufacturing a bearing sealing material, which continuously combines the steps of obtaining a desired bearing sealing material. (2) In the process of continuously drilling holes in the metal plate for the core metal, in addition to drilling the center hole for the bearing sealant, the hole is also used for positioning at regular intervals at locations that will not hinder the punching of the bearing sealant. Claim 1, characterized in that a small hole is punched out.
A method for producing a sealing material for a bearing as described in . (3) In the process of continuously drilling holes in the metal plate for the core metal, in addition to drilling a center hole for the bearing sealant, multiple radial slits are simultaneously drilled at the outer periphery of the sole and at the bendable part. A method for manufacturing a bearing sealing material according to claim 1, wherein the bearing sealing material is extracted.