KR20020086818A - Forging formed device of both direction - Google Patents

Abstract

PURPOSE: A two-directional forging/molding apparatus is provided to produce two products at one time of right/left reciprocating process by two returning tables with simple and low power loss type structures and to improve a constant supply of products and productivity thereof. CONSTITUTION: The apparatus comprises generally known components such as two returning tables(120, 120a); metallic holders(130, 130a); and right/left die-holders(140, 140a) with dies(141). Additionally, the apparatus includes cutting knives(160, 160a) to alternately supply raw material(210) to the dies; standing pins to support or push the material; a pair of rods(173, 174) driven by cams(171, 172) of longitudinal shafts(170, 170a); and pin rests(177) mounted on a main body(100). The apparatus is characterized of a bevel gear(112) at one end of a main shaft(110), both of side bevel gears(163, 163a) and a pair of cam wheels(164, 165) driven by the same to push and work the knives(160, 160a) and pliers(161, 161a).

Description

Forging formed device of both direction}

The present invention relates to a bidirectional forging molding apparatus for producing a product by hitting each time the carriage moves left / right by installing a blow mold on both sides of the carriage, more specifically, the operation of both wire cutting knife and tongs The structure of power transmission is designed to be simple without loss of power to increase the manufacturability, and the support pin end of the primary molded material is changed when the positions of both die holders are changed while the cut material can be moved more securely by tongs. The present invention relates to a bidirectional forging molding apparatus capable of forming a more uniform product by preventing easy wear or breakage.

In general, the forging molding apparatus that blows in one direction among the forging molding apparatuses that blow and fasten parts such as rivats, bolts, screws, and electronic parts such as lighter nozzles and reel shafts in two processes is a blow installed on one side of the carriage. The first blow mold and the second blow mold are installed above and below the mold holder to alternately blow the material supplied to the die to form one product.

At this time, the means for causing the first and second blow molds to be alternately blown may cause the blow mold holder to move up and down at the tip of the carriage, or the die may be lifted from the main body while the blow mold holder remains intact. . By the way, such a one-way forging molding apparatus is a productivity is significantly reduced because one product is completed only when the carriage is operated twice.

Further, in order to double the productivity, the blow mold holder may be provided with a first blow mold in the center, a second blow mold may be installed in the upper and lower parts thereof, and a die may be installed at the upper and lower die holders. This is because the two steps are performed at the same time each time the carriage is operated, one product is completed, thereby increasing the productivity twice. However, as described above, there is a limit to increase the productivity by the one-way forging molding apparatus in which the blow mold and the die are installed only on one side of the carriage.

Accordingly, the present applicant installs a blow mold holder with a primary mold installed at the center and a secondary mold installed at the top and bottom thereof on each side of the carriage. After the installation of each shuttle, the two-way forging molding device was developed to complete two products, one for each die, and was registered as Invention Patent No. 64547 (Notification No. 93-4506). This is four times more productive than the conventional one-way forging apparatus.

By the way, the above-mentioned bi-directional forging molding apparatus of the invention is to change the rotary motion of the driven shaft to the linear motion of the slide cam plate by the cam rod in order to operate the cutting knife and the forceps so that the linear motion of the cutting knife or forceps again It has a lot of power loss, complicated construction, and high production cost, and when the material cut by the cutting knife is caught by the tongs, it is cut as it is. Therefore, when the tongs feed the material to the die holder, the material is placed on the side edge of the die holder. It tends to be poorly fed, such as jamming.

In particular, when the material supplied to the die is first blown, the material is pushed into the molding hole, and the support pin inside the die holder is pushed by the material to move backwards. In many cases, the pin hole formed on the wall of the main body is caught, and when the die holder is lifted and operated in this state, the rear end of the support pin is bumped and is easily cut while being worn and the end of the support pin gradually progresses.

In this way, if the backing pin is badly worn, the supporting pin of the backing pin becomes gradually shorter when the supplied material is first blown, so the material flowing into the molding hole is longer, and the body is formed longer. The outside part becomes smaller, so the head part is gradually formed smaller.

Therefore, the precision and uniformity of the product to be molded gradually decreases with time, the quality is seriously degraded, and when the back of the support pin is severely cut or worn, the impact is severe when the support pin is cut and broken Occurred frequently, the molding work had to be stopped to repair it, and manpower was required to repair it.

Therefore, the present invention was developed to solve the problems of the conventional bi-directional forging molding apparatus as described above, the object of the present invention is to provide a power transmission configuration for the cutting knife operation of the steel wire to a simple yet without power loss structure To reduce the production cost, to ensure that the tongs to move the cut material more reliably to ensure high quality material strike, and the support pin end that supports the primary molded product when the position of both die holders are changed It is to provide a bidirectional forging molding apparatus that can improve the supply and productivity of a more uniform product by not easily worn or broken.

1 is a perspective view showing an example of a forging apparatus according to the present invention as an example

Figure 2 is a plan view schematically showing the forging molding apparatus of the present invention

Figure 3 is a perspective view showing a state in which the auxiliary shaft and the cam wheels are installed in the present invention

Figure 4 is a perspective view illustrating a state between the auxiliary rod and the auxiliary link and the auxiliary pin rod between the upper and lower rods and the link in the present invention;

5a to 5f are schematic diagrams illustrating the process by which the present invention operates

Figure 6 is a perspective view showing a state of operating the ratchet gear with a link for the wire bend of the present invention

Explanation of symbols for main parts of the drawings

110: main shaft 111: crankshaft

162,162a: minor axis 164,165: camwheel

120,120a: carriage 130,130a: mold holder

131: 1st blow mold 132,133: 2nd blow mold

140,140a: die holder 160,160a: cutting knife

171,172 Cam 173,174 Load

175,176: Link 177,178: Pins

190: auxiliary pin bar 191: auxiliary link

192,193: Secondary rod 210: Material

Hereinafter, described in detail by the accompanying drawings the technical configuration and operation of a preferred embodiment that can effectively achieve the above object of the present invention.

Both carriages connected to each of the connecting rods 121 and 121a at left and right sides to receive the power of the crankshaft 111 in the center of the main shaft 110 in the configuration of the present invention represented in FIGS. 1 and 2. 120, 120a; A mold holder (130) (130a) installed at the tip of the carriage (120) (120a) and having a primary strike mold (131) installed at a center thereof and a secondary strike mold (132) (133) installed at upper and lower sides thereof; While lifting up and down by the link plate 152 connected to the cam rails 151 of the driven gear 150 on both sides of the machine body 100 in a state in which the mold holders 130 and 130a are opposed to each other. The configuration of the left and right die holders 140 and 140a on which the dies 141 and 142 are provided is the same as before.

And, cutting knife (160) (160a) and tongs (161, 161a) for cutting and supplying materials alternately to the upper and lower forming holes of the lifting die (141) (142); Support pins (144, 145) for supporting or pushing the material 210 is installed in the molding hole to enter; The support pins 144 and 145 are individually operated by a pair of rods 173 and 174 and links 175 and 176 operated by the cams 171 and 172 of the driven shafts 170 and 170a. The configuration of the pin stages 177 and 178 provided in the upper and lower pin holes of the machine body 100 so as to be able to make the same as the conventional forging molding apparatus.

Then, when the ratchet gears 182 and 182a are rotated by a predetermined angle by the iron wire bend links 180 and 180a and the control tool 181 and 181a intermittently operated as shown in FIG. The iron wires 200 and 200a on both sides enter the entrance hole by the transfer rollers 183 and 183a which are rotated together by the power, and the cutting knives 160 and 160a respectively cut the tongs 161 and 161a. The mold holders 130 and 130a of both carriages 120 and 120a are alternately supplied to the molding holes of the dies 141 and 141a each time the blow process is performed. It is like a forging molding machine.

A feature of the present invention is to install the bevel gear 112 at one end of the main shaft 110, the auxiliary shaft 162, 162a which is powered through both bevel gears 163, 163a meshed at right angles thereto. A pair of cam wheels 164 and 165 are installed on each of the two cutting knives 160 and 160a and the rear end of the tongs 161 and 161a, respectively. 3 is shown in the perspective view.

In such a configuration, the cam wheels 164 and 165 for operating the cutting knifes 160 and 160a and the tongs 161 and 161a are simply provided on the auxiliary shafts 162 and 162a. Compared to the installation by connecting the cam wheel and the like with a link, the operation of the cutting knife 160, 160a and the forceps 161, 161a is clear, but the assembly is easy to manufacture, thereby reducing the production cost and increasing the manufacturability.

In addition, since the rotational movement of the cam wheels 164 and 165 installed on the auxiliary shafts 162 and 162a is directly converted to the linear movement of the cutting blades 160 and 160a and the tongs 161 and 161a, the conventional rotation is performed. There is no power loss and the noise when driven is significantly reduced compared to the movement (cam wheel) → linear movement (cam plate) → linear movement (cutting knife, tongs).

In addition, the present invention, as shown in Figs. 2 and 3, when the left and right cutting knifes 160 and 160a slightly push and move the cut material 210, the pin hole is formed inside the circumferential wall at the position thereof. 168a are installed to be in and out respectively, and the pin posts 168 and 168a are operated by another camwheel 166 and 166a installed at the ends of the left and right auxiliary shafts 162 and 162a. When the tongs are to be moved in and out by the (167a) when the tongs are about to grab forward, characterized in that to push forward.

At this time, a portion for operating the pins 168 and 168a of the links 167 and 167a may have holes (not shown) to prevent the wires 200 and 200a entering at predetermined intervals by the transfer rollers 183 and 183a. 169, the wires 200 and 200a smoothly enter through the holes 169, and the links 167 and 167a pin 168 without interfering with the wires 200 and 200a entering. Only 168a is operated.

Both pin posts 168 and 168a are slightly forward by links 167 and 167a operated by cam wheels 166 and 166a when the respective cutting knives 160 and 160 cut and move the workpiece 210. Since the material 210 is slightly pushed forward while being pushed by the tongs 161 and 161a, the cut material 210 is caught with the tip slightly away from the circumferential wall, which causes the material to be caught by the tongs 161 and 161a. Is stable when it is moved to the molding hole of the dies 141 and 142, so that the hitting can be performed better than before, and the links 167 and 167a for operating the pin posts 168 and 168a are elastic such as springs. It is immediately returned to its original position by the means.

In addition, the present invention is the upper and lower pin bar installed in the machine main body 100 to operate the support pins (144, 145) installed in the molding hole of the die (141) 142 as shown in Figure 4 and 5 (177) (178) installs another auxiliary pin stand 190, and installs the auxiliary link (191) between the existing link 175, 176 for operating it, the existing link (175) At the end of the rods 173 and 174 which operate 176, the secondary rods 192 and 193 of short lengths operated together are installed so that the existing rods 173 and 174 are connected to the existing links 175 and 176. The auxiliary rods 192 and 193 alternately operate the auxiliary link 191 each time it operates.

The present invention configured as described above is installed in the upper and lower positions of the molding hole and the supporting pins 144 and 145 of the upper and lower dies 141 and 141a installed in the liftable die holders 140 and 140A by FIG. Looking at the position of the pins 177 and 178 and the auxiliary pins 190 are as follows.

That is, when the left die holder 140a is raised as shown in FIG. 5A, the supporting pins 144 and 145 of the upper and lower forming holes are positioned in front of the upper pin holder 177 and the intermediate auxiliary pin holder 190 and the right die holder ( When the 140 is lowered, the supporting pins 144 and 145 of the upper and lower molding balls are positioned in front of the intermediate auxiliary pin post 190 and the lower pin post 178.

Hereinafter, the process of molding the product according to the present invention as described above the left die holder 140a in the raised state, the right die holder 140 in the lowered state in the direction of the arrow (right direction) of FIG. 5A (crank shaft ( 111) will be described as being rotated.

5A, a new material 210 cut by the cutting knife 160 is supplied to the empty (no product) upper forming hole of the lower right die holder 140 as shown in FIG. 5A, and the first blown material of the lower forming hole. When the crankshaft 111 is completely moved in the right direction (arrow direction) in the state located in front of the lower pin rest 178, the right carriage 120 is advanced and hit as shown in FIG. 5B .

Then, the first primary striking mold 131 is blown while pushing the new material 210 into the upper molding hole to make the primary molding. At this time, the support pin 144 of the molding ball moves backward as the material 210 is pushed in. Therefore, the rear end touches the inner circumferential wall of the machine body 100, and the lower secondary strike mold 133 hits the material 210 in the lower forming hole to perform secondary molding.

Thereafter, the crank shaft 111 rotates in the left direction (arrow direction) as shown in FIG. 5C, and the material 210 in the lower molding hole of the right die holder 140 is instantaneously when the right carriage 120 falls from the die holder 140. (Secondary molding finished material) is a support hit by the pin 178 as shown in Figure 5c as the rod 174 operated by the cam 172 to push the lower link 176 to operate the pin 178. The pin 145 pushes the molded product and drops it out of the molding hole. When the rod 174 is operated, the short rod between the secondary rods 193 gently pushes the central auxiliary link 191.

Then, the auxiliary link 191 slightly pushes the central auxiliary pin stand 190, so that the central auxiliary pin stand 190 slightly forwards the support pin 144 whose rear end is in contact with the inner circumferential wall of the machine body 100. Due to this, the support pin 144 pushes forward the first molded material 210 of the molding ball slightly forward (at this time, the first molded material is slightly pulled forward) and is separated from the inner circumferential wall of the machine body 100. It will enter the molding hole completely.

And, at this time, the primary a material (210) strikes a new material 210 is cut by a knife (160a) cut as shown in the lower molded balls are also 5c of the left die holder (140a) that is raised is supplied to the top of the molded ball Since the left reciprocating band 120a performs a blow process in such a state, as shown in FIG. 5C, the primary strike mold 131 strikes the first molding by pushing the new material 210 into the lower molding hole, and then blows. The upper secondary strike mold 132 hits the material 210 of the upper molding hole to perform secondary molding.

In this state, as soon as the crankshaft 111 rotates to the right as shown in FIG. 5E and the left carriage 120a falls from the die holder 140a, the material 210 in the upper molding hole of the left die holder 140a (2) The vehicle-molded material) is a support pin 144 hit by the pin 177 as shown in FIG. 5E as the rod 173 operated by the cam 171 pushes the upper link 175 to operate the pin 177. ) Pushes the second molded finished material 210 of the left die holder 140a to the outside of the molding hole, and when the rod 173 is operated, a short length between the left auxiliary rods 192 is a central auxiliary. The link 191 is slightly pushed.

Then, the auxiliary link 191 slightly pushes the auxiliary pin stand 190 in the center, and thus the auxiliary pin stand 190 slightly forwards the support pin 145 whose rear end is in contact with the inner circumferential wall of the machine body 100. As a result, the support pin 145 is slightly pushed forward from the primary molding material 210 of the molding cavity to be completely separated from the inner circumferential wall of the machine main body 100 into the molding hole.

This state is a state in which one product is molded and separated from each of the upper and lower dies 141 and 142 of both die holders 140 and 140a while the crankshaft 111 rotates once, and at this time, both die holders ( 140 and 140a are operated by the link plate 152 connected to the cam rail 151 of the driven gear 150, and the left die holder 140a slides down from the inner circumferential wall of the machine body 100 as shown in FIG. 5F. On the contrary, the right die holder 140 slides upward from the inner circumferential wall of the machine body 100 so that their positions are changed.

By the way, the present invention supports both the primary molded material 210 as described above when both die holders 140 and 140a slide on the inner circumferential wall of the machine body 100 as described above. Since the supporting pins 144 and 145 are separated from the inner circumferential wall of the machine body 100 and enter into the molding hole, when the both die holders 140 and 140a are slid, the supporting pins 144 and 145 have a trailing edge. Since it does not touch the inner circumferential wall of the machine body 100 as in the prior art there is no fear of wear or damage at all.

Then, as shown in FIG. 5F, when the positions of both die holders 140 and 140a are changed, the new material 210 cut by the lower forming hole of the right die holder 140 is immediately supplied again, and the crankshaft continues in this state. When the 111 is completely rotated to the right, the center primary strike mold 131 of the right carriage 120 is first molded while pushing the new material 210 into the lower molding hole, and the secondary strike mold 132 above. The secondary molding by hitting the first molded material 210 of the upper.

This is the same as FIG. 5B before the positions of both die holders 140 and 140a are changed, and the subsequent steps are again performed in the process of FIG. 5F through the process of FIGS. 5C to 5E. As the position of 140a is changed, if the process is repeated continuously, each one of the die holders 140 and 140a is rotated each time the crankshaft 111 rotating together with the main shaft 110 is rotated once. Two products are produced.

As described above, the present invention installs a rotary cam on the auxiliary shaft engaged with the bevel gear and the bevel gear of the main shaft for power transmission for operating the cutting knife and the forceps so that the cutting knife and the forceps are operated by the rotary cam. Since it is to be converted directly to the linear motion of the cutting knife and the forceps in the rotational motion of the auxiliary shaft, there is no power loss, and noise is also reduced compared to the conventional rotational motion → linear motion → linear motion.

And, in the present invention, when the cutting knife cuts the material and moves the material by a certain distance, the pin bar of the pin joint formed on the machine body of the part pushes the material slightly by the link operated by the cam wheel at the end of the auxiliary shaft, Since the forceps are to grab the material in such a state, the process of grasping the material to move to the die hole of the die holder is more stable than the conventional, it is effective to perform a good blow.

In addition, the present invention is to lift the rear end of the support pin pushed by the primary molding material in the state away from the inner peripheral wall of the machine body when the position of both die holders are changed, so that the back end of the support pin is worn or damaged by impact as in the prior art. It is possible to mold a uniform product because there is no work to increase the quality, and the life of the support pin is long, so that the molding device does not have to be stopped in order to replace the support pin which is often broken as in the prior art.

Claims (2)

Left and right carriages 120 and 120a connected to reciprocate with the crankshaft 111 in the center of the main shaft 110; A mold holder (130) (130a) installed at the tip of the carriage (120) (120a) and having a secondary strike mold (132) (133) installed above and below the center of the primary strike mold (131); Die holders 140 and 140a that are lifted from both sides of the machine body 100 in a state opposite to the mold holders 130 and 130a and provided with dies 141 and 142 on top and bottom; Cutting knives 160 and 160a and tongs 161 and 161a which alternately cut and supply materials to the upper and lower forming holes of the dies 141 and 142; Support pins (144) (145) for supporting the material 210 in the molding hole; Pin posts 177 and 178 installed to individually operate the support pins 144 and 145 by a pair of cams 171, 172, rods 173, 174 and links 175, 176; By feed rollers 183 and 183a for intermittently rotating by the wire bend link 180, 180a, the control tool 181, 181a, and the ratchet gears 182, 182a, the material is supplied to the cutting knife. Whenever the molds of the mold holders 130 and 130a perform a blow process once left / right, a bidirectional forging molding apparatus in which each second molded product is dropped from each of the die holders 140 and 140a is formed. In that, A bevel gear 112 is installed at one end of the main shaft 110, and both bevel gears 163 and 163a are engaged at right angles to both cutting blades 162 and 162a on the auxiliary shafts 162 and 162a. 160 (160a) and a pair of cam wheels (164, 164a) for pushing the rear end of the tongs (161, 161a) are installed, Behind the position where the die 141, 142 is supplied with new material, an auxiliary pin between the upper and lower pin bars 177, 178 and the links 175, 176 to operate the support pins 144, 145. After the installation of the 190 and the auxiliary link (191) by the short rod between the secondary rods (192, 193) of the short length is integrally installed at the ends of the rod (173) (174) for operating the links (175, 176) Auxiliary pin stand 190 alternately forging molding apparatus characterized in that to push the supporting pins in contact with the inner circumferential wall of the machine body 100 alternately. The material according to claim 1, wherein the tongs 161 and 161a are held in a slightly advanced state when the material is held in the circumferential wall of the position where the cutting material is pushed while cutting the material 210 with both cutting knives 160 and 160a. The pins 168 and 168a to push the rods movably, and the pins 168 and 168a are installed at the ends of the rear links 167 and 167a and the left and right auxiliary shafts 162 and 162a. Bi-directional forging molding apparatus characterized in that the interlocking operation by the cam wheel (166) (166a).