KR200491105Y1 - Device for insert a insert product and injection molding machine with the same - Google Patents

Abstract

The present invention is an insert inserting apparatus used in an injection molding machine for extruding a molded product by extruding the resin in the mold, the insert inserting device is attached to the distal end of the articulated robot arm, the chuck unit for mounting the insert in the mold And the chuck unit includes at least one positioning pin protruding toward the front so that the chuck unit is positioned corresponding to the mold, and the mold is positioned at a position corresponding to the positioning pin. And a positioning pin, wherein the positioning pin includes a cylinder having one end blocked and a piston inserted into the cylinder and moving in a front and rear direction by a piston driving part, wherein at least one penetrating portion formed along a circumferential direction on a side of the cylinder one end portion; A ball and a locking ball disposed on the inner side of one end of the cylinder, further comprising the front movement of the piston Part of the locking ball in the locking ball to push in a radial direction of the cylinder protrudes through the through-hole provides an insert inserted into the device, characterized in that the positioning sphere and the positioning pin fixed.

Description

Insert Insertion Device and Injection Molding Machine Including It {DEVICE FOR INSERT A INSERT PRODUCT AND INJECTION MOLDING MACHINE WITH THE SAME}

The present invention relates to an insert inserting apparatus and an injection molding machine including the same, and more particularly, to an insert inserting apparatus for mounting an insert during injection molding a molded article and an injection molding machine including the same.

In general, an injection molding machine is a device for making injection molded articles such as automobile interior and exterior parts and cases of various home appliances by injecting resin into a mold.

In addition, insert injection refers to inserting a structure called an insert into a mold in advance and injection molding to insert the insert into an injection molded product.

Conventionally, such insert injection used to insert or mount the insert directly into the injection mold while visually confirming with the naked eye. However, some inserts may be missing or the position may be changed depending on the number of inserts or the skill of the operator. There was a problem that a high incidence of defects occurred in the injection molded products. In addition, since the operator inserts or mounts the insert into the mold, there is a problem in that workability and productivity are deteriorated.

Therefore, recently, an insert molding apparatus or an injection molding machine including the same has been on the rise, by inserting a gripped insert using an automated robot and inserting the gripped insert into a mold.

1 is a view showing the overall appearance of a conventional injection molding machine, Figure 2 is a view showing the insert inserting device of the conventional injection molding machine.

As shown in FIG. 1, the conventional injection molding machine 100 includes molds 104 and 105, a resin supply unit 102 for supplying molten resin in the molds 104 and 105, and the injection molding machine 100. It may include a multi-joint robot arm 110 made up of a plurality of rotational joints to move in a multi-direction fixed to the body of the chuck unit 120 attached to the distal end.

The molds 104 and 105 may include a moving side mold 105 moving in the front and rear direction, and a fixed side mold 104 disposed opposite to the moving side mold 105 but not moving during molding.

The resin supply unit 102 plasticizes the plastic resin temporarily stored in the hopper 101 by using a heater, and flows the plasticized resin into the molds 104 and 105 through the nozzle 103 through the advancement of the screw. .

As shown in FIG. 2, the chuck unit 120 is attached to the distal end of the articulated robot arm 110 to be used for a multipurpose tool such as taking out a molded article or inserting an insert into a mold.

At this time, the positioning pins (122a, 122b) protrudingly formed in front of the chuck unit 120, a correspondingly formed positioning tool (not shown) in the mold can be formed, corresponding to the positioning tool, A guide bush (not shown) into which the positioning pins 122a and 122b are inserted may be interposed.

The positioning pins 122a and 122b are inserted into the positioning tool so that the positioning pin moves along the positioning tool, thereby guiding the entry of the chuck unit 120 when moving forward toward the mold. As a result, the main body of the chuck unit 120 may be located corresponding to the mold.

However, even when the positioning pins 122a and 122b are inserted into the positioning tool, the corresponding positions do not coincide with each other when the insert provided by the chuck unit 120 is inserted into or mounted on the mold. There may be a position error, and this error causes a problem that causes the chuck unit 120 to push back by the reaction when the chuck unit 120 provides an insert to the mold.

As a result, when the chuck unit 120 pushed back continues to insert or mount the insert into the mold, the insert may not be inserted or mounted in the mold and fall to the bottom so that the insert is missing from the mold. Occurs.

Therefore, there is an urgent need for a technique for solving such a problem.

According to the present invention, even when the insert provided by the chuck unit is inserted or mounted in the mold, even if the corresponding positions do not coincide with each other and there is a position error, the chuck unit reacts when the insert is provided to the mold. The unit body is not pushed backward so that the insert mounting position of the remaining mold and the insert providing position of the chuck unit coincide with each other so that the insert can be inserted or mounted in the mold without falling to the bottom. To provide an insert inserting apparatus and an injection molding machine including the same.

In order to solve the above problems, the present invention is an insert inserting device used in an injection molding machine for extruding a molded product by extruding the resin in the mold, the insert inserting device is attached to the distal end of the articulated robot arm to insert the insert And a chuck unit for mounting on a mold, wherein the chuck unit includes at least one positioning pin protruding forward so that the chuck unit is positioned corresponding to the mold, and the mold includes the positioning pin. And a positioning tool at a position corresponding to the positioning pin, wherein the positioning pin includes a cylinder whose one end is blocked and a piston inserted into the cylinder and moved forward and backward by a piston driving part, wherein At least one through hole formed along the and further comprises a locking ball disposed on the inner side of the cylinder end portion For example, when the piston moves forward, the locking ball is pushed in the radial direction of the cylinder so that a part of the locking ball protrudes through the through hole so that the positioning pin and the positioning hole are fixed. Provide the device.

According to one embodiment, the piston, the front portion has a tapered shape, the locking ball may move along the tapered shape when the piston moves forward and backward.

According to one embodiment, the aperture of the through hole may be smaller than the outer diameter of the locking ball.

In addition, the present invention includes the insert insertion device, the articulated robot arm, the mold and a resin supply unit for supplying the molten resin in the mold, the mold is a moving side mold to move in the front and rear direction, and the moving side mold It includes a fixed side mold which is disposed opposite and does not move during molding, the moving side mold provides an injection molding machine, characterized in that driven by hydraulic pressure.

Since the positioning pin of the insert inserting apparatus according to the present invention is fixed after being inserted into the positioning tool, even when the insert provided by the chuck unit is inserted or mounted in the mold, the corresponding positions do not coincide with each other and there is a position error. When the chuck unit provides an insert to the mold, the chuck unit body may not be pushed back by a reaction.

Therefore, even if the chuck unit continuously provides the insert to the mold, the insert does not fall to the bottom in the remaining part of the mold where the insert mounting position and the insert providing position of the chuck unit do not coincide with each other. By being able to be continuously inserted or mounted in the mold, it is possible to prevent a decrease in workability and productivity in the case of a molded article including a plurality of inserts.

In addition, since the positioning pin of the insert inserting apparatus according to the present invention is fixed after being inserted into the positioning tool, even if an impact or vibration occurs, the position of the chuck unit is fixed so that the insert can be inserted or mounted at the correct position of the mold. have.

In addition, the insert inserting apparatus and the injection molding machine including the same according to the present invention, even if the mold opening distance deviation of the moving mold using the hydraulic force can be in close contact with the chuck unit.

1 is a view showing the overall appearance of a conventional injection molding machine.
2 is a view showing the insert inserting device of the conventional injection molding machine.
3 is a view showing an insert insertion apparatus according to an embodiment of the present invention.
4 is a view showing a mold opening distance deviation corresponding unit according to an embodiment of the present invention.
5 is a view showing the length of the elastic means according to the mold opening distance deviation of the mold according to an embodiment of the present invention.
6 is a view showing a positioning pin according to an embodiment of the present invention.
FIG. 7 is an exploded view of the positioning pin of FIG. 6.
FIG. 8 is a view illustrating an insert insertion apparatus including a positioning pin of FIG. 6.
FIG. 9 is a view illustrating an insert insertion apparatus including a mold opening distance deviation corresponding unit of FIG. 4 and a positioning pin of FIG. 6.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings, and the same or similar components will be given the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or mixed in consideration of ease of specification, and do not have distinct meanings or roles from each other. In addition, in describing the embodiments disclosed herein, when it is determined that the detailed description of the related known technology may obscure the gist of the embodiments disclosed herein, the detailed description thereof will be omitted. In addition, the accompanying drawings are intended to facilitate understanding of the embodiments disclosed herein, and the technical ideas disclosed herein are not limited by the accompanying drawings, and all modifications included in the spirit and technical scope of the present invention are included. It should be understood to include equivalents and substitutes.

When a component is said to be "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in the middle. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

As used herein, the terms "comprises" or "having" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described on the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Insert insertion device

3 is a view showing an insert insertion apparatus according to an embodiment of the present invention, Figure 4 is a view showing a mold opening distance deviation corresponding unit according to an embodiment of the present invention.

As shown in Figure 3 and 4, the insert insertion apparatus according to an embodiment of the present invention is attached to the distal end of the articulated robot arm 110 and the chuck unit 120 for mounting the insert in the mold, and Mold deviation distance interposed between the distal end of the articulated robot arm 110 and the chuck unit 120 so that the chuck unit 120 and the mold may come into close contact when the chuck unit 120 moves toward the mold. It may include a corresponding unit (130). In this case, the mold opening distance deviation corresponding unit 130 may include at least one elastic means (135, 136) disposed toward the front of the chuck unit (120).

Of course, the components shown in FIGS. 3 to 4 are not essential, so that an insert insertion apparatus having more or fewer components may be implemented. Hereinafter, each component will be described.

The chuck unit 120 is attached to the distal end of the articulated robot arm 110 and is a tool for multi-purpose such as taking out a molded article or inserting an insert into a mold. Can be. The chuck unit 120 according to the present invention is not particularly limited in its use, but may include, for example, a device for mounting an insert such as a nut to a mold.

The chuck unit 120 has a mold opening distance deviation corresponding unit according to one embodiment of the distal end side of the articulated robot arm 110 (specifically, to be described later) in order to mount the insert to a mold as described above. 130)) and the base plate 121 is fixed to the chucking unit 123 for inserting or mounting the gripped insert in front of the base plate 121 and the gripping insert into the mold, and the chuck unit ( 120) may include at least one positioning pin (122a, 122b) protruding forward to guide the position so that the body can be located corresponding to the mold.

The positioning pins 122a and 122b are inserted into a positioning tool (not shown) (or a guide bush (not shown) inserted into the positioning tool) formed concave in the mold so as to correspond to the positioning pins. As the 122a and 122b move along the positioning tool (not shown), the chuck unit 120 may guide its entry when the chuck unit 120 moves forward toward the mold.

Of course, since the position, size, length, etc. of the positioning pins 122a and 122b or the chucking unit 123 of the chuck unit 120 vary depending on the molded article, the present invention is not particularly limited thereto.

Meanwhile, the molds 104 and 105 may include a moving side mold 105 moving in the front and rear direction, and a fixed side mold 104 disposed to face the moving side mold 105 but not moving during molding.

Here, the moving side mold 105 is opened and closed by moving back and forth by the hydraulic driving unit 106 using the pressure oil, but the moving side mold 105 is driven by the hydraulic driving unit 106 using the pressure oil. Because of the movement, it is difficult to accurately control the mold opening distance as much as the mold opening distance at the time of mold opening, and thus there is a problem that the mold opening distance deviation occurs.

As a result, since the articulated robot arm 110 is controlled using a servo motor and a servo control device as described below, accurate position or direction control is possible, but as described above, the movement side mold is controlled by hydraulic pressure. Since the 105 may not move to the correct position, in this case, the insert gripped by the chuck unit 120 may not be inserted or mounted in the mold but may fall to the bottom, causing the insert to be missing from the mold. Occurs.

In order to solve this problem, according to an embodiment of the present invention, the mold opening distance deviation response unit 130 may be interposed between the distal end of the articulated robot arm 110 and the chuck unit 120.

The articulated robot arm 110 is made of a multi-joint, one end is fixed to the main body of the injection molding machine 100, and controls the position movement of the chuck unit 120 attached to the distal end of the other end. The articulated robot arm 110 includes a plurality of connection arms 112 and 113 rotatably installed to control the positional movement of the chuck unit 120, and ends of the connection arms 112 and 113. It may include a chuck fixed arm 114 is fixed and coupled to the chuck unit 120, in this case one end of the mold opening distance deviation corresponding unit 130 is to be fixed to the chuck fixed arm 114 And, the other end of the mold opening distance deviation unit 130 may be fixed to the chuck unit 120.

The mold opening distance deviation unit 130 may include at least one elastic means disposed toward the distal end of the articulated robot arm 110 or the chuck unit 120, the elastic means The second support plate 132 is compressed by moving toward the distal end of the articulated robot arm 110 based on the first support plate 131, or vice versa. It may be extended by moving toward the front of the chuck unit 120.

Therefore, in the state where the positioning pins 122a and 122b corresponding to the positioning tool formed in the mold are inserted, the chuck unit 120 is positioned by the positioning pins 122a and 122b. The chuck unit absorbs the impact generated when the front end portions of the positioning pins 122a and 122b abut on the inner end portions of the positioning tool when the guide pin moves along the front side, or the mold opening distance deviation occurs. 120 and the mold to be in close contact.

At this time, the elastic means, as shown in Fig. 5, when the position of the moving side mold 105 is equal to ①, that is, when the mold opening distance deviation is (+) maximum, at least the length is the minimum length at the maximum compression In contrast, when the position of the moving side mold 105 is equal to (2), that is, when the mold opening distance deviation is (-) minimum, at least the length is less than or equal to the maximum length at the minimum compression (or zero external force). desirable. As a result, it is preferable that the change amount of the length of the elastic means is greater than or equal to the range of mold opening distance deviation of the movable side mold 105.

As a result, when the articulated robot arm 110 moves the chuck unit 120 to the mold, the final movement control causes the positioning pins 122a and 122b to contact the inner end portion of the positioning tool in the mold. It is preferable to move the chuck unit 120 forward until it is.

As described above, the mold opening distance deviation correspondence unit 130 may include a first support plate 131 fixed to the distal end of the articulated robot arm 110 and the first support. A second support plate 132 fixed to the chuck unit 120 (specifically, the base plate 121) and parallel to the plate, and the first support plate 131 and the second support plate 132. At least one spring 135, 136 installed to be stretchable in an opposite direction of the first support plate 131 and the second support plate 132, and the inner longitudinal direction of the spring (135, 136) It may include an interpolated spring guide pins (1333, 1343).

At this time, the number or arrangement of the spring (135, 136) is not particularly limited, but may be arranged in each corner of the first or second support plate (131, 132) of the square.

In addition, one end of the spring guide pins 1333 and 1343 is fixed to the second support plate 132 and the other end is installed to penetrate the first support plate 131, so that the second support plate 132 is It can be supported to move along the stretching direction of the spring (135, 136).

In addition, the back of the first support plate 131 may further include a fixed cylindrical tubular support cylinder (1331, 1341). Accordingly, the spring guide pins 1333 and 1343 are inserted into the support cylinders 1331 and 1341 to move the second support plate 132 along the extension direction of the springs 135 and 136. The support cylinders 1331 and 1341 may support the forward and backward movement of the spring guide pins 1333 and 1343.

Specifically, the support cylinders 1331 and 1341 are installed to penetrate through the first support plate 131, so that the flanges of the support cylinders 1331 and 1341 hang on the front surface of the first support plate 131. Can be fixed. In this case, the spring guide pins 1333 and 1343 may be inserted into the support cylinders 1331 and 1341, and one end may be fixed to the second support plate 132, and the other end may be the tubular support cylinder 1331, 1341 or the separation prevention blocks 1334 and 1344 that may be spread across the support cylinders 1331 and 1341 so as not to be separated from the first support plate 131.

Accordingly, the springs 135 and 136 are stretched by the external force, and the second support plate 132 (or the chuck unit 12 fixed thereto) may move along the stretch direction of the springs 135 and 136. .

Accordingly, the insert inserting device can keep the chuck unit in close contact with the mold even when a mold opening distance deviation of the mold moving due to the hydraulic force occurs, whereby the insert gripped by the chuck unit 120 is inserted into the mold. Alternatively, the problem of missing inserts in the mold caused by falling to the floor without being mounted can be solved.

Injection Molding Machine

The above insert inserting device may be attached to the distal end of the injection molding machine 100 and specifically the articulated robot arm 110.

As illustrated in FIG. 1, the injection molding machine 100 includes molds 104 and 105, a resin supply unit 102 for supplying molten resin in the molds 104 and 105, and the injection molding machine 100. It may include a multi-joint robot arm 110 made up of a plurality of rotational joints to move the insert insertion device and the chuck unit 120 in a multi-direction fixedly attached to the distal end.

The resin supply unit 102 heat-plasticizes the plastic resin temporarily stored in the hopper 101 by a heater wound outside the heating cylinder, and opens the nozzle 103 positioned at the distal end of the heating cylinder by plasticizing the resin through advancement of the screw. And flows into molds 104 and 105.

In addition, the molds 104 and 105 may include a moving side mold 105 moving in the front and rear direction, and a fixed side mold 104 disposed to face the moving side mold 105 but not moving during molding.

Here, the moving side mold 105 is opened and closed by moving back and forth by the hydraulic drive unit 106 using the pressure oil. However, since the movable side mold 105 is moved by the hydraulic drive unit 106 using the pressure oil as described above, it is difficult to control the movement to the exact position by the preset mold opening distance at the time of mold opening, so that the mold opening distance deviation occurs. Although there is a problem, it can be inserted or mounted in the moving side mold 105 by the insert inserting apparatus described above without missing the insert.

On the other hand, in the term used herein, the front of the chuck unit 120 indicates the direction toward the moving side mold (105).

Positioning pin

6 is a view showing a positioning pin according to an embodiment of the present invention, Figure 7 is an exploded view of the positioning pin of FIG.

6 and 7, the positioning pins 140a and 140b according to the embodiment of the present invention are inserted into the cylinders 141 and 142, one end of which is blocked, and the cylinders 141 and 142. And a piston 143 moving forward and backward by the piston driving part 145, wherein the cylinders 141 and 142 include at least one through hole h formed along the circumferential direction at one side of the one end portion, Further comprising a locking ball (not shown) disposed on the inner side of one end of the cylinder, when the piston 143 moves forward to push the locking ball in the radial direction of the cylinder portion of the locking ball is the through hole Protruding to the outside through (h), it is possible to fix the positioning pin and the positioning tool.

Of course, the components shown in FIGS. 6 to 7 are not essential, so that a positioning pin having more or fewer components may be implemented. Hereinafter, each component will be described.

The cylinders 141 and 142 are tubular with one end blocked, and at least one through hole h may be formed at one end of the cylinders 141 and 142 along the circumferential direction.

According to an embodiment, the cylinders 141 and 142 may be formed of a tubular cylinder body 142 and a dome-shaped cylinder cover 141 covering one end of the cylinder body 142. At least one through hole h may be formed along the circumferential direction on the outer circumferential surface of the cylinder cover 141.

The locking ball (not shown) is a spherical ball having a rigidity of a predetermined size or more, and a number of locking balls corresponding to the through hole h may be disposed in one end of the cylinders 141 and 142.

The aperture of the through hole (h) has a size smaller than the outer diameter of the locking ball, so that the locking ball is not separated from the outside through the through hole (h), the outer diameter of the locking ball is a part It is preferable not to be excessively large so as to be exposed to the outside through the through hole (h) to protrude. That is, since a plurality of locking balls are partially exposed through the plurality of through holes h, a plurality of locking balls may be formed at one end of the cylinders 141 and 142. Thus, when the locking ball is formed at one end of the cylinder (141, 142) in the state that the positioning pins (140a, 140b) is inserted into the positioning sphere, the positioning pins (140a, 140b) is The position can be fixed within the positioning tool.

On the other hand, the piston 143 is inserted into the cylinders (141, 142) can be moved in the front and rear direction by the piston driver 145, the piston 143 is forward, that is, one end of the cylinder (141, 142) When the piston 143 moves, the piston 143 may push the locking ball located in one end of the cylinders 141 and 142 in the radial direction through the through hole h, and vice versa. That is, when moving to the other end of the cylinder (141, 142), the locking ball located inside one end of the cylinder (141, 142) can be drawn into the through hole (h) by its own weight or other means have.

At this time, the front portion of the piston 143 preferably has a tapered shape. That is, when the piston 143 moves forward and backward, the locking ball is preferably exposed to the outside or introduced into the inside through the through hole h while being in contact with the outer surface of the tapered piston 143.

That is, when the piston 143 is moved forward, the locking ball can be exposed to the outside through the through hole (h) while maintaining a state in which the locking ball is interviewed with the tapered outer surface, and vice versa When the piston 143 is moved backward, the locking ball can be drawn into the through hole (h) by its own weight while maintaining a state in which it interviews the tapered outer surface.

At this time, when the piston 143 is moved backward, the locking ball, so that a part of the locking ball in the position of the through hole (h) corresponding to it can be rolled over without a separate means without rolling It is preferable to maintain the state seated on the outer surface of the piston 143.

On the other hand, the number of the through-hole (h) and the corresponding locking ball is not particularly limited, but is preferably at least four or more along the outer circumferential surface of the cylinder or the cylinder cover 141.

In addition, as described above, the cylinders 141 and 142 may include a tubular cylinder body 142 and a cylinder cover 141 located at one end of the cylinder body 142. The cylinder body 142 and the cylinder cover 141 are preferably fastened by screwing. That is, it is desirable for the operator to facilitate the replacement of the locking ball by allowing the cylinder cover 141 to be easily dismounted from the cylinder body 142 as necessary.

The piston driving unit 145 is a means for moving the piston 143 forward or backward, it can be moved by pressurizing or depressurizing the force to the animal to be a medium as a fluid. Of course, the piston driving unit 145 may be controlled by a separate control device, a detailed description thereof will be omitted.

For example, by injecting air through the air inlet 146a to pressurize the piston 143 through the air to move the piston 143 forward and maintain the state (exposed of the positioning pin by the locking ball exposure) In the contrary, the piston 143 is moved backwards by sucking the air through the air outlet passage 146b and decompressing the piston 143. The fixation state between 140a and 140b) and the positioning tool can be released.

The piston 143 may form a guide protrusion 144 at the other end to be coupled to the piston driving unit 145, and the piston 143 may be moved forward and backward by receiving a driving force by the guide protrusion 144. Can be.

As a result, the positioning pins 140a and 140b of the insert insertion apparatus according to the present invention are inserted into the corresponding positioning tool and moved along the positioning tool, thereby moving forward toward the mold of the chuck unit 120. Of course, after the front end of the positioning pins (140a, 140b) abuts the inner end of the positioning hole, the piston 143 moves forward to expose a portion of the locking ball to the outside. The locking pins may fix the positioning pins 140a and 140b and the positioning tool.

By the fixing pins 140a and 140b and the positioning tool fixed in this way, the chuck unit 120 is fixed in the position of the chuck unit even if there is an external impact so that the insert can be inserted or mounted at the correct position of the mold. Of course, since the positioning pin is fixed after being inserted into the positioning tool, the corresponding position when the insert provided by the chuck unit 120 is inserted or mounted in the mold does not match. Even if there is a position error, the chuck unit 120 may prevent the main body of the chuck unit 120 from being pushed back by the reaction when the insert is provided to the molds 104 and 105.

Therefore, even though the chuck unit 120 continuously provides inserts to the molds 104 and 105, the insert mounting position of the remaining molds 104 and 105 and the insert providing position of the chuck unit 120 are different from each other. The inserts can be continuously inserted into or mounted on the molds 104 and 105 without falling to the bottom in a position where there is no position error, thereby reducing workability and productivity in a molded article including a plurality of inserts. Can be prevented.

FIG. 8 is a view illustrating an insert insertion apparatus including a positioning pin of FIG. 6, and as shown in FIG. 9 by a combination of the above-described embodiments, the insert insertion apparatus according to the present invention includes a mold opening distance deviation corresponding unit ( 130 and positioning pins 140a and 140b.

Exemplary embodiments of the present invention have been described in detail with reference to the drawings. The description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention can be easily modified in other specific forms without changing the technical spirit or essential features of the present invention.

Therefore, the scope of the present invention is shown by the claims below rather than the detailed description, and all changes or modifications derived from the meaning, scope, and equivalent concepts of the claims are included in the scope of the present invention. Should be interpreted.

100: injection molding machine 101: hopper
102: resin supply unit 103: nozzle
104: fixed side mold 105: moving side mold
106: hydraulic drive unit 110: articulated robot arm
111: fixing part 112, 113: connecting arm
114: chuck fixed arm 120: chuck unit
121: base plate 122a, 122b: positioning pin
123: chucking unit 130: mold opening distance deviation unit
131: first support plate 132: second support plate
1331, 1341: support cylinder 1332, 1342: flange
1333, 1343: Spring guide pins 1334, 1344: Breakaway prevention block
135, 136: spring 140a. 140b: Positioning pin
141: cylinder cover 142: cylinder body
143: piston 144: guide protrusion
145: piston drive part 146a, 146b: air outlet
h: through hole t: tapered portion

Claims (4)

Mold-The mold includes a moving side mold moving in the front and rear direction by hydraulic pressure, and a fixed side mold disposed opposite to the moving side mold but not moving during molding. In the insert insertion device used in the molding machine,
The insert inserting device for inserting the insert on the movable side mold side,
A chuck unit attached to the distal end of the articulated robot arm to mount an insert to the moving side mold; And
At least one elastic means interposed between the distal end of the articulated robot arm and the chuck unit to be in close contact with the chuck unit and the mold when the chuck unit moves toward the mold. Mold opening distance deviation unit, including;
Including,
The mold opening distance deviation unit,
A first support plate fixed to the distal end of the articulated robot arm;
A second support plate fixed to the chuck unit;
At least one spring positioned between the first support plate and the second support plate to be stretchable in an opposite direction between the first and second support plates;
A tubular support cylinder inserted into the rear surface of the first support plate; And
It is installed to penetrate through the first support plate, is inserted along the inner longitudinal direction of the spring and the support cylinder, one end is fixed to the second support plate, the other end is a distal end block of the support cylinder by the combined separation prevention block A spring guide pin across;
Including,
The chuck unit includes at least one positioning pin protruding forward so that the chuck unit is positioned corresponding to the moving side mold, and the moving side mold is positioned at a position corresponding to the positioning pin. Contains a sphere,
The articulated robot arm is controlled to be moved by a servo motor, but the movable side mold is controlled to be moved by hydraulic pressure, so that a gap error occurs between the insert mounting position of the movable side mold and the insert providing position of the chuck unit. In order to cope, the last movement control when moving the chuck unit to the movable side mold moves the chuck unit forward until the tip of the positioning pin is in contact with the inner distal end of the positioning tool, whereby the mold opening distance deviation is reduced. Even if the chuck unit and the moving side mold to be in close contact,
The variation in the length of the elastic means is such that the moving side mold and the chuck unit may be in close contact with each other in any of the (+) direction and the (-) direction with respect to the mold opening distance of the injection molding machine. Characterized in that more than the mold opening distance deviation range of the injection molding machine,
The support cylinder supports the forward and backward movement of the spring guide pin, and the second support plate moves along the compression direction of the spring by an external force so that the chuck unit and the moving side mold come into close contact with each other, or by a restoring force. The second support plate is moved along the extension direction of the spring,
The positioning pin includes a cylinder of which one end is blocked, a piston inserted into the cylinder and moved forward and backward by a piston driving part, and at least one through hole formed along the circumferential direction on the side of the cylinder, and the cylinder. Further comprising a locking ball disposed on the inner side of one end, the locking ball is pushed in the radial direction of the cylinder during the forward movement of the piston portion of the locking ball protrudes through the through hole to the positioning pin and the Insert insertion apparatus, characterized in that the positioning tool is fixed. The method of claim 1,
The piston has a shape in which a portion of the front is tapered, and the locking ball moves along the tapered shape when the piston moves forward and backward. The method of claim 1,
Insert insertion device, characterized in that the aperture of the through hole is smaller than the outer diameter of the locking ball. An insert insertion apparatus according to any one of claims 1 to 3;
The articulated robot arm;
The mold; And
A resin supply unit supplying molten resin in the mold;
Injection molding machine comprising a.

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