JPH0619947U - Cleaning device for forging machine - Google Patents

Abstract

(57) [Abstract] [Purpose] A mating surface between a fitting hole on the machine base side of a press forming machine and a die fitted in the fitting hole, or a fitting hole on the ram side and the fitting hole. An object of the present invention is to provide a cleaning device for a forging machine capable of automatically and reliably cleaning the mating surface with the punch to be mated without resorting to manual work. A groove 14b is formed in contact with a mold fitting hole 14a in a die block 14 into which a mold 15 is fitted, and a pipe 30 to which a fluid is supplied through a fluid supply nozzle 32 is provided in the groove 14b. While being arranged, the fluid is ejected from a plurality of injection ports 30a ... 30a formed in the pipe 30 toward the inside of the mold fitting hole 14a and the inner peripheral surface of the fitting hole 14a.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cleaning device for a press forming machine, particularly, a mating surface of a machine-side fitting hole and a die fitted in the fitting hole, or a ram-side fitting hole and the fitting hole. To a cleaning device of a forging machine configured to clean a mating surface with a punch to be punched.

[0002]

[Prior art]

 In a press forming machine that presses a material with a die provided on a machine base and a punch that moves back and forth with respect to the die to forge a bolt, a nut, or other parts having various shapes, A die including a die is arranged at a predetermined position of the machine base facing the punch, and this mold has a load receiving block 2 interposed at a predetermined position of the machine base 1 as shown in FIG. The die case 5 is inserted into the attached die block 3 and fixed to the die block 3 by the fixing bolts 4, and the die case 5 is press-fitted from the rear end portion of the case 5 into the tapered hole 5a formed at the tip thereof. The die 7 faces the punch 6, and the pressure receiving member 8 is disposed inside the die block 3 behind the die case 5. The punch 7 is provided at the axial center of the die case 5 and the pressure receiving member 8. Molded by 6 and die 7 Extrusion pin 9a for the material a push from the inside the die 7 that is, 9b and the intermediate pin 10 is inserted.

[0003]

[Problems to be solved by the device]

 By the way, as shown in FIG. 10, when the material a is pressed between the punch 6 and the die 7, fine metal powder such as metal fins and bond powder is generated. Not only in the die formed by the die case 5, but also on the mating surface of the die case 5 and the die block 3, that is, on the inner peripheral surface of the die fitting hole 3a formed in the die block 3, This causes seizure between the die block 3 and the die case 5, making it difficult to take out the die case 5.

Further, the fine metal powder deposited and adhered to the inner peripheral surface of the die fitting hole 3a causes a decrease in the mounting accuracy of the die case 5 with respect to the fitting hole 3a, resulting in a decrease in the dimensional accuracy of the product. It was also a cause of defective products. Therefore, it is necessary to periodically take out the die case 5 from the die fitting hole 3a of the die block 3 and clean the inner peripheral surface of the fitting hole 3a. The fine metal powder adhering to the inner peripheral surface of the abutment hole 3a has been removed, and its workability has been extremely poor. Particularly, when the inner diameter of the die fitting hole 3a is small, it becomes difficult to remove the fine metal powder adhering to the inner depth of the fitting hole 3a, and conversely, when the inner diameter is large. However, it took a lot of time to remove the metal powder, and the workability was poor in any case.

The punch 6 is also fitted into a fitting hole formed in a ram (not shown) that moves back and forth toward the die 7. The problem was the removal of the fine metal powder adhering to the.

The present invention addresses the above-described situation, and it is a mating surface between a fitting hole on a machine base side of a press forming machine and a die fitted in the fitting hole, or a ram side fitting surface. An object of the present invention is to provide a cleaning device for a forging machine capable of automatically and reliably cleaning the mating surface between the dowel hole and the punch fitted in the fitting hole without resorting to manual work. .

[0007]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention is configured as follows.

First, a device according to claim 1 of the present application (hereinafter, referred to as a first device) is a die fitted into a fitting hole on a machine base side, and a ram side fitting that moves back and forth toward the die. In a cleaning device of a forging machine that presses a material with a punch fitted in a dowel, it is common to form a fluid supply passage for supplying fluid around the fitting hole on the machine base side or the ram side. In addition, an injection port for spraying a fluid toward the inner peripheral surface of the fitting hole is formed in the fluid supply passage.

Further, a device according to claim 2 of the present application (hereinafter, referred to as a second device) is, like the first device, a die fitted in a fitting hole on a machine base side and a die facing the die. In a cleaning device of a press forming machine that press-processes a material between a punch fitted in a fitting hole on the ram side that moves forward and backward, it is inserted into the fitting hole on the machine base side or the ram side. It has a main body that is inserted into and taken out of the fitting hole, and a cleaning member that is provided at the end of the main body and that contacts the inner peripheral surface of the fitting hole and rotates. And a jet port for spraying a fluid toward a blade integrally provided with the cleaning member so as to rotate the cleaning member in the fluid supply passage. And

Further, the invention according to claim 3 of the present application (hereinafter, referred to as the third invention) is inserted into the fitting hole on the machine base side or the ram side and is inserted into the fitting hole as in the second invention. A rotary drive for rotating the cleaning member to the main body, which includes a main body that is inserted into and removed from the main body, and a cleaning member that is provided at an end of the main body and that rotates by contacting the inner peripheral surface of the fitting hole. It is characterized in that it is equipped with means.

Furthermore, in addition to the configuration of the above-mentioned third invention, a device according to claim 4 of the present application (hereinafter, referred to as a fourth device) has a stocker on which a main body can be mounted, and the stocker also on the machine base side. Or, a carrier that conveys between the set position where the main body can be taken in and out of the fitting hole on the ram side and a retracted position in the vicinity of the set position, and a main body mounted on the stocker and mounted on the stocker. Drive means for engaging and disengaging the main body with respect to the fitting hole is provided.

[0012]

[Action]

 According to the first aspect, the fluid is supplied to the fluid supply passage formed around the fitting hole on the machine base side or the ram side, and the fluid is supplied from the injection port formed in the fluid supply passage to the inside of the fitting hole. As a result, the fine metal powder adhering to the inner peripheral surface of the fitting hole, that is, the mating surface with the die or punch is automatically and surely injected. Will be removed.

According to the second aspect of the invention, a cleaning member is provided at an end portion of the main body inserted into the fitting hole on the machine base side or the ram side, the cleaning member being in contact with the inner peripheral surface of the fitting hole and rotating. A blade provided with a fluid supply passage for supplying a fluid to the machine base around the fitting hole, and provided integrally with the cleaning member so as to rotate the cleaning member in the fluid supply passage. Since an injection port that sprays fluid toward the blade is formed, by inserting and removing the main body into and from the fitting hole, the injection from the injection port toward the blade integrated with the cleaning member is performed with good directivity. The cleaning member comes into contact with the inner peripheral surface of the fitting hole and is rotated by the fluid so that the fine metal powder adhered to the inner peripheral surface is automatically and surely removed.

Further, according to the third aspect of the present invention, since the cleaning member rotated by the driving means is provided at the end of the main body inserted into the fitting hole on the machine base side or the ram side, the main body is referred to as above. When the cleaning member comes into contact with the inner surface of the fitting hole and rotates by moving it in and out of the fitting hole, the fine metal powder adhering to the inner surface is automatically and reliably removed. Will be done.

Further, according to the fourth aspect, the stocker on which the main body provided with the cleaning member and the rotation driving means for rotating the cleaning member can be mounted is provided on the machine base side or the ram side by the carrier. Drive means provided on the carrier while being conveyed between a set position where the main body can be inserted into and taken out of the fitting hole of and the retracted position near the set position, and the stocker being conveyed to the set position. As a result, the main body is taken in and out of the fitting hole, which makes it possible to fully automate the cleaning of the inner peripheral surface of the die or punch after taking it out of the fitting hole. The sexuality will be further improved.

[0016]

【Example】

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

FIG. 1 is a plan view of a main part of a multi-stage press forming machine equipped with a cleaning device for a press forming machine according to the present invention. As shown in FIG. A die block 14 is fixed to a predetermined position of the machine base 12 via a wedge body 13, and a plurality of molds 15 ... 15 (four in the example in the figure) are fixed to the die block 14 at regular intervals. They are fitted and fixed by fixing bolts 16 ... Further, the same number of punches 18 as the respective molds 15 are provided on the front surface of the ram 17 which moves back and forth toward the respective molds 15 via a drive motor (not shown) and a crank mechanism driven by the drive motors. Each punch 18 and each die 15 constitute a plurality of stages of forging stations (a) to (d).

Further, a wire rod supply quill 19 through which a wire rod S supplied from the rear of the machine base 12 of the forging machine 11 is inserted is fitted to one side portion of the die block 14, and the wire rod is quilled. The wire rod S, which is intermittently pushed forward by a predetermined amount from the supply quill 19, is reciprocally driven with a predetermined stroke in the arranging direction of the molds 15 in association with the forward / backward movement of the ram 17. A material (not shown) having a predetermined size is formed by cutting with 20. Further, a pusher 21 is installed inside the die block 14 adjacent to the wire supply quill 19, so that the pusher 21 pushes forward the material cut into a predetermined size by the cutter means 20. It has become.

The material extruded by the pusher 21 is clamped by a material transfer device (not shown) which has a conventionally well-known structure and is clamped by the metal molds 15 forming the forging stations (a) to (d). The bolts, nuts, and other parts of various shapes are sequentially transferred to the front surface of the shaft center and are gradually and stepwise forged between the respective dies 15 and the punches 18 facing each other. Products such as products are continuously molded.

Then, in this embodiment, as shown in FIGS. 2 and 3, the respective molds 15 are fitted into the mold fitting holes 14 a of the die block 14 and fixed by the fixing bolts 16. The fixed die case 22, the dies 23a and 23b fitted in the tapered holes 22a formed at the tip of the die case 22, and the dies 23a and 23b fitted in the die case 22 together. It is composed of a pressure receiving member 24 and a spacer 25 integrally connected to the die case 22 via a connecting means (not shown) such as a bolt, and the rear end of the spacer 25 is a die block 14 Is supported by a load receiving block 26 provided between the machine base 12 and the machine base 12. It should be noted that, at the shaft center of the die 15, push-out pins 27a, 27b and intermediate pins 28 for pushing out the material driven by the punch 18 into the forging space formed by the dies 23a, 23b from the forging space. Has been inserted.

Next, the structure of the cleaning device of this embodiment will be described. As shown in FIGS. 2 and 3, the cleaning device is in contact with the mold fitting hole 14a of the die block 14 in the axial direction of the fitting hole 14a. A groove 14b is formed extending in the groove 14b, and a pipe 30 is arranged in the groove 14b. One end of the pipe 30 is closed by a plug 31 and the other end is formed on the upper surface of the die block 14. And the fluid supply port 14c. The fluid supply port 14c is connected to a supply nozzle 32 for supplying a predetermined fluid, for example, compressed air, cleaning oil having a predetermined pressure, or a mixed fluid thereof into the pipe 30. A predetermined fluid is supplied into the pipe 30 via the nozzle 32.

Further, as shown in FIGS. 3 and 4, the pipe 30 is formed with a plurality of injection ports 30a ... 30a in the longitudinal direction and the circumferential direction, and the mold fitting is performed from each of these injection ports 30a. The fluid is ejected into the hole 14a and toward the inner peripheral surface of the fitting hole 14a. Further, the die case 22 and the pressure receiving member 24 constituting the die 15 are formed with a flow hole 15a through which a fluid flows, and the die block 14 has a discharge groove 14d for discharging the fluid to the outside and a machine base. Communication ports 14e, 14e communicating with the fluid discharge ports 12a, 12a formed in 12 are formed, respectively.

According to the above configuration, after the mold 15 is taken out from the mold fitting hole 14a in the die block 14, the fluid is supplied into the pipe 30 to form the fluid in the pipe 30. 30a from the plurality of injection ports 30a ... 30a toward the inner peripheral surface of the mold fitting hole 14a with good directivity, whereby the inner peripheral surface of the mold fitting hole 14a is cleaned. The fine metal powder and the like adhering to the portion is automatically and surely removed, and the fluid after cleaning the inner peripheral surface of the mold fitting hole 14a is formed in the die block 14 in the discharge groove. 14d and a communication port 14e communicating with the discharge port 12a of the machine base 12 are discharged to the outside of the machine.

Further, when a fluid is supplied when the mold 15 is put into and taken out of the mold fitting hole 14a, the inside of the mold 15 is exposed through the surface of the mold 15 and the flow hole 15a. The fluid is supplied to the mold, whereby the metal powder and the like adhering to the surface and the inside of the mold 15 are effectively removed and discharged to the outside of the machine.

Next, an embodiment of the cleaning apparatus according to the second invention will be described with reference to FIGS.

The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

In the second embodiment, as shown in FIG. 5, a mold (not shown) is taken out from the mold fitting hole 14a formed in the die block 14, and then the fitting hole 14a is inserted into the fitting hole 14a. A cleaning cartridge 40 that is inserted into and removed from the cartridge cartridge 40 is provided. The cleaning cartridge 40 includes a cartridge body 41 and bearings 42a and 42b on a shaft portion 41a integrally formed at the rear end of the cartridge body 41. The cleaning member 43 is rotatably supported via a casing 43a of the cleaning member 43. The casing 43a is composed of, for example, a buff member or a brush which is conventionally used for buff polishing, and is fitted into the mold. A cleaning body 43b that contacts and rotates with the inner peripheral surface of the joint hole 14a is fixed, and a plurality of turbine blades 43c ... 43c are formed integrally with the casing 43a. Then, as shown in an enlarged view in FIG. 6, a pipe 30 in which compressed air is supplied through a fluid supply nozzle 32 to a groove 14b formed in the die block 14 similar to the first embodiment. 30a are arranged, and compressed air is blown toward the turbine blades 43c from a plurality of injection ports 30a ... 30a formed in this pipe.

An engaging recess 41b is formed at the tip of the cartridge body 41, and a predetermined tool (not shown) is engaged with the engaging recess 41b to allow the cartridge body 41 to be engaged. Is to be put in and taken out from the mold fitting hole 14a. Further, in the die block 14, as in the first embodiment, a discharge groove 14d for discharging compressed air to the outside and a communication port 14e for communicating with the discharge ports 12a, 12a provided at predetermined positions of the machine base 12, 14e are formed respectively.

According to the above configuration, as shown in FIG. 5, the cleaning cartridge 40 is inserted into the die fitting hole 14a of the die block 14, and the main body 41 of the cartridge 40 is inserted into the die fitting hole 14a. The compressed air is fed into and out of the pipe 30, and the compressed air is supplied to the turbine blades 43c of the cleaning member 43 from the plurality of injection ports 30a ... 30a formed in the pipe 30. As a result, the cleaning member 43b of the cleaning member 43 comes into contact with the inner peripheral surface of the mold fitting hole 14a and rotates, whereby the inner peripheral surface of the fitting hole 14a is rotated. The fine metal powder, etc. attached to the surface will be removed automatically and reliably.

Particularly, according to the second embodiment, by supplying the cleaning oil having a predetermined pressure in place of the compressed air into the pipe 30, in addition to the cleaning effect of the cleaning body 43b of the cleaning member 43, Since the cleaning effect of the cleaning oil is added, the fine metal powder or the like attached to the inner peripheral surface of the mold fitting hole 14a can be more effectively removed.

7 and 8 show an embodiment of the cleaning apparatus according to the third invention, and in this embodiment also, the same components as those in the first and second embodiments have the same reference numerals. The description is omitted.

In the third embodiment, a tool changing station (e) is formed on the side of the machine base 12 of the forging machine 11, and the machine base 12 of the machine base 12 is the same as in the first embodiment. Tools such as a plurality of dies 15 fitted in a die block 14 fixed at a fixed position, or a plurality of punches (not shown) arranged facing each of these dies 15 are automatically replaced. An automatic tool changer 50 is provided which is designed to be capable. The tool changing device 50 has the same structure as the automatic tool changing system of the multi-stage press forming machine disclosed in, for example, Japanese Utility Model Laid-Open No. 3-116239, in which both ends are fixed to a pair of columns 51, 51. A transport rail 52 that extends from above the forging machine 11 to above the tool exchange station (e), and a traveling body 54 that is reciprocally movable on the transport rail 52 by being driven by a drive motor 53. And a carrier 56 is attached to the tip of a piston rod 55a of a cylinder 55 fixed to the traveling body 54, and a tool such as the die 15 or a punch is attached to the carrier 56. A mountable tool stocker 57 is detachably attached by attaching / detaching means 58, 58 such as a hydraulic cylinder. Further, the carrier 56 is provided with engaging members 59 ... 59 for each tool that engages with the tool such as the die 15 or the punch, and the tool such as the die 15 or the punch is transferred from the press forming machine. Drive means 59a ... 59a, which are hydraulic cylinders or the like for each engaging member 59 for driving the engaging member 59 so as to be detached or attached to the molding machine, are attached.

Then, in this embodiment, as shown in FIG. 8, as in the first and second embodiments, the cleaning process is carried out with respect to the mold fitting hole 14a formed in the die block 14. A cleaning cartridge 60 is provided, and a rechargeable motor 61 is inserted into a mounting hole 60a formed in the cleaning cartridge 60 and fixed by a fixing plate 62, and the rotation of the motor 61 A rotating brush 63 that rotates in contact with the inner peripheral surface of the mold fitting hole 14a is inserted into the shaft 61a, and the rotating brush 63 is fixed by a nut 64 screwed to the shaft end of the rotating shaft 61a. So as to rotate integrally with the rotary shaft 61a.

Further, the cleaning cartridge 60 has a hole 60 b for turning on and off the switch 61 b provided on the motor 61, and the cartridge 60 has the above-mentioned hole at the tip thereof. An engagement recess 60c with which the engagement member 59 engages is formed.

The cleaning cartridge 60 is placed on the tool stocker 57 and conveyed by the carrier 56.

According to the above-mentioned configuration, as shown in FIG. 8, the tool stocker 57 on which the cleaning cartridge 60 is placed is conveyed to the front position of the die block 14 by the conveying body 56 and is provided on the die block 14. The tool stocker 57 is engaged with the determined positioning stopper 65 for positioning, and the cleaning cartridge 60 is moved into and out of the mold fitting hole 14a by the drive member 59. The rotating brush 63 provided and rotationally driven by the motor 61 comes into contact with the inner peripheral surface of the mold fitting hole 14a and rotates, so that fine metal powder adhered to the inner peripheral surface of the fitting hole 14a is generated. It will be removed automatically and reliably.

In particular, according to the third embodiment, the tool stocker 57, on which the cleaning cartridge 60 can be placed, moves the cleaning cartridge 60 into and out of the mold fitting hole 14a by the carrier 56. Engagement provided on the carrier 56 while being transported between a possible set position and a tool exchange station (e) near the set position, and the tool stocker 57 being transported to the set position. The cleaning cartridge 60 is automatically taken in and out of the mold fitting hole 14a by the member 59, which makes it possible to fully automate the cleaning of the mold fitting hole 14a. The workability can be further improved.

FIG. 9 is an enlarged cross-sectional view of the mounting portion of the punch 18 on the ram 17 side, in which each punch 18 is fixed to the front surface of the ram 17 by the mounting bolts 70, 70. The punch 18 is fitted and fixed in the punch fitting hole 18a formed in the ram 17. However, after the punch 18 is removed from the punch fitting hole 18a, the same construction as in the second and third embodiments is provided. By inserting / removing the cleaning cartridge 40 or 60 into / from the punch fitting hole 18a, fine metal powder adhered to the inner peripheral surface of the punch fitting hole 18a is automatically and surely removed. Will be done. Further, as in the third embodiment, by using the tool stocker 57, the cleaning cartridge 40 or 60 is automatically taken in and out of the punch fitting hole 18a, whereby the punch fitting is carried out. The cleaning of the joint hole 18a can be fully automated, and the workability thereof can be further improved.

[0039]

[Effect of device]

 As described above, according to the first aspect, the fluid supplied to the fluid supply passage is ejected from the ejection port toward the inner peripheral surface of the fitting hole on the machine base side or the ram side with good directivity. As a result, the fine metal powder attached to the inner peripheral surface of the fitting hole, that is, the mating surface with the die or punch can be automatically and surely removed.

Further, according to the second aspect, the fluid supplied to the fluid supply passage is ejected from the ejection port toward the blade integrally formed with the cleaning member with good directivity, whereby the cleaning unit is cleaned. The material comes into contact with the inner peripheral surface of the fitting hole on the machine base side or the ram side and rotates, whereby the fine metal powder adhered to the inner peripheral surface can be automatically and surely removed.

Further, according to the third aspect, since the cleaning member rotated by the driving means is provided at the end portion of the main body inserted into the fitting hole on the machine base side or the ram side, the main body is referred to as above. When the cleaning member comes into contact with the inner peripheral surface of the fitting hole and rotates by moving the cleaning member into and out of the fitting hole, the fine metal powder adhering to the inner peripheral surface can only automatically. It will surely be removed.

Furthermore, according to the fourth aspect, the stocker on which the main body provided with the cleaning member and the rotation driving means for rotating the cleaning member can be mounted is inserted into the mold fitting hole by the carrier. The main body is conveyed between a set position where the main body can be put in and taken out and a retracted position near the set position, and the main body is moved to the machine base side by the drive means provided in the conveyer while the stocker is conveyed to the set position. It will be put in and taken out from the fitting hole on the ram side, and this will fully automate the cleaning of the inner peripheral surface after taking out the die and punch from the fitting hole. Workability will be further improved.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a main part of a multi-stage forging machine equipped with a cleaning device for a forging machine according to the present invention.

FIG. 2 is a partially enlarged front view of a die block provided with a cleaning device.

3 is a cross-sectional view of a die block showing the configuration of the cleaning device as seen from the line AA in FIG.

FIG. 4 is an enlarged cross-sectional view of a main part viewed from the line BB in FIG.

FIG. 5 is a sectional view of a die block showing a configuration of a cleaning device according to a second invention.

6 is a partially enlarged cross-sectional view of the cleaning device according to the second aspect of the invention as seen from the line CC in FIG.

FIG. 7 is an overall schematic diagram showing a configuration of a multi-stage press forming machine equipped with a cleaning device according to the third and fourth inventions and the periphery thereof.

FIG. 8 is a sectional view of a die block showing a configuration of a cleaning device according to third and fourth inventions.

FIG. 9 is an enlarged sectional view of a punch mounting portion on the ram side.

FIG. 10 is a vertical cross-sectional view of a conventional mold device.

[Explanation of symbols]

 11 Press Forming Machine 12 Machine Stand 14 Die Block 14a Mold Fitting Hole 14b Groove 15 Mold 18 Punch 18a Punch Fitting Hole 30 Pipe 30a Injection Port 40, 60 Cleaning Cartridge 41 Cartridge Body 43 Cleaning Member 56 Conveyor 57 Tool Stocker 61 Motor 63 Rotating brush

Claims (4)

[Scope of utility model registration request] 1. A press forging a material between a die fitted in a fitting hole on a machine base and a punch fitted in a fitting hole on a ram moving back and forth toward the die. A cleaning device for a molding machine, wherein a fluid supply passage for supplying a fluid is formed around the fitting hole on the machine base side or the ram side, and the fluid supply passage is provided on the inner peripheral surface of the fitting hole. A cleaning device for a forging machine, wherein an injection port for spraying a fluid is formed. 2. A press forging a material between a die fitted in a fitting hole on a machine base and a punch fitted in a fitting hole on a ram that moves back and forth toward the die. A cleaning device for a molding machine, wherein a main body is inserted into the fitting hole on the machine base side or the ram side and is inserted into and taken out from the fitting hole, and the fitting hole provided at an end of the main body. A cleaning member that rotates in contact with the inner peripheral surface, a fluid supply passage for supplying a fluid is formed around the fitting hole on the machine base side or the ram side, and the cleaning member is provided in the fluid supply passage. A cleaning device for a forging machine, characterized in that an injection port for spraying a fluid is formed toward a blade integrally provided with the cleaning member so as to rotate. 3. A press forging a material between a die fitted in a fitting hole on a machine base and a punch fitted in a fitting hole on a ram that moves back and forth toward the die. A cleaning device for a molding machine, wherein a main body is inserted into the fitting hole on the machine base side or the ram side and is inserted into and taken out from the fitting hole, and the fitting hole provided at an end of the main body. A cleaning device for a forging machine, comprising: a cleaning member that rotates in contact with an inner peripheral surface; and a rotation driving unit that is installed in the main body and rotates the cleaning member. 4. A press forging a material between a die fitted in a fitting hole on a machine base and a punch fitted in a fitting hole on a ram that moves back and forth toward the die. A cleaning device for a molding machine, wherein a main body is inserted into the fitting hole on the machine base side or the ram side and is inserted into and taken out from the fitting hole, and the fitting hole provided at an end of the main body. A stocker having a cleaning member that rotates in contact with the inner peripheral surface and a rotation drive unit that is installed in the main body and rotates the cleaning member, and a stocker on which the main body can be placed, and the stocker in the fitting hole. On the other hand, the main body is conveyed by engaging the main body, which is conveyed between the set position where the main body can be taken in and out and the retracted position in the vicinity of the set position, and the main body provided on the transfer body and placed on the stocker It is characterized in that a driving means for putting in and out the fitting hole is provided. Cleaner for press forming machine to be collected.