Punching device in thermal forming die

Abstract

The utility model discloses a punching device in a thermal forming die, which comprises an upper die, a lower die, an upper die insert, a lower die insert, a hydraulic cylinder, a stamping component and a concave die sleeve, the upper die insert and the lower die insert are respectively arranged on adjacent sides of the upper die and the lower die, the hydraulic cylinder is arranged in the upper die, and the stamping component is arranged in the concave die sleeve. The extending end of the hydraulic cylinder is fixed to the stamping assembly, and a through hole allowing the stamping end of the stamping assembly to pass through is formed in the upper die insert. According to the punching device in the thermal forming die, the hydraulic cylinder and the punching assembly are arranged in the upper die, and the through hole, the punching hole and the female die sleeve which are matched with the punching assembly are arranged in the upper die insert and the lower die insert, so that after a part is formed to the bottom and at the beginning stage of pressure maintaining, the hydraulic cylinder pushes the punching assembly; the stamping end of the stamping assembly is driven by the hydraulic cylinder to punch a part with a female die sleeve matched with the stamping end on the lower die insert, so that stamping forming and in-die punching are integrated into one die.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of hot forming die hole punching device, belong to the forming die technical field. BACKGROUND

[0002] In passenger vehicle collision, due to the less energy-absorbing components of the vehicle body side and the too close distance between the door and the member, the damage to the driver and passenger is large in side collision. The application of the door impact beam can improve the stiffness of the door and reduce deformation and intrusion of the occupant compartment by the collision object when side collision occurs, thereby reducing the injury to the driver and passenger.

[0003] At present, the mainstream of the door impact beam is hot stamping forming of high-strength steel, that is, hot forming. The conventional forming process divides stamping forming and punching into two processes, and the punching process is roughly divided into two categories. One category uses laser cutting to trim and punch, which requires high investment in factory equipment and site, and the secondary cutting needs to add a draw part positioning for the laser cutting process, which reduces the utilization rate of the plate. The positioning accuracy error of the secondary positioning easily causes the qualified rate to decrease, and the additional cutting process also increases the personnel cost. The other category uses a punching die to complete the process. Since the strength of the part after hot stamping forming reaches 1300-1500 Mpa, the die block is severely worn, and the secondary cutting positioning and the additional process also increase the personnel cost.

[0004] Therefore, to cancel the cutting process in the existing hot forming part production process and reduce the investment in production equipment and subsequent equipment maintenance cost, a hot forming die hole punching device is urgently needed. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the deficiencies in the prior art and providing a hot forming die hole punching device. By arranging a hydraulic cylinder and a stamping assembly in the upper die, and arranging through holes, stamping holes and die sleeves matched with the stamping assembly in the upper die insert and the lower die insert, the stamping assembly is pushed by the hydraulic cylinder after the part is formed to the bottom, and the stamping end of the stamping assembly is driven by the hydraulic cylinder to cut the part with the die sleeve matched with it on the lower die insert, so that stamping forming and in-die punching are integrated into one die, laser cutting process is reduced, equipment investment is effectively reduced, part production rhythm is improved, and production personnel cost is reduced.

[0006] To achieve the above-mentioned purpose and solve the above-mentioned technical problems, the utility model is implemented by using the following technical scheme:

[0007] A hot forming die hole punching device includes an upper die, a lower die, an upper die insert, a lower die insert, a hydraulic cylinder, a stamping assembly and a die sleeve, wherein,

[0008] The upper die insert and the lower die insert are respectively installed on the adjacent sides of the upper die and the lower die, the hydraulic cylinder is installed in the upper die, the extending end of the hydraulic cylinder is fixed with the stamping assembly, and the through hole is formed in the upper die insert and used for allowing the stamping end of the stamping assembly to pass through.

[0009] The stamping hole is formed in the lower die insert and used for allowing the stamping end of the stamping assembly to pass through, and the die sleeve is matched with the stamping end of the stamping assembly and is installed in the stamping hole.

[0010] Further, the stamping assembly comprises a punch column and a punch.

[0011] The punch column is fixed with the extending end of the hydraulic cylinder, the punch is installed at the end of the punch column away from the hydraulic cylinder, the movable groove matched with the punch column is formed in the upper die, and the movable groove is communicated with the through hole.

[0012] Further, the guide sleeve is fixed in the movable groove, and the punch column is sleeved with the guide sleeve.

[0013] Further, the oil pipe is communicated with the hydraulic cylinder at one end and is located outside the upper die at the other end.

[0014] Further, the waste chute is formed in the lower die and is communicated with the stamping hole.

[0015] Further, the hydraulic cylinder is installed in the upper die through the backing plate.

[0016] Further, the upper die seat is installed at the uppermost of the upper die.

[0017] Further, the lower die seat is installed at the lowermost of the lower die.

[0018] Compared with the prior art, the utility model has the beneficial effects that:

[0019] The punching device in the thermoforming die provided by the utility model is characterized in that the hydraulic cylinder and the stamping assembly are arranged in the upper die, the through hole, the stamping hole and the die sleeve matched with the stamping assembly are arranged in the upper die insert and the lower die insert, the stamping assembly is pushed by the hydraulic cylinder when the part is formed to the bottom and the pressure maintaining starts, the stamping end of the stamping assembly is driven by the hydraulic cylinder and is matched with the die sleeve on the lower die insert to punch the part, the stamping forming and the in-die punching are integrated into one die, the laser cutting process is reduced, the equipment investment is effectively reduced, the part production rhythm is improved, and the production personnel cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1It is the structure schematic view of the punching device in the hot forming die provided by the utility model.

[0021] Figure 2 It is Figure 1 The structure side view schematic diagram of the waste chute in the lower die.

[0022] In the figure: 1, upper die; 2, lower die; 3, upper die insert; 301, through hole; 4, lower die insert; 401, stamping hole; 5, hydraulic cylinder; 6, stamping assembly; 601, punch column; 602, punch; 603, guide sleeve; 7, concave die sleeve; 8, oil pipe; 9, waste chute; 10, backing plate; 11, upper die seat; 12, lower die seat. DETAILED DESCRIPTION

[0023] The utility model will be further described below in combination with the drawings. The following examples are only used to more clearly illustrate the technical scheme of the utility model, and cannot limit the protection scope of the utility model.

[0024] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0025] In the description of the utility model, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances. Example one

[0026] For example, Figure 1As shown, this embodiment provides a thermoforming in-mold punching device, including an upper die 1, a lower die 2, an upper die insert 3, a lower die insert 4, a hydraulic cylinder 5, a stamping assembly 6, and a die sleeve 7, wherein...

[0027] The upper die insert 3 and the lower die insert 4 are respectively installed on the adjacent side of the upper die 1 and the lower die 2. The hydraulic cylinder 5 is installed in the upper die 1. The extended end of the hydraulic cylinder 5 is fixed to the stamping assembly 6. The upper die insert 3 is provided with a through hole 301 for the stamping end of the stamping assembly 6 to pass through.

[0028] The lower die insert 4 has a punching hole 401 for the punching end of the stamping assembly 6 to pass through. The die sleeve 7 is adapted to the punching end of the stamping assembly 6 and is installed in the punching hole 401.

[0029] In the above technical solution, by setting a hydraulic cylinder 5 and a stamping component 6 in the upper mold 1, and setting through holes 301, stamping holes 401 and die sleeves 7 that cooperate with the stamping component 6 in the upper mold insert 3 and the lower mold insert 4, after the part is formed to the bottom, at the beginning of the pressure holding stage, the hydraulic cylinder 5 pushes the stamping component 6. The stamping end of the stamping component 6, driven by the hydraulic cylinder 5, punches the part with the die sleeve 7 that matches it on the lower mold insert 4, so as to integrate stamping and in-mold punching into one mold, which can reduce the laser cutting process, effectively reduce equipment investment, improve the production cycle of parts, and reduce production personnel costs. Example 2

[0030] like Figure 1 As shown, the thermoforming in-mold punching device provided in this embodiment differs from the thermoforming in-mold punching device provided in Embodiment 1 in that:

[0031] To achieve the cooperation between the stamping assembly 6 and the hydraulic cylinder 5, the stamping assembly 6 includes a punch column 601 and a punch 602, wherein,

[0032] The punch column 601 is fixed to the extended end of the hydraulic cylinder 5. The punch 602 is installed at the end of the punch column 601 away from the hydraulic cylinder 5. The upper mold 1 has a movable groove 101 adapted to the punch column 601. The movable groove 101 is connected to the through hole 301.

[0033] To position the punch column 601, a guide sleeve 603 is also included. The guide sleeve 603 is fixed in the movable groove 101, and the punch column 601 is sleeved with the guide sleeve 603. Graphite is also embedded in the guide sleeve 603. When the punch column 601 moves up and down relative to the guide sleeve 603, the graphite rubs against the punch column 601 to lubricate it. The graphite is evenly embedded on the side wall of the circular hole of the guide sleeve 603, that is, on the contact side with the punch column 601.

[0034] To provide power source for the hydraulic cylinder 5, also includes the oil pipe 8, one end of the oil pipe 8 is communicated with the hydraulic cylinder 5, the other end of the oil pipe 8 is located outside the upper die 1, and the oil pipe 8 is connected with the power supply outside the upper die 1.

[0035] To realize the discharge of waste in the punching process, also includes the waste chute 9, the waste chute 9 is opened in the lower die 2, and the waste chute 9 is communicated with the stamping hole 401, as shown in Figure 2 The waste chute 9 is installed at an angle in the lower die 2, so that the waste falls along the chute direction by gravity to the outside of the mold.

[0036] To facilitate the installation and maintenance of the hydraulic cylinder, also includes the pad plate 10, the hydraulic cylinder 5 is installed in the upper die 1 through the pad plate 10.

[0037] In order to bear and fix the shaped steel block and for installing and fixing various components, also includes the upper die seat 11 and the lower die seat 12, the upper die seat 11 is installed at the top of the upper die 1, and the lower die seat 12 is installed at the bottom of the lower die 2.

[0038] In summary, the hot forming die punching device provided by the embodiment, by designing the hydraulic cylinder 5 as a power source inside the forming die, the hydraulic cylinder 5 is connected with the punch column 601, the punch column 601 is guided and positioned by the self-lubricating guide sleeve 603, when the internal crystal organization of the part is not completely converted from austenite to martensite after the part is completed, the hydraulic cylinder 5 ejects the punch 602 to punch the part. The device has stable structure, is convenient to install, can integrate the stamping and in-mold punching process into one die, can reduce the laser cutting process, effectively reduces the equipment investment, improves the part production rhythm, and reduces the production personnel cost.

[0039] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and deformations can be made, and these improvements and deformations should be considered as the protection scope of the present application.

Claims

1. A hot forming in-mold piercing device, characterized by, Including upper die (1), lower die (2), upper die insert (3), lower die insert (4), hydraulic cylinder (5), stamping assembly (6) and concave die sleeve (7), wherein, The upper die insert (3) and the lower die insert (4) are respectively installed on the adjacent side of the upper die (1) and the lower die (2), the hydraulic cylinder (5) is installed in the upper die (1), the extension end of the hydraulic cylinder (5) is fixed with the stamping assembly (6), the upper die insert (3) is provided with a through hole (301) for the stamping end of the stamping assembly (6) to pass through; The lower die insert (4) is provided with a stamping hole (401) for the stamping end of the stamping assembly (6) to pass through, the concave die sleeve (7) is matched with the stamping end of the stamping assembly (6), and the concave die sleeve (7) is installed in the stamping hole (401).

2. The hot forming in-die piercing apparatus of claim 1, wherein, The stamping assembly (6) comprises a punch column (601) and a punch (602), wherein, The punch column (601) is fixed with the extension end of the hydraulic cylinder (5), the punch (602) is installed at the end of the punch column (601) away from the hydraulic cylinder (5), the upper die (1) is provided with a movable groove (101) matched with the punch column (601), and the movable groove (101) is communicated with the through hole (301).

3. The hot forming in-die piercing apparatus of claim 2, wherein, Further comprising a guide sleeve (603), the guide sleeve (603) is fixed in the movable groove (101), and the punch column (601) is sleeved with the guide sleeve (603).

4. The hot forming in-die piercing apparatus of claim 1, wherein, Further comprising an oil pipe (8), one end of the oil pipe (8) is communicated with the hydraulic cylinder (5), and the other end of the oil pipe (8) is located outside the upper die (1).

5. The hot forming in-die piercing apparatus of claim 1, wherein, Further comprising a waste chute (9), the waste chute (9) is provided in the lower die (2), and the waste chute (9) is communicated with the stamping hole (401).

6. The hot forming in-die piercing apparatus of claim 1, wherein, Further comprising a backing plate (10), the hydraulic cylinder (5) is installed in the upper die (1) through the backing plate (10).

7. The hot forming in-die piercing apparatus of claim 1, wherein, Further comprising an upper die seat (11), the upper die seat (11) is installed at the top of the upper die (1).

8. The hot forming in-die piercing apparatus of claim 1, wherein, Further comprising a lower die seat (12), the lower die seat (12) is installed at the bottom of the lower die (2). Further comprising an upper die seat (11), the upper die seat (11) is installed at the top of the upper die (1). Further comprising a lower die seat (12), the lower die seat (12) is installed at the bottom of the lower die (2).

Images