Special-shaped inner side inverted buckle forming hot pressing die

Abstract

The utility model discloses a special-shaped inner side back-off forming hot-pressing die which comprises a front die structure, a rear die structure, a carrier and a unit hot-pressing mechanism, the carrier is connected to the front die structure, the front die structure is connected with the rear die structure, the rear die structure can move linearly relative to the front die structure, and the unit hot-pressing mechanism is connected with the carrier. Each unit hot-pressing mechanism comprises a hot-pressing block, an air cylinder, a sliding block, a sliding rail and a heater, the air cylinder and the sliding rail are both connected with the rear mold structure, the air cylinder is connected with the hot-pressing block, the sliding block is connected with the hot-pressing block, the sliding block is arranged on the sliding rail in a sliding mode, the heater is embedded in the hot-pressing block, the carrier is provided with a through hole, and the through hole is communicated with the hot-pressing block. The hot pressing block is provided with an insertion part which can be inserted into the through hole. The special-shaped hole inner wall hot-pressing die can be effectively suitable for hot-pressing of the inner wall of a hole with a product, cannot be normally opened and closed due to a reverse buckling position in the hot-pressing process, can be suitable for hot-pressing machining of the inner wall of the special-shaped hole, and is high in working reliability.

Description

Technical Field

[0001] The utility model relates to the field of mold design, in particular to a special-shaped inner side undercut molding hot pressing mold. Background Art

[0002] Hot press forming is a process that uses heat and pressure to change the shape of a product. Hot press forming often requires the use of a hot press mold, which typically consists of a front mold and a back mold. The back mold is movable relative to the front mold. The product to be hot-pressed is placed on the front mold, and the back mold is pressed against the product in the front mold to heat-press the product.

[0003] In actual processing, hot pressing processing requirements are diverse. Sometimes, some products have irregularly shaped holes, and during processing, the inner wall of the irregularly shaped hole needs to be hot pressed to change the shape of the inner part. Under such processing requirements, if only conventional hot pressing dies are used, the irregularly shaped hole will often form an undercut, resulting in the hot pressing mold being unable to open normally. In other words, conventional hot pressing dies cannot meet the hot pressing requirements of such products. Utility Model Content

[0004] The purpose of the utility model is to provide a special-shaped inner undercut forming hot pressing die, which can solve one or more of the above problems.

[0005] According to one aspect of the present invention, a special-shaped inner side undercut molding hot pressing die is provided, comprising a front die structure, a rear die structure, a carrier and a unit hot pressing mechanism.

[0006] The carrier is connected to the front mold structure, the front mold structure is connected to the rear mold structure, and the rear mold structure can move linearly relative to the front mold structure.

[0007] The unit hot pressing mechanism includes a hot pressing block, a cylinder, a slider, a slide rail and a heater. The cylinder and the slide rail are both connected to the rear mold structure. The cylinder is connected to the hot pressing block, and the slider is connected to the hot pressing block. The slider is slidably arranged on the slide rail, and the heater is embedded in the hot pressing block.

[0008] The carrier is provided with a through hole, and the hot pressing block is provided with an inserting portion, and the inserting portion can be inserted into the through hole.

[0009] The beneficial effects of the present invention are as follows: in the present invention, the carrier can be used to place a product having an inner wall of a hole that needs to be hot-pressed, and the inner wall of the hole of the product can be attached to the inner wall of the through-hole. When closing the mold, the front mold structure and the rear mold structure can first be brought close to each other, and the insert portion can be inserted into the through-hole. Then, through the operation of the cylinder, the hot pressing block can be moved, so that the insert portion and the inner wall of the hole of the product set on the inner wall of the through-hole are attached to each other, so as to perform hot pressing on the inner wall of the hole of the product. When opening the mold, the hot pressing block can be driven to move by the cylinder first, so that the insert portion is no longer attached to the inner wall of the hole of the product. Then, the mold is opened by moving the front mold structure and the rear mold structure. Therefore, the present invention can be effectively adapted to hot pressing of the inner wall of the hole of the product. When hot pressing is used, the mold opening and closing will not be unable to be normal due to the inverted position. It can be suitable for hot pressing of the inner wall of the special-shaped hole and has high working reliability.

[0010] In some embodiments, the top of the carrier is provided with a profiled surface, and the through hole is provided in the middle of the profiled surface. The provision of the profiled surface can better adapt to the use of special-shaped products.

[0011] In some embodiments, the front mold structure includes a bottom plate, a lower heat insulation plate, a lower plate and a support plate, and the bottom plate, the lower heat insulation plate, the lower plate and the support plate are connected in sequence from bottom to top, and the carrier is connected to the support plate.

[0012] In some embodiments, the rear mold structure includes a top plate, an upper heat insulation plate, and an upper plate, and the top plate, the upper heat insulation plate, and the upper plate are sequentially connected from top to bottom.

[0013] In some embodiments, the front mold structure includes guide posts, and the rear mold structure includes guide sleeves. Multiple guide posts and guide sleeves are provided. The guide posts are connected to the bottom plate, and the guide sleeves are embedded in the top plate. The multiple guide sleeves are slidably mounted on the guide posts in a one-to-one correspondence. The arrangement of the guide posts and guide sleeves can guide the relative movement of the top plate and the bottom plate, thereby ensuring the reliability of the relative movement between the two.

[0014] In some embodiments, the rear mold structure includes an upper stop post, and the front mold structure includes a lower stop post. The upper stop post is connected to the upper plate, and the lower stop post is connected to the lower plate, and the upper and lower stop posts can abut against each other. The lower and upper stop posts can serve as the limit positions when the front and rear mold structures move relative to each other and approach, preventing the front and rear mold structures from being too close together and causing damage to the other structure.

[0015] In some embodiments, the unit hot pressing mechanism includes a stopper connected to the rear mold structure and facing one side of the hot pressing block. The stopper serves as a limit for the hot pressing block's movement in its direction, preventing damage to other structures caused by excessive movement of the hot pressing block.

[0016] In some embodiments, there are multiple unit hot pressing mechanisms, and the multiple unit hot pressing mechanisms are all connected to the rear mold structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a hot pressing die for forming a special-shaped inner side undercut according to an embodiment of the present invention.

[0018] Figure 2 This is a front view of a structural schematic diagram of a hot pressing die for forming a special-shaped inner side undercut according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic structural diagram of a carrier of a hot pressing die for forming a special-shaped inner side undercut according to an embodiment of the present invention.

[0020] Figure 4 It is a structural schematic diagram of a unit hot pressing mechanism of a special-shaped inner side undercut forming hot pressing die according to one embodiment of the present invention.

[0021] In the figure: 1. front mold structure, 2. rear mold structure, 3. carrier, 4. unit hot pressing mechanism, 11. bottom plate, 12. lower heat insulation plate, 13. lower plate, 14. support plate, 15. guide column, 16. lower stop column, 21. top plate, 22. upper heat insulation plate, 23. upper plate, 24. guide sleeve, 25. upper stop column, 31. special-shaped surface, 32. through hole, 41. hot pressing block, 42. cylinder, 43. slider, 44. slide rail, 45. heater, 46. limit block, 411. insertion part. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The utility model discloses a special-shaped inner side undercut molding hot pressing mold, which includes a front mold structure 1, a rear mold structure 2, a carrier 3 and a unit hot pressing mechanism 4.

[0024] The front mold structure 1 includes a base plate 11, a lower heat shield 12, a lower plate 13, and a support plate 14. The base plate 11, the lower heat shield 12, the lower plate 13, and the support plate 14 are fixedly connected in sequence from bottom to top by bolts. The support plate 14 can be provided with positioning posts that can pass through the carrier 3 to secure the carrier 3 to the support plate 14.

[0025] The rear mold structure 2 includes a top plate 21, an upper heat insulation plate 22 and an upper plate 23. The top plate 21, the upper heat insulation plate 22 and the upper plate 23 are fixedly connected by bolts in sequence from top to bottom.

[0026] The front mold structure 1 further includes a guide post 15, and the rear mold structure 2 further includes a guide sleeve 24. There can be multiple guide posts 15 and guide sleeves 24. In this embodiment, preferably, there are four guide posts 15 and guide sleeves 24. The four guide posts 15 are arranged in parallel, and one end of each of the four guide posts 15 is fixedly embedded in the bottom plate 11, thereby making the guide posts 15 fixedly connected to the bottom plate 11. The four guide sleeves 24 are fixedly embedded in the top plate 21, and the four guide sleeves 24 are slidably sleeved on the four guide posts 15 in a one-to-one correspondence.

[0027] The arrangement of the guide post 15 and the guide sleeve 24 enables the front mold structure 1 and the rear mold structure 2 to be connected, and the rear mold structure 2 can move linearly along the guide post 15 relative to the front mold structure 1 .

[0028] The rear mold structure 2 further includes an upper stop post 25, and the front mold structure 1 further includes a lower stop post 16. One end of the upper stop post 25 is fixedly connected to the bottom of the upper plate 23 by bolts, and the lower stop post 16 is connected to the lower plate 13. As the front mold structure 1 and the rear mold structure 2 move relative to each other, the upper stop post 25 and the lower stop post 16 can abut against each other.

[0029] There can be multiple unit hot pressing mechanisms 4. In this embodiment, there are preferably two unit hot pressing mechanisms 4. In each unit hot pressing mechanism 4, the unit hot pressing mechanism 4 includes a hot pressing block 41, a cylinder 42, a slider 43, a slide rail 44 and a heater 45. The cylinder body of the cylinder 42 is fixedly connected to the upper plate 23 of the rear mold structure 2 through a connecting block, the piston rod of the cylinder 42 and one side of the hot pressing block 41 are fixedly connected by bolts, the slider 43 is connected to the top of the hot pressing block 41 by bolts, the slide rail 44 is fixedly connected to the upper plate 23 of the rear mold structure 2 by bolts, the slider 43 can be slidably mounted on the slide rail 44, there can be multiple heaters 45, and the heater 45 can preferably be an electric heater. Multiple heaters 45 are fixedly embedded in the hot pressing block 41.

[0030] The slide rails 44 are arranged perpendicular to the guide pillars 15 , and the slide rails 44 of the two unit hot pressing mechanisms 4 are arranged in parallel.

[0031] The unit hot pressing mechanism 4 also includes a limit block 46. In each unit hot pressing mechanism 4, there can be multiple limit blocks 46, and the tops of the multiple limit blocks 46 are fixedly connected to the upper plate 23 of the rear mold structure 2 by bolts. After being set, the limit block 46 is opposite to one side of the hot pressing block 41. The limit block 46 can serve as the limit position for the hot pressing block 41 to move toward the direction where the limit block 46 is located. That is, when the hot pressing block 41 moves to contact the limit block 46, the limit block 46 can prevent the hot pressing block 41 from continuing to move in the direction where the limit block 46 is located.

[0032] The top of the carrier 3 is provided with a special-shaped surface 31, the shape of which can adapt to the shape of the product to be processed, and a through hole 32 is provided in the middle of the special-shaped surface 31, and the hot pressing block 41 is provided with an insertion part 411, and a hot pressing position is provided on the insertion part 411, and the hot pressing position can match the shape of the inner wall of the hole of the product to be processed, and when necessary, the insertion part 411 can be inserted into the through hole 32.

[0033] This special-shaped inner side undercut forming hot pressing die can be used to process the inner wall of the hole of the product. When in use, the top plate 21 can be connected to an external power device such as a cylinder, and the product to be processed can be placed on the carrier 3, and the hole of the product to be processed and the through hole 32 can be made to correspond, so that the inner wall of the hole of the product can be in contact with the inner wall of the through hole 32.

[0034] When closing the mold, the external power device can drive the top plate 21 to move downward along the guide column 15 until the upper stop 25 and the lower stop column 16 abut against each other. At this time, the insertion part 411 of each unit hot pressing mechanism 4 can be inserted into the through hole 32. After that, the cylinder 42 of each unit hot pressing mechanism 4 can drive the hot pressing block 41 to move, so that the insertion part 411 of the hot pressing block 41 is in contact with the inner wall of the hole of the product. At the same time, the heater 45 is started, so that the insertion part 411 can hot-press the inner wall of the hole of the product to ensure that the inner wall of the hole of the product can be formed into the shape required by the user.

[0035] When the mold is opened, the cylinder 42 of each unit hot pressing mechanism 4 can drive the hot pressing block 41 to move, so that the insertion part 411 of the hot pressing block 41 is fully separated from the inner wall of the product hole. Then the external power device can drive the top plate 21 to move up along the guide column 15, so that the insertion part 411 of each unit hot pressing mechanism 4 can be detached from the through hole 32, completing the mold opening, which can effectively avoid the formation of undercuts on the inner wall of the product hole, resulting in the inability of the hot pressing mold to be effectively opened.

[0036] The above descriptions are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A hot pressing die for forming a special-shaped inner undercut, characterized in that: Including front mold structure, back mold structure, carrier and unit hot pressing mechanism, The carrier is connected to the front mold structure, the front mold structure is connected to the rear mold structure, and the rear mold structure can move linearly relative to the front mold structure. The unit hot pressing mechanism includes a hot pressing block, a cylinder, a slider, a slide rail and a heater. The cylinder and the slide rail are both connected to the rear mold structure. The cylinder is connected to the hot pressing block, and the slider is connected to the hot pressing block. The slider is slidably arranged on the slide rail, and the heater is embedded in the hot pressing block. The carrier is provided with a through hole, and the hot pressing block is provided with an inserting portion, and the inserting portion can be inserted into the through hole.

2. The hot pressing die for forming a special-shaped inner undercut according to claim 1, characterized in that: The top of the carrier is provided with a special-shaped surface, and the through hole is provided in the middle of the special-shaped surface.

3. The hot pressing die for forming a special-shaped inner undercut according to claim 1, characterized in that: The front mold structure includes a bottom plate, a lower heat insulation plate, a lower plate and a supporting plate. The bottom plate, the lower heat insulation plate, the lower plate and the supporting plate are connected in sequence from bottom to top, and the carrier is connected to the supporting plate.

4. The special-shaped inner undercut hot pressing die according to claim 3, characterized in that: The rear mold structure includes a top plate, an upper heat insulation plate and an upper plate, and the top plate, the upper heat insulation plate and the upper plate are connected in sequence from top to bottom.

5. The hot pressing die for forming a special-shaped inner undercut according to claim 4, characterized in that: The front mold structure includes a guide column, and the rear mold structure includes a guide sleeve. There are multiple guide columns and guide sleeves. The guide columns are connected to the bottom plate, and the guide sleeves are embedded in the top plate. The multiple guide sleeves are slidably mounted on the guide columns in a one-to-one correspondence.

6. The special-shaped inner undercut hot pressing die according to claim 4, characterized in that: The rear mold structure includes an upper stop support, and the front mold structure includes a lower stop support. The upper stop support is connected to the upper plate, and the lower stop support is connected to the lower plate. The upper stop support and the lower stop support can abut against each other.

7. The special-shaped inner undercut hot pressing die according to claim 1, characterized in that: The unit hot pressing mechanism includes a limit block, which is connected to the rear mold structure and is opposite to one side of the hot pressing block.

8. The special-shaped inner undercut molding hot pressing die according to claim 1, characterized in that: There are multiple unit hot pressing mechanisms, and all of the multiple unit hot pressing mechanisms are connected to the rear mold structure.

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