Die capable of rapidly and safely replacing pitched roof

Abstract

The utility model relates to the technical field of dies, in particular to a die capable of quickly and safely replacing an inclined ejector, which comprises a lower die module, the lower die module is provided with a locking structure matched with an inclined ejector column, and the locking structure comprises a locking rod arranged transversely and a driving structure for driving the locking rod to move transversely to get close to or get away from the inclined ejector column. A locking long groove allowing the locking rod to be inserted is formed in the inclined ejection column; after mold closing, the locking structure works, the driving rod rotates, through meshing transmission of the driving gear and the transmission gear, the locking rod is in transmission fit with the internal thread structure of the transmission gear through the external thread structure and can transversely move towards the inclined ejection column, the inner end of the inclined ejection column is inserted into the locking long groove, and when a product is demolded, the inclined ejection column can be ejected upwards; when the product is separated from the lower die cavity, even if the product is connected with the top of the inclined ejection column, the inclined ejection column is still positioned in the guide chute under the action of the locking rod and cannot be separated from the product, so that the position of the inclined ejection column is stable, and the inclined ejection column is not easy to deviate.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a mold for quick and safe replacement of the inclined ejector. Background Technology

[0002] Injection molding is a common processing method used in the mass production of certain complex-shaped parts. Specifically, it refers to injecting molten plastic into an injection mold under high pressure by an injection molding machine. After cooling and solidification, the molded part is obtained. Then, the mold is opened and the ejection mechanism ejects the injection molded part.

[0003] With the continuous development of the injection molding industry, many items used in daily life have begun to adopt injection molding. As the structure of injection molded parts becomes increasingly complex, the design requirements for injection molds are also becoming higher and higher.

[0004] During demolding, the product located in the lower mold cavity will detach upwards. Since the injection-molded product will be connected to the angled ejector pins, the product can easily take the angled ejector pins with it during demolding, causing the angled ejector pins to shift position. Utility Model Content

[0005] The purpose of this invention is to provide a mold for quickly and safely changing the inclined ejector pin, addressing the shortcomings of existing technologies.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A mold for quick and safe replacement of inclined ejectors includes a lower mold assembly, which includes a lower template and a lower mold core mounted on top of the lower template. The lower mold core has a lower mold cavity, and the lower template has a guide groove. An inclined ejector pin is slidably mounted on the guide groove, and the top of the inclined ejector pin is connected to the lower mold cavity of the lower mold core. The lower mold assembly is characterized by having a locking structure that engages with the inclined ejector pin. The locking structure includes a horizontally arranged locking rod and a driving structure that moves the locking rod laterally towards or away from the inclined ejector pin. The inclined ejector pin has a locking groove for inserting the locking rod. The driving structure includes a driving rod parallel to the locking rod, a driving gear sleeved on the driving rod, and a transmission gear meshing with the driving gear on the locking rod. The transmission gear has an internal threaded hole that engages with the locking rod, and the locking rod has an external threaded structure that engages with the internal threaded hole.

[0008] Furthermore: the lower template is formed with a first drive hole for axial sliding of the locking rod, and a first drive groove for mounting the transmission gear is provided along the first drive hole, and the transmission gear is rotatably mounted in the first drive groove.

[0009] Furthermore: a protruding guide block is installed on the end wall of the first drive groove, and a concave annular groove is formed on the end face of the transmission gear, with the annular groove slidingly engaging with the guide block.

[0010] Furthermore: the first driving hole includes a first elongated hole and a second elongated hole that are coaxially connected, wherein the diameter of the first elongated hole is larger than the diameter of the second elongated hole, and a locking head is installed at the outer end of the locking rod, the locking head being formed with a fitting groove.

[0011] Furthermore: the inner end of the locking rod is formed with a concave sensing block, and the guide groove of the inclined top column is equipped with an infrared sensor that cooperates with the sensing block.

[0012] Furthermore: the lower template is formed with a second drive hole for the drive rod to rotate, and a second drive groove for mounting the drive gear is provided along the second drive hole. The drive gear is rotatably mounted in the second drive groove, and the first drive groove and the second drive groove are connected.

[0013] Furthermore, a rotating handle is installed at the outer end of the drive rod.

[0014] Furthermore: A lower mold support plate is installed below the lower mold template, and a demolding rod is installed on the lower mold support plate. The top of the demolding rod contacts the bottom of the inclined ejector column.

[0015] Furthermore: the lower mold module is equipped with a demolding mechanism that drives the lower mold support plate to move longitudinally. The demolding mechanism includes demolding guide seats located on both sides of the lower mold support plate. The demolding guide seats are equipped with longitudinally arranged lifting cylinders, and the driving end of the lifting cylinders is connected to the lower mold support plate.

[0016] The beneficial effects of this utility model are as follows: After the mold is closed, the locking structure works, the drive rod rotates, and through the meshing of the drive gear and the transmission gear, the locking rod is driven by the external thread structure and the internal thread structure of the transmission gear, allowing it to move laterally toward the inclined ejector. The inner end of the inclined ejector is inserted into the locking groove. When the product is demolded, the inclined ejector will be pushed upward, and the product will detach from the lower mold cavity. Even if the product is connected to the top of the inclined ejector, the inclined ejector will still be located in the guide groove due to the action of the locking rod, and will not detach with the product, thus ensuring the stability of the inclined ejector position and preventing it from shifting. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the mold structure.

[0018] Figure 2 This is a cross-sectional structural diagram of the lower mold module.

[0019] Figure 3 for Figure 2 A magnified schematic diagram of a portion of the structure.

[0020] The reference numerals in the figures include:

[0021] 1-Lower mold module,

[0022] 11-Lower mold plate, 12-Lower mold core, 13-Lower mold cavity, 14-Guide groove, 15-Angled ejector pin,

[0023] 16-Lower mold support plate, 17-Demolding rod, 18-Demolding guide seat, 19-Lifting cylinder

[0024] 2-Locking structure,

[0025] 21-Locking rod, 22-Locking groove, 23-Locking head, 24-Matching groove, 25-Sensing block,

[0026] 26 - Infrared sensor, 27 - External thread structure,

[0027] 3-Drive structure,

[0028] 31-Transmission gear, 32-First drive hole, 33-First elongated hole, 34-Second elongated hole

[0029] 35-First drive groove, 36-Guide block, 37-Annular groove, 38-Internal threaded hole

[0030] 4-Drive lever,

[0031] 41-Second drive hole, 42-Second drive groove, 43-Bearing housing, 44-Drive gear,

[0032] 45- Rotate handle. Detailed Implementation

[0033] The present invention will now be described in detail with reference to the accompanying drawings.

[0034] like Figure 1-3 As shown, a mold for quick and safe replacement of inclined ejectors includes a lower mold assembly 1. The lower mold assembly 1 includes a lower template 11 and a lower mold core 12 installed on top of the lower template 11. The lower mold core 12 has a lower mold cavity 13. The lower template 11 has a guide groove 14. An inclined ejector pin 15 is slidably installed on the guide groove 14. The top of the inclined ejector pin 15 is connected to the lower mold cavity 13 of the lower mold core 12. The lower mold assembly 1 is provided with a locking structure 2 that cooperates with the inclined ejector pin 15. The locking structure 2 includes a horizontally arranged locking rod 21 and... The drive structure 3 drives the locking rod 21 to move laterally closer to or away from the inclined top post 15. The inclined top post 15 is formed with a locking groove 22 for the locking rod 21 to be inserted. The drive structure 3 includes a drive rod 4 parallel to the locking rod 21. The drive rod 4 is fitted with a drive gear 44. The locking rod 21 is movably fitted with a transmission gear 31 that meshes with the drive gear 44. The transmission gear 31 is formed with an internal threaded hole 38 that is in transmission cooperation with the locking rod 21. The locking rod 21 is formed with an external threaded structure 27 that is in transmission cooperation with the internal threaded hole 38.

[0035] After mold closing, the locking structure 2 activates, and the drive rod 4 rotates. Through the meshing of the drive gear 44 and the transmission gear 31, the locking rod 21, via the external thread structure 27 and the internal thread hole 38 of the transmission gear 31, moves laterally toward the inclined ejector pin 15. The inner end of the inclined ejector pin 15 inserts into the locking groove 22. When the product is demolded, the inclined ejector pin 15 is pushed upwards, and the product detaches from the lower mold cavity 13. Even if the product is connected to the top of the inclined ejector pin 15, due to the action of the locking rod 21, the inclined ejector pin 15 will remain in the guide groove 14 and will not detach with the product, thus ensuring the stability of the inclined ejector pin 15 and preventing it from shifting. When the inclined ejector pin 15 needs to be replaced, the drive rod 4 is rotated in the opposite direction, causing the locking rod 21 to disengage from the locking groove 22. At this time, the inclined ejector pin 15 can be removed from the guide groove 14 for safe replacement.

[0036] Specifically, a lower mold support plate 16 is installed below the lower mold template 11, and a demolding rod 17 is installed on the lower mold support plate 16. The top of the demolding rod 17 contacts the bottom of the inclined ejector pin 15. The lower mold module 1 is provided with a demolding mechanism that drives the lower mold support plate 16 to move longitudinally. The demolding mechanism includes demolding guide seats 18 located on both sides of the lower mold support plate 16. The demolding guide seats 18 are provided with longitudinally arranged lifting cylinders 19, and the driving end of the lifting cylinders 19 is connected to the lower mold support plate 16. In this embodiment, during demolding, the lifting cylinders 19 can drive the lower mold support plate 16 to move longitudinally between the two demolding guide seats 18. The demolding rod 17 installed on the top of the lower mold support plate 16 will lift the inclined ejector pin 15. The inclined ejector pin 15 is lifted along the guide groove 14, so that the product can be separated from the lower mold cavity 13, achieving stable demolding.

[0037] Preferably, the lower template 11 is formed with a first drive hole 32 for axial sliding of the locking rod 21. A first drive groove 35 for mounting the transmission gear 31 is provided along the first drive hole 32. The transmission gear 31 is rotatably mounted in the first drive groove 35. The axial position of the transmission gear 31 remains unchanged. It is mounted in the lower template 11 through the first drive groove 35, ensuring stable rotation of the transmission gear 31 within the first drive groove 35. During rotation, the transmission gear 31 engages with the external thread structure 27 of the locking rod 21 through its internal threaded hole 38, allowing the locking rod 21 to move laterally, thus moving closer to or further away from the inclined top post 15.

[0038] Furthermore, a protruding guide block 36 is installed on the end wall of the first drive groove 35, and a concave annular groove 37 is formed on the end face of the transmission gear 31. The annular groove 37 slides with the guide block 36. With the cooperation of the guide block 36 and the annular groove 37, the transmission gear 31 can be stably rotated and installed in the first drive groove 35. Under the meshing transmission of the drive gear 44, the transmission gear 31 rotates, and the locking rod 21 will not rotate under the threaded engagement, and can move laterally to lock the inclined top column 15.

[0039] Preferably, the first driving hole 32 includes a first elongated hole 33 and a second elongated hole 34 coaxially connected, wherein the diameter of the first elongated hole 33 is larger than the diameter of the second elongated hole 34. A locking head 23 is installed at the outer end of the locking rod 21, and the locking head 23 is formed with a fitting groove 24. The fitting groove 24 can be a cross groove or an internal hexagonal groove. When the driving rod 4 malfunctions, it can be driven to rotate by a cross screwdriver or a hexagonal screwdriver, thereby causing the locking rod 21 to move laterally closer to or away from the inclined top post 15.

[0040] Preferably, the inner end of the locking rod 21 is formed with a concave sensing block 25, and the guide groove 14 of the inclined top post 15 is equipped with an infrared sensor 26 that senses and cooperates with the sensing block 25. When the inner end of the locking rod 21 abuts against the locking groove 22 of the inclined top post 15, the infrared sensor 26 will sense and cooperate with the sensing block 25, and at this time, a locking signal will be emitted to remind the staff to complete the locking; at the same time, if the inner end of the locking rod 21 moves away from the locking groove 22 of the inclined top post 15, an unlocking signal will be emitted to remind the staff that the current state is unlocked.

[0041] Furthermore, the lower template 11 is formed with a second drive hole 41 for the drive rod 4 to rotate. A second drive groove 42 for mounting the drive gear 44 is provided along the second drive hole 41. The drive gear 44 is rotatably mounted in the second drive groove 42. The first drive groove 35 and the second drive groove 42 are connected. The drive rod 4 rotates within the second drive groove 42. A bearing seat 43 is mounted on the inner end of the second drive groove 42, and the inner end of the drive rod 4 is connected to the bearing seat 43 for rotation. When the drive rod 4 rotates, the drive gear 44 rotates synchronously in the second drive groove 42. Since the second drive groove 42 is connected to the first drive groove 35, it can drive the transmission gear 31 of the first drive groove 35 to rotate. The internal threaded hole 38 of the transmission gear 31 is engaged with the external threaded structure 27 of the locking rod 21, allowing the locking rod 21 to move laterally.

[0042] A rotating handle 45 is installed at the outer end of the drive rod 4. By twisting the rotating handle 45, the drive rod 4 is rotated, thereby moving the locking structure 2.

[0043] In summary, this utility model possesses the aforementioned excellent characteristics, enabling it to achieve unprecedented efficiency in use and thus become a highly practical product.

[0044] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A mold for quick and safe replacement of inclined ejectors, comprising a lower mold assembly, the lower mold assembly including a lower template and a lower mold core mounted on top of the lower template, the lower mold core having a lower mold cavity, the lower template having a guide groove, an inclined ejector pin slidably mounted on the guide groove, the top of the inclined ejector pin communicating with the lower mold cavity of the lower mold core; characterized in that: The lower mold module is provided with a locking structure that cooperates with the inclined top post. The locking structure includes a horizontally arranged locking rod and a driving structure that drives the locking rod to move laterally closer to or away from the inclined top post. The inclined top post is formed with a locking groove for the locking rod to be inserted. The driving structure includes a driving rod parallel to the locking rod, a driving gear sleeved on the driving rod, a transmission gear meshing with the driving gear movably sleeved on the locking rod, the transmission gear having an internal threaded hole that drives and engages with the locking rod, and the locking rod having an external threaded structure that drives and engages with the internal threaded hole.

2. The mold for quick and safe replacement of the inclined ejector as described in claim 1, characterized in that: The lower template is formed with a first drive hole for axial sliding of the locking rod, and a first drive groove for mounting a transmission gear is provided along the first drive hole. The transmission gear is rotatably mounted in the first drive groove.

3. A mold for quick and safe replacement of inclined ejectors according to claim 2, characterized in that: The end wall of the first drive groove is equipped with a protruding guide block, and the end face of the transmission gear is formed with a concave annular groove, which slides in conjunction with the guide block.

4. A mold for quick and safe replacement of inclined ejectors according to claim 3, characterized in that: The first driving hole includes a first elongated hole and a second elongated hole that are coaxially connected, wherein the diameter of the first elongated hole is larger than the diameter of the second elongated hole, and a locking head is installed at the outer end of the locking rod, the locking head being formed with a fitting groove.

5. A mold for quick and safe replacement of inclined ejectors according to claim 4, characterized in that: The inner end of the locking rod is formed with a concave sensing block, and the guide groove of the inclined top column is equipped with an infrared sensor that cooperates with the sensing block.

6. A mold for quick and safe replacement of inclined ejectors according to claim 5, characterized in that: The lower template is formed with a second drive hole for the drive rod to rotate. A second drive groove for installing a drive gear is provided along the second drive hole. The drive gear is rotatably installed in the second drive groove. The first drive groove and the second drive groove are connected.

7. A mold for quick and safe replacement of inclined ejectors according to claim 1, characterized in that: A rotating handle is installed at the outer end of the drive rod.

8. A mold for quick and safe replacement of inclined ejectors according to claim 1, characterized in that: A lower mold support plate is installed below the lower mold template, and a demolding rod is installed on the lower mold support plate. The top of the demolding rod contacts the bottom of the inclined top column.

9. A mold for quick and safe replacement of inclined ejectors according to claim 8, characterized in that: The lower mold module is equipped with a demolding mechanism that drives the lower mold support plate to move longitudinally. The demolding mechanism includes demolding guide seats located on both sides of the lower mold support plate. The demolding guide seats are equipped with longitudinally arranged lifting cylinders, and the driving end of the lifting cylinders is connected to the lower mold support plate.

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