Rotary plate demolding mechanism for pipe injection mold

Abstract

The application relates to a rotating plate type demolding mechanism of a pipe injection mold, which comprises a movable mold, a fixed mold and a demolding mechanism, the demolding mechanism comprises a straight pipe demolding assembly and a bent pipe demolding assembly; the bent pipe demolding assembly comprises a straight core, a bent pipe core, a rotating seat, a sliding seat, driving piece three and driving piece four, the straight core is fixedly arranged on the sliding seat, the bent pipe core is fixedly arranged on the rotating seat, a rotating rod is rotationally connected to the rotating seat, the rotating rod is fixedly arranged on the movable mold, the driving piece four drives the rotating seat to rotate, the sliding seat is slidably connected to the rotating seat in the core pulling direction of the straight core, and the driving piece three drives the sliding seat to move. The rotating seat can rotate around the rotating rod, the sliding seat slides on the rotating seat, the core pulling actions of the bent pipe core and the straight core can be orderly performed through the rotation of the rotating seat and the sliding of the sliding seat, compared with the traditional step-by-step core pulling which needs two groups of independent core pulling mechanisms, the mold structure is simplified, and the production efficiency and the reliability of the mold are improved.

Description

Technical Field

[0001] This utility model relates to the field of molds, and in particular to a rotary plate demolding mechanism for pipe injection molds. Background Technology

[0002] Pipe bends are widely used in our daily lives, such as the connection at the bend of water pipes. Pipe bends are usually injection molded during the processing. However, due to the structural problems of bends, they cannot be demolded normally during production. Therefore, current bends are specially equipped with a rotary demolding mechanism.

[0003] For example Figure 1 When the pipe fitting 1 shown is demolded, the two ends of the straight pipe part 11 are pulled out, while the forming of the bent pipe part 12 is more complicated and requires two steps to pull out the core: first, the straight core is pulled out to make room for the core pulling action of the bent pipe core, and then the core pulling operation of the bent pipe core can be carried out.

[0004] This step-by-step core-pulling process requires the mold structure to be equipped with two independent core-pulling mechanisms. This increases the number of mechanical transmission components in the mold, making the overall mold structure very bulky and complex. This not only increases the manufacturing cost and processing difficulty of the mold, but also reduces the production efficiency and reliability of the mold. Utility Model Content

[0005] To address the issue of complex mold structures, this application provides a rotary plate demolding mechanism for pipe injection molds.

[0006] The rotary plate demolding mechanism for pipe fitting injection molds provided in this application adopts the following technical solution:

[0007] A rotary plate demolding mechanism for injection molds of pipe fittings includes a moving mold, a fixed mold, and a demolding mechanism. The demolding mechanism includes a straight pipe demolding assembly and a bent pipe demolding assembly. The straight pipe demolding assembly includes a first core-pulling block, a second core-pulling block, a first driving component for moving the first core-pulling block, and a second driving component for moving the second core-pulling block.

[0008] The tube bending demolding assembly includes a straight core, a bent core, a rotating seat, a sliding seat, a third driving component, and a fourth driving component. The straight core is fixedly mounted on the sliding seat, the bent core is fixedly mounted on the rotating seat, a rotating rod is rotatably connected to the rotating seat, the rotating rod is fixedly mounted on the moving mold, the fourth driving component drives the rotating seat to rotate, the sliding seat is slidably connected to the rotating seat along the core-pulling direction of the straight core, and the third driving component drives the sliding seat to move.

[0009] By adopting the above technical solution, the demolding mechanism is divided into a straight tube demolding assembly and a bent tube demolding assembly. The straight tube demolding assembly is responsible for pulling the core of the straight tube, while the bent tube demolding assembly, through the cooperation of components such as the straight core, the bent core, the rotating seat, and the sliding seat, can realize the pulling of the core of the bent tube. Among them, the rotating seat can rotate around the rotating rod, and the sliding seat slides on the rotating seat. This structural design allows the pulling action of the bent core and the straight core to be carried out in an orderly manner through the rotation of the rotating seat and the sliding of the sliding seat. Compared with the traditional step-by-step core pulling which requires two independent core pulling mechanisms, this simplifies the mold structure, reduces the number of mechanical transmission parts, reduces the manufacturing cost and processing difficulty of the mold, and improves the production efficiency and reliability of the mold.

[0010] Preferably, the first driving component includes a hydraulic cylinder, a first frame, and a first movable seat. The first core-pulling block is fixedly mounted on the first movable seat. The hydraulic cylinder is fixedly mounted on the moving mold via the first frame. The first movable seat slides on the first frame along the core-pulling direction of the first core-pulling block. The piston rod of the hydraulic cylinder is fixedly mounted on the first movable seat. The fourth driving component is a connecting rod, with both ends of the connecting rod hinged to a rotating seat and the first movable seat, respectively.

[0011] By adopting the above technical solution, the hydraulic cylinder is fixed on the moving mold through the first frame, which can stably drive the first moving seat, thereby driving the first core-pulling block to perform the core-pulling action. Its power output is stable and controllable. The driving component four is set as a connecting rod hinged to the first moving seat, so that when the first core-pulling block moves to pull the core, it can drive the rotating seat to rotate through the connecting rod. This cleverly links the core-pulling action of the straight tube part with the rotation demolding action of the bent tube part, further simplifying the transmission relationship between the mechanisms, reducing the number of additional driving devices, and making the entire demolding process more coherent and efficient. It saves costs while improving the operational stability of the mold.

[0012] Preferably, the second driving component includes a second movable seat, a second frame, a shaped frame, and a slider. The second core-pulling block is fixedly mounted on the second movable seat, the second frame is fixedly mounted on the moving mold, the second movable seat slides on the second frame along the core-pulling direction of the second core-pulling block, the shaped frame is fixed on the fixed mold, the shaped frame has an inclined groove along the inclined direction, and the slider is fixedly mounted on the second movable seat and slides in the inclined groove.

[0013] By adopting the above technical solution, the second movable seat slides on the second frame, which can drive the second core-pulling block to move along the core-pulling direction. The cooperation between the inclined groove on the irregular frame and the slider allows the movement trajectory of the second core-pulling block to be adjusted according to the shape of the inclined groove during movement, which can more flexibly adapt to the demolding requirements of the pipe fittings. This structural design does not require a complex power transmission system. The special core-pulling action of the second core-pulling block can be realized solely through the structural design of the irregular frame on the fixed mold. This simplifies the drive structure, reduces the difficulty of mold design and manufacturing, and improves the accuracy and stability of the core-pulling action.

[0014] Preferably, there are two irregularly shaped frames and two sliders, with the two sliders fixed on both sides of the second movable seat, the two irregularly shaped frames located on both sides of the second movable seat, and the two sliders sliding in two inclined grooves.

[0015] By adopting the above technical solution, and using two irregularly shaped frames and sliders symmetrically arranged, the second moving seat can be subjected to more uniform force during the core pulling process, avoiding the displacement or jamming of the second core pulling block due to uneven force, thus ensuring the smoothness and reliability of the core pulling action. At the same time, the symmetrical structure further enhances the stability of the entire core pulling assembly, improves the service life of the mold, and makes the mold safer and more reliable during operation, reducing downtime for maintenance due to component damage and improving production efficiency.

[0016] Preferably, the third driving component is an inclined guide post, which slides on the slide block in an inclined direction. The end of the inclined guide post is fixedly mounted on the fixed mold. The slide block and the rotating seat are interference-fitted. When the mold is opened, the inclined guide post disengages from the slide block, and the straight core completes the core pulling operation.

[0017] By adopting the above technical solution, during mold opening, the fixed mold and the moving mold separate, and the inclined guide post is displaced relative to the slide. Under the inclined guiding action of the inclined guide post, the slide overcomes the interference resistance between itself and the rotating seat and slides on the rotating seat along the core-pulling direction of the straight core until the inclined guide post is completely separated from the slide. At this time, the straight core is simultaneously pulled out. This structure cleverly utilizes the relative motion of mold opening. Through the guidance of the inclined guide post and the interference fit between the slide and the rotating seat, the precise core pulling of the straight core can be achieved without an additional power source, simplifying the power system of the demolding mechanism. At the same time, the interference fit ensures that the slide is accurately positioned and runs stably during the core pulling process, effectively improving the reliability and consistency of the core pulling action, reducing the complexity of the mold and manufacturing cost, and improving production efficiency.

[0018] Preferably, the bent tube core has an extension rod, the extension rod is fixed on the rotating seat, and the slide seat has a through groove for the extension rod to pass through.

[0019] By adopting the above technical solution, the bent core is fixed on the rotating seat by the extension rod, and the through groove on the slide provides the extension rod with a space for movement, which improves the stability and reliability of the mold.

[0020] The main technical effects of this utility model are reflected in the following aspects:

[0021] 1. This utility model is equipped with a tube bending demolding assembly. Through the cooperation of components such as a straight core, a bent core, a rotating seat, and a sliding seat, the core pulling of the bent tube part can be realized. Among them, the rotating seat can rotate around the rotating rod, and the sliding seat slides on the rotating seat. This structural design allows the core pulling action of the bent core and the straight core to be carried out in an orderly manner through the rotation of the rotating seat and the sliding of the sliding seat. Compared with the traditional step-by-step core pulling which requires two sets of independent core pulling mechanisms, it simplifies the mold structure, reduces the number of mechanical transmission parts, reduces the manufacturing cost and processing difficulty of the mold, and improves the production efficiency and reliability of the mold.

[0022] 2. In this utility model, the driving component four is set as a connecting rod that is hinged to the first moving seat, so that when the first core-pulling block moves during core pulling, it can drive the rotating seat to rotate through the connecting rod. This cleverly links the core pulling action of the straight tube part with the rotation demolding action of the bent tube part, further simplifying the transmission relationship between the mechanisms, reducing the number of additional driving devices, and making the entire demolding process more coherent and efficient. This saves costs while improving the operational stability of the mold. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the basic structure of the pipe fitting.

[0024] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application.

[0025] Figure 3 This is a schematic diagram of the structure of the pipe bending demolding assembly according to an embodiment of this application.

[0026] Figure 4 This is a schematic diagram of the connection between the bent tube core and the rotating seat in an embodiment of this application.

[0027] Figure 5 This is a schematic diagram of the structure of driver component four in this application embodiment.

[0028] Figure 6 This is a schematic diagram of the irregular frame structure according to an embodiment of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Pipe fitting; 11. Straight pipe section; 12. Bent pipe section; 21. Moving mold; 22. Fixed mold; 3. Straight pipe demolding assembly; 31. First core-pulling block; 32. Hydraulic cylinder; 33. First frame; 34. First moving seat; 35. Second core-pulling block; 36. Second moving seat; 37. Second frame; 38. Irregular frame; 381. Inclined groove; 39. Slider; 4. Bent pipe demolding assembly; 41. Straight core; 42. Bent core; 421. Extension rod; 43. Rotating seat; 431. Rotating rod; 44. Slide seat; 441. Through groove; 45. Inclined guide post; 46. Connecting rod. Detailed Implementation

[0030] The following is in conjunction with the appendix Figures 1-6 This application will be described in further detail to make the technical solution of this application easier to understand and master.

[0031] This application discloses a rotary plate demolding mechanism for pipe fitting injection molds.

[0032] Reference Figures 1-3 The rotary plate demolding mechanism for a pipe injection mold in this embodiment includes a moving mold 21, a fixed mold 22, and a demolding mechanism. The demolding mechanism includes a straight pipe demolding assembly 3 and a bent pipe demolding assembly 4. The straight pipe demolding assembly 3 includes a first core-pulling block 31, a second core-pulling block 35, a first driving member for moving the first core-pulling block 31, and a second driving member for moving the second core-pulling block 35.

[0033] Reference Figures 2-5 The tube bending demolding assembly 4 includes a straight core 41, a bent core 42, a rotating seat 43, a slide 44, a third driving component, and a fourth driving component. The straight core 41 is fixedly mounted on the slide 44, the bent core 42 is fixedly mounted on the rotating seat 43, a rotating rod 431 is rotatably connected to the rotating seat 43, the rotating rod 431 is fixedly mounted on the moving mold 21, the fourth driving component drives the rotating seat 43 to rotate, the slide 44 is slidably connected to the rotating seat 43 along the core-pulling direction of the straight core 41, and the third driving component drives the slide 44 to move.

[0034] Reference Figures 2-5 By dividing the demolding mechanism into a straight tube demolding assembly 3 and a bent tube demolding assembly 4, the straight tube demolding assembly 3 is responsible for pulling the core of the straight tube 11, while the bent tube demolding assembly 4, through the cooperation of components such as the straight core 41, the bent core 42, the rotating seat 43, and the sliding seat 44, can realize the pulling of the core of the bent tube 12. Among them, the rotating seat 43 can rotate around the rotating rod 431, and the sliding seat 44 slides on the rotating seat 43. This structural design allows the pulling action of the bent core 42 and the straight core 41 to be carried out in an orderly manner through the rotation of the rotating seat 43 and the sliding of the sliding seat 44. Compared with the traditional step-by-step core pulling which requires two independent core pulling mechanisms, this simplifies the mold structure, reduces the number of mechanical transmission parts, lowers the mold manufacturing cost and processing difficulty, and improves the mold production efficiency and reliability.

[0035] Reference Figures 2-5 The first driving component includes a hydraulic cylinder 32, a first frame 33, and a first movable seat 34. A first core-pulling block 31 is fixedly mounted on the first movable seat 34. The hydraulic cylinder 32 is fixedly mounted on the moving mold 21 via the first frame 33. The first movable seat 34 slides on the first frame 33 along the core-pulling direction of the first core-pulling block 31. The piston rod of the hydraulic cylinder 32 is fixedly mounted on the first movable seat 34. The fourth driving component is a connecting rod 46, with both ends of the connecting rod 46 hinged to the rotating seat 43 and the first movable seat 34, respectively.

[0036] Reference Figures 2-5 The hydraulic cylinder 32 is fixed to the moving mold 21 via the first frame 33, and can stably drive the first moving seat 34, thereby driving the first core-pulling block 31 to perform the core-pulling action. Its power output is stable and controllable. The driving component 4 is set as a connecting rod 46 hinged to the first moving seat 34, so that when the first core-pulling block 31 moves to pull the core, it can drive the rotating seat 43 to rotate through the connecting rod 46. This cleverly links the core-pulling action of the straight tube part 11 with the rotation demolding action of the bent tube part 12, further simplifying the transmission relationship between the mechanisms, reducing the number of additional driving devices, and making the entire demolding process more coherent and efficient. It saves costs while improving the operational stability of the mold.

[0037] Reference Figure 2 , Figure 3 and Figure 6 The second driving component includes a second movable seat 36, a second frame 37, a shaped frame 38, and a slider 39. The second core-pulling block 35 is fixedly mounted on the second movable seat 36, and the second frame 37 is fixedly mounted on the moving mold 21. The second movable seat 36 slides on the second frame 37 along the core-pulling direction of the second core-pulling block 35. The shaped frame 38 is fixedly mounted on the fixed mold 22. An inclined groove 381 is provided on the shaped frame 38 along the inclined direction. The slider 39 is fixedly mounted on the second movable seat 36 and slides in the inclined groove 381.

[0038] Reference Figure 2 , Figure 3 and Figure 6 The second movable seat 36 slides on the second frame 37, driving the second core-pulling block 35 to move along the core-pulling direction. The cooperation between the inclined groove 381 on the irregular frame 38 and the slider 39 allows the movement trajectory of the second core-pulling block 35 to be adjusted according to the shape of the inclined groove 381 during movement, enabling more flexible adaptation to the demolding requirements of the pipe fitting 1. This structural design eliminates the need for a complex power transmission system; the special core-pulling action of the second core-pulling block 35 can be achieved solely through the structural design of the irregular frame 38 on the fixed mold 22. This simplifies the drive structure, reduces the difficulty of mold design and manufacturing, and simultaneously improves the accuracy and stability of the core-pulling action.

[0039] Reference Figure 2 and Figure 6 There are two irregularly shaped frames 38 and two sliders 39. The two sliders 39 are fixed on both sides of the second movable seat 36, the two irregularly shaped frames 38 are located on both sides of the second movable seat 36, and the two sliders 39 slide in the two inclined grooves 381 respectively.

[0040] Reference Figure 2 and Figure 6 By employing two irregularly shaped frames 38 and a slider 39 symmetrically arranged, the second moving seat 36 can be subjected to more even force during the core-pulling process, avoiding displacement or jamming of the second core-pulling block 35 due to uneven force distribution, thus ensuring the smoothness and reliability of the core-pulling action. At the same time, the symmetrical structure further enhances the stability of the entire core-pulling assembly, increases the service life of the mold, makes the mold safer and more reliable during operation, reduces downtime for maintenance due to component damage, and improves production efficiency.

[0041] Reference Figure 2 and Figure 3 The third driving component is an inclined guide post 45, which slides on the slide block 44 in an inclined direction. The end of the inclined guide post 45 is fixed on the fixed mold 22. The slide block 44 and the rotating seat 43 are interference-fitted. When the mold is opened, the inclined guide post 45 disengages from the slide block 44, and the straight core 41 completes the core pulling operation.

[0042] Reference Figure 2 and Figure 3 During mold opening, the fixed mold 22 separates from the moving mold 21, and the inclined guide post 45 displaces relative to the slide block 44. Under the inclined guiding action of the inclined guide post 45, the slide block 44 overcomes the interference resistance between itself and the rotating seat 43 and slides on the rotating seat 43 along the core-pulling direction of the straight core 41 until the inclined guide post 45 completely disengages from the slide block 44. At this time, the straight core 41 simultaneously completes the core-pulling operation. This structure cleverly utilizes the relative motion of mold opening. Through the guidance of the inclined guide post 45 and the interference fit between the slide block 44 and the rotating seat 43, precise core-pulling of the straight core 41 can be achieved without an additional power source, simplifying the power system of the demolding mechanism. At the same time, the interference fit ensures that the slide block 44 is accurately positioned and runs stably during the core-pulling process, effectively improving the reliability and consistency of the core-pulling action, reducing the complexity of the mold and manufacturing cost, and improving production efficiency.

[0043] Reference Figures 3-5 The bent core 42 has an extension rod 421, which is fixed to the rotating seat 43. The slide 44 has a through groove 441 for the extension rod 421 to pass through. The bent core 42 is fixed to the rotating seat 43 by the extension rod 421, and the through groove 441 on the slide 44 provides room for the extension rod 421 to move, thus improving the stability and reliability of the mold.

[0044] Reference Figure 3 In this embodiment, the mold can simultaneously form two pipe fittings 1, wherein the pipe bending demolding components 4 are symmetrically arranged on both sides of the two pipe fittings 1. The rotating base 43 is composed of multiple blocks spliced ​​together.

[0045] Of course, the above are just typical examples of this application. In addition, this application may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed in this application.

Claims

1. A rotary plate demolding mechanism for pipe fitting injection molds, characterized in that: It includes a moving mold (21), a fixed mold (22) and a demolding mechanism. The demolding mechanism includes a straight pipe demolding assembly (3) and a bent pipe demolding assembly (4). The straight pipe demolding assembly (3) includes a first core-pulling block (31), a second core-pulling block (35), a driving component one for driving the first core-pulling block (31) to move, and a driving component two for driving the second core-pulling block (35) to move. The tube bending demolding assembly (4) includes a straight core (41), a bent core (42), a rotating seat (43), a sliding seat (44), a third driving component, and a fourth driving component. The straight core (41) is fixedly mounted on the sliding seat (44), the bent core (42) is fixedly mounted on the rotating seat (43), a rotating rod (431) is rotatably connected to the rotating seat (43), the rotating rod (431) is fixedly mounted on the moving mold (21), the fourth driving component drives the rotating seat (43) to rotate, the sliding seat (44) is slidably connected to the rotating seat (43) along the core-pulling direction of the straight core (41), and the third driving component drives the sliding seat (44) to move.

2. The rotary plate demolding mechanism for pipe fitting injection molds according to claim 1, characterized in that: The first driving component includes a hydraulic cylinder (32), a first frame (33), and a first movable seat (34). The first core-pulling block (31) is fixedly mounted on the first movable seat (34). The hydraulic cylinder (32) is fixedly mounted on the moving mold (21) via the first frame (33). The first movable seat (34) slides on the first frame (33) along the core-pulling direction of the first core-pulling block (31). The piston rod of the hydraulic cylinder (32) is fixedly mounted on the first movable seat (34). The fourth driving component is a connecting rod (46). The two ends of the connecting rod (46) are respectively hinged to the rotating seat (43) and the first movable seat (34).

3. The rotary plate demolding mechanism for pipe fitting injection molds according to claim 1, characterized in that: The second driving component includes a second movable seat (36), a second frame (37), a shaped frame (38), and a slider (39). The second core-pulling block (35) is fixedly mounted on the second movable seat (36), and the second frame (37) is fixedly mounted on the moving mold (21). The second movable seat (36) slides on the second frame (37) along the core-pulling direction of the second core-pulling block (35). The shaped frame (38) is fixedly mounted on the fixed mold (22). An inclined groove (381) is provided on the shaped frame (38) along the inclined direction. The slider (39) is fixedly mounted on the second movable seat (36) and slides in the inclined groove (381).

4. The rotary plate demolding mechanism for pipe fitting injection molds according to claim 3, characterized in that: There are two irregularly shaped frames (38) and two sliders (39). The two sliders (39) are fixed on both sides of the second movable seat (36). The two irregularly shaped frames (38) are located on both sides of the second movable seat (36). The two sliders (39) slide in the two inclined grooves (381).

5. The rotary plate demolding mechanism for pipe fitting injection molds according to claim 1, characterized in that: The third driving component is an inclined guide post (45), which slides on the slide block (44) in an inclined direction, and the end of the inclined guide post (45) is fixedly set on the fixed mold (22).

6. The rotary plate demolding mechanism for pipe fitting injection molds according to claim 1, characterized in that: The bent tube core (42) has an extension rod (421), which is fixed on the rotating seat (43). The slide seat (44) has a through groove (441) for the extension rod (421) to pass through.

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