Core mold of pipe making machine

Abstract

The utility model provides a pipe making machine core mold which comprises an outer mold and a shaping plate, the shaping plate is connected in a shaping cavity formed between the outer mold and an inner mold in a sliding mode, a moving ring is connected in the shaping plate in a sliding mode, the upper surface of the moving ring is fixedly connected with a moving plate through a fixing rod, and the middle of the lower surface of the moving plate is fixedly connected with a moving sleeve. Meanwhile, the lower end of the movable sleeve penetrates through a through hole formed in the inner mold to be in threaded connection with a lifting lead screw, the lower end of the lifting lead screw is fixedly connected into a mounting groove formed in the inner mold through a fixing frame, the shaping plate is composed of an outer part, an inner part and a bottom part, the lower end of the inner part is fixedly connected with the inner side face of the bottom part, and a limiting groove is formed in the outer side face of the bottom part. Through the cooperation of the shaping plate, the movable ring, the fixed rod, the movable plate, the movable sleeve and the lifting screw rod, the mold can be used for producing core molds with different lengths, the demolding difficulty of the core molds can be conveniently reduced, and the production efficiency of the mold can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of core molds, in particular to a core mold for a pipe making machine. Background Art

[0002] Cement pipe making machine, as the name implies, is a machine for making cement pipes. It is also commonly known as cement pipe making machinery and cement pipe making equipment. Its main structure is divided into two parts: machinery and molds. According to its structural form, it can be divided into suspended roller pipe making machine and centrifugal pipe making machine. The core mold is an important component of the pipe making machine, and the core mold needs to be used in the production process; the length of the existing core mold production mold is usually not adjustable, which leads to the need for core molds of different lengths to make core molds of different lengths, which is more expensive.

[0003] After searching, a core mold of a pipe making machine disclosed in the prior art (application number: CN201720343405.4) records "outer mold; adjustment mechanism, arranged inside the outer mold; inner mold, arranged inside the outer mold; bottom cylinder, fixedly installed at the bottom of the outer mold; adjustment mechanism, including: hydraulic cylinder, arranged just below the inner mold; fixed plate, fixedly installed at the telescopic end of the hydraulic cylinder; push plate, fixedly installed on the upper surface of the fixed plate; adjustment ring, fixedly installed on the upper surface of the push plate; connecting block, fixedly installed on the lower end of the inner wall of the outer mold, and the right wall of the connecting block is fixedly installed on the lower end of the outer wall of the inner mold; through hole, opened on the upper surface of the connecting block, and the push plate passes through the inside of the through hole."; According to the length of the core mold, the mold starts the hydraulic cylinder to push the position of the adjustment ring inside the outer mold, so that the upper cavity between the outer mold and the inner mold reaches the requirement of the core mold length. After completion, the raw materials flow into the upper cavity between the outer mold and the inner mold. The structure is simple, which is convenient for making core molds of different lengths and reduces the production cost of core molds of different lengths. However, in the process of producing the core mold, the raw materials are accumulated at the upper end of the mold, and then the mold will have a problem of being heavy on the top and light on the bottom, which makes the mold prone to tipping over. In addition, when the raw materials are injected to produce the core mold, the core mold cannot be demolded conveniently, and when the core mold is not demolded, the mold cannot produce the next core mold, which makes the production efficiency of the mold low. Utility Model Content

[0004] In order to overcome the defects of the prior art, a core mold of a pipe making machine is provided to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, a core mold of a pipe making machine is provided, comprising: an outer mold and a shaping plate, the upper surface of the bottom plate is fixedly connected to the outer mold and the inner mold respectively, the shaping plate is slidably connected in the shaping cavity formed between the outer mold and the inner mold, and the shaping plate is slidably connected to a moving ring, and the upper surface of the moving ring is fixedly connected to the moving plate through a fixing rod, and the middle part of the lower surface of the moving plate is fixedly connected to a moving sleeve, and at the same time, the lower end of the moving sleeve passes through a through hole opened in the inner mold and is screwed to a lifting screw rod, and the lower end of the lifting screw rod is fixedly connected to the mounting groove opened in the inner mold through a fixing frame, and the bottom of the mounting groove is fixedly connected to a main motor, and the output shaft of the main motor is connected to the lower end of the lifting screw rod through a coupling, the shaping plate is composed of an outer component, an inner component and a bottom component, and the lower end of the inner component is fixedly connected to the inner side surface of the bottom component, and a limiting groove is opened on the outer side surface of the bottom component, and at the same time, the position of the outer component surface relative to the limiting groove corresponds to the limiting block, and the inner side surface of the inner component is symmetrically connected to the positioning block, and the positioning block is slidably connected in the positioning groove opened in the inner mold.

[0006] Preferably, the inner mold is an overall cylindrical structure, the mounting groove opened inside the inner mold is a cylindrical structure, and the axial lengths of the inner mold and the outer mold are equal. At the same time, the fixing frame fixedly connected in the mounting groove is a herringbone structure.

[0007] Preferably, the outer arc surface of the inner mold has multiple groups of positioning grooves with equal intervals around the circumference. The positioning grooves are in the shape of long strips, and both ends of the positioning grooves pass through the upper and lower end surfaces of the inner mold. At the same time, the through hole opened in the middle of the upper surface of the inner mold is in a square structure.

[0008] Preferably, the movable plate has a circular structure, the movable sleeve fixedly connected to the lower surface of the movable plate has a square cylindrical structure, and the horizontal cross-section of the movable sleeve has an outer square and inner circular structure. At the same time, the inner cavity of the movable sleeve is screwed to the lifting screw through the opened threaded structure, and the size of the outer side surface of the movable sleeve is matched with the size of the through hole.

[0009] Preferably, four groups of fixed rods are fixedly connected at equal intervals along the circumferential direction at the edge of the lower surface of the movable plate, and the fixed rods are all cylindrical structures, and the movable ring fixedly connected to the lower end of the fixed rod is annular structure, and a material injection port is opened on the upper surface of the movable ring.

[0010] Preferably, the bottom part in the shaping plate is in an annular structure, the inner part fixedly connected to the inner arc surface of the bottom part is in a cylindrical structure, and the inner arc surface of the inner part is circumferentially fixedly connected with multiple groups of positioning blocks at equal intervals, and the positioning blocks are in a long strip structure.

[0011] Preferably, there are two groups of external parts in the shaping plate, the radial cross-sections of the two groups of external parts are both semicircular ring structures, and the end faces of one group of external parts are provided with slots at parallel and equal intervals, and the opposite positions of the end faces of the other group of external parts correspond to connecting buckles, and the two groups of external parts are connected by buckles to form a cylindrical structure. At the same time, the limit block fixedly connected to the lower end of the external part is a semicircular ring structure, and the size of the limit groove opened on the limit block and the bottom part is matched.

[0012] Compared with the prior art, the beneficial effect of the utility model is that the raw material is injected into the lower end of the mold through the cooperation of the bottom plate, the outer mold, the inner mold and the movable ring, thereby ensuring that the mold is in a state of being heavy at the bottom and light at the top, and thus being able to effectively enhance the stability of the mold when placed, and reduce the chance of the mold tipping over. At the same time, through the structural setting of the shaping plate, the shaping plate can drive the produced core mold to quickly separate from the mold, and then the worker can embed the new shaping plate into the mold to produce the next core mold, and can also reduce the attachment area of ​​the core mold by disassembling the external parts of the shaping plate, thereby effectively reducing the difficulty of demolding the core mold, ensuring that production and demolding can be carried out simultaneously, and improving the production efficiency of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view schematic diagram of an embodiment of the utility model.

[0014] Figure 2 It is a schematic top view of an embodiment of the utility model.

[0015] Figure 3 This is a schematic diagram of the disassembly of the shaping plate according to an embodiment of the utility model.

[0016] Figure 4 For the utility model embodiment Figure 1 An enlarged schematic diagram of point A.

[0017] In the figure: 1. bottom plate; 2. outer mold; 3. shaping plate; 4. main motor; 5. fixed frame; 6. inner mold; 7. moving ring; 8. fixed rod; 9. moving sleeve; 10. lifting screw rod; 11. moving plate; 12. positioning block; 13. outer part; 14. limit block; 15. bottom part; 16. inner part. DETAILED DESCRIPTION

[0018] Reference Figures 1 to 4As shown, the utility model provides a core mold of a pipe making machine, comprising: an outer mold 2 and a shaping plate 3, the upper surface of a bottom plate 1 is fixedly connected to the outer mold 2 and the inner mold 6 respectively, the shaping plate 3 is slidably connected in the shaping cavity formed between the outer mold 2 and the inner mold 6, and the shaping plate 3 is slidably connected in the shaping plate 3. The moving ring 7 is slidably connected, and the upper surface of the moving ring 7 is fixedly connected to the moving plate 11 through a fixing rod 8, and the middle part of the lower surface of the moving plate 11 is fixedly connected to the moving sleeve 9, and the lower end of the moving sleeve 9 passes through the through hole opened in the inner mold 6 and is screwed to the lifting screw 10, and the lower end of the lifting screw 10 is fixed by the fixing frame 5 It is connected in the installation groove opened in the inner mold 6, and the bottom of the installation groove is fixedly connected to the main motor 4, the output shaft of the main motor 4 is connected to the lower end of the lifting screw 10 through a coupling, the shaping plate 3 is composed of an outer part 13, an inner part 16 and a bottom part 15, and the lower end of the inner part 16 is fixedly connected to the inner side surface of the bottom part 15, and a limiting groove is opened on the outer side surface of the bottom part 15, and at the same time, the position of the surface of the outer part 13 relative to the limiting groove corresponds to the limiting block 14, and the inner side surface of the inner part 16 is symmetrically connected to the positioning block 12, and the positioning block 12 is slidably connected in the positioning groove opened in the inner mold 6.

[0019] In this embodiment, the length of the core mold to be produced is determined first, and then the switch of the main motor 4 is started. The main motor 4 drives the lifting screw 10 to rotate at a low speed through the coupling, and then the lifting screw 10 drives the moving plate 11, the fixed rod 8 and the moving ring 7 to move synchronously through the screwed moving sleeve 9, and the worker can confirm in real time whether the moving position of the moving ring 7 meets the requirements through the scale lines opened on the outer surface of the moving sleeve 9. Then, the injection pipe is fixedly connected to the injection port opened by the moving ring 7, the valve of the injection pipe is opened, and the raw material is injected into the lower end of the mold through the injection port. After the raw material is formed into a core mold, the corresponding switch of the main motor 4 is started again. , so that the lifting screw 10 pushes the movable sleeve 9, the movable plate 11, the fixed rod 8 and the movable ring 7 to move up quickly, and then the movable sleeve 9 can be smoothly separated from the lifting screw 10, and the movable ring 7 is removed from the mold, and the shaping plate 3 and the core mold are taken out at the same time, and the new shaping plate 3 is embedded in the mold, and then the lower end of the movable sleeve 9 is re-screwed to the upper end of the lifting screw 10, and the position of the movable ring 7 is adjusted to produce the next core mold. At the same time, after the workers disassemble the two sets of outer components 13, only the inner surface of the core mold is attached to the surface of the inner component 16, thereby effectively reducing the demoulding difficulty of the core mold and improving the production efficiency of the core mold.

[0020] As a preferred embodiment, the inner mold 6 is an overall cylindrical structure, the mounting groove opened inside the inner mold 6 is a cylindrical structure, and the axial lengths of the inner mold 6 and the outer mold 2 are equal. At the same time, the fixing frame 5 fixedly connected in the mounting groove is a herringbone structure.

[0021] In this embodiment, if Figure 1 and Figure 2The installation groove allows the main motor 4 and the lifting screw 10 to be installed inside the mold, reducing the overall volume of the mold. At the same time, the setting of the fixing frame 5 can enhance the stability of the lifting screw 10 when it rotates.

[0022] As a preferred embodiment, a plurality of positioning grooves are provided at equal intervals around the outer arc surface of the inner mold 6 in the circumferential direction. The positioning grooves are in the shape of long strips, and both ends of the positioning grooves pass through the upper and lower end surfaces of the inner mold 6. At the same time, a through hole is provided in the middle of the upper surface of the inner mold 6 in the shape of a square.

[0023] In this embodiment, if Figure 1 and Figure 2 The opening of the positioning groove enables the shaping plate 3 to be stably connected in the shaping cavity to prevent the shaping plate 3 from accidentally rotating in the shaping cavity. At the same time, the structural setting of the through hole can prevent the moving sleeve 9 from rotating synchronously with the lifting screw 10.

[0024] As a preferred embodiment, the movable plate 11 has a circular structure, the movable sleeve 9 fixedly connected to the lower surface of the movable plate 11 has a square cylindrical structure, and the horizontal cross-section of the movable sleeve 9 has an outer square and inner circular structure. At the same time, the inner cavity of the movable sleeve 9 is screwed to the lifting screw 10 through a threaded structure, and the size of the outer side surface of the movable sleeve 9 is matched with the size of the through hole.

[0025] In this embodiment, if Figure 1 and Figure 2 The sizes of the moving sleeve 9 and the through hole are matched, which can enhance the stability of the moving sleeve 9 when moving and avoid the shaking of the moving sleeve 9, thereby helping to enhance the stability of the moving ring 7 and the moving plate 11.

[0026] As a preferred embodiment, four groups of fixed rods 8 are fixedly connected at equal intervals along the circumferential direction at the edge of the lower surface of the movable plate 11, and the fixed rods 8 are all cylindrical structures, and the movable ring 7 fixedly connected to the lower end of the fixed rods 8 is a circular ring structure, and a material injection port is opened on the upper surface of the movable ring 7.

[0027] In this embodiment, if Figure 1 and Figure 2 The setting of the fixed rod 8 enables the movable plate 11 and the movable ring 7 to be fixedly connected, and then the movable plate 11 and the movable ring 7 can move synchronously through the movable sleeve 9, and the setting of the injection port facilitates the injection of raw materials.

[0028] As a preferred embodiment, the bottom component 15 in the shaping plate 3 is in a circular ring structure, the inner component 16 fixedly connected to the inner arc surface of the bottom component 15 is in a cylindrical structure, and the inner arc surface of the inner component 16 is circumferentially surrounded by a plurality of groups of positioning blocks 12 fixedly connected at equal intervals, and the positioning blocks 12 are in a long strip structure.

[0029] In this embodiment, if Figure 3 and Figure 4 The sizes of the positioning block 12 and the positioning groove are matched, so that the shaping plate 3 can be stably connected to the shaping cavity opened in the mold, and the limiting groove opened on the outer arc surface of the bottom component 15 is a circular ring structure.

[0030] As a preferred embodiment, there are two groups of outer parts 13 in the shaping plate 3, and the radial cross-sections of the two groups of outer parts 13 are both semicircular ring structures, and the end faces of one group of outer parts 13 are provided with slots at parallel and equal intervals, and the opposite positions of the end faces of the other group of outer parts 13 correspond to the connecting buckles. The two groups of outer parts 13 are connected by buckles to form a cylindrical structure. At the same time, the limit block 14 fixedly connected to the lower end of the outer part 13 is a semicircular ring structure, and the size of the limit groove provided on the limit block 14 and the bottom part 15 are adapted.

[0031] In this embodiment, if Figure 3 and Figure 4 The two sets of outer parts 13 are fixedly connected together by snap fasteners, which facilitates the quick loading and unloading of the outer parts 13. The sizes of the molding plate 3 and the molding cavity are matched, which can help enhance the stability of the connection between the outer parts 13. The sizes of the limiting block 14 and the limiting groove are matched, so that the outer parts 13 can be conveniently fixedly connected to the bottom part 15.

[0032] The core mold of the pipe making machine of the utility model can produce core molds of different lengths, easily reduce the demoulding difficulty of the core mold, improve the production efficiency of the mold, and reduce the probability of the mold tipping over during use through the cooperation of the shaping plate 3, the moving ring 7, the fixing rod 8, the moving plate 11, the moving sleeve 9 and the lifting screw 10.

Claims

1. A core mold of a pipe making machine, comprising: The outer mold (2) and the shaping plate (3), the upper surface of the bottom plate (1) are respectively fixedly connected to the outer mold (2) and the inner mold (6), and the characteristic is that: the shaping plate (3) is slidably connected in the shaping cavity formed between the outer mold (2) and the inner mold (6), and the moving ring (7) is slidably connected in the shaping plate (3), and the upper surface of the moving ring (7) is fixedly connected to the moving plate (11) through a fixing rod (8), and the middle part of the lower surface of the moving plate (11) is fixedly connected to the moving sleeve (9), and at the same time, the lower end of the moving sleeve (9) passes through the through hole opened in the inner mold (6) and is screwed to the lifting screw rod (10), and the lower end of the lifting screw rod (10) is fixedly connected to the inner mold (6) through a fixing frame (5). The main motor (4) is fixedly connected to the bottom of the mounting groove, and the output shaft of the main motor (4) is connected to the lower end of the lifting screw (10) through a coupling. The shaping plate (3) is composed of an outer part (13), an inner part (16) and a bottom part (15), and the lower end of the inner part (16) is fixedly connected to the inner side surface of the bottom part (15), and a limiting groove is provided on the outer side surface of the bottom part (15). At the same time, the position of the surface of the outer part (13) relative to the limiting groove corresponds to the limiting block (14), and the inner side surface of the inner part (16) is symmetrically connected to the positioning block (12), and the positioning block (12) is slidably connected in the positioning groove provided in the inner mold (6).

2. A core mold for a pipe making machine according to claim 1, characterized in that: The inner mold (6) is of cylindrical structure as a whole, the mounting groove provided inside the inner mold (6) is of cylindrical structure, the inner mold (6) and the outer mold (2) have equal axial lengths, and the fixing frame (5) fixedly connected in the mounting groove is of herringbone structure.

3. The core mold of a pipe making machine according to claim 1, characterized in that: The outer arc surface of the inner mold (6) is provided with a plurality of groups of positioning grooves at equal intervals along the circumferential direction, the positioning grooves are in the form of long strips, and the two ends of the positioning grooves penetrate the upper and lower end surfaces of the inner mold (6), while the through hole provided in the middle of the upper surface of the inner mold (6) is in the form of a square structure.

4. The core mold of a pipe making machine according to claim 1, characterized in that: The movable plate (11) has a circular structure, the movable sleeve (9) fixedly connected to the lower surface of the movable plate (11) has a square cylindrical structure, and the horizontal cross-section of the movable sleeve (9) has an outer square inner circular structure, while the inner cavity of the movable sleeve (9) is screwed to the lifting screw rod (10) through a threaded structure, and the size of the outer side surface of the movable sleeve (9) is compatible with the size of the through hole.

5. The core mold of a pipe making machine according to claim 1, characterized in that: Four groups of fixed rods (8) are fixedly connected at equal intervals around the edge of the lower surface of the movable plate (11) in the circumferential direction, and the fixed rods (8) are all cylindrical in structure. The movable ring (7) fixedly connected to the lower end of the fixed rod (8) is in a circular ring structure, and a material injection port is provided on the upper surface of the movable ring (7).

6. The core mold of a pipe making machine according to claim 1, characterized in that: The bottom part (15) in the shaping plate (3) is in the form of a circular ring structure, the inner part (16) fixedly connected to the inner arc surface of the bottom part (15) is in the form of a cylindrical structure, and the inner arc surface of the inner part (16) is circumferentially surrounded by a plurality of groups of positioning blocks (12) fixedly connected at equal intervals, and the positioning blocks (12) are in the form of a long strip.

7. The core mold of a pipe making machine according to claim 1, characterized in that: There are two groups of outer parts (13) in the shaping plate (3), and the radial cross-sections of the two groups of outer parts (13) are both semicircular ring structures. The end faces of one group of outer parts (13) are provided with slots at equal intervals and in parallel, and the opposite positions of the end faces of the other group of outer parts (13) correspond to the connecting buckles. The two groups of outer parts (13) are connected by the buckles to form a cylindrical structure. At the same time, the limit block (14) fixedly connected to the lower end of the outer part (13) is in a semicircular ring structure, and the limit slots provided on the limit block (14) and the bottom part (15) are of compatible sizes.

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