Casting mold convenient to demold
Through the combined structure of the bracket, bottom mold, inner mold, outer mold and hole mold, combined with the connection methods such as lifting shaft, pulley and bolts, the demoulding problem of tubular prefabricated parts is solved, and a fast and accurate demoulding effect is achieved.
Patent Information
- Application Number
- CN202423019321.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-09
AI Technical Summary
In the prior art, internal demoulding of tubular preforms is difficult to achieve, which affects the demoulding accuracy and progress.
The combined structure of the bracket, bottom mold, inner mold, outer mold and hole mold is adopted. The outer mold and inner mold are detachable through the connection methods such as lifting shaft, pulley and bolts. Combined with the use of slide rails and limit blocks, the stable movement and precise demoulding of the mold are ensured.
The rapid and accurate demoulding of tubular preforms is achieved, ensuring the overall demoulding accuracy and production progress of the preforms.
Smart Images
Figure CN223477968U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of casting molds, and in particular to a casting mold that is easy to demold. Background Technology
[0002] Precast concrete block molds are molds specially customized to produce concrete products according to specific dimensions and specifications. In use, cement is usually poured into a mold, leveled, and then cured. The precast component is obtained by removing the mold. However, for tubular precast components, due to their hollow internal structure, the internal demolding process is not well resolved, which affects the overall demolding accuracy and progress of the precast component. Utility Model Content
[0003] In view of the shortcomings mentioned above in the background technology, this utility model provides a casting mold that is easy to demold.
[0004] The present invention adopts the following technical solution:
[0005] A casting mold for easy demolding, characterized in that the casting mold comprises:
[0006] support;
[0007] The bottom mold is a circular structure and is supported on the support frame by several support blocks.
[0008] An inner mold is provided inside the bottom mold and is raised and lowered. The outer circumferential surface of the inner mold is attached to the inner circumferential surface of the bottom mold, and the interior of the inner mold is hollow to form a raising and lowering groove.
[0009] The outer mold includes a semi-circular mold sleeve, and two semi-circular mold sleeves are provided. Both semi-circular mold sleeves are mounted on the bracket and can move left and right. The two semi-circular mold sleeves are located on the left and right sides of the bottom mold, respectively. A lifting hole is provided through the outer circumference of the semi-circular mold sleeve. A lifting shaft is detachably provided in the lifting hole and extends out of the inner circumference of the semi-circular mold sleeve.
[0010] The die has two holes, which are respectively located on the inner circumference of the two semi-circular mold sleeves, and the die is detachably connected to the semi-circular mold sleeve.
[0011] When the splicing surfaces of the two semi-circular mold sleeves are fitted together to form a complete cylindrical outer mold, the cylindrical outer mold is fitted on the outside of the bottom mold, the inner circumference of the cylindrical outer mold is fitted with the outer circumference of the bottom mold, and the hole mold is fitted with the outer circumference of the inner mold. A preform is cast in the space enclosed by the cylindrical outer mold, the bottom mold, the inner mold and the hole mold.
[0012] As a further improvement, fixing holes are provided on the splicing surfaces of the two semi-circular mold sleeves, and the fixing holes on the two semi-circular mold sleeves are connected and fixed by bolts.
[0013] As a further improvement, the bottom surface of the semi-circular mold sleeve is provided with several pulleys, and the upper surface of the bracket is provided with several slide rails. When the semi-circular mold sleeve moves left and right on the bracket, the pulleys move left and right on the slide rails.
[0014] As a further improvement, the upper surface of the semi-circular mold sleeve is provided with a locking block and a locking groove at both ends, the locking block and the locking groove are adapted to each other, and the locking block is embedded in the locking groove between the two semi-circular mold sleeves that are spliced together.
[0015] As a further improvement, the outer surface of the semi-circular mold sleeve is provided with an observation platform for the observer to stand on.
[0016] As a further improvement, the outer surface of the semi-circular mold sleeve is provided with a handle, which is used to push and pull the semi-circular mold sleeve.
[0017] As a further improvement, the support is provided with a support plate located below the bottom mold. A lead screw is provided on the support plate and rotates on the support plate. The lead screw is threadedly connected to the support plate. The top end of the lead screw rotates on a truss. Both ends of the truss are connected to the lifting groove wall of the inner mold.
[0018] As a further improvement, the support plate is provided with a guide rod that extends upward through the truss.
[0019] As a further improvement, the bottom surface of the inner mold is provided with a plurality of limiting blocks, which extend out of the outer circumference of the inner mold and are positioned to avoid the support block.
[0020] As a further improvement, the die is provided with a mounting rod, and the semi-circular die sleeve has a mounting hole on its circumferential surface. The mounting rod passes through the mounting hole and is threadedly connected to the nut.
[0021] As can be seen from the above description of the structure of this utility model, compared with the prior art, this utility model has the following advantages: During demolding, first rotate the lifting shaft to disengage it from the precast part and the semi-circular mold sleeve, then separate the hole mold from the semi-circular mold sleeve, separate the two semi-circular mold sleeves, and then move the semi-circular mold sleeves to both sides to disengage them from the surface of the precast part, thus completing the disassembly and demolding of the outer mold. Then move the inner mold downward to disengage it from the surface of the precast part, quickly completing the demolding of the inner mold. Then reinstall the lifting shaft onto the precast part. At this time, the lifting chain or rope can be fixed to the lifting shaft of the precast part to facilitate the lifting of the precast part. After the precast part is lifted, it is completely separated from the bottom mold and the inner mold. Finally, remove the hole mold and the lifting shaft from the precast part, and then fill the reserved hole of the lifting shaft. This quickly completes the demolding of the precast part, ensuring the overall demolding accuracy and progress of the precast part. Attached Figure Description
[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.
[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the support.
[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the inner mold.
[0025] Figure 4 This is a three-dimensional structural diagram of the support frame, bottom mold, and inner mold.
[0026] Figure 5 This is a three-dimensional structural diagram of the outer mold and the hole mold.
[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of the die.
[0028] Figure 7 This is a schematic diagram of the three-dimensional structure of the outer mold formed by splicing together two semi-circular mold halves.
[0029] Figure 8 A schematic diagram of the three-dimensional structure of the precast component after casting.
[0030] Figure 9 This is a schematic diagram of the three-dimensional structure of the precast component after it has been lifted and demolded.
[0031] Figure 10 This is an exploded structural diagram of the prefabricated component and the lifting shaft.
[0032] Figure 11 This is a schematic diagram of the internal structure of a ratchet wrench. Detailed Implementation
[0033] The specific embodiments of this utility model are described below with reference to the accompanying drawings.
[0034] As attached Figure 1 As shown, a casting mold that facilitates demolding includes a support 1, a bottom mold 2, an inner mold 3, an outer mold 4, and a hole mold 5.
[0035] As attached Figure 1 , Figure 7 and Figure 8 As shown, the bottom mold 2 has a circular ring structure. It is supported above the bracket 1 by several support blocks 11. The bottom mold 2 contains an inner mold 3, the outer circumference of which fits against the inner circumference of the bottom mold 2. Simultaneously, an outer mold 4 is provided on the outside of the bottom mold 2. The outer mold 4 is formed by splicing two semi-circular mold sleeves 41, located on the left and right sides of the bottom mold 2 respectively. When the splicing surfaces of the two semi-circular mold sleeves 41 are joined to form a complete cylindrical outer mold 4, the cylindrical outer mold 4 fits onto the outside of the bottom mold 2. The inner circumference of the cylindrical outer mold 4 fits against the outer circumference of the bottom mold 2, and the perforated molds 5 on the inner circumference of the two semi-circular mold sleeves 41 fit against the outer circumference of the inner mold 3. Then, casting is performed within the space enclosed by the cylindrical outer mold 4, the bottom mold 2, the inner mold 3, and the perforated molds 5 to form a precast part 7. The process is an integrated casting, with standardized workmanship and a smooth inner wall.
[0036] Among them, as attached Figure 2 , Figure 5 and Figure 7 As shown, both semi-circular mold sleeves 41 are mounted on the support 1 and can move left and right. Specifically, the bottom surface of the semi-circular mold sleeve 41 is provided with several pulleys 45, and the upper surface of the support 1 is provided with several slide rails 16. When the semi-circular mold sleeve 41 moves left and right on the support 1, the pulleys 45 move left and right on the slide rails 16. The slide rails 16 limit the movement of the pulleys 45, allowing the semi-circular mold sleeve 41 to move smoothly left and right on the support 1. During casting, the two semi-circular mold sleeves 41 are moved towards each other until their splicing surfaces are fitted together, forming a complete cylindrical outer mold 4. Since both semi-circular mold sleeves 41 have fixing holes 42 on their splicing surfaces, after the two semi-circular mold sleeves 41 are joined, the fixing holes 42 on the two semi-circular mold sleeves 41 can be connected and fixed by bolts 8, thereby fixing the cylindrical outer mold 4 to the outer circumference of the bottom mold 2. During demolding, first remove bolt 8, then move the semi-circular mold sleeve 41 to both sides to detach it from the surface of the preform 7, facilitating the disassembly and demolding of the outer mold 4. Simultaneously, the upper surface of the semi-circular mold sleeve 41 has a locking block 44 and a locking groove 43 at each end. Both the locking block 44 and the locking groove 43 are triangular and fit together. Between the two semi-circular mold sleeves 41 being joined, the locking block 44 is embedded in the locking groove 43. The inner wall of the locking groove 43 provides limiting and guiding effects on the side of the locking block 44, ensuring that the two semi-circular mold sleeves 41 are properly joined, thus guaranteeing the casting quality of the preform 7.
[0037] Additionally, as attached Figure 5 as well as Figures 7 to 10 As shown, a lifting hole 46 penetrates the outer circumference of the semi-circular mold sleeve 41. A lifting shaft 6 is detachably located within the lifting hole 46. Specifically, the lifting shaft 6 is a threaded rod, and the lifting hole 46 and the lifting shaft 6 are threadedly connected. Before casting, the lifting shaft 6 is installed in the lifting hole 46, extending beyond the inner circumference of the semi-circular mold sleeve 41. At this time, one end of the lifting shaft 6 is embedded in the cast precast part 7. After casting is completed, before demolding, the lifting shaft 6 is rotated to detach it from the precast part 7 and the semi-circular mold sleeve 41. At this time, a threaded hole 71 is reserved on the precast part 7. Then, the semi-circular mold sleeve 41 is moved for demolding. When it is necessary to lift the precast part 7, the lifting shaft 6 is screwed back into the reserved threaded hole 71 on the precast part 7. At this time, a lifting chain or rope can be fixed to the lifting shaft 6 of the precast part 7, thereby facilitating the lifting of the precast part 7. Further details are attached. Figure 5 As shown, an observation platform 49 and a handle 48 can be provided on the outer surface of the semi-circular mold sleeve 41. The observation platform 49 is used for the observer to stand and facilitate the observation of the casting and curing progress of the precast part 7. The handle 48 is used to push and pull the semi-circular mold sleeve 41 to facilitate its movement.
[0038] It is worth mentioning that, as shown in the attached document Figures 1 to 4 As shown, the inner mold 3 is located inside the bottom mold 2 and is lifted and lowered. The inner mold 3 has a hollow interior forming a lifting groove 31, reducing its weight and facilitating its lifting and lowering. Specifically, the support 1 has a support plate 12 located below the bottom mold 2. A lead screw 13 is mounted on the support plate 12 and rotates thereon. The lead screw 13 is threadedly connected to the support plate 12, and its top end is mounted on a truss 32 via a bearing. Both ends of the truss 32 are connected to the walls of the lifting groove 31 of the inner mold 3. In use, rotating the lead screw 13 causes the truss 32 to lift and lower the inner mold 3 inside the bottom mold 2, facilitating demolding. Furthermore, the support plate 12 has a guide rod 14 that extends upwards through the truss 32. The guide rod 14 effectively guides the lifting and lowering of the truss 32 and the inner mold 3, preventing the inner mold 3 from rotating with the lead screw 13 and ensuring smooth lifting, lowering, and demolding. Meanwhile, the bottom surface of the inner mold 3 is provided with several limiting blocks 33, which extend beyond the circumferential outer surface of the inner mold 3. When the inner mold 3 moves upward until the limiting blocks 33 abut against the bottom surface of the bottom mold 2, the inner mold 3 rises to its designated position. The limiting blocks 33 can limit the rise of the inner mold 3, preventing it from rising excessively or not rising to its designated position, thus affecting the casting dimensions of the subsequent precast part 7. During the process, since the limiting blocks 33 are set to avoid the support blocks 11, it can prevent the limiting blocks 33 from hitting the support blocks 11 when the inner mold 3 rises.
[0039] Among them, as attached Figure 3 and Figure 11 As shown, the lead screw 13 is driven to rotate by a ratchet wrench 15 located at the bottom end of the lead screw 13. The ratchet wrench 15 includes a wrench body 151. A rotating ratchet 153 is provided in the accommodating space 152 at the head of the wrench body 151. A pawl 154 is provided on each side of the ratchet 153. The pawl 154 is connected to the inner wall of the accommodating space 152 by a return spring 155. A rotatable switching block 156 is provided between the two pawls 154. The switching block 156 rotates to switch the pawls 154, so that the two pawls 154 alternately engage with the ratchet 153. The bottom end of the lead screw 13 passes through the support plate 12 and the wrench body 151 and is fixedly connected to the axis of the ratchet 153. The wrench body 151 is located on the outer side of the bottom of the lead screw 13 and rotates by bearings. In use, first rotate the switching block 156 so that the pawl 154 on one side engages with the ratchet 153. Then, put the rocker arm on the outside of the tail of the wrench body 151. The rocker arm drives the wrench body 151 to rotate. During the process, the engagement characteristics of the pawl 154 and the ratchet 153 are utilized so that when the rocker arm swings clockwise, the pawl inserts into the teeth of the ratchet and drives the lead screw 13 to rotate. At this time, the inner mold 3 rises. When the rocker arm swings counterclockwise, the pawl slides on the teeth of the ratchet, and the ratchet, lead screw 13 and inner mold 3 remain stationary. Thus, the inner mold 3 is raised by swinging the rocker arm left and right. When it is necessary to lower the inner mold 3, simply rotate the switching block 156 to separate the pawl 154 on that side from the ratchet 153. At this time, the pawl 154 on the other side engages with the ratchet 153 under the action of the return spring 155. When the rocker arm is swung left and right, the rocker arm swings counterclockwise, the pawl inserts into the teeth of the ratchet and drives the lead screw 13 to rotate, and the inner mold 3 lowers. When the rocker arm swings clockwise, the pawl slides on the teeth of the ratchet, and the ratchet, lead screw 13 and inner mold 3 remain stationary.
[0040] In addition, as attached Figures 5 to 7 as well as Figure 9 As shown, the die 5 and the semi-circular mold sleeve 41 are detachably connected. Specifically, the die 5 is equipped with an installation rod 51, and the semi-circular mold sleeve 41 has an installation hole 47 on its circumferential surface. The installation rod 51 passes through the installation hole 47 and is threadedly connected to the nut 52. The die 5 is then installed and fixed on the semi-circular mold sleeve 41 by the nut 52 for casting. After the lifting shaft 6 is removed from the precast part 7 and the semi-circular mold sleeve 41, the nut 52 is unscrewed first, and then the outer mold 4 is moved for demolding. At this time, the die 5 is removed from the outer mold 4, but the die 5 remains inside the precast part 7. Then, the die 5 can be removed from the precast part 7. Alternatively, the die 5 and the installation hole 47 on the semi-circular mold sleeve 41 can be omitted depending on the actual casting specifications of the precast part 7 in production.
[0041] In summary, when using this utility model, the hole mold 5 is first installed on the inner wall of the semi-circular mold sleeve 41, and then the two semi-circular mold sleeves 41 are moved so that the two semi-circular mold sleeves 41 are spliced on the outside of the bottom mold 2 to form a complete cylindrical outer mold 4. Then, the lifting shaft 6 is installed in the lifting hole 46 so that the lifting shaft 6 extends out of the inner surface of the semi-circular mold sleeve 41. Then, the precast part 7 is formed in the space enclosed by the cylindrical outer mold 4, the bottom mold 2, the inner mold 3 and the hole mold 5. The process is integrated casting, with standard workmanship and smooth inner wall. At this time, one end of the lifting shaft 6 is embedded in the cast precast part 7.
[0042] During demolding, first rotate the lifting shaft 6 to disengage it from the preform 7 and the semi-circular mold sleeve 41. Then, separate the hole mold 5 from the semi-circular mold sleeve 41, and then separate the two semi-circular mold sleeves 41. Next, move the semi-circular mold sleeves 41 to both sides to detach them from the surface of the preform 7, thus completing the disassembly and demolding of the outer mold 4. Then, move the inner mold 3 downwards to detach it from the surface of the preform 7, quickly completing the demolding of the inner mold 3. After demolding, the lifting shaft 6 is reattached to the precast component 7. At this time, the lifting chain or rope can be fixed to the lifting shaft 6 of the precast component 7 to facilitate the lifting of the precast component 7. After being lifted, the precast component 7 is completely separated from the bottom mold 2 and the inner mold 3. Finally, the hole mold 5 and the lifting shaft 6 are removed from the precast component 7, and the reserved hole of the lifting shaft 6 is filled in. This quickly completes the demolding of the precast component 7 and ensures the overall demolding accuracy and progress of the precast component 7.
[0043] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.
Claims
1. A casting mold for easy demolding, characterized in that, The casting mold includes: support; The bottom mold is a circular structure and is supported on the support frame by several support blocks. An inner mold is provided inside the bottom mold and is raised and lowered. The outer circumferential surface of the inner mold is attached to the inner circumferential surface of the bottom mold, and the interior of the inner mold is hollow to form a raising and lowering groove. The outer mold includes a semi-circular mold sleeve, and two semi-circular mold sleeves are provided. Both semi-circular mold sleeves are mounted on the bracket and can move left and right. The two semi-circular mold sleeves are located on the left and right sides of the bottom mold, respectively. A lifting hole is provided through the outer circumference of the semi-circular mold sleeve. A lifting shaft is detachably provided in the lifting hole and extends out of the inner circumference of the semi-circular mold sleeve. The die has two holes, which are respectively located on the inner circumference of the two semi-circular mold sleeves, and the die is detachably connected to the semi-circular mold sleeve. When the splicing surfaces of the two semi-circular mold sleeves are fitted together to form a complete cylindrical outer mold, the cylindrical outer mold is fitted on the outside of the bottom mold, the inner circumference of the cylindrical outer mold is fitted with the outer circumference of the bottom mold, and the hole mold is fitted with the outer circumference of the inner mold. A preform is cast in the space enclosed by the cylindrical outer mold, the bottom mold, the inner mold and the hole mold.
2. The casting mold for easy demolding as described in claim 1, characterized in that: Both of the aforementioned semi-circular mold sleeves have fixing holes on their splicing surfaces, and the fixing holes on the two semi-circular mold sleeves are connected and fixed by bolts.
3. The casting mold for easy demolding as described in claim 1, characterized in that: The bottom surface of the semi-circular mold sleeve is provided with several pulleys, and the upper surface of the bracket is provided with several slide rails. When the semi-circular mold sleeve moves left and right on the bracket, the pulleys move left and right on the slide rails.
4. A casting mold for easy demolding as described in claim 1, characterized in that: The upper surface of the semi-circular mold sleeve is provided with a locking block and a locking groove at both ends. The locking block and the locking groove are compatible, and the locking block is embedded in the locking groove between the two semi-circular mold sleeves that are spliced together.
5. A casting mold for easy demolding as described in claim 1, characterized in that: The outer surface of the semi-circular mold sleeve is provided with an observation platform for the observer to stand on.
6. A casting mold for easy demolding as described in claim 1, characterized in that: The outer surface of the semi-circular mold sleeve is provided with a handle, which is used to push and pull the semi-circular mold sleeve.
7. A casting mold for easy demolding as described in claim 1, characterized in that: The support is provided with a support plate located below the bottom mold. A lead screw is provided on the support plate and rotates on the support plate. The lead screw is threadedly connected to the support plate. The top end of the lead screw rotates on a truss. Both ends of the truss are connected to the lifting groove wall of the inner mold.
8. A casting mold for easy demolding as described in claim 7, characterized in that: The support plate is provided with a guide rod that extends upward through the truss.
9. A casting mold for easy demolding as described in claim 1, characterized in that: The bottom surface of the inner mold is provided with a plurality of limiting blocks, which extend out of the outer circumference of the inner mold and are positioned to avoid the support block.
10. A casting mold for easy demolding as described in claim 1, characterized in that: The die is provided with an installation rod, and an installation hole is opened on the circumferential surface of the semi-circular die sleeve. The installation rod passes through the installation hole and is threadedly connected to the nut.