Secondary sand shooting forming device for Glarich pump base
Through the secondary sand injection molding device of Grundfos pump seat, the main core is directly formed on the flange sand core, solving the defects caused by low assembly efficiency of the inner cavity structure of complex parts and adhesives, achieving high precision and high Production of castings of strength.
Patent Information
- Application Number
- CN202323630177.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-12-29
AI Technical Summary
In mechanical casting, the complex inner cavity structure of the part requires manual combination of multiple sand cores, resulting in many seams, unstable sizes, low efficiency, and the use of adhesives can easily lead to pore defects.
The secondary sand injection molding device of Grundfos pump seat is used to make the flange sand core through primary sand injection, and the main core is manufactured by secondary sand injection molding on the flange sand core, which is directly combined into Grundfos pump seat sand The core does not require adhesive, and uses components such as load transfer mechanism, cold core sand sprayer and air blower to achieve precise docking and hardening.
The dimensional accuracy and structural strength of the sand core are significantly improved, the manual assembly steps are reduced, and the occurrence of casting joints and pore defects are avoided.
Smart Images
Figure CN222153862U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical casting core making, in particular to a secondary sand shooting molding device for a Grundfos pump seat. Background Art
[0002] With the rapid development of the machinery manufacturing industry, the internal structure of parts is becoming more and more complex, which makes the technical level of the foundry industry continue to improve. Complex castings require multiple sand cores, which need to be manually combined together to cast the castings. This results in many seams on the castings, unstable dimensions and low efficiency.
[0003] In the prior art, when manufacturing the sand core of the Grundfos pump seat, the manual core assembly process is generally used. The flange sand core is manually assembled to the main core and fixed with an adhesive. The position accuracy of the manual core assembly is biased, and the integral airway core of the pump seat sand core will produce casting seams due to the existence of gaps. In addition, the sand core is easy to fall off the sand core during transportation and pouring. In addition, the adhesive used for core assembly has a large amount of gas emission, which is easy to produce pore defects. Utility Model Content
[0004] The utility model aims to provide a secondary sand shooting molding device for a Grundfos pump seat, which can manufacture a flange separately by a primary sand shooting, and directly mold a main core on the flange sand core by secondary sand shooting, without the need for adhesive, thereby ensuring the dimensional accuracy and strength of the sand core.
[0005] To achieve the above object, the technical solution adopted by the utility model is: a secondary sand shooting molding device for a Grundfos pump seat, comprising a frame and a cold core sand shooting machine, the frame is provided with a transfer mechanism, the sand shooting plate on the cold core sand shooting machine is connected with an upper core box, the transfer mechanism is provided with a lower core box matching the upper core box, and the transfer mechanism can drive the lower core box to rise and fall and move horizontally;
[0006] The upper core box and the lower core box are both provided with a first flange mold groove and a main core mold groove, and the main core mold groove is provided with a second flange mold groove for placing a flange.
[0007] In a preferred embodiment of the utility model, the transfer mechanism includes a screw slide arranged on the frame, a moving seat arranged on the moving end of the screw slide, and a lifting base slidably connected to the moving seat;
[0008] A screw jack is slidably connected to the frame, a screw flange end of the screw jack is connected to the lifting base, and the screw jack can drive the lifting base to lift vertically;
[0009] The lower core box is arranged on the top of the lifting base.
[0010] In a preferred embodiment of the utility model, the screw screw elevator and the servo motor on the screw screw elevator are both slidably connected to the frame through linear slide rails, and the screw screw elevator can move horizontally synchronously with the lifting base and the moving seat.
[0011] In a preferred embodiment of the utility model, a blowing trolley is arranged on the frame, the blowing trolley is connected with a blowing plate, the blowing trolley is connected with an air source, and the blowing plate can be docked with the lower core box.
[0012] In a preferred embodiment of the utility model, the gas source connected to the air blowing trolley is nitrogen.
[0013] In a preferred embodiment of the utility model, positioning strips are provided on the outer peripheries of the first flange mold groove and the main core mold groove on the lower core box.
[0014] The beneficial effects of the utility model are:
[0015] (1) The flange sand core is made by one shot sanding, and the main core sand core is made by two shot sanding on the basis of the flange sand core, so that the flange sand core and the main core sand core directly form the sand core body of the Grundfos pump seat. This device can save the steps of manual assembly of sand cores, and there is no need for adhesive to bond the flange sand core and the main core sand core, which significantly enhances the structural strength and dimensional accuracy, and will not produce casting defects such as seams and pores. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0017] Figure 1 It is a structural schematic diagram of a secondary sand-shooting molding device in a preferred embodiment of the utility model;
[0018] Figure 2 It is a structural schematic diagram of the transfer mechanism in the preferred embodiment of the utility model;
[0019] Figure 3 It is a schematic diagram of the top view of the lower core box in the preferred embodiment of the utility model;
[0020] Among them, 1. frame; 2. cold core sand shooting machine; 201, sand shooting plate; 3. upper core box; 4. lower core box; 5. first flange mold groove; 6. main core mold groove; 601, second flange mold groove; 7. screw slide; 8. moving seat; 9. lifting base; 10. screw spiral lift; 11. linear slide rail; 12. blowing trolley; 13. blowing plate; 14. positioning strip. DETAILED DESCRIPTION
[0021] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.
[0022] It should be noted that if there are directional indications (such as up, down, bottom, top, etc.) involved in this embodiment, the directional indication is only used to explain the relative position relationship, movement, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. Unless otherwise clearly specified and defined, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0023] like Figure 1-Figure 3 As shown, a secondary sand-shooting molding device for a Grundfos pump seat comprises a frame 1 and a cold core sand-shooting machine 2, a transfer mechanism is arranged on the frame 1, a sand-shooting plate 201 on the cold core sand-shooting machine 2 is connected with an upper core box 3, a lower core box 4 matching the upper core box 3 is arranged on the transfer mechanism, and the transfer mechanism can drive the lower core box 4 to rise and fall and move horizontally;
[0024] The upper core box 3 and the lower core box 4 are both provided with a first flange mold groove 5 and a main core mold groove 6. The main core mold groove 6 is provided with a second flange mold groove 601 for placing a flange.
[0025] Specifically, the first flange mold groove 5 between the upper core box 3 and the lower core box 4 is connected to form a flange cavity for flange sand core molding, and the main core mold groove 6 between the upper core box 3 and the lower core box 4 is connected to form a main core mold cavity for main core molding. At the same time, a flange cavity formed by the second flange mold groove 601 connected is reserved in the main core mold cavity, which can be used to place the flange sand core. The transfer mechanism can drive the lower core box 4 to move to dock with the upper core box 3, and the cold core sand shooting machine 2 injects a mixture of resin and sand into the flange cavity between the upper core box 3 and the lower core box 4 through the sand shooting plate 201 to perform the first sand shooting. After the flange sand core formed by the first sand shooting is separated from the upper core box 3 and the lower core box 4, the flange sand core is placed in the second flange mold groove 601 on the lower core box 4 by manual operation, and the flange sand core is changed from a horizontally placed state to an upright state, and then the transfer mechanism drives the lower core box 4 to move to dock with the upper core box 3 again, and the cold core sand shooting machine 2 injects a mixture of resin and sand into the flange cavity and the main core mold cavity between the upper core box 3 and the lower core box 4 through the sand shooting plate 201, and performs the second sand shooting. A combination of the main core sand core and the flange sand core can be directly formed in the main core mold cavity, and a flange sand core can be formed in the flange mold cavity. Subsequently, the upper core box 3 and the lower core box 4 are separated by the transfer mechanism, and the combination of the main core sand core and the flange sand core is removed, and the flange sand core is placed in the second flange mold groove 601, and the upper core box 3 and the lower core box 4 are docked again by the transfer mechanism, and sand is shot into the upper core box 3 and the lower core box 4 by the cold core sand shooting machine 2. The device can continuously manufacture the combination of flange sand core and main core sand core, and flange sand core. The device can save the steps of manually assembling sand cores, and no adhesive is needed to bond the flange sand core and the main core sand core, which significantly enhances the structural strength and dimensional accuracy, and will not produce casting defects such as seams and pores.
[0026] The cold core sand shooting machine 2 used in the above technical solution is a commonly used sand shooting machine in the prior art, which can shape the mixture of sand and resin in the mold cavity by injecting high-pressure gas.
[0027] Further, such as Figure 2 As shown, the transfer mechanism includes a screw slide 7 arranged on the frame 1, a moving seat 8 arranged on the moving end of the screw slide 7, and a lifting base 9 slidably connected to the moving seat 8;
[0028] A screw screw jack 10 is slidably connected to the frame 1, and the screw flange end of the screw screw jack 10 is connected to the lifting base 9. The screw screw jack 10 can drive the lifting base 9 to lift vertically;
[0029] The lower core box 4 is arranged on the top of the lifting base 9 .
[0030] Specifically, the screw slide 7 can drive the movable seat 8 to move horizontally, and the lifting base 9, the screw spiral elevator 10, and the lower core box 4 on the movable seat 8 can move synchronously under the drive of the screw slide 7. The screw slide 7 has high precision and carrying capacity. The movable end of the screw spiral elevator 10 is connected to the lifting base 9, which can drive the lifting base 9 to rise and fall, so that the lower core box 4 can be docked with the upper core box 3. And the screw spiral elevator 10 in the technical solution has a self-locking function, which is self-locking after the upper core box 3 is docked with the lower core box 4, which can ensure the tightness of the docking between the upper core box 3 and the lower core box 4, and can also prevent the lower core box 4 from accidentally falling and causing safety hazards. With the cooperation of the screw slide 7 and the screw spiral elevator 10, the docking work between the upper core box 3 and the lower core box 4 can be completed accurately and stably to ensure its accuracy.
[0031] Further, such as Figure 2 As shown, the screw jack 10 and the servo motor on the screw jack 10 are slidably connected to the frame 1 through the linear slide rail 11, and the screw jack 10 can move horizontally synchronously with the lifting base 9 and the moving base 8. The sliding resistance of the screw jack 10 and the servo motor is reduced, and the pressure on the screw slide 7 is shared.
[0032] In this embodiment, a blowing trolley 12 is provided on the frame 1, and the blowing trolley 12 is connected to a blowing plate 13, and the blowing trolley 12 is connected to an air source, and the blowing plate 13 can be docked with the lower core box 4. Driven by the screw slide 7 and the screw spiral elevator 10, the lower core box 4 that has completed sand shot molding can be moved to be sealed and docked with the blowing plate 13. By connecting high-pressure gas to pass between the blowing plate 13 and the lower core box 4, the efficiency of sand core hardening can be accelerated.
[0033] Further, the air source connected to the air blowing carriage 12 is nitrogen. Nitrogen can promote the hardening process of the sand core.
[0034] Furthermore, the first flange mold groove 5 and the main core mold groove 6 on the lower core box 4 are both provided with positioning strips 14 on their peripheries, which can further improve the precision of the mold jointing between the upper core box 3 and the lower core box 4 and ensure the dimensional precision of the sand core molding.
[0035] Working principle: The screw slide 7 and the screw screw elevator 10 drive the lower core box 4 to move to dock with the upper core box 3, and the cold core sand shooting machine 2 injects a mixture of resin and sand into the flange cavity between the upper core box 3 and the lower core box 4 through the sand shooting plate 201 to perform the first sand shooting. After the flange sand core formed by the first sand shooting is separated from the upper core box 3 and the lower core box 4, the flange sand core is placed in the second flange mold groove 601 on the lower core box 4 by manual operation, and the flange sand core changes from a horizontal state to an upright state. Then the transfer mechanism drives the lower core box 4 to move to dock with the upper core box 3 again, and the cold core sand shooting machine 2 injects a mixture of resin and sand into the flange cavity between the upper core box 3 and the lower core box 4 and the main core mold cavity through the sand shooting plate 201 to perform the second sand shooting. A combination of the main core sand core and the flange sand core can be directly formed in the main core mold cavity, and a flange sand core can be formed in the flange mold cavity. Then, the upper core box 3 is separated from the lower core box 4 by the transfer mechanism, and the screw slide 7 and the screw spiral elevator 10 drive the lower core box 4 to move to dock with the blow plate 13. After ensuring good air tightness, high-pressure nitrogen is connected and maintained for a period of time to accelerate the hardening process of the sand core. Then, the lower core box 4 is driven to move by the screw slide 7 and the screw spiral elevator 10, so that the combination of the main core sand core and the flange sand core can be removed, and the flange sand core can be placed in the second flange mold groove 601. Repeating the above steps again can continuously manufacture the combination of the flange sand core and the main core sand core, as well as the flange sand core. The device can save the steps of manually assembling the sand core, and at the same time, there is no need for adhesive to bond the flange sand core to the main core sand core, and its structural strength and dimensional accuracy are significantly enhanced, and no casting seams, pore defects, etc. will occur.
[0036] The above is based on the ideal embodiment of the utility model. Through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of the utility model. The technical scope of this utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.
Claims
1. A secondary sand-shooting molding device for a Grundfos pump base, comprising a frame (1) and a cold-core sand-shooting machine (2), characterized in that: The frame (1) is provided with a transfer mechanism, the sand blasting plate (201) on the cold core sand blasting machine (2) is connected to an upper core box (3), the transfer mechanism is provided with a lower core box (4) matching the upper core box (3), and the transfer mechanism can drive the lower core box (4) to move up and down and horizontally; The upper core box (3) and the lower core box (4) are both provided with a first flange mould groove (5) and a main core mould groove (6), and the main core mould groove (6) is provided with a second flange mould groove (601) in which a flange can be placed.
2. The secondary sand-shooting molding device for the Grundfos pump seat according to claim 1, characterized in that: The transfer mechanism comprises a screw slide (7) arranged on the frame (1), a moving seat (8) arranged on the moving end of the screw slide (7), and a lifting base (9) slidably connected to the moving seat (8); A lead screw screw elevator (10) is slidably connected to the frame (1), a lead screw flange end of the lead screw screw elevator (10) is connected to the lifting base (9), and the lead screw screw elevator (10) can drive the lifting base (9) to vertically lift; The lower core box (4) is arranged on the top of the lifting base (9).
3. The secondary sand-shooting molding device for the Grundfos pump seat according to claim 2, characterized in that: The screw elevator (10) and the servo motor on the screw elevator (10) are both slidably connected to the frame (1) via a linear slide rail (11), and the screw elevator (10) can move horizontally synchronously with the lifting base (9) and the moving base (8).
4. The secondary sand-shooting molding device for the Grundfos pump seat according to claim 3 is characterized in that: The frame (1) is provided with an air blowing trolley (12), the air blowing trolley (12) is connected to an air blowing plate (13), the air blowing trolley (12) is connected to an air source, and the air blowing plate (13) can be docked with the lower core box (4).
5. The secondary sand-shooting molding device for the Grundfos pump seat according to claim 4, characterized in that: The gas source connected to the air blowing trolley (12) is nitrogen.
6. The secondary sand-blasting molding device for a Grundfos pump seat according to claim 5, characterized in that: Positioning strips (14) are provided on the outer peripheries of the first flange mould groove (5) and the main core mould groove (6) on the lower core box (4).