Mold for die casting elevator counterweight and die casting apparatus

Abstract

The utility model discloses a kind of die and die casting equipment for elevator counterweight block pressure casting, it is related to elevator counterweight block technical field, wherein, die for elevator counterweight block pressure casting includes rack, bottom plate and control panel, rack includes support plate, and the support surface of support plate is opened with slide opening, and slide opening circumferential side is equipped with profiled baffle, bottom plate is rotatably connected support plate, when bottom plate is in unloading state, bottom plate is inclined to the side away from profiled baffle relative support surface;When bottom plate is in pressure casting state, bottom plate is parallel with support plate, by sliding control panel, bottom plate is switched between unloading state and pressure casting state;Demoulding only needs to slide control panel, bottom plate can be driven from pressure casting state to switch to inclined unloading state, and after molding, counterweight block can be automatically slid from inclined bottom plate under the action of its gravity, setting collecting device can be completed collection, greatly reduce the labor intensity of worker, and avoid the risk of damaging product or die due to violent demoulding.

Description

Technical Field

[0001] This utility model relates to the field of elevator counterweight technology, and in particular to a die-casting mold and die-casting equipment for elevator counterweights. Background Technology

[0002] In the manufacturing of elevator counterweights, die casting using metal molds is currently the most common method. However, existing mold structures have revealed several significant defects in practical applications, hindering production efficiency and economic benefits.

[0003] The primary problem lies in the difficulty of demolding. Traditional molds are mostly integral or fixed structures. After die casting, the formed counterweight block generates significant adhesion and frictional resistance between itself and the mold cavity wall, making demolding extremely inconvenient. Operators often need to use heavy machinery or frequent hammering to demold, which not only greatly increases the labor intensity of workers, extends the production cycle of individual workpieces, and reduces production efficiency, but also poses a risk of damaging the product or mold due to improper operation, and may even lead to safety accidents. The formed counterweight block is also difficult to remove. Utility Model Content

[0004] The main purpose of this utility model is to provide a die-casting mold and die-casting equipment for elevator counterweights, aiming to improve production efficiency.

[0005] To achieve the above objectives, the present invention provides a die-casting mold for elevator counterweights, comprising: A frame, the frame including a support plate, the support surface of the support plate having a sliding opening, and the sliding opening being surrounded by a shaped baffle; A base plate, which is rotatably connected to the support plate, is capable of switching between a die-casting state and a block-unloading state; When the base plate is in the unloading state, the base plate is tilted relative to the support surface on the side away from the forming baffle. When the base plate is in the die-casting state, the base plate is parallel to the support plate and flush with the support surface; A control board is slidably connected to the frame and located on the side of the frame away from the forming baffle. The control board abuts against the side of the base plate away from the forming baffle. By sliding the control board, the base plate can be switched between the unloading state and the die-casting state.

[0006] In one embodiment, the forming baffle includes a first baffle, a second baffle, a third baffle, and a fourth baffle connected end to end in sequence; The first baffle, the second baffle, the third baffle, and the fourth baffle together form a die-casting cavity; The first baffle is slidably connected to the support plate, and the first baffle is located on the side of the sliding opening away from the rotating connection between the bottom plate and the frame.

[0007] In one embodiment, the control plate is parallel to and attached to the support plate; The base plate is fixedly connected to two limiting slides, the limiting slides having an L-shaped cross-section, and the two limiting slides are arranged facing each other on both sides of the control plate; The limiting slide includes a support portion, and the support portion and the base plate are respectively located on opposite sides of the control plate to clamp the control plate; When the base plate is in the die-casting state, the support plate is in contact with the surface of the base plate.

[0008] In one embodiment, the limiting slide is rotatably connected to a lead screw, and the control plate sidewall is provided with a sliding protrusion, the sliding protrusion being threadedly connected to the lead screw; The extension direction of the lead screw is consistent with the extension direction of the limiting slide, so as to control the control plate to move along the extension direction of the lead screw.

[0009] In one embodiment, the control plate is provided with sliding protrusions on both opposite side walls, and the two limiting slides are rotatably connected to the lead screw.

[0010] In one embodiment, the support plate is fixedly connected to a driving member, and the driving rod of the driving member is fixedly connected to the first baffle to drive the first baffle to move along the extension direction of the second baffle.

[0011] In one embodiment, the opposing sidewalls of the second baffle and the fourth baffle are both recessed to form limiting portions, and the two limiting portions respectively abut against the opposing sidewalls of the first baffle.

[0012] In one embodiment, the control plate is provided with an arc-shaped abutment portion for smoothly abutting the base plate.

[0013] In one embodiment, the frame is provided with a collecting plate. When the base plate is in the unloading state, the opening end of the base plate abuts against the collecting plate so that the counterweight slides onto the collecting plate.

[0014] This utility model also proposes a die-casting device, which includes the above-mentioned mold for die-casting elevator counterweights.

[0015] The technical solution of this utility model controls the rotation of the base plate by sliding the control plate. During demolding, simply sliding the control plate drives the base plate to switch from the die-casting state to the tilted unloading state. The formed counterweight blocks will automatically slide off the tilted base plate under their own weight. A collection device can be set up to collect them, completely eliminating the reliance on large mechanical external force or manual knocking in the traditional method. This process saves time and labor, greatly reduces the labor intensity of workers, and avoids the risk of damaging the product or mold due to violent demolding. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of an embodiment of the mold for die-casting elevator counterweights provided by this utility model; Figure 2 A schematic diagram of the bottom of a die-casting mold for elevator counterweights; Figure 3 A partial sectional view of the mold used for die-casting elevator counterweights; Figure 4 This is a schematic diagram of the structure when the base plate is in the die-casting state.

[0018] Explanation of icon numbers: 1. Frame; 11. Support plate; 111. Slide outlet; 121. First baffle; 122. Second baffle; 123. Third baffle; 124. Fourth baffle; 125. Limiting part; 2. Base plate; 21. Limiting slide; 211. Support part; 22. Lead screw; 3. Control board; 31. Sliding protrusion; 32. Arc-shaped abutment part; 4. Driving component; 41. Driving rod; 5. Collecting plate; 6. Drive motor.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] In the manufacturing of elevator counterweights, die casting using metal molds is currently the most common method. However, existing mold structures have revealed several significant defects in practical applications, hindering production efficiency and economic benefits.

[0024] The primary problem lies in the difficulty of demolding. Traditional molds are mostly integral or fixed structures. After die casting, the formed counterweight block generates significant adhesion and frictional resistance between itself and the mold cavity wall, making demolding extremely inconvenient. Operators often need to use heavy machinery or frequent hammering to demold, which not only greatly increases the labor intensity of workers, extends the production cycle of individual workpieces, and reduces production efficiency, but also poses a risk of damaging the product or mold due to improper operation, and may even lead to safety accidents. The formed counterweight block is also difficult to remove.

[0025] This utility model proposes a die-casting mold for elevator counterweights.

[0026] Please see Figures 1 to 4 In one embodiment of this utility model, the die-casting mold for the elevator counterweight includes: The frame 1 includes a support plate 11, the support surface of the support plate 11 has a sliding opening 111, and the sliding opening 111 is surrounded by a shaped baffle. The base plate 2 is rotatably connected to the support plate 11, and the base plate 2 can switch between the die-casting state and the unloading state; When the base plate 2 is in the unloading state, the base plate 2 is tilted relative to the support surface on the side away from the forming baffle. When the base plate 2 is in the die-casting state, the base plate 2 is parallel to the support plate 11 and flush with the support surface; Control plate 3 is slidably connected to the frame 1 and located on the side of the frame 1 away from the forming baffle. The control plate 3 abuts against the side of the bottom plate 2 away from the forming baffle. By sliding the control plate 3, the bottom plate 2 can switch between the unloading state and the die-casting state. The technical solution of this utility model controls the rotation of the base plate 2 by sliding the control plate 3. During demolding, simply sliding the control plate 3 drives the base plate 2 from the die-casting state to the tilted unloading state. The formed counterweight block will automatically slide off the tilted base plate 2 under its own weight. A collection device can be set up to collect the counterweight block. This completely eliminates the reliance on large mechanical external force or manual knocking in the traditional method. This process saves time and effort, greatly reduces the labor intensity of workers, and avoids the risk of damaging the product or mold due to violent demolding.

[0027] like Figure 1 As shown, the forming baffle includes a first baffle 121, a second baffle 122, a third baffle 123 and a fourth baffle 124 connected end to end in sequence; The first baffle 121, the second baffle 122, the third baffle 123, and the fourth baffle 124 together form a die-casting cavity; The first baffle 121 is slidably connected to the support plate 11, and the first baffle 121 is located on the side of the sliding opening 111 away from the rotatable connection between the bottom plate 2 and the frame 1.

[0028] It should be noted that the shaped counterweight will tilt relative to the support plate 11 when it falls. At the beginning of the tilt, the projected area of ​​the counterweight on the support plate 11 will increase. If the shaped baffle is fixed, the counterweight will not easily tilt. Therefore, by sliding the first baffle 121, the necessary physical space is provided for the tilt and movement of the counterweight, thereby ensuring that the counterweight can start and complete the falling process smoothly by its own weight without any obstruction.

[0029] Optionally, the cross-sectional area of ​​the sliding opening 111 is larger than the cross-sectional area of ​​the counterweight to prevent the counterweight from getting stuck in the sliding opening 111.

[0030] Furthermore, the cross-sectional area of ​​the sliding opening 111 is greater than the maximum projected area of ​​the counterweight on the support plate 11.

[0031] like Figure 4 As shown, the control board 3 is parallel to and fits against the support plate 11; The base plate 2 is fixedly connected to two limiting slides 21. The cross-section of the limiting slides 21 is L-shaped, and the two limiting slides 21 are arranged facing each other on both sides of the control plate 3. The limiting slide 21 includes a support part 211, and the support part 211 and the base plate 2 are respectively located on opposite sides of the control plate 3 to clamp the control plate 3; When the base plate 2 is in the die-casting state, the support plate 11 is in contact with the surface of the base plate 2.

[0032] Understandably, during die casting, the material is first placed into the die casting cavity, and then the die casting machine is started to perform die casting. In this step, a lot of pressure is applied to the base plate 2. The movement direction of the control plate 3 is perpendicular to the pressure direction of the die casting machine. The support plate 11 can effectively support the base plate 2 to ensure the smooth progress of the die casting process.

[0033] Furthermore, the support plate 11 and the base plate 2 are in contact, which can prevent stress concentration and ensure production safety.

[0034] It should be noted that the L-shaped limiting slides 21 are arranged facing each other to guide the movement of the control plate 3. When the control plate 3 slides, both sides of the control plate 3 are covered by the limiting slides 21, ensuring that the control plate 3 can only slide smoothly along a predetermined straight trajectory without deviation or jamming. This ensures that the base plate 2 can accurately and reliably switch between the two predetermined positions of the die-casting state and the unloading state, with high repeatability.

[0035] It is understood that the moving direction of the control plate 3 is eccentrically set with respect to the rotation axis of the base plate 2, so as to drive the base plate 2 to rotate.

[0036] It should be noted that the two limiting slides 21 are also located on both sides of the base plate 2 to avoid obstructing the base plate 2 from rotating.

[0037] like Figure 2 As shown, the limiting slide 21 is rotatably connected to the lead screw 22, and the control plate 3 has a sliding protrusion 31 on its side wall, which is threadedly connected to the lead screw 22. The extension direction of the lead screw 22 is consistent with the extension direction of the limiting slide 21, so as to control the control plate 3 to move along the extension direction of the lead screw 22.

[0038] It is immediately apparent that the lead screw 22 itself possesses self-locking characteristics and poor motion reversibility. This means that in any position, especially during unloading, when a tilt angle needs to be maintained, the control plate 3 can be reliably locked, preventing accidental movement due to vibration or external forces, thus ensuring the safety and stability of the production process. Simultaneously, the lead screw 22 has high transmission precision, enabling accurate control of the tilting angle and final position of the base plate 2.

[0039] It is understood that the base plate 2 includes a rotating end rotatably connected to the support plate 11 and an opening / closing end away from the rotating end. When the control plate 3 moves towards the opening / closing end, the tilt angle of the base plate 2 relative to the support plate 11 will gradually decrease until it is parallel to the control plate 3. Conversely, when the control plate 3 moves away from the opening / closing end, the tilt angle of the base plate 2 relative to the support plate 11 will gradually increase due to the weight of the counterweight and the weight of the base plate 2 itself.

[0040] like Figure 3 As shown, the control plate 3 has sliding protrusions 31 on both sides of the control plate 3, and the two limiting slides 21 are rotatably connected to the lead screws 22.

[0041] It is understood that the identical lead screw 22 drive mechanisms are symmetrically arranged on both sides of the control plate 3 to ensure that the driving force applied to both sides of the control plate 3 is completely balanced and synchronized. This avoids the phenomenon that the control plate 3 may become skewed, twisted or deformed, or stuck due to one-sided friction with the limiting slide 21 during movement, which may be caused by one-sided drive. This makes the sliding of the control plate 3 and the flipping action of the base plate 2 extremely stable, smooth and reliable.

[0042] In one embodiment, the frame 1 is fixedly connected to two drive motors 6, which are used to drive the two lead screws 22 to rotate synchronously, so as to control the control board 3.

[0043] Optionally, the support plate 11 is fixedly connected to a driving member 4, and the driving rod 41 of the driving member 4 is fixedly connected to the first baffle 121 so as to drive the first baffle 121 to move along the extension direction of the second baffle 122.

[0044] It is understood that the driving component 4 can control the first baffle 121 to move along a preset trajectory, and ensure that the first baffle 121 will not deviate during die casting, thus ensuring the smooth progress of die casting.

[0045] In one embodiment, the driving component 4 is a pneumatic pump.

[0046] like Figure 1As shown, the second baffle 122 and the fourth baffle 124 have concave sidewalls that form limiting portions 125, and the two limiting portions 125 respectively abut against the opposite sidewalls of the first baffle 121.

[0047] Understandably, when the first baffle 121 is closed, the two side walls of the first baffle 121 abut tightly against the two limiting parts 125, effectively transmitting and distributing the material pressure acting on the first baffle 121 during the die-casting process to the two fixed side baffles, the second baffle 122 and the fourth baffle 124. This greatly enhances the bending stiffness of the first baffle 121 and prevents it from undergoing inward elastic deformation. At the same time, this tight fit also greatly improves the sealing performance of the mold closing, effectively reducing the risk of material leakage from the joints.

[0048] Furthermore, since the limiting part 125 is recessed, when the first baffle 121 moves a certain distance, it will abut against the side wall of the limiting part 125 to limit the movement range of the first baffle 121 and ensure that each counterweight produced has the same specifications.

[0049] Optionally, the control plate 3 is provided with an arc-shaped abutment portion 32 for smoothly abutting the base plate 2.

[0050] It should be noted that without the arc-shaped contact part 32, the control plate 3 and the base plate 2 are in surface contact only when they are parallel. At other times, one side corner of the control plate 3 contacts the base plate 2, resulting in greater frictional resistance and wear.

[0051] It is understandable that by setting the arc-shaped contact part 32, the sudden change of lever arm, impact or jamming that may occur when the sharp corners are contacted are avoided, making the entire process of starting, flipping and stopping the base plate 2 more stable.

[0052] Optionally, the frame 1 is provided with a collection plate 5. When the base plate 2 is in the unloading state, the opening end of the base plate 2 abuts against the collection plate 5 so that the counterweight slides to the collection plate 5.

[0053] Understandably, after the formed counterweight slides from the base plate 2 to the collecting plate 5, it can be flipped and closed to allow for the die casting of the next counterweight. The collecting plate 5 provides a temporary storage space for the formed counterweight, making it easy for operators to pick up and move it. Furthermore, by making the base plate 2 and the collecting plate 5 smoothly contact each other, a seamless transition slide is created for the counterweight from the mold to the collecting device, preventing chipping, scratches, or deformation caused by collisions, and ensuring product quality and appearance integrity.

[0054] In some embodiments, limiting strips are provided on both sides of the collecting plate 5 to ensure that the counterweight slides down in a preset direction.

[0055] This utility model also proposes a die-casting equipment, which includes a die for casting elevator counterweights. The specific structure of the die for casting elevator counterweights is as described in the above embodiments. Since this die-casting equipment adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0056] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A die-casting mold for elevator counterweights, characterized in that, include: A frame, the frame including a support plate, the support surface of the support plate having a sliding opening, and the sliding opening being surrounded by a shaped baffle; A base plate, which is rotatably connected to the support plate, is capable of switching between a die-casting state and a block-unloading state; When the base plate is in the unloading state, the base plate is tilted relative to the support surface on the side away from the forming baffle. When the base plate is in the die-casting state, the base plate is parallel to the support plate and flush with the support surface; A control board is slidably connected to the frame and located on the side of the frame away from the forming baffle. The control board abuts against the side of the base plate away from the forming baffle. By sliding the control board, the base plate can be switched between the unloading state and the die-casting state.

2. The die-casting mold for elevator counterweights as described in claim 1, characterized in that, The forming baffle includes a first baffle, a second baffle, a third baffle, and a fourth baffle connected end to end in sequence; The first baffle, the second baffle, the third baffle, and the fourth baffle together form a die-casting cavity; The first baffle is slidably connected to the support plate, and the first baffle is located on the side of the sliding opening away from the rotating connection between the bottom plate and the frame.

3. The die-casting mold for elevator counterweights as described in claim 2, characterized in that, The control board is parallel to and fitted with the support plate; The base plate is fixedly connected to two limiting slides, the limiting slides having an L-shaped cross-section, and the two limiting slides are arranged facing each other on both sides of the control plate; The limiting slide includes a support portion, and the support portion and the base plate are respectively located on opposite sides of the control plate to clamp the control plate; When the base plate is in the die-casting state, the support plate is in contact with the surface of the base plate.

4. The die-casting mold for elevator counterweights as described in claim 3, characterized in that, The limiting slide is rotatably connected to a lead screw, and the control plate sidewall is provided with a sliding protrusion, which is threadedly connected to the lead screw. The extension direction of the lead screw is consistent with the extension direction of the limiting slide, so as to control the control plate to move along the extension direction of the lead screw.

5. The die-casting mold for elevator counterweights as described in claim 4, characterized in that, The control panel is provided with sliding protrusions on both sides of the control panel, and the two limiting slides are rotatably connected to the lead screws.

6. The die-casting mold for elevator counterweights as described in claim 2, characterized in that, The support plate is fixedly connected to a driving component, and the driving rod of the driving component is fixedly connected to the first baffle to drive the first baffle to move along the extension direction of the second baffle.

7. The die-casting mold for elevator counterweights as described in claim 6, characterized in that, The second baffle and the fourth baffle each have a recessed sidewall that forms a limiting part, and the two limiting parts abut against the opposite sidewalls of the first baffle.

8. The die-casting mold for elevator counterweights as described in claim 1, characterized in that, The control board has an arc-shaped abutment portion for smoothly abutting the base plate.

9. The die-casting mold for elevator counterweights as described in claim 1, characterized in that, The frame is equipped with a collection plate. When the base plate is in the unloading state, the opening and closing end of the base plate abuts against the collection plate so that the counterweight slides onto the collection plate.

10. A die-casting equipment, characterized in that, The die-casting equipment includes the mold for die-casting elevator counterweights as described in any one of claims 1 to 9.

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