Mold core-pulling machine
By integrating the central hydraulic cylinder drive mechanism of the mold core-pulling machine with the V-shaped crank arm push plate structure, the problems of complex structure and high cost of existing equipment are solved, and efficient and low-cost operation of multi-directional core pulling and ejection is realized.
Patent Information
- Application Number
- CN202423156559.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing mold core pulling and ejection equipment has a complex structure and high cost. Furthermore, it requires the addition of cylinders and core pulling mechanisms when pulling cores in multiple directions, which increases production costs.
A mold core-pulling machine is adopted, which integrates core-pulling and ejection actions through a central hydraulic cylinder drive mechanism combined with a V-shaped crank arm and push plate structure. This simplifies the structure and allows core-pulling in multiple directions through leverage.
It achieves a simple structure, low cost, and the ability to perform core pulling and ejection simultaneously in multiple directions, improving the flexibility and efficiency of the equipment and facilitating maintenance.
Smart Images
Figure CN223671634U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to mould equipment technical field especially relates to a mould core pulling machine. BACKGROUND
[0002] Mould is the tool that under the action of external force, utilizes specific shape to make blank into the workpiece with certain shape and size. When the product mould needs to be core-pulled after forming, the core-pulling mechanism is needed to be core-pulled, and the product is needed to be ejected after core-pulling is completed.
[0003] In the prior art, when core-pulling and ejection are carried out, two independent structures are usually adopted, one cylinder controls the core-pulling mechanism to carry out core-pulling, and the other cylinder controls the ejection mechanism to eject the product. Such equipment not only has complex structure and high cost, but also needs to continue to increase the cylinder and the core-pulling mechanism when core-pulling needs to be carried out in multiple directions, thereby increasing the production cost. UTILITY MODEL CONTENTS
[0004] The utility model provides a mould core pulling machine to solve the problem mentioned in the above background.
[0005] The utility model provides a mould core pulling machine, including base, the upper surface of base is installed with upper die mounting plate through stand, the upper surface of upper die mounting plate is equipped with the accommodation slot and the installation slot, the bottom of accommodation slot is equipped with a plurality of accommodation holes, the accommodation slot is placed with the top rod board, the lower surface of top rod board is fixed with the top rod, the top rod extends to the below of upper die mounting plate through the accommodation hole, the side of upper die mounting plate is equipped with core pulling mechanism;The driving mechanism that moves up and down is arranged between base and upper die mounting plate, and the driving mechanism is arranged at intervals with the top rod;The core pulling mechanism is connected through the connecting mechanism located the upper surface of base with the driving mechanism.
[0006] Optionally, the connecting mechanism includes the hinge seat fixed on the upper surface of base, and the V-shaped crank arm is installed on the hinge seat;The inflection point of crank arm is installed on the hinge seat, the first end of crank arm is connected with the driving mechanism, and the second end of crank arm is connected with the core pulling mechanism.
[0007] Optionally, the driving mechanism includes the center hydraulic cylinder fixed on the center of the upper surface of base, the transmission sleeve is sleeved on the outside of center hydraulic cylinder, at least three fixed rings are arranged at intervals along the height direction on the outside of transmission sleeve, and the first clamping groove for placing the first end is formed between adjacent two fixed rings and transmission sleeve;The upper surface of the uppermost fixed ring is further provided with a push plate, the push plate is arranged at intervals between the top rod, and the projection of push plate completely covers the area where the top rod is located.
[0008] Optionally, the core-pulling mechanism comprises a sliding groove below the upper die mounting plate, a groove body of the sliding groove is arranged from a side edge of the upper die mounting plate to the center, and one end of the sliding groove extends to the outside of the upper die mounting plate; a sliding rail is mounted on the sliding groove in a matched mode, a second clamping groove for placing the second end portion is formed in the bottom of the sliding rail, and a connecting rod is fixed to the upper surface of the sliding rail, and the top end of the connecting rod is provided with a core-pulling block in the core-pulling direction of the mold.
[0009] Optionally, the distance between the push plate and the ejector rod in the starting position of the driving mechanism is not less than the core-pulling distance of the core-pulling mechanism.
[0010] Optionally, the maximum stroke of the push plate is equal to the distance from the push plate to the ejector rod plate.
[0011] Optionally, a plurality of core-pulling mechanisms are arranged on the upper die mounting plate, a plurality of connecting mechanisms are arranged on the base, and each core-pulling mechanism and connecting mechanism are connected one by one.
[0012] Optionally, the center hydraulic cylinder is one of a hydraulic cylinder or a pneumatic cylinder.
[0013] The mold core-pulling machine has the advantages that: 1. The structure is simple, the connecting mechanism can play the role of a lever, and through the cooperation of the connecting rod and the driving device, the core-pulling and demolding actions can be completed at the same time under the condition of arranging only one center hydraulic cylinder, so that the use is convenient and fast, and the maintenance and maintenance are convenient.
[0014] 2. The projection of the push plate completely covers the area where the ejector rod is located, so that the force is evenly distributed when the ejector rod is pushed, and the product ejection process is smooth.
[0015] 3. A plurality of core-pulling mechanisms are arranged on the upper die mounting plate, so that the product can be core-pulled in multiple directions, or a plurality of molds can be core-pulled at the same time, and the flexibility and working efficiency of the device are improved. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.
[0017] Figure 1 The structure schematic view of the mold core-pulling machine in the initial state provided by the embodiment of the present application is shown in the figure.
[0018] Figure 2 The structure schematic view of the mold core-pulling machine after the core-pulling and ejection are completed provided by the embodiment of the present application is shown in the figure.
[0019] Figure 3 A sectional view of the driving mechanism provided by the utility model embodiment is provided.
[0020] Figure 4 An exploded view of the mold core pulling machine provided by the utility model embodiment is provided.
[0021] Mark explanation:
[0022] 1-base, 2-upper die mounting plate, 3-core pulling mechanism, 4-driving mechanism, 5-connecting mechanism, 11-stand, 20-giving slot, 21-mounting slot, 22-giving hole, 23-ejector plate, 24-ejector rod, 30-slotted guide, 31-slotted rail, 32-second clamping groove, 33-connecting rod, 34-core pulling block, 40-central hydraulic cylinder, 41-transmission sleeve, 42-fixing ring, 43-first clamping groove, 44-pushing plate, 50-hinge seat, 51-crank, 52-first end, 53-second end. Specific implementation
[0023] To make the purpose, technical scheme and advantages of the utility model embodiments clearer, the technical scheme in the utility model embodiments is described clearly and completely below, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor also belong to the protection scope of the utility model.
[0024] As Figures 1-4 shown, the utility model provides a mold core pulling machine, including base 1, the upper surface of base 1 is installed with upper die mounting plate 2 through stand 11, the upper surface of upper die mounting plate 2 is equipped with giving slot 20 and mounting slot 21, the bottom of giving slot 20 is equipped with a plurality of giving hole 22, giving slot 20 is placed with ejector plate 23, the lower surface of ejector plate 23 is fixed with ejector rod 24, and ejector rod 24 extends to the below of upper die mounting plate 2 by passing through giving hole 22, and the side of upper die mounting plate 2 is equipped with core pulling mechanism 3;Between base 1 and upper die mounting plate 2, driving mechanism 4 of up-down movement is arranged, and driving mechanism 4 is spaced apart from ejector rod 24;Core pulling mechanism 3 and driving mechanism 4 are connected through connecting mechanism 5 located on the upper surface of base 1.
[0025] When the mold core pulling machine is used, the mold needs to be installed on upper die mounting plate 2, and is fixed and installed through mounting slot 21 during installation. The core pulling mechanism 3 is used for core pulling of products, and the ejector plate 23 is used for ejecting the products after core pulling and separating from the mold. The driving mechanism 4 is used for controlling the core pulling mechanism 3 and the ejector plate 23 to complete the corresponding core pulling and ejecting actions.
[0026] The movement direction output by the driving mechanism 4 is the up-down direction, that is, the movement along the height direction of the mold core pulling machine. The driving mechanism 4 is spaced apart from the ejector rod 24 and is connected with the core pulling mechanism 3 through the connecting mechanism 5. When the driving mechanism 4 moves upward, the connecting mechanism 5 is driven to move, and then the core pulling mechanism 3 is driven to complete the core pulling action. When the core pulling is completed, the driving mechanism 4 continues to move upward until the driving mechanism 4 contacts the ejector rod 24, the driving mechanism 4 drives the ejector rod 24 to move upward in the clearance hole 22, the ejector rod 24 drives the ejector rod plate 23 to move upward to eject the product and separate the product from the mold, and thus the core pulling and mold stripping work is completed. After the work is completed, the driving mechanism 4 is reset, and correspondingly, the ejector rod plate 23, the ejector rod 24 and the core pulling mechanism 3 also return to the initial position to perform the next mold stripping work.
[0027] The mold core pulling machine has the advantages that the structure is simple, the core pulling and mold stripping actions can be simultaneously completed by using one driving member, the mold core pulling machine is convenient and fast to use, and the mold core pulling machine is convenient to maintain and maintain.
[0028] As shown in Figure 2 and Figure 4 , further, the connecting mechanism 5 comprises a hinge seat 50 fixed on the upper surface of the base 1, and a V-shaped crank arm 51 is installed on the hinge seat 50; the crank point of the crank arm 51 is installed on the hinge seat 50, the first end portion 52 of the crank arm 51 is connected with the driving mechanism 4, and the second end portion 53 of the crank arm 51 is connected with the core pulling mechanism 3.
[0029] The connecting mechanism 5 comprises the V-shaped crank arm 51, one end of the crank arm 51 is connected with the core pulling mechanism 3, the other end is connected with the driving mechanism 4, the V-shaped crank arm 51 can play the role of a lever, and the up-down movement (vertical movement) of the driving mechanism 4 is converted into the horizontal movement of the core pulling mechanism 3, so that the core pulling mechanism 3 can complete the core pulling action.
[0030] As shown in Figure 3 , further, the driving mechanism 4 comprises a center hydraulic cylinder 40 fixed on the center of the upper surface of the base 1, a transmission sleeve 41 is sleeved on the outer side of the center hydraulic cylinder 40, at least three fixed rings 42 are arranged on the outer side of the transmission sleeve 41 along the height direction, a first clamping groove 43 for placing the first end portion 52 is formed between the transmission sleeve 41 and the adjacent two fixed rings 42, and the upper surface of the uppermost fixed ring 42 is further provided with a push plate 44, the push plate 44 is spaced apart from the ejector rod 24, and the projection of the push plate 44 completely covers the area where the ejector rod 24 is located.
[0031] The central hydraulic cylinder 40 is the power source for the movement of the device. During operation, the central hydraulic cylinder 40 drives the transmission sleeve 41 to reciprocate up and down between the base 1 and the upper mold mounting plate 2. At least three fixing rings 42 are spaced apart on the outer side of the transmission sleeve 41, forming at least two first slots 43 between the fixing rings 42 and the transmission sleeve 41. The first slots 43 are used to accommodate the first end 52 of the crank arm 51. During placement, the upper or lower first slot 43 is selected based on the distance of the core pulling.
[0032] The upper surface of the top fixing ring 42 is provided with a push plate 44, which is used to push the push rod 24. Therefore, the projection of the push plate 44 completely covers the area where the push rod 24 is located, so as to ensure that the push rod 24 is pushed evenly and will not get stuck.
[0033] like Figure 2 and Figure 4 As shown, the core-pulling mechanism 3 further includes a slide groove 30 located below the upper mold mounting plate 2. The groove of the slide groove 30 is set from the side of the upper mold mounting plate 2 towards the center, and one end of the slide groove 30 extends to the outside of the upper mold mounting plate 2. A slide rail 31 is fitted on the slide groove 30. A second slot 32 for placing the second end 53 is opened at the bottom of the slide rail 31. A connecting rod 33 is fixed on the upper surface of the slide rail 31. A core-pulling block 34 is set at the top of the connecting rod 33 along the core-pulling direction of the mold.
[0034] When the mold is being pulled, the pulling direction is from the center of the upper mold mounting plate 2 towards the side. Therefore, the installation direction of the slide groove 30 is the same as the pulling direction, that is, it is set from the side of the upper mold mounting plate 2 towards the center. A slide rail 31 is installed on the slide groove 30, and the second end 53 of the crank arm 51 is placed in the second slot 32 at the bottom of the slide rail 31. When the transmission sleeve 41 moves upward, the fixing ring 42 moves accordingly, and at the same time, it will drive the first end 52 in the first slot 43 to move upward. At this time, the inflection point of the crank arm 51 will rotate at the center of the hinge seat 50. When rotating, it will drive the second end 53 to move from the center of the upper mold mounting plate 2 towards the side wall, thereby driving the slide rail 31 to slide out of the slide groove 30. The slide rail 31 drives the connecting rod 33 and the core pulling block 34 away from the mold, thereby completing the core pulling work.
[0035] Furthermore, when the drive mechanism 4 is in the initial position, the distance between the push plate 44 and the push rod 24 is not less than the core-pulling distance of the core-pulling mechanism 3. Furthermore, the maximum stroke of the push plate 44 is equal to the distance from the push plate 44 to the push rod plate 23.
[0036] The distance between the push plate 44 at the starting position and the ejector rod 24 is not less than the core-pulling distance of the core-pulling mechanism 3, so as to avoid the situation that the push plate 44 pushes the ejector rod 24 when the core-pulling is not completed, and then the product is damaged. The maximum stroke of the movement of the push plate 44 is equal to the distance from the push plate 44 to the ejector rod plate 23, so as to avoid the situation that the push plate 44 runs too much upwards and damages the upper die mounting plate 2.
[0037] As shown in Figure 1 and Figure 2 Further, the core-pulling mechanism 3 is provided in plurality on the upper die mounting plate 2, the connecting mechanism 5 is provided in plurality on the base 1, and each core-pulling mechanism 3 and connecting mechanism 5 are connected one by one.
[0038] The plurality of core-pulling mechanisms 3 are provided on the upper die mounting plate 2, so that the product can be core-pulled in multiple directions, or multiple molds can be core-pulled at the same time, and the usability of the device is improved.
[0039] The complete working process of the mold core-pulling machine provided by the utility model is as follows:
[0040] When the mold core-pulling machine is used, the mold is fixed through the installation groove 21 opened on the upper surface of the upper die mounting plate 2, and then the mold work can be carried out. After the product is formed, the core-pulling is needed, and after the core-pulling is completed, the product is ejected and the next mold work can be carried out. When the core-pulling is carried out, the fixed mold and the movable mold are separated (this is a known content in the art, and will not be described here), and then the driving mechanism 4 starts to operate, and more accurately, the central hydraulic cylinder 40 starts to operate. The central hydraulic cylinder 40 drives the transmission sleeve 41 sleeved on the outer side thereof to move linearly upwards, and the fixed ring 42, the first clamping groove 43 and the push plate 44 on the transmission sleeve 41 also start to move upwards. The first end portion 52 placed in the first clamping groove 43 moves upwards and drives the crank arm 51 to rotate on the hinge seat 50 with the hinge point as the center, and then the second end portion 53 placed in the second clamping groove 32 is moved, and the movement of the second end portion 53 drives the slide rail 31 to slide on the slide groove 30, and the slide rail 31 drives the connecting rod 33 and the core-pulling block 34 to move, and the core-pulling work is completed. The vertical movement of the transmission sleeve 41 is converted into the horizontal movement of the slide rail 31 through the crank arm 51 in the connecting mechanism 5, and then the core-pulling is completed.
[0041] Since there is a gap between the push plate 44 and the ejector rod 24, and the distance of the gap is not less than the core-pulling distance, the push plate 44 will not contact the ejector rod 24 until the core-pulling work is completed when the transmission sleeve 41 moves upward. When the core-pulling work is completed, the transmission sleeve 41 drives the push plate 44 to continue moving upward, and the push plate 44 contacts the ejector rod 24 to push the ejector rod 24 out along the relief hole 22, and the ejector rod 24 pushes the ejector rod plate 23 out, and finally the ejector rod plate 23 completes the ejection work of the product. After the ejection is completed, the transmission sleeve 41 falls back, the ejector rod plate 23, the ejector rod 24 and the core-pulling mechanism 3 are reset, and the next casting mold work is continued.
[0042] The core-pulling mechanism 3 can be installed on the upper mold mounting plate 2, and when there are multiple core-pulling mechanisms 3, multiple connecting mechanisms 5 also need to be installed, and through the multiple core-pulling mechanisms 3, the core-pulling of the mold in multiple directions or the core-pulling of multiple stations at the same time can be completed, and the core-pulling and ejection processes are consistent with the single core-pulling and ejection processes.
[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that; they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A mold core lifter characterized by, Includes a base (1), on which an upper mold mounting plate (2) is mounted via a column (11) on the upper surface. The upper surface of the upper mold mounting plate (2) is provided with a clearance groove (20) and a mounting groove (21). The bottom of the clearance groove (20) is provided with multiple clearance holes (22). A push rod plate (23) is placed in the clearance groove (20). A push rod (24) is fixed on the lower surface of the push rod plate (23). The push rod (24) extends through the clearance holes (22) to the bottom of the upper mold mounting plate (2). The side of the upper mold mounting plate (2) is provided with a core pulling mechanism (3). A drive mechanism (4) for vertical movement is provided between the base (1) and the upper mold mounting plate (2), and the drive mechanism (4) is spaced apart from the top rod (24); the core pulling mechanism (3) is connected to the drive mechanism (4) through a connecting mechanism (5) located on the upper surface of the base (1).
2. The mold core lifter of claim 1, wherein, The connecting mechanism (5) includes a hinge seat (50) fixed to the upper surface of the base (1), and a V-shaped crank arm (51) is installed on the hinge seat (50). The inflection point of the crank arm (51) is mounted on the hinge seat (50), the first end (52) of the crank arm (51) is connected to the drive mechanism (4), and the second end (53) of the crank arm (51) is connected to the core pulling mechanism (3).
3. The mold core lifter of claim 2, wherein, The drive mechanism (4) includes a central hydraulic cylinder (40) fixed at the center of the upper surface of the base (1). A transmission sleeve (41) is sleeved on the outside of the central hydraulic cylinder (40). At least three fixing rings (42) are spaced apart along the height direction on the outside of the transmission sleeve (41). A first slot (43) for placing the first end (52) is formed between two adjacent fixing rings (42) and the transmission sleeve (41). The upper surface of the uppermost fixing ring (42) is also provided with a push plate (44), which is spaced apart from the top rod (24), and the projection of the push plate (44) completely covers the area where the top rod (24) is located.
4. The mold core lifter of claim 2, wherein, The core-pulling mechanism (3) includes a groove (30) located below the upper mold mounting plate (2). The groove (30) is oriented from the side of the upper mold mounting plate (2) toward the center, and one end of the groove (30) extends to the outside of the upper mold mounting plate (2). A slide rail (31) is fitted on the slide groove (30). A second slot (32) for placing the second end (53) is provided at the bottom of the slide rail (31). A connecting rod (33) is fixed on the upper surface of the slide rail (31). A core-pulling block (34) is provided at the top of the connecting rod (33) along the core-pulling direction of the mold.
5. The mold core lifter of claim 3, wherein, When the drive mechanism (4) is in the starting position, the distance between the push plate (44) and the top rod (24) is not less than the core-pulling distance of the core-pulling mechanism (3).
6. The mold core lifter of claim 3, wherein, The maximum stroke of the push plate (44) is equal to the distance from the push plate (44) to the top rod plate (23).
7. The mold core lifter of claim 1, wherein, The core pulling mechanism (3) is provided with multiple on the upper die mounting plate (2), the connecting mechanism (5) is provided with multiple on the base (1), and each core pulling mechanism (3) and the connecting mechanism (5) are connected one by one.