CN223671634U - Mould core pulling machine - Google Patents

Abstract

The utility model provides a die core pulling machine which comprises a base, wherein an upper die mounting plate is mounted on the upper surface of the base through an upright post, a yielding groove and a mounting groove are formed in the upper surface of the upper die mounting plate, a plurality of yielding holes are formed in the bottom of the yielding groove, a push rod plate is placed in the yielding groove, a push rod is fixed on the lower surface of the push rod plate, the push rod penetrates through the yielding hole to extend to the lower portion of the upper die mounting plate, a core pulling mechanism is arranged on the side edge of the upper die mounting plate, a driving mechanism which moves up and down is arranged between the base and the upper die mounting plate, the driving mechanism and the push rod are arranged at intervals, and the core pulling mechanism is connected with the driving mechanism through a connecting mechanism positioned on the upper surface of the base. The die core pulling machine provided by the utility model has a simple structure, the crank arm in the connecting mechanism can play a role of a lever, and through the cooperation of the crank arm and the driving device, the two actions of core pulling and demoulding can be simultaneously completed under the condition that only one central hydraulic cylinder is arranged, so that the die core pulling machine is convenient and quick to use and is also convenient to maintain.

Description

Mould core pulling machine

Technical Field

The utility model relates to the technical field of mold equipment, in particular to a mold core pulling machine.

Background

The die is a tool for forming a blank into an article having a certain shape and size by using a certain shape under the action of an external force. After the product is molded in the product mold, core pulling is needed to be carried out through a core pulling mechanism, and after core pulling is finished, the product is needed to be ejected through an ejection structure.

In the prior art, when core pulling and ejection are carried out, two independent structures are generally adopted, one cylinder controls a core pulling mechanism to carry out core pulling, and the other cylinder controls an ejection mechanism to eject a product. The device is complex in structure and high in cost, and when core pulling is needed in multiple directions, the cylinder and the core pulling mechanism are required to be continuously added, so that the production cost is increased.

Disclosure of utility model

The utility model provides a die core pulling machine which is used for solving the problems in the background art.

The utility model provides a die core pulling machine which comprises a base, wherein an upper die mounting plate is mounted on the upper surface of the base through an upright post, a yielding groove and a mounting groove are formed in the upper surface of the upper die mounting plate, a plurality of yielding holes are formed in the bottom of the yielding groove, a push rod plate is placed in the yielding groove, a push rod is fixed on the lower surface of the push rod plate, the push rod penetrates through the yielding hole to extend to the lower portion of the upper die mounting plate, a core pulling mechanism is arranged on the side edge of the upper die mounting plate, a driving mechanism which moves up and down is arranged between the base and the upper die mounting plate, the driving mechanism and the push rod are arranged at intervals, and the core pulling mechanism is connected with the driving mechanism through a connecting mechanism positioned on the upper surface of the base.

Optionally, the connecting mechanism comprises a hinge seat fixed on the upper surface of the base, a V-shaped turning arm is arranged on the hinge seat, an inflection point of the turning arm is arranged on the hinge seat, a first end part of the turning arm is connected with the driving mechanism, and a second end part of the turning arm is connected with the core pulling mechanism.

Optionally, the driving mechanism comprises a central hydraulic cylinder fixed at the center of the upper surface of the base, the outer side of the central hydraulic cylinder is sleeved with a transmission clamping sleeve, at least three fixing rings are arranged at intervals along the height direction on the outer side of the transmission clamping sleeve, a first clamping groove for placing a first end part is formed between every two adjacent fixing rings and the transmission clamping sleeve, a push plate is further arranged on the upper surface of the uppermost fixing ring, the push plate and the ejector rod are arranged at intervals, and the projection of the push plate completely covers the area where the ejector rod is located.

The core pulling mechanism comprises a sliding groove, wherein the sliding groove is arranged below the upper die mounting plate, the groove body direction of the sliding groove is arranged from the side edge of the upper die mounting plate to the center, one end of the sliding groove extends to the outer side 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 a second end is formed in the bottom of the sliding rail, a connecting rod is fixed on the upper surface of the sliding rail, and a core pulling block is arranged at the top end of the connecting rod along the core pulling direction of the die.

Optionally, when the driving mechanism is at the initial position, the distance between the push plate and the ejector rod is not smaller than the core pulling distance of the core pulling mechanism.

Alternatively, the maximum travel of the push plate movement is equal to the distance of the push plate to the ejector plate.

Optionally, the core pulling mechanism is provided with a plurality of on the upper die mounting plate, the connecting mechanism is provided with a plurality of on the base, and each core pulling mechanism and the connecting mechanism are connected in one-to-one correspondence.

Optionally, the central hydraulic cylinder is one of a hydraulic cylinder or a pneumatic cylinder.

The die core pulling machine has the beneficial effects that 1, the structure is simple, the crank arm in the connecting mechanism can play a role of a lever, and through the cooperation of the crank arm and the driving device, the two actions of core pulling and demoulding can be completed simultaneously under the condition that only one central hydraulic cylinder is arranged, so that the die core pulling machine is convenient and quick to use and convenient to maintain.

2. The projection of push pedal covers the region that the ejector pin is located completely to guarantee that the ejector pin atress is even when receiving the promotion, can not take place to block and dun, then guarantee the smoothness of product ejecting process.

3. The upper die mounting plate is provided with the plurality of core pulling mechanisms, so that a product can be pulled in a plurality of directions, or a plurality of dies can be pulled simultaneously, and the flexibility of the device and the working efficiency are improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a core pulling machine for a mold in an initial state according to an embodiment of the present utility model;

Fig. 2 is a schematic structural diagram of a core-pulling machine for a mold after core-pulling ejection is completed according to an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of a drive mechanism provided by an embodiment of the present utility model;

fig. 4 is an exploded view of a core extractor for a mold according to an embodiment of the present utility model.

Reference numerals illustrate:

The device comprises a 1-base, a 2-upper die mounting plate, a 3-core pulling mechanism, a 4-driving mechanism, a 5-connecting mechanism, a 11-upright post, a 20-abdication groove, a 21-mounting groove, a 22-abdication hole, a 23-ejector rod plate, a 24-ejector rod, a 30-sliding groove, a 31-sliding rail, a 32-second clamping groove, a 33-connecting rod, a 34-core pulling block, a 40-central hydraulic cylinder, a 41-transmission clamping sleeve, a 42-fixing ring, a 43-first clamping groove, a 44-push plate, a 50-hinge seat, a 51-crank arm, a 52-first end part and a 53-second end part.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions in the embodiments of the present utility model will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are also within the scope of the utility model.

As shown in figures 1-4, the utility model provides a die core pulling machine, which comprises a base 1, wherein an upper die mounting plate 2 is mounted on the upper surface of the base 1 through an upright post 11, a yielding groove 20 and a mounting groove 21 are formed in the upper surface of the upper die mounting plate 2, a plurality of yielding holes 22 are formed in the bottom of the yielding groove 20, a push rod plate 23 is placed in the yielding groove 20, a push rod 24 is fixed on the lower surface of the push rod plate 23, the push rod 24 penetrates through the yielding holes 22 to extend below the upper die mounting plate 2, a core pulling mechanism 3 is arranged on the side edge of the upper die mounting plate 2, a driving mechanism 4 which moves up and down is arranged between the base 1 and the upper die mounting plate 2, the driving mechanism 4 and the push rod 24 are arranged at intervals, and the core pulling mechanism 3 and the driving mechanism 4 are connected through a connecting mechanism 5 positioned on the upper surface of the base 1.

When the die core pulling machine is used, the die is required to be mounted on the upper die mounting plate 2, and the die core pulling machine is fixedly mounted through the mounting groove 21 during mounting. The core pulling mechanism 3 is used for pulling a core of a product, and the ejector rod plate 23 is used for ejecting the core-pulled product out of the mold and separating the core-pulled product from the mold. The driving mechanism 4 is used for controlling and driving the core pulling mechanism 3 and the ejector rod plate 23 to complete corresponding core pulling and ejection actions.

The movement direction output by the driving mechanism 4 is the up-down direction, namely, the movement along the height direction of the die core pulling machine. A gap is reserved between the driving mechanism 4 and the ejector rod 24, and the driving mechanism is connected with the core pulling mechanism 3 through a connecting mechanism 5. When the driving mechanism 4 moves upwards, the connecting mechanism 5 is driven to move, and then the core pulling mechanism 3 is driven by the connecting mechanism 5 to complete the core pulling action. When the core pulling is completed, the driving mechanism 4 continues to move upwards until contacting with the ejector rod 24, the driving mechanism 4 pushes the ejector rod 24 to move upwards in the yielding hole 22, and the ejector rod 24 drives the ejector rod plate 23 to move upwards to eject the product and release the product from the die, so that the core pulling and releasing work is completed. After completion, the driving mechanism 4 is reset, and correspondingly, the ejector rod plate 23, the ejector rod 24 and the core pulling mechanism 3 are restored to the initial positions, so that the next mould demoulding operation is performed.

The die core pulling machine provided by the utility model has a simple structure, can simultaneously complete two actions of core pulling and demoulding through one driving piece, is convenient and quick to use, and is also convenient to maintain.

As shown in fig. 2 and 4, further, the connection mechanism 5 includes a hinge base 50 fixed on the upper surface of the base 1, a V-shaped lever 51 is mounted on the hinge base 50, an inflection point of the lever 51 is mounted on the hinge base 50, a first end 52 of the lever 51 is connected to the driving mechanism 4, and a second end 53 of the lever 51 is connected to the core pulling mechanism 3.

The connecting mechanism 5 comprises a V-shaped crank arm 51, one end of the crank arm 51 is connected with the core pulling mechanism 3, the other end of the crank arm 51 is connected with the driving mechanism 4, the V-shaped crank arm 51 can play a role of a lever, and the up-and-down motion (vertical motion) of the driving mechanism 4 is converted into the horizontal motion of the core pulling mechanism 3, so that the core pulling mechanism 3 can conveniently complete the core pulling action.

As shown in fig. 3, further, the driving mechanism 4 comprises a central hydraulic cylinder 40 fixed at the center of the upper surface of the base 1, a transmission clamping sleeve 41 is sleeved on the outer side of the central hydraulic cylinder 40, at least three fixing rings 42 are arranged on the outer side of the transmission clamping sleeve 41 at intervals along the height direction, a first clamping groove 43 for placing a first end 52 is formed between two adjacent fixing rings 42 and the transmission clamping sleeve 41, a push plate 44 is further arranged on the upper surface of the uppermost fixing ring 42, the push plate 44 and the ejector rod 24 are arranged at intervals, and the projection of the push plate 44 completely covers the area where the ejector rod 24 is located.

The central hydraulic cylinder 40 is a power source for the movement of the device, and when in operation, the central hydraulic cylinder 40 drives the transmission clamping sleeve 41 to reciprocate up and down between the base 1 and the upper die mounting plate 2. At least three fixing rings 42 are arranged at intervals on the outer side of the transmission clamping sleeve 41, and at least two first clamping grooves 43 are formed between the fixing rings 42 and the transmission clamping sleeve 41. The first clamping groove 43 is used for placing the first end 52 of the crank arm 51. The first clamping groove 43 above or below is selected according to the distance of loose core during placement.

The push plate 44 is arranged on the upper surface of the uppermost fixing ring 42, and the push plate 44 is used for pushing the ejector rod 24, so that the projection of the push plate 44 completely covers the area where the ejector rod 24 is positioned, and the ejector rod 24 is uniformly stressed when being pushed, and no clamping occurs.

As shown in fig. 2 and 4, further, the core pulling mechanism 3 comprises a sliding groove 30 positioned below the upper die mounting plate 2, the direction of a groove body of the sliding groove 30 is arranged from the side edge of the upper die mounting plate 2 to the center, one end of the sliding groove 30 extends to the outer side of the upper die mounting plate 2, a sliding rail 31 is mounted on the sliding groove 30 in a matched manner, a second clamping groove 32 for placing a second end 53 is formed in the bottom of the sliding rail 31, a connecting rod 33 is fixed on the upper surface of the sliding rail 31, and a core pulling block 34 is arranged at the top end of the connecting rod 33 along the core pulling direction of the die.

When the mold is used for core pulling, the core pulling direction is from the center of the upper mold mounting plate 2 to the side, so that the mounting direction of the sliding groove 30 is the same as the core pulling direction, namely, the sliding groove is arranged from the side of the upper mold mounting plate 2 to the center. The sliding rail 31 is cooperatively arranged on the sliding groove 30, and the second end 53 of the crank arm 51 is placed in the second clamping groove 32 at the bottom of the sliding rail 31. When the transmission clamping sleeve 41 moves upwards, the fixing ring 42 moves along with the movement, and simultaneously drives the first end 52 in the first clamping groove 43 to move upwards, at the moment, the inflection point of the turning arm 51 rotates at the center of the hinge seat 50, and when the inflection point rotates, the second end 53 is driven to move from the center of the upper die mounting plate 2 to the side wall direction, so that the sliding rail 31 is driven to slide out of the sliding groove 30, the sliding rail 31 drives the connecting rod 33 and the core pulling block 34 to be away from the die, and core pulling work is completed.

Further, when the driving mechanism 4 is at the initial position, the distance between the push plate 44 and the ejector rod 24 is not smaller than the core pulling distance of the core pulling mechanism 3. Further, the maximum travel of the movement of the push plate 44 is equal to the distance of the push plate 44 from the ejector plate 23.

The distance between the push plate 44 and the ejector rod 24 at the initial position is not smaller than the core pulling distance of the core pulling mechanism 3, so that the push plate 44 pushes the ejector rod 24 when core pulling is not completed, and damage to products is avoided. The maximum travel of the push plate 44 is equal to the distance from the push plate 44 to the ejector plate 23, so as to avoid the situation that the push plate 44 moves upwards to damage the upper die mounting plate 2 too much.

As shown in fig. 1 and 2, further, a plurality of core-pulling mechanisms 3 are provided on the upper die mounting plate 2, a plurality of connection mechanisms 5 are provided on the base 1, and each core-pulling mechanism 3 and the connection mechanism 5 are connected in one-to-one correspondence.

The upper die mounting plate 2 is provided with a plurality of core pulling mechanisms 3, so that a product can be pulled in a plurality of directions or a plurality of dies can be pulled simultaneously, and the usability of the device is improved.

The complete working process of the die core pulling machine provided by the utility model is as follows:

When the die core pulling machine is used, the die is fixed through the mounting groove 21 formed in the upper surface of the upper die mounting plate 2, and then casting operation can be performed. After the product is molded, core pulling is needed, and after the core pulling is finished, the product is ejected out to perform the next casting mold. During core pulling, the fixed mold and the movable mold are separated (which is well known in the art and will not be described herein), and then the driving mechanism 4 starts to operate, to be precise, as the central hydraulic cylinder 40. The central hydraulic cylinder 40 drives the transmission clamping sleeve 41 sleeved on the outer side of the central hydraulic cylinder to move linearly upwards, and the fixing ring 42, the first clamping groove 43 and the push plate 44 on the transmission clamping sleeve 41 start to move upwards. The first end 52 disposed in the first clamping groove 43 moves upward along with the first end, and drives the crank arm 51 to rotate on the hinge base 50 with the inflection point as the center, so that the second end 53 disposed in the second clamping groove 32 moves, the movement of the second end 53 drives the sliding rail 31 to slide on the sliding groove 30, and the sliding rail 31 drives the connecting rod 33 and the core pulling block 34 to move, so that core pulling work is completed. The vertical movement of the transmission clamping sleeve 41 is converted into the horizontal movement of the slide rail 31 through the crank arm 51 in the connecting mechanism 5, and core pulling is completed.

Because the push plate 44 and the ejector rod 24 are spaced apart by a distance not smaller than the core pulling distance, the push plate 44 does not contact the ejector rod 24 until the core pulling operation is completed by moving the driving ferrule 41 upward. When the core pulling is completed, the driving clamping sleeve 41 drives the push plate 44 to move upwards continuously, the push plate 44 is contacted with the ejector rod 24 to eject the ejector rod 24 along the yielding hole 22, the ejector rod 24 pushes out the ejector rod plate 23, and finally the ejector rod plate 23 completes the ejection work of the product. After the ejection is completed, the transmission clamping 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 mould work is continued.

The core-pulling mechanism 3 can be installed on the upper die mounting plate 2 in a plurality of ways, when a plurality of core-pulling mechanisms 3 exist, a plurality of connecting mechanisms 5 are also required to be installed in a matched mode, the core-pulling of the die in a plurality of directions can be completed through the plurality of core-pulling mechanisms 3, or the core-pulling is performed at the same time at a plurality of stations, and the core-pulling and ejection processes are consistent with the single core-pulling and ejection processes.

It should be noted that the above embodiments are merely for illustrating the technical solution of the present utility model, and not for limiting the same, and although the present utility model has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not deviate the essence of the corresponding technical solution from the scope of the technical solution of the embodiments of the present utility model.

Claims (7)

1. The utility model provides a mould core pulling machine which is characterized in that, including base (1), upper surface of base (1) is installed through stand (11) and is gone up mould mounting panel (2), the upper surface of going up mould mounting panel (2) has been seted up and has been stepped down groove (20) and mounting groove (21), a plurality of holes (22) of stepping down have been seted up to the bottom of stepped down groove (20), put ejector pin board (23) in stepped down groove (20), the lower surface of ejector pin board (23) is fixed with ejector pin (24), ejector pin (24) wear out step down hole (22) extend to the below of going up mould mounting panel (2), the side of going up mould mounting panel (2) is equipped with core pulling mechanism (3);

A driving mechanism (4) which moves up and down is arranged between the base (1) and the upper die mounting plate (2), the driving mechanism (4) and the ejector rod (24) are arranged at intervals, and the core pulling mechanism (3) is connected with the driving mechanism (4) through a connecting mechanism (5) positioned on the upper surface of the base (1).

2. The die core pulling machine according to claim 1, wherein the connecting mechanism (5) comprises a hinge base (50) fixed on the upper surface of the base (1), and a V-shaped crank arm (51) is arranged on the hinge base (50);

The inflection point of the crank arm (51) is arranged on the hinge seat (50), a first end (52) of the crank arm (51) is connected with the driving mechanism (4), and a second end (53) of the crank arm (51) is connected with the core pulling mechanism (3).

3. The die core pulling machine according to claim 2, wherein the driving mechanism (4) comprises a central hydraulic cylinder (40) fixed at the center of the upper surface of the base (1), a transmission clamping sleeve (41) is sleeved on the outer side of the central hydraulic cylinder (40), at least three fixing rings (42) are arranged on the outer side of the transmission clamping sleeve (41) at intervals along the height direction, and a first clamping groove (43) for placing the first end part (52) is formed between two adjacent fixing rings (42) and the transmission clamping sleeve (41);

The upper surface of the uppermost fixed ring (42) is also provided with a push plate (44), the push plate (44) and the ejector rod (24) are arranged at intervals, and the projection of the push plate (44) completely covers the area where the ejector rod (24) is located.

4. The die core pulling machine according to claim 2, wherein the core pulling mechanism (3) comprises a chute (30) positioned below the upper die mounting plate (2), the direction of the chute body of the chute (30) is set from the side edge of the upper die mounting plate (2) to the center, and one end of the chute (30) extends to the outer side of the upper die mounting plate (2);

Slide rail (31) are installed in the cooperation on spout (30), second draw-in groove (32) that are used for placing second tip (53) are seted up to the bottom of slide rail (31), the upper surface of slide rail (31) is fixed with connecting rod (33), the top of connecting rod (33) is provided with loose core piece (34) along the mould direction of loosing core.

5. A core pulling machine for a mold according to claim 3, wherein the distance between the push plate (44) and the ejector rod (24) is not smaller than the core pulling distance of the core pulling mechanism (3) when the driving mechanism (4) is at the initial position.

6. A die core pulling machine according to claim 3, wherein the maximum stroke of the movement of the push plate (44) is equal to the distance from the push plate (44) to the ejector plate (23).

7. The mold core pulling machine according to claim 1, wherein the core pulling mechanism (3) is provided in plurality on the upper mold mounting plate (2), the connecting mechanism (5) is provided in plurality on the base (1), and each core pulling mechanism (3) and the connecting mechanism (5) are connected in one-to-one correspondence.