CN216782625U

CN216782625U - Thermal forming die capable of delaying ejection

Info

Publication number: CN216782625U
Application number: CN202122873819.7U
Authority: CN
Inventors: 罗长磊; 朱佳
Original assignee: Shanghai Lingyun Auto Mould Co ltd
Current assignee: Shanghai Lingyun Auto Mould Co ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-06-21
Anticipated expiration: 2031-11-23

Abstract

The application discloses ejecting thermoforming mould delays is suitable for and controls down mould material core delay ejecting. The delayed ejection thermal forming mold comprises an upper mold, a lower mold, a control part and a delayed moving part. The upper die comprises an upper die frame, an upper die pressing core and a first driving element. The lower die comprises a lower die frame, at least two lower die material cores and at least two second driving elements. The control component is configured to control the first drive element and the second drive element to move. The delay moving part is configured to control the output end of the second driving element to move in a delay manner, so that the second driving element moves after delaying for a preset time when the first driving element is controlled by the control part to move. The utility model avoids the problem of high price of the traditional time delay nitrogen cylinder.

Description

Thermal forming die capable of delaying ejection

Technical Field

The utility model relates to a thermal forming die, in particular to a thermal forming die capable of achieving delayed ejection.

Background

A stamping die is a relatively common device used in a part processing process, and generally includes an upper die and a lower die. The upper die is fixed to the upper slide of the press. The lower die is fixed to a fixing surface of the press machine. And the punch provides a third driving element, the upper slide block drives the upper die to move downwards, and the upper die and the lower die are close to each other and then punch the workpiece.

The part of the work is also held in a clamped state during the mold release. Thus, a movable upper die core is provided on the upper die and a movable lower die core is provided on the lower die. After the workpiece is formed, the upper die and the lower die are opened, the upper die moves upwards at the moment, the upper die pressing core continuously pushes downwards, the workpiece is clamped on the lower die frame, and the workpiece forming is facilitated. The movement of the upper die pressing core and the lower die pressing core is implemented through the air cylinder, and the air cylinder shares one air source, so that the upper die pressing core and the lower die pressing core can move simultaneously, as shown in figure 2, in the die opening process of the die, the air cylinder moves simultaneously, the lower die pressing core pushes the workpiece to move upwards, and the upper die pressing core fixes the workpiece on the lower die frame, so that the workpiece is deformed. Therefore, the lower die material pressing core needs to move in a delayed manner in the workpiece demoulding process.

The existing lower die pressing core is driven to move through the time-delay nitrogen cylinder, and the purpose that the lower die pressing core moves after the upper die moves for a certain distance can be achieved. However, the delayed nitrogen cylinder is expensive, so that the production cost of a workpiece is greatly increased, and the delayed nitrogen cylinder is easy to generate heat and damage in the use process, needs frequent maintenance and further increases the economic cost. In addition, the delivery cycle of the delayed nitrogen cylinder is long, and the die cannot be rapidly machined, resulting in an extended cycle of the workpiece item.

SUMMERY OF THE UTILITY MODEL

An advantage of the present invention is to provide a delayed ejection thermoforming mold, wherein the control part can control the delayed movement of the second driving element through the delayed moving part, avoiding the problem that the conventional delayed nitrogen cylinder is expensive.

One advantage of the present invention is to provide a delayed ejection thermoforming mold, wherein the third driving element drives the ejection member to delay to the top of the lower forming surface, so as to eject the formed workpiece and facilitate blanking of the workpiece.

One advantage of the present invention is to provide a delayed ejection thermoforming mold wherein the control unit controls the time of gas entry into the cylinder by means of a solenoid valve for the purpose of delayed movement of the cylinder.

To achieve at least one of the above advantages, the present invention provides a delayed ejection thermoforming mold adapted to control delayed ejection of a lower mold core, the delayed ejection thermoforming mold comprising:

the upper die comprises an upper die frame, an upper die pressing core and a first driving element, wherein an upper forming surface is formed at the bottom of the upper die frame, the first driving element is arranged on the upper die frame, the upper die pressing core is arranged on the first driving element, and the upper die pressing core is arranged at the output end of the first driving element;

the lower die comprises a lower die frame, at least two lower die pressing material cores and at least two second driving elements, the lower die frame forms a lower forming surface matched with the upper forming surface, the at least two second driving elements are arranged on the lower die frame and correspondingly positioned on two sides of the lower forming surface, and the lower die pressing material cores are correspondingly arranged at the output ends of the second driving elements;

a control member configured to control movement of the first drive element and the second drive element; and

a delay moving part configured to control the output end of the second driving element to move with a delay so that the second driving element moves with a delay of a predetermined time when the first driving element is controlled to move by the control part.

According to an embodiment of the present invention, the thermoforming mold further comprises a discharging assembly, the discharging assembly comprises a third driving element and at least one ejection member, the third driving element is arranged inside the lower mold frame along the vertical direction, the ejection member is arranged at the output end of the third driving element, so that when the output end of the third driving element moves to the maximum movable position, the ejection member extends to the top of the lower molding surface.

According to an embodiment of the present invention, the ejector is cylindrical, and the ejector is implemented in two pieces, and the lower mold frame is opened with a through hole adapted to the ejector to guide the ejector to move.

According to an embodiment of the utility model, the third drive element is communicatively connected to the control means such that the control means controls the movement of the third drive element.

According to an embodiment of the utility model, the delay moving means is implemented as a timer, and the second driving element is communicatively connected to the control means via the timer, so that the delay of the second driving element is controlled by the control means.

According to an embodiment of the present invention, the first driving element and the second driving element are each implemented as a cylinder, the upper die core and the lower die core are disposed at output ends of the corresponding cylinders, and the cylinder to which the lower die core is connected is defined as a die core driving cylinder.

According to an embodiment of the utility model, the thermoforming mold further comprises a power air source and two electromagnetic valves, the two electromagnetic valves are simultaneously in communication connection with the control part, each cylinder is communicated with the power air source through one electromagnetic valve, the electromagnetic valve connected with the material pressing core driving cylinder is connected with the time delay moving part, and when the control part controls the two electromagnetic valves, the electromagnetic valve connected with the material pressing core driving cylinder moves in a time delay manner.

According to an embodiment of the utility model, the third drive element is implemented as a cylinder, which communicates with the power air supply.

According to an embodiment of the present invention, the time-delay moving member is implemented as a tank body provided in communication between the power air source and the plunger driving cylinder.

According to an embodiment of the utility model, the first drive element is embodied as a nitrogen spring, the bottom surface of the lower mold core being parallel to the bottom surface of the upper molding surface when the nitrogen spring is uncompressed.

Drawings

Fig. 1 shows a schematic view of a delayed ejection thermoforming mold according to the utility model.

Fig. 2 shows a schematic view of the simultaneous movement of the upper and lower die cores of the thermoforming mold resulting in deformation of the workpiece.

Fig. 3 shows a schematic structural view of the delayed ejection thermoforming mold of the utility model in another state.

Fig. 4 shows a system block diagram of a delayed ejection thermoforming mold of the present invention.

FIG. 5 is a system block diagram illustrating one embodiment of a delayed ejection thermoforming mold of the present invention.

Detailed Description

The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the utility model, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to fig. 1 to 4, a delayed ejection thermoforming mold according to a preferred embodiment of the present invention will be described in detail below. The thermal forming die capable of realizing delayed ejection can control delayed ejection of the lower die pressing core. The extended ejection thermoforming mold includes an upper mold 10, a lower mold 20, a time delay moving assembly 30, and a control part 40.

The upper tool 10 comprises an upper tool carrier 11, an upper tool core 12 and a first drive element 13. The upper die frame 11 is fixedly arranged on an upper sliding block of the punching machine, the punching machine can drive the lower die to move relatively, and an upper forming surface 101 is formed at the bottom of the upper die frame 11. The first driving element 13 is fixedly installed inside the upper mold frame 11. The upper mold core 12 is disposed on the first driving element 13, and the upper mold core 12 is driven to move up and down by the first driving element 13.

The lower mold 20 includes a lower mold frame 21, at least two lower mold cores 22, and at least two second driving elements 23. The lower mold frame 21 is disposed on a fixed surface of the press, and a lower molding surface 201 is formed on a top of the lower mold frame 21. At least two second driving elements 23 are fixedly disposed on the lower mold frame 21 and located at two sides of the lower molding surface 201. The lower mold core 22 is correspondingly disposed at the output end of the second driving element 23, and the lower mold core 22 is driven by the second driving element 23 to move up and down.

The control member 40 is arranged to control the movement of the first drive element 13 and the second drive element 23.

The delay movement means 30 is arranged to control the delay movement of the output of the second drive element 23.

When a workpiece is formed, the workpiece is placed on the lower forming surface 201, and the upper slide block of the punch moves toward the fixed surface of the punch, so that the upper die carrier 11 moves toward the lower die carrier 21. At this time, the first driving member 13 is in an outwardly extended state such that the upper molding core 12 is flush with the bottom of the upper molding surface 101. When the upper die frame 11 is moved to the upper die pressing core 12 to contact with the workpiece, due to the action of the lower forming surface 201, the upper die frame 11 continues to move towards the lower die frame 21, the upper die pressing core 12 continuously contacts with the workpiece and moves towards the inside of the upper die frame 11, and when the workpiece is extruded to be simultaneously attached to the upper forming surface 101 and the lower forming surface 201, the workpiece is formed.

When the workpiece is taken out, the thermal forming mold is opened, the upper mold frame 11 moves in a direction away from the lower mold frame 21, and at this time, the first driving element 13 makes the upper mold core 12 and the workpiece adhere to each other under the control of the control part 40, so that the workpiece is clamped to the lower mold frame 21. The control component 40 controls the second driving element 23 to move, and the second driving element 23 moves in a time-delay manner under the action of the time-delay moving component 30. After the upper die carrier 11 can move for a certain distance, the second driving element 23 pushes the lower die core 22 to move upwards, so that the workpiece falls off from the lower forming surface 201, and blanking is completed, thereby preventing the workpiece from deforming in the blanking process. The delay moving member 30 is adopted to delay the movement of the second driving element 23, so that the problem of high cost of the traditional delay nitrogen cylinder can be avoided, the processing cost of the die is reduced, and further the production cost of the workpiece is reduced.

The thermoforming mold also includes a discharge assembly 50. The discharge assembly 50 comprises a third drive element 51 and at least one ejector member 52. The third driving element 51 is disposed at the lower mold 21 in a vertical direction, and the ejector 52 is disposed at an output end of the third driving element 51 to reciprocate the ejector 52 in the vertical direction. When the output end of the third driving element 51 is moved to the maximum movable position, the ejector member extends to the top of the lower forming surface 201. Therefore, when the workpiece needs to be removed from the lower molding surface 201, the workpiece can be ejected upwards through the ejector 52, so that the workpiece can be conveniently removed from the molding surface 201. In addition, when the workpiece is machined by the forming surface 201, the ejector 52 is retracted by the third driving element 51, and the machining of the workpiece is not affected.

The ejector 52 has a cylindrical shape, and the ejector 52 is implemented in two. The lower die carrier 21 is provided with a through hole matched with the material ejecting part 52, and the material ejecting part 52 is guided to move through the through hole.

The third drive element 51 is communicatively coupled to the control component 40 to control movement of the third drive element 51 via the control component 40. The control component 40 can perform systematic control on the discharging assembly 50, so as to achieve the purpose of automatic control.

The delay moving part 30 is implemented as a timer. The second drive element 23 is in communication with the control unit 40 via the timer. When the timer receives an execution signal, the timer starts timing, and after the time is up, the timer transmits the execution signal to the second driving element 23, so that the purpose of delayed movement of the second driving element 23 is achieved.

As shown in fig. 5, according to a variant embodiment of the utility model, the first drive element 13 and the second drive element 23 are both implemented as cylinders. The upper mold core 12 and the lower mold core 22 are disposed at the output ends of the corresponding cylinders. The cylinder to which the lower die core 22 is attached is defined as a core drive cylinder.

The hot forming die further comprises a power air source which is simultaneously communicated with the two air cylinders and provides a pressure source for the movement of the air cylinders. The use of gas as the third driving element enables the first driving element 13 and the second driving element to form a stable pressure without contamination.

The thermoforming mould further comprises two electromagnetic valves. Both solenoid valves are in communication with the control unit 40. Each cylinder is communicated with the power air source through one electromagnetic valve, the electromagnetic valve connected with the material pressing core driving cylinder is connected with the time delay moving part, and when the control part controls the two electromagnetic valves, the electromagnetic valve connected with the material pressing core driving cylinder carries out time delay movement.

The first drive element 13 is embodied as a nitrogen spring. When not compressed, the nitrogen spring makes the bottom surface of the lower mold core 12 parallel to the bottom surface of the upper molding surface 101. When the upper mold core 12 contacts the workpiece placed on the lower molding surface 201 during the downward movement of the upper mold frame 11, the nitrogen spring is compressed as the upper mold frame 11 continues to move downward, and the lower mold core 12 also continuously presses the workpiece against the lower molding surface 201. During the upward movement of the upper mold frame 11, the nitrogen spring rebounds and continuously presses the lower mold core 12 against the lower molding surface 201, and finally rebounds to an uncompressed state with the bottom surface of the lower mold core 12 parallel to the bottom surface of the upper molding surface 101.

In a variant embodiment of the utility model, the time-lapse moving member 30 is implemented as a can body that can be vented directionally. The tank body is communicated between the power air source and the material pressing core driving cylinder. When the power air source transmits air to the material pressing core driving cylinder, the pressure intensity of the air in the tank body and the material pressing core driving cylinder is required to be ensured to be constant, and the air can push the output end of the material pressing core driving cylinder to move. Therefore, the power gas source firstly discharges gas into the tank body, and when the gas pressure in the tank body is constant, the pressing core drives the cylinder to move, so that when the cylinder moves, the pressing core drives the cylinder to move in a delayed manner, and the purpose of controlling the lower die to move in a delayed manner is achieved. After the pressing core drives the cylinder to finish moving, the gas in the tank body is restored to the atmospheric pressure state. Specifically, a control valve may be provided on the tank body to discharge the gas inside the tank body at regular time.

The third drive element 51 is also embodied as a cylinder, which communicates with the power air supply. And the three cylinders can be controlled by a single power air source, so that the power source is saved.

The control unit 40 is embodied as a central processor of the press. And programming a program for controlling the movement of the die to a central processor in the punching machine, so that the punching machine controls the cylinder in the thermal forming die to move together in the punching process, and the aim of automatic control is fulfilled.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are given by way of example only and are not limiting of the utility model. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims

1. The ejecting thermoforming mould of time delay is suitable for the ejecting time delay of control lower mould material core, its characterized in that, ejecting thermoforming mould of time delay includes:

a delay moving part configured to control the output end of the second driving element to move with a delay, so that the second driving element moves after delaying for a predetermined time when the first driving element is controlled to move by the control part.

2. The prolonged ejection thermoforming mold of claim 1, wherein the thermoforming mold further comprises a discharge assembly, the discharge assembly comprising a third driving element and at least one ejector, the third driving element being disposed inside the lower mold frame in the vertical direction, the ejector being disposed at an output end of the third driving element, such that the ejector extends to the top of the lower molding surface when the output end of the third driving element moves to the maximum movable position.

3. A delayed ejection thermoforming mold as claimed in claim 2, characterized in that the ejector is cylindrical and is implemented in two, the lower mold frame being provided with a through hole adapted to the ejector to guide the movement of the ejector.

4. The delayed ejection thermoforming mold of claim 2, wherein the third driving element is communicatively connected to the control component such that the control component controls movement of the third driving element.

5. The delayed ejection thermoforming mold of claim 1, wherein the delayed moving part is implemented as a timer, the second driving element being communicatively connected with the control part through the timer, such that the second driving element delay is controlled by the control part.

6. The delayed ejection thermoforming mold of claim 4, wherein the first driving element and the second driving element are each implemented as a cylinder, the upper molding core and the lower molding core are disposed at the output ends of the corresponding cylinders, and the cylinder to which the lower molding core is connected is defined as a core-pressing driving cylinder.

7. The thermal forming die for delayed ejection according to claim 6, further comprising a power air source and two solenoid valves, wherein the two solenoid valves are simultaneously in communication connection with the control part, each cylinder is communicated with the power air source through one solenoid valve, and the solenoid valve connected with the pressing core driving cylinder is connected with the delay moving part, so that when the control part controls the two solenoid valves, the solenoid valve connected with the pressing core driving cylinder moves in a delayed manner.

8. The delayed ejection thermoforming mold of claim 7, wherein the third driving element is implemented as a pneumatic cylinder, the pneumatic cylinder being in communication with the powered air supply.

9. The delayed ejection thermoforming mold of claim 8, wherein the delayed moving member is implemented as a canister body disposed in communication between the powered air source and the swage core driving cylinder.

10. The delayed ejection thermoforming mold of claim 1, wherein the first driving element is implemented as a nitrogen spring, and when the nitrogen spring is not compressed, the bottom surface of the lower molding core is parallel to the bottom surface of the upper molding surface.