Small floating mechanism for thermal forming die

Abstract

The utility model relates to the technical field of material floating mechanisms, in particular to a small material floating mechanism for a thermal forming die, which comprises a hole flanging positioning pin, a material floating core, a plurality of nitrogen springs and a pier block, the bottom of the hole flanging positioning pin is fixed on the pier block, the upper part of the hole flanging positioning pin sequentially penetrates through a die holder and an insert of the thermal forming die, and the top of the hole flanging positioning pin extends out of the insert. The floating material core is slidably connected to the outer side of the hole flanging positioning pin, the outer side of the floating material core is slidably connected with the die holder and the insert, the top of the floating material core extends out of the insert, the nitrogen springs are installed at the bottom of the floating material core, the hole flanging positioning pin is fixed in position, and the floating material core floats to the preset height under the action of the nitrogen springs and makes contact with the hot material piece after the upper die is pressed downwards. The position is formed firstly, hole flanging is carried out after the part reaches the bottom, the nitrogen spring is adopted as a pressure source, the pressure can be controlled by charging and discharging nitrogen into the nitrogen spring, and the problem that the spring pressure in an existing floating mechanism is a fixed value and cannot be adjusted is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of floating material mechanisms, specifically a small floating material mechanism for thermoforming molds. Background Technology

[0002] In thermoforming technology, the locating pins used for laser cutting and positioning of semi-finished parts are generally fixed on the flat surface of the part. However, many thermoformed parts, due to their complex shapes and limited large flat surfaces, require smaller floating mechanisms. Traditional floating mechanisms typically use springs as the pressure source, with the springs installed between the insert and the backing plate or casting. The locating pins are threaded onto the backing plate or casting. This approach has the following drawbacks: the spring pressure is fixed and cannot be adjusted; the floating stroke of the floating core is fixed and cannot be adjusted; and the spring is a vulnerable component in the mold, requiring the insert to be disassembled for replacement, which is labor-intensive and time-consuming. Utility Model Content

[0003] The present invention aims to provide a small floating material mechanism for thermoforming molds to solve the problem that the spring pressure in existing floating material mechanisms is a fixed value and cannot be adjusted.

[0004] To achieve the above objectives, the basic solution of this utility model is as follows: A small floating material mechanism for a thermoforming mold includes a flip-hole positioning pin, a floating material core, several nitrogen springs, and a stop block. The bottom of the flip-hole positioning pin is fixed on the stop block. The upper part of the flip-hole positioning pin passes through the mold base and the insert of the thermoforming mold in sequence, and the top of the flip-hole positioning pin extends out of the insert. The floating material core is slidably connected to the outside of the flip-hole positioning pin. The outside of the floating material core is slidably connected to both the mold base and the insert, and the top of the floating material core extends out of the insert. Several nitrogen springs are installed at the bottom of the floating material core.

[0005] Furthermore, it also includes a guide sleeve, which is disposed between the floating core and the mold base. The floating core is slidably connected inside the guide sleeve, and the guide sleeve is fixedly connected to the mold base.

[0006] Furthermore, it also includes a first mounting plate, which is fixed to the bottom of the mold base, and several of the nitrogen springs are mounted on the first mounting plate.

[0007] Furthermore, it also includes an impact block, which is fixed between the nitrogen spring and the float core.

[0008] Furthermore, it also includes a second mounting plate for fixing the float core to the impact block.

[0009] The beneficial effects of this solution are: (1) The position of the hole-turning positioning pin is fixed. Under the action of the nitrogen spring, the floating core floats to the predetermined height. After the upper mold is pressed down, it contacts the hot material sheet. This position is formed first. The part is turned into a hole after it reaches the bottom. The nitrogen spring is used as the pressure source. The pressure can be controlled by filling and releasing nitrogen in the nitrogen spring.

[0010] (2) The floating core is positioned by guide sleeve, which has higher positioning accuracy.

[0011] (3) The float stroke of the float core can be adjusted by increasing or decreasing the height of the impact block or the second mounting plate. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Detailed Implementation

[0013] 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 protection scope of the present utility model.

[0014] The reference numerals in the accompanying drawings include: 1. Flip-hole positioning pin, 2. Floating core, 3. Guide sleeve, 4. Nitrogen spring, 5. Anchor block, 6. First mounting plate, 7. Impact block, 8. Second mounting plate, 9. Mold base, 10. Insert.

[0015] Example

[0016] The basics are as follows: Figure 1 As shown: A small floating material mechanism for a thermoforming mold includes a flip-hole positioning pin 1, a floating material core 2, a guide sleeve 3, several nitrogen springs 4, a stop block 5, a first mounting plate 6, several impact blocks 7, and a second mounting plate 8. The bottom of the flip-hole positioning pin 1 is fixed to the stop block 5. The upper part of the flip-hole positioning pin 1 passes through the mold base 9 and the insert 10 of the thermoforming mold in sequence, and the top of the flip-hole positioning pin 1 extends out of the insert 10. The floating material core 2 is slidably connected to the outside of the flip-hole positioning pin 1. The outside of the floating material core 2 is slidably connected to the mold base 9 and the insert 10. The guide sleeve 3 is set between the floating material core 2 and the mold base 9. The floating material core 2 is slidably connected inside the guide sleeve 3. The guide sleeve 3 is fixedly connected to the mold base 9, and the top of the floating material core 2 extends out of the insert 10. The first mounting plate 6 is fixed to the bottom of the mold base 9 by bolts. Several nitrogen springs 4 are installed on the first mounting plate 6. Several impact blocks 7 are respectively fixed to the output shafts at the top of several nitrogen springs 4 by bolts. The floating material core 2 is fixed to several impact blocks 7 by the second mounting plate 8.

[0017] The specific implementation process is as follows: The position of the hole-flipping positioning pin 1 is fixed, and the floating core 2 floats to the predetermined height under the action of the nitrogen spring 4. After the upper mold is pressed down, it contacts the hot material sheet. This position is formed first, and the hole is flipped after the part reaches the bottom.

[0018] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0019] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Therefore, those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A small floating material mechanism for thermoforming molds, characterized in that: The device includes a locating pin, a floating core, several nitrogen springs, and a retaining block. The bottom of the locating pin is fixed to the retaining block. The upper part of the locating pin passes through the mold base and the insert of the thermoforming mold in sequence, and the top of the locating pin extends out of the insert. The floating core is slidably connected to the outside of the locating pin. The outside of the floating core is slidably connected to both the mold base and the insert, and the top of the floating core extends out of the insert. Several nitrogen springs are installed at the bottom of the floating core.

2. The small floating material mechanism for a thermoforming mold according to claim 1, characterized in that: It also includes a guide sleeve, which is disposed between the floating core and the mold base. The floating core is slidably connected inside the guide sleeve, and the guide sleeve is fixedly connected to the mold base.

3. The small floating material mechanism for a thermoforming mold according to claim 2, characterized in that: It also includes a first mounting plate, which is fixed to the bottom of the mold base, and several nitrogen springs are mounted on the first mounting plate.

4. A small floating material mechanism for a thermoforming mold according to claim 3, characterized in that: It also includes an impact block, which is fixed between the nitrogen spring and the float core.

5. A small floating material mechanism for a thermoforming mold according to claim 4, characterized in that: It also includes a second mounting plate for fixing the float core to the impact block.

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