Pressing and punching mechanism for polyurethane assembly
By designing a polyurethane component pressing and punching mechanism, the punch and polyurethane press head can be quickly changed in one piece, which solves the problem of complex operation inside the mold, simplifies the mold structure, and improves production efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI WALS TECH CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-05-12
AI Technical Summary
The existing molds require operators to enter the mold to adjust and disassemble parts, which increases mold costs and assembly difficulty, and reduces production efficiency.
Design a polyurethane component pressing and punching mechanism, in which the polyurethane component and the punch fixing seat are locked together by screws, so that the punch and polyurethane pressing head can be quickly changed as a whole. The polyurethane pressing head replaces the mold pressing plate and realizes integrated operation.
It simplifies the mold structure, reduces mold costs, improves production efficiency and safety, and ensures the stability and quality of the manufactured parts.
Smart Images
Figure CN224222492U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mold technology, and in particular to a polyurethane component pressing and punching mechanism. Background Technology
[0002] In recent years, as the automotive market has continuously transformed towards new energy vehicle manufacturing and trend towards lightweighting, in order to adapt to the trend of rapid and short-cycle updates in automobile models, major automakers have also turned their attention to the vehicle's own body panels and related stamped parts, collectively referred to as components, in the development and research of new models. The requirements for these components are becoming increasingly stringent, with components trending towards lightweighting, high strength, and a wide variety of complex types. During the production process, the molds required for producing these components are usually quite complex and heavy, requiring operators to enter the molds for adjustment and disassembly, which increases mold costs, increases assembly difficulty, and reduces production efficiency. Major mold manufacturers are also facing this technical challenge.
[0003] The existing molds for producing parts require operators to enter the molds for adjustment and disassembly, which increases mold costs, assembly difficulty, and reduces production efficiency.
[0004] To address this, we propose a polyurethane component pressing and punching mechanism. Utility Model Content
[0005] In response to the shortcomings of the existing production technology, the applicant provides a polyurethane component pressing and punching mechanism, which locks the polyurethane component and the punch fixing seat together with screws, so that the punch and polyurethane pressing head can be quickly changed as a whole. The polyurethane pressing head replaces the mold pressing plate, and when the polyurethane pressing head is compressed, the polyurethane pressing head can compact the workpiece.
[0006] The technical solution adopted in this utility model is as follows:
[0007] A polyurethane component pressing and punching mechanism, comprising:
[0008] The die is set on the punch press;
[0009] Upper mold base, located above the die cavity;
[0010] Punch holder is located at the bottom of the upper die holder;
[0011] The punch is housed within the punch holder.
[0012] The polyurethane component is fixed to the bottom of the punch holder;
[0013] The polyurethane component includes a fixing block and a polyurethane pressure head. The fixing block includes a second through hole and a third through hole, with a step between the second through hole and the third through hole. The polyurethane pressure head includes an integrally formed first section and a second section. The size of the first section is larger than that of the second section. The first section is restricted by the step between the second through hole and the third through hole. The polyurethane pressure head is sleeved on the outside of the punch.
[0014] Before the polyurethane indenter is compressed, the bottom of the polyurethane indenter extends beyond the punch.
[0015] Its further features are:
[0016] The bottom of the upper die base is provided with a punch pad, and the punch fixing seat and the punch are set at the bottom of the punch pad. The punch fixing seat and the punch pad are fixed to the bottom of the upper die base by bolts.
[0017] The polyurethane assembly also includes a gasket, which is disposed at the bottom of the punch holder. The fixing block and the polyurethane pressure head are disposed at the bottom of the gasket, and the fixing block and the gasket are fixed to the bottom of the punch holder by screws.
[0018] The polyurethane pressure head has a first through hole, and the punch is disposed in the first through hole of the polyurethane pressure head.
[0019] The second through hole and the third through hole are connected, and the diameter of the second through hole is larger than the diameter of the third through hole.
[0020] The size of the first segment is larger than the size of the second segment. The first segment of the polyurethane pressure head is located in the second through hole of the fixing block, and the second segment of the polyurethane pressure head is located in the third through hole of the fixing block.
[0021] The centerline of the second through hole coincides with the centerline of the third through hole.
[0022] The top of the die cavity is provided with a lower die insert, and the workpiece is placed on the top of the die cavity and the lower die insert.
[0023] The beneficial effects of this utility model are as follows:
[0024] This utility model features a compact and reasonable structure, and is easy to operate. The polyurethane component is locked to the punch holder with screws, allowing for quick and easy replacement of the punch and polyurethane pressure head. The polyurethane pressure head replaces the die pressure plate, and when compressed, it effectively presses the workpiece firmly. This not only saves die space and simplifies the die structure, facilitating on-site adjustments, but also reduces die costs and achieves a lightweight design. Primarily used for die pressing and punching, it also increases production efficiency and reduces die costs. It ensures the stability of the workpiece, improves production efficiency, guarantees operator safety, reduces development costs, and improves the production quality of automotive parts.
[0025] In addition, this utility model also has the following advantages:
[0026] (1) During one operation: the descent of the upper die base is divided into three stages; the first stage: initially, the upper die base is at its highest point, the die is on the worktable of the punch press, and the die remains stationary throughout the operation; the polyurethane pressure head does not contact the workpiece, and the workpiece is placed above the die and the lower die insert; the upper die base begins to move downward, the polyurethane pressure head does not contact the workpiece, the polyurethane pressure head is not under force, and the polyurethane pressure head is not compressed; the second stage: the upper die base continues to move downward, the polyurethane pressure head begins to contact the workpiece, the polyurethane pressure head begins to receive pressure, and the polyurethane pressure head begins to be compressed. As the upper die base continues to move downward, the polyurethane pressure head is continuously compressed to achieve the pressure required for punching. When the polyurethane pressure head is compressed to the designed compression stroke, the punch begins to contact the workpiece; the third stage: the upper die base continues to move downward, the polyurethane pressure head continues to be compressed to make the workpiece compact, and at the same time, the punch and the lower die insert form a shearing force to punch the workpiece, completing the punching process. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the first stage of one operation process of this utility model.
[0028] Figure 2 This is a schematic diagram of the second stage of a single operation process of this utility model.
[0029] Figure 3 This is a schematic diagram of the third stage in one operation of this utility model.
[0030] Figure 4 This is a schematic diagram of the fixing block and polyurethane pressure head of this utility model.
[0031] Figure 5 This is a schematic diagram of the fixing block of this utility model.
[0032] Figure 6 This is a schematic diagram of the polyurethane pressure head of this utility model.
[0033] Wherein: 100, upper die holder; 110, punch pad; 120, punch fixing seat; 130, gasket; 140, fixing block; 141, second through hole; 142, third through hole; 150, polyurethane pressure head; 151, first through hole; 160, punch; 170, part; 180, lower die insert; 190, die cavity. Detailed Implementation
[0034] The specific embodiments of this utility model are described below with reference to the accompanying drawings.
[0035] like Figures 1-6As shown, a polyurethane component pressing and punching mechanism includes an upper die base 100, a punch pad 110, a punch fixing seat 120, a polyurethane gasket 130, a fixing block 140, a polyurethane pressing head 150, a punch 160, a lower die insert 180, and a die cavity 190. The punch pad 110 is disposed at the bottom of the upper die base 100, the punch 160 is disposed at the bottom of the punch pad 110, and the punch fixing seat 120 is disposed at the bottom of the punch pad 110 and sleeved on the outside of the punch 160 to fix the punch 160.
[0036] A gasket 130 is provided at the bottom of the punch holder 120. A polyurethane pressure head 150 is provided at the bottom of the gasket 130. A first through hole 151 is provided inside the polyurethane pressure head 150. The polyurethane pressure head 150 is sleeved on the outside of the punch 160. The punch 160 is located in the first through hole 151 of the polyurethane pressure head 150.
[0037] The bottom of the gasket 130 is also provided with a fixing block 140. The fixing block 140 has a second through hole 141 and a third through hole 142 arranged sequentially from top to bottom. The second through hole 141 and the third through hole 142 are connected. The diameter of the second through hole 141 is larger than the diameter of the third through hole 142. A step is provided between the second through hole 141 and the third through hole 142.
[0038] The polyurethane pressure head 150 includes an integrally formed first section 152 and a second section 153. The size of the first section 152 is larger than that of the second section 153. The first section 152 of the polyurethane pressure head 150 is located in the second through hole 141 of the fixing block 140, and the second section 153 of the polyurethane pressure head 150 is located in the third through hole 142 of the fixing block 140. The first section 152 of the polyurethane pressure head 150 is restricted by the step between the second through hole 141 and the third through hole 142.
[0039] In one embodiment, the center line of the second through hole 141 coincides with the center line of the third through hole 142.
[0040] The polyurethane pressure head 150, the fixing block 140, and the gasket 130 are polyurethane components.
[0041] The fixing block 140 is fixed to the punch fixing seat 120 by screws, so that the polyurethane component and the punch fixing seat 120 are integrated. The punch fixing seat 120 and the punch pad 110 are fixedly connected to the upper mold base 100 by bolts.
[0042] The die cavity 190 is located below the upper die base 100, and the top of the die cavity 190 is provided with a lower die insert 180.
[0043] In the initial state of the mold, the polyurethane pressure head 150 is not in contact with the workpiece 170, and the bottom of the polyurethane pressure head 150 extends beyond the punch 160.
[0044] In one embodiment, the upper mold base 100 is raised or lowered by the lifting device of the machine tool.
[0045] During a single operation: the descent of the upper mold base 100 is divided into three stages;
[0046] Phase 1: Initially, the upper die holder 100 is at its highest point, and the die cavity 190 is on the worktable of the punch press. The die cavity 190 remains stationary throughout the entire movement. The polyurethane pressure head 150 is not in contact with the workpiece 170, and the workpiece 170 is placed above the die cavity 190 and the lower die insert 180. The upper die holder 100 begins to move downwards, and the polyurethane pressure head 150 is not in contact with the workpiece 170. The polyurethane pressure head 150 is not under force and is not compressed.
[0047] Second stage: The upper die holder 100 continues to move downward, the polyurethane pressure head 150 begins to contact the workpiece 170, the polyurethane pressure head 150 begins to receive pressure, the polyurethane pressure head 150 begins to be compressed, as the upper die holder 100 continues to move downward, the polyurethane pressure head 150 is continuously compressed to achieve the pressure force required for punching, when the polyurethane pressure head 150 is compressed to the designed compression stroke, the punch 160 begins to contact the workpiece 170.
[0048] Third stage: The upper mold base 100 continues to move downward, and the polyurethane pressure head 150 continues to be compressed to make the part 170 compact. At the same time, the punch 160 and the lower mold insert 180 form a shearing force to punch the part 170, completing the punching process.
[0049] The polyurethane assembly is secured to the punch holder 120 with screws, allowing for quick and easy replacement of the punch 160 and the polyurethane pressure head 150. The polyurethane pressure head 150 replaces the die pressure plate, and when compressed, it firmly presses the workpiece 170. This not only saves die space and simplifies the die structure, facilitating on-site adjustments, but also reduces die costs and achieves a lightweight design. Primarily used for die pressing and punching, it also increases production efficiency and reduces die costs. It ensures the stability of the workpiece 170, improves production efficiency, guarantees operator safety, reduces development costs, and improves the production quality of automotive parts.
[0050] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.
Claims
1. A polyurethane component pressing and punching mechanism, characterized in that, include: The die (190) is set on the punch press; The upper mold base (100) is located above the die (190); Punch holder (120) is located at the bottom of upper die holder (100); The punch (160) is disposed within the punch holder (120); The polyurethane assembly is fixed to the bottom of the punch holder (120); The polyurethane component includes a fixing block (140) and a polyurethane pressure head (150). The fixing block (140) includes a second through hole (141) and a third through hole (142). A step is provided between the second through hole (141) and the third through hole (142). The polyurethane pressure head (150) includes an integrally formed first section (152) and a second section (153). The size of the first section (152) is larger than the size of the second section (153). The first section (152) is restricted by the step between the second through hole (141) and the third through hole (142). The polyurethane pressure head (150) is sleeved on the outside of the punch (160). Before the polyurethane indenter (150) is compressed, the bottom of the polyurethane indenter (150) extends beyond the punch (160).
2. The polyurethane component pressing and punching mechanism as described in claim 1, characterized in that: The upper die holder (100) is provided with a punch pad (110) at the bottom, and a punch fixing seat (120) and a punch (160) are provided at the bottom of the punch pad (110). The punch fixing seat (120) and the punch pad (110) are fixed to the bottom of the upper die holder (100) by bolts.
3. The polyurethane component pressing and punching mechanism as described in claim 1, characterized in that: The polyurethane assembly also includes a gasket (130), which is disposed at the bottom of the punch holder (120). A fixing block (140) and a polyurethane pressure head (150) are disposed at the bottom of the gasket (130). The fixing block (140) and the gasket (130) are fixed to the bottom of the punch holder (120) by screws.
4. A polyurethane component pressing and punching mechanism as described in any one of claims 2-3, characterized in that: The polyurethane pressure head (150) is provided with a first through hole (151), and the punch (160) is provided in the first through hole (151) of the polyurethane pressure head (150).
5. The polyurethane component pressing and punching mechanism as described in claim 1, characterized in that: The second through hole (141) and the third through hole (142) are connected, and the diameter of the second through hole (141) is larger than the diameter of the third through hole (142).
6. A polyurethane component pressing and punching mechanism as described in any one of claims 3 and 5, characterized in that: The size of the first segment (152) is larger than that of the second segment (153). The first segment (152) of the polyurethane pressure head (150) is located in the second through hole (141) of the fixing block (140), and the second segment (153) of the polyurethane pressure head (150) is located in the third through hole (142) of the fixing block (140).
7. The polyurethane component pressing and punching mechanism as described in claim 1, characterized in that: The center line of the second through hole (141) coincides with the center line of the third through hole (142).
8. The polyurethane component pressing and punching mechanism as described in claim 1, characterized in that: The top of the die (190) is provided with a lower die insert (180), and the part (170) is placed on the top of the die (190) and the lower die insert (180).