Pump head cold pressing die structure
By designing a pump head cold press mold structure including a first mold core, a second mold core, a lower mold pad and a core sleeve, the problem of insufficient lower mold height of the existing mold is solved, and the mold surface fitting and mold life are improved under the stressed state are achieved.
Patent Information
- Application Number
- CN202420578136.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-23
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-03-23
AI Technical Summary
The existing pump head cold press molds have low lower mold height and insufficient overall strength, which leads to easy gaps between the die cores, resulting in problems such as clamping and strain on the die surface, and the mold life is short and the manufacturing cost is high.
A pump head cold press mold structure is designed, including the first mold core, the second mold core, the lower mold pad and the core sleeve. By setting an appropriate interference amount and pressing amount, combined with the use of hot pressing technology and the use of stress rings, the pressure bearing capacity and number of pressure bearings of the lower mold structure are improved.
Ensure the fit of the die-separating surface under the stress state, reduce the occurrence of product surface clamps and strains, significantly improve the mold life and pressure-bearing ability, and reduce manufacturing costs.
Smart Images
Figure CN222587865U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical manufacturing, in particular to a pump head cold pressing mold structure. Background Art
[0002] In the prior art, the cold pressing mold for the pump head has a relatively low lower mold height and insufficient overall strength. As the cold pressing process progresses, a gap is easily generated between mold core 1 and mold core 2, and material is easily clamped on the parting surface during the process, which can lead to product damage. There are also problems with the mold life being relatively short and the manufacturing cost being relatively high. Utility Model Content
[0003] The purpose of the utility model is to provide a pump head cold pressing mold structure to address the defects in the prior art, so as to ensure the fit of the parting surface under stress, reduce the occurrence of material clamping and strain on the product surface, and the improved lower mold structure can withstand greater pressure and a higher number of pressure times, effectively improving the life of the mold.
[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a pump head cold pressing mold structure, comprising a first mold core, a second mold core, a lower mold pad, and a core sleeve; the first mold core, the second mold core, and the lower mold pad are arranged in the core sleeve from top to bottom in sequence; the unilateral interference amount between the first mold core and the core sleeve is set at 0.4-0.5mm, and the pressing amount is set at 6-7mm; the unilateral interference amount between the second mold core and the core sleeve is set at 0.4-0.5mm, and the pressing amount is set at 5-6mm; the lower mold pad and the core sleeve are hot pressed, and the unilateral interference amount is set at 0.3-0.4mm.
[0005] Furthermore, a stress ring is arranged outside the core sleeve.
[0006] Furthermore, the heights of the core sleeve and the stress ring increase as the force requirements increase.
[0007] Furthermore, the stress ring has an additional height of 9 to 10 mm compared to the core sleeve.
[0008] Furthermore, the stress ring has an additional height of 9.5 mm compared to the core sleeve.
[0009] Furthermore, the single-sided interference between the first mold core and the core sleeve is set at 0.45 mm, and the pressing amount is set at 6.5 mm.
[0010] Furthermore, the single-sided interference between the second mold core and the core sleeve is set at 0.43 mm, and the pressing amount is set at 5.3 mm.
[0011] Furthermore, the lower die pad and the core sleeve are hot pressed, and the single-side interference is set at 0.3.5 mm.
[0012] The invention comprises a first mold core, a second mold core, a lower mold pad and a core sleeve; the first mold core, the second mold core and the lower mold pad are arranged in the core sleeve in sequence from top to bottom; the single-sided interference between the first mold core and the core sleeve is set at 0.4-0.5mm, and the pressing amount is set at 6-7mm; the single-sided interference between the second mold core and the core sleeve is set at 0.4-0.5mm, and the pressing amount is set at 5-6mm; the lower mold pad and the core sleeve are hot-pressed, and the single-sided interference is set at 0.3-0.4mm, so that the parting surface can still be fitted under stress, the occurrence of material clamping and tearing on the product surface is reduced, the improved lower mold structure can withstand greater pressure and a higher number of pressure times, and the mold life is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0014] Figure 1 It is a schematic diagram of a cold pressing mold structure of a pump head of the utility model;
[0015] Figure 2 This is a cross-sectional view of a pump head cold pressing mold structure of the utility model;
[0016] Figure 3 It is a three-dimensional diagram of a cold pressing mold structure of a pump head of the utility model;
[0017] Figure 4 This is a front view of a pump head cold pressing mold structure of the utility model;
[0018] Reference numerals:
[0019] The first mold core 1, the second mold core 2, the lower mold cushion block 3, the core sleeve 4, and the stress ring 5. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0021] In the description of the present invention, it should be noted that the directions or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.
[0022] A pump head cold pressing mold structure, such as Figure 1 As shown, it includes a first mold core 1, a second mold core 2, a lower mold pad 3, and a core sleeve 4; the first mold core 1, the second mold core 2, and the lower mold pad 3 are arranged in the core sleeve 4 from top to bottom in sequence; the unilateral interference amount between the first mold core 1 and the core sleeve 4 is set at 0.4-0.5mm, and the pressing amount is set at 6-7mm; the unilateral interference amount between the second mold core 2 and the core sleeve 4 is set at 0.4-0.5mm, and the pressing amount is set at 5-6mm; the lower mold pad 3 and the core sleeve 4 are hot pressed, and the unilateral interference amount is set at 0.3-0.4mm.
[0023] Specifically, the invention comprises a first mold core 1, a second mold core 2, a lower mold pad 3, and a core sleeve 4; the first mold core 1, the second mold core 2, and the lower mold pad 3 are sequentially arranged in the core sleeve 4 from top to bottom to increase the height of the core sleeve, cooperate with the first mold core 1, the second mold core 2, and the lower mold pad 3 to improve the pressure-bearing capacity and the number of pressure-bearing times of the lower mold structure, and the unilateral interference of the first mold core 1 and the core sleeve 4 is set at 0.4-0.5mm, and the pressing amount is set at 6-7mm; the unilateral interference of the second mold core 2 and the core sleeve 4 is set at 0.4-0.5mm, and the pressing amount is set at 5-6mm; the lower mold pad 3 and the core sleeve 4 are hot pressed, and the unilateral interference is set at 0.3-0.4mm, so as to ensure that during the cold extrusion process, the lower mold has sufficient supporting force, and the parting surface can still be fitted under stress, thereby reducing the occurrence of material clamping and strain on the product surface. The improved lower mold structure can withstand greater pressure and a higher number of pressures, thereby effectively improving the life of the mold.
[0024] As a preferred embodiment of the above, Figure 1 As shown, a stress ring 5 is further provided outside the core sleeve 4 .
[0025] Specifically, by further arranging a stress ring 5 outside the core sleeve 4, the height of the stress ring and the core sleeve is further increased, and the pressure-bearing capacity and the number of pressure-bearing times of the lower mold structure are more significantly improved.
[0026] As a preferred embodiment of the above, Figure 1 As shown, the heights of the core sleeve 4 and the stress ring 5 increase as the force requirements increase.
[0027] As a preferred embodiment of the above, Figure 1 As shown, the stress ring 5 has an additional height of 9 to 10 mm compared to the core sleeve 4 .
[0028] As a preferred embodiment of the above, Figure 1 As shown, the stress ring 5 has an additional height of 9.5 mm compared to the core sleeve 4 .
[0029] Specifically, the heights of the core sleeve 4 and the stress ring 5 increase as the force requirements increase. The stress ring 5 has an additional height of 9.5 mm compared to the core sleeve 4, which further increases the height of the stress ring and the core sleeve, and more significantly improves the pressure-bearing capacity and number of pressure-bearing times of the lower mold structure.
[0030] As a preferred embodiment of the above, Figure 1 As shown, the single-side interference between the first mold core 1 and the core sleeve 4 is set at 0.45 mm, and the pressing amount is set at 6.5 mm.
[0031] Specifically, by setting the single-sided interference fit between the first mold core 1 and the core sleeve 4 at 0.45 mm and the pressing fit at 6.5 mm, it is ensured that the first mold core 1 and the core sleeve 4 have sufficient supporting force, and the parting surface can still be fitted under stress, thereby reducing the occurrence of material clamping and tearing on the product surface.
[0032] As a preferred embodiment of the above, Figure 1 As shown, the single-sided interference between the second mold core 2 and the core sleeve 4 is set at 0.43 mm, and the pressing amount is set at 5.3 mm.
[0033] Specifically, the unilateral interference between the second mold core 2 and the core sleeve 4 is set at 0.43 mm, and the pressing amount is set at 5.3 mm, so as to ensure that the second mold core 2 and the core sleeve 4 have sufficient supporting force, and the parting surface can still be fitted under stress, thereby reducing the occurrence of material clamping and tearing on the product surface.
[0034] As a preferred embodiment of the above, Figure 1 As shown, the lower die pad 3 and the core sleeve 4 are hot pressed, and the single-side interference is set at 0.3.5 mm.
[0035] Specifically, by hot pressing the lower die pad 3 and the core sleeve 4, the single-side interference is set at 0.3.5 mm to ensure that the lower die pad 3 and the core sleeve 4 have sufficient supporting force, and the parting surface can still be fitted under stress, thereby reducing the occurrence of material clamping and tearing on the product surface.
[0036] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A pump head cold pressing mold structure, characterized in that: It comprises a first mold core (1), a second mold core (2), a lower mold cushion block (3), and a core sleeve (4); The first mold core (1), the second mold core (2), and the lower mold cushion block (3) are arranged in sequence from top to bottom in the core sleeve (4); The single-side interference between the first mold core (1) and the core sleeve (4) is set at 0.4-0.5 mm, and the pressing amount is set at 6-7 mm; The single-side interference between the second mold core (2) and the core sleeve (4) is set at 0.4-0.5 mm, and the pressing amount is set at 5-6 mm; The lower die pad (3) and the core sleeve (4) are hot pressed, and the single-side interference is set at 0.3-0.4 mm.
2. The pump head cold pressing mold structure according to claim 1, characterized in that: A stress ring (5) is also arranged outside the core sleeve (4).
3. The pump head cold pressing mold structure according to claim 2, characterized in that: The heights of the core sleeve (4) and the stress ring (5) increase as the force requirements increase.
4. The pump head cold pressing mold structure according to claim 3, characterized in that: The stress ring (5) has an additional height of 9 to 10 mm compared to the core sleeve (4).
5. The pump head cold pressing mold structure according to claim 4, characterized in that: The stress ring (5) has an additional height of 9.5 mm compared to the core sleeve (4).
6. The pump head cold pressing mold structure according to claim 1, characterized in that: The single-sided interference fit between the first mold core (1) and the core sleeve (4) is set at 0.45 mm, and the pressing fit is set at 6.5 mm.
7. The pump head cold pressing mold structure according to claim 6, characterized in that: The single-sided interference fit between the second mold core (2) and the core sleeve (4) is set at 0.43 mm, and the pressing fit is set at 5.3 mm.
8. The pump head cold pressing mold structure according to claim 7, characterized in that: The lower die pad (3) and the core sleeve (4) are hot pressed, and the single-side interference is set at 0.3.5 mm.