Pressing die device and expansion equipment
By designing a mold pressing device for cold-reducing cable accessories, the use of elastic blocks and drive parts to achieve automatic clamping and expansion, the problem of uneven pressure and manual fixing strength in the prior art is solved, and the problem of uneven pressure adjustment in the prior art is improved. Production efficiency and product quality.
Patent Information
- Application Number
- CN202420628081.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-28
AI Technical Summary
In the prior art, the fixing device of the cold shrink cable accessories cannot adjust the pressure simultaneously, resulting in wear and deformation of the product, and different manual fixing strengths may cause damage and low production efficiency.
Design a mold pressing device, including a mold seat, a down pressing mold assembly and an upper pressing mold assembly, through the first and second elastic blocks and the block drive members, automatic clamping and expansion of the workpiece is achieved, thereby reducing labor Operation steps to improve production stability and efficiency.
It realizes stable clamping and automated expansion of workpieces, reduces manual operation, improves the stability and efficiency of the production process, avoids product damage, and improves product quality.
Smart Images
Figure CN222153653U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cable accessory processing, in particular to a die pressing device and expansion equipment. Background Art
[0002] With the expansion of large-scale urban electricity demand, cold shrink cable accessories have been widely used in the field of power electronics due to their advantages of structural connection, insulator, and anti-breakdown protection. The expansion process of cold shrink cable accessories is essential, and the cold shrink cable accessories need to be fixed during expansion so that the expansion cone head enters the cold shrink cable accessories to expand them.
[0003] Generally, the cable accessories are fixed manually, and the manual fixing strength is different, which may cause damage to the surface of the cold shrink cable accessories, and the manual labor intensity is high, and the production efficiency is low. The fixing device in the prior art generally directly presses the workpiece by a clamping cylinder, and the pressure cannot be adjusted synchronously with the expansion, which is easy to cause wear and deformation of the product and prone to product quality problems. Utility Model Content
[0004] The main purpose of the utility model is to provide a die pressing device, aiming to solve the technical problem that the existing fixing device cannot be adjusted synchronously with the expansion and is easy to cause product damage.
[0005] In order to achieve the above-mentioned purpose, the utility model proposes a die pressing device for fixing a workpiece to be expanded, and the die pressing device comprises:
[0006] A mold base, wherein a fixed cavity is formed in the mold base, and the fixed cavity has an inlet end and an outlet end which are arranged oppositely;
[0007] A lower die assembly, the lower die assembly being disposed at the bottom of the fixed chamber, the lower die assembly comprising a first elastic pressing block; and
[0008] At least two upper die assemblies are arranged side by side along the direction from the inlet end to the outlet end and correspond to the position of the lower die assembly, each upper die assembly includes a second elastic pressure block and a pressure block driving component, the pressure block driving component is arranged on the die base and connected to the second elastic pressure block, the pressure block driving component drives the second elastic pressure block to approach or move away from the first elastic pressure block, and when the first elastic pressure block and at least one of the second elastic pressure blocks are close to each other, they can cooperate to clamp the workpiece.
[0009] Optionally, at least one of the upper die assemblies is disposed close to the inlet end and a block driving member of the upper die assembly is a hydraulic cylinder;
[0010] And / or, at least one of the upper die components is arranged close to the outlet end and the pressing block driving member of the upper die component is a stroke-adjustable cylinder.
[0011] Optionally, the first elastic pressing block includes a first metal block and a first silicone block fixed to the first metal block;
[0012] The second elastic pressing block includes a second metal block and a second silicone block fixed to the second metal block, and the pressing block driving component is connected to the second metal block.
[0013] Optionally, the first silicone block is embedded in the first metal block, and the thickness of the first silicone block is greater than the thickness of the first metal block; the second silicone block is embedded in the second metal block, and the thickness of the second silicone block is greater than the thickness of the second metal block.
[0014] Optionally, the thickness of the first silicone block accounts for two thirds or more of the total thickness of the first elastic pressing block; the thickness of the second silicone block accounts for two thirds or more of the total thickness of the second elastic pressing block.
[0015] Optionally, a groove is formed on one side of the first elastic pressing block and / or the second elastic pressing block that are close to each other.
[0016] Optionally, a guide sleeve is provided on the die base, and the upper die assembly further comprises a guide shaft; one end of the guide shaft is connected to the second elastic pressing block, and the other end of the guide shaft can movably pass through the guide sleeve.
[0017] Optionally, the mold base includes a bottom plate, a top plate and a plurality of side plates, the bottom plate, the top plate and the plurality of side plates enclose the fixed chamber, the lower die assembly is fixed to the bottom plate, and the pressing block driving member is fixed to the top plate.
[0018] Optionally, a plurality of rotatable rollers arranged in a vertical direction are provided on one side of the fixed chamber close to the second elastic pressing block to limit the second elastic pressing block.
[0019] The utility model also provides an expansion device, comprising:
[0020] Rack; and
[0021] The die pressing device as described above is arranged on the frame.
[0022] The die device of the technical solution of the utility model is used to fix the workpiece to be expanded. A fixed chamber is opened in the die base for mounting the workpiece, and the workpiece is clamped by the upper die assembly and the lower die assembly. Specifically, the lower die assembly is provided with a first elastic pressing block, and the upper die assembly is provided with a second elastic pressing block to avoid damaging the outer surface of the workpiece; at least two upper die assemblies can be adjusted according to the expansion state, so that the second elastic pressing block is close to or away from the first elastic pressing block, and when the first elastic pressing block of the lower die assembly and the second elastic pressing block of at least one upper die assembly are close to each other, they can cooperate to clamp the workpiece, so that the workpiece can be clamped and expanded at the same time, reducing manual operation steps, improving the stability of the production process, and achieving high efficiency of automated expansion. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] 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 of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of a die pressing device according to an embodiment of the utility model;
[0025] Figure 2 For this utility model Figure 1 A schematic cross-sectional view of the die pressing device shown in ;
[0026] Figure 3 It is a partial three-dimensional structural schematic diagram of a die pressing device according to an embodiment of the utility model.
[0027] Description of Figure Numbers:
[0028] Label name Label name Label name 100 Die pressing device 15 Side panels 30 Upper die assembly 11 Fixed chamber 16 Scroll Wheel 31 The second elastic pressing block 111 Entry 20 Lower die assembly 311 The second metal block 112 Export 21 The first elastic pressing block 312 Second silicone block 12 Guide sleeve 211 First metal block 32 Pressure block drive 13 Base Plate 212 The first silicone block 33 Guide shaft 14 roof 213 Grooves
[0029] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0031] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0032] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0033] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0034] See also Figures 1 to 3 The utility model provides a die pressing device 100 for fixing a workpiece to be expanded. The die pressing device 100 includes a die base 10, a lower die assembly 20 and at least two upper die assemblies 30. Specifically, a fixed chamber 11 is provided in the die base 10, and the fixed chamber 11 has an inlet end 111 and an outlet end 112 arranged opposite to each other. The lower die assembly 20 is arranged at the bottom of the fixed chamber 11, and the lower die assembly 20 includes a first elastic pressing block 21. At least two upper die assemblies 30 are arranged side by side along the direction from the inlet end 111 to the outlet end 112 and correspond to the position of the lower die assembly 20, each upper die assembly 30 includes a second elastic pressing block 31 and a pressing block driving member 32, the pressing block driving member 32 is arranged on the die base 10 and connected to the second elastic pressing block 31, and the pressing block driving member 32 drives the second elastic pressing block 31 to approach or move away from the first elastic pressing block 21, and when the first elastic pressing block 21 and at least one second elastic pressing block 31 are close to each other, they can cooperate to clamp the workpiece.
[0035] The die device 100 of the utility model is used to fix the workpiece to be expanded. A fixed chamber 11 is provided in the die base 10 for mounting the workpiece, and the workpiece is clamped by the upper die assembly 30 and the lower die assembly 20. Specifically, the lower die assembly 20 is provided with a first elastic pressing block 21, and the upper die assembly 30 is provided with a second elastic pressing block 31 to avoid damaging the outer surface of the workpiece; at least two upper die assemblies 30 can be adjusted according to the expansion state, so that the second elastic pressing block 31 is close to or away from the first elastic pressing block 21, and when the first elastic pressing block 21 of the lower die assembly 20 and the second elastic pressing block 31 of at least one upper die assembly 30 are close to each other, they can cooperate to clamp the workpiece, so that the workpiece can be clamped and expanded at the same time, reducing manual operation steps, improving the stability of the production process, and achieving high efficiency of automated expansion.
[0036] In this embodiment, the workpiece to be expanded is a cold shrink cable accessory, and the expansion rod is extended into the workpiece from the inlet end 111 and out from the outlet end 112 by a gripper structure or a robotic arm to expand the workpiece, wherein a support tube is built into the end of the expansion rod, and the support tube extends out of the expansion rod. After the expansion rod is passed out, the support tube is retained inside the workpiece due to the tension force generated by the retraction of the workpiece, so as to facilitate subsequent installation.
[0037] like Figure 1-3 As shown, in this embodiment, two upper die assemblies 30 are provided for producing 35KV cold shrink cable accessories. In other embodiments, three or more upper die assemblies 30 may also be provided for producing 46KV cold shrink cable accessories, etc.
[0038] Preferably, at least one upper die assembly 30 is arranged close to the inlet end 111 and the block driving component 32 of the upper die assembly 30 is a hydraulic cylinder. The pressure is released by the hydraulic cylinder to make the block driving component 32 move away from the first elastic block 21, thereby reducing the resistance during the movement of the expansion rod; and / or, at least one upper die assembly 30 is arranged close to the outlet end 112 and the block driving component 32 of the upper die assembly 30 is a stroke-adjustable cylinder, which can realize the expansion of workpieces of different specifications and can also reduce damage to cold shrink cable accessories or support tubes by fine-tuning the stroke.
[0039] In this embodiment, Figure 2 or Figure 3As shown, in the two upper die assemblies 30, the block driving member 32 near the inlet end 111 is a hydraulic cylinder, and the block driving member 32 near the outlet end 112 is an air cylinder. Specifically, when expanding and opening, the hydraulic cylinder retracts 25% of the stroke, and the expansion section of the expansion rod is about to slide into the cable accessories, and the hydraulic cylinder releases 30% of the pressure to reduce resistance; thereafter, as the expansion rod moves from the inlet end 111 to the outlet end 112, the hydraulic cylinder retracts 70% of the stroke, and the expansion rod continues to expand until the hydraulic cylinder is completely retracted, leaving only the air cylinder to work. Finally, the air cylinder is completely depressurized, the pull rod is pulled out, and the expansion step is completed to ensure that the support tube is not crushed. Through the multi-stage expansion step, it can be ensured that a certain amount of activity space is retained while expanding, so that the outside of the workpiece has a certain clamping force. It can be understood that the die device 100 also includes a plurality of sensors, which sense the position of the expansion rod through the sensor, and then control the operation of the block driving member 32.
[0040] In this embodiment, the first elastic pressure block 21 includes a first metal block 211 and a first silicone block 212 fixed to the first metal block 211, and the second elastic pressure block 31 includes a second metal block 311 and a second silicone block 312 fixed to the second metal block 311. Due to the inherent flexibility and resilience of silicone, the pressure of the first elastic pressure block 21 and the second elastic pressure block 31 on the outside of the workpiece can be guaranteed, which can effectively avoid the generation of wrinkles and reduce damage to the product; the second pressure block driving member 32 is connected to the second metal block 311, and drives the second metal block 311 to drive the second elastic pressure block 31 to move, thereby improving the stability of the production process.
[0041] Specifically, in order to ensure uniform force on the outside of the workpiece and not cause damage to the outer surface of the product, and based on cost saving, the first silicone block 212 is embedded in the first metal block 211, and the thickness of the first silicone block 212 is greater than the thickness of the first metal block 211, and the second silicone block 312 is embedded in the second metal block 311, and the thickness of the second silicone block 312 is greater than the thickness of the second metal block 311.
[0042] In a preferred embodiment, the thickness of the first silicone block 212 accounts for two thirds or more of the total thickness of the first elastic pressing block 21 ; the thickness of the second silicone block 312 accounts for two thirds or more of the total thickness of the second elastic pressing block 31 .
[0043] In this embodiment, the workpiece to be expanded is a cold shrink cable accessory. In order to match its shape, a groove 213 is provided on the side where the first elastic pressure block 21 and / or the second elastic pressure block 31 are close to each other, so as to increase the contact area between the first elastic pressure block 21 and / or the second elastic pressure block 31 and the outer surface of the workpiece, so that the force is more uniform.
[0044] A guide sleeve 12 is provided on the mold base 10, and the upper mold assembly 30 also includes a guide shaft 33; one end of the guide shaft 33 is connected to the second elastic pressure block 31, and the other end of the guide shaft 33 can be movably passed through the guide sleeve 12. Through the cooperation of the guide shaft 33 and the guide sleeve 12, a certain supporting force is provided, while maintaining the stability and accuracy of the position of the second elastic pressure block 31.
[0045] Furthermore, a plurality of rotatable rollers 16 arranged in a vertical direction are provided on one side of the fixed chamber 11 close to the second elastic pressing block 31 to limit the position of the second elastic pressing block 31 and provide accurate guidance.
[0046] See also Figure 1 The mold base 10 includes a bottom plate 13, a top plate 14 and a plurality of side plates 15, which enclose a fixed chamber 11, a lower die assembly 20 is fixed to the bottom plate 13, and a pressing block driving member 32 is fixed to the top plate 14 to ensure the stability of the overall structure.
[0047] An embodiment of the utility model also provides an expansion device, which includes a frame and the above-mentioned die pressing device 100. The die pressing device 100 is arranged on the frame. It can be understood that other automated devices can be installed on the frame to drive the expansion rod to move, thereby cooperating with the die pressing device 100 to complete the expansion process.
[0048] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A die pressing device for fixing a workpiece to be expanded, characterized in that: The die pressing device comprises: A mold base, wherein a fixed cavity is formed in the mold base, and the fixed cavity has an inlet end and an outlet end which are arranged oppositely; A lower die assembly, the lower die assembly being disposed at the bottom of the fixed chamber, the lower die assembly comprising a first elastic pressing block; and At least two upper die assemblies are arranged side by side along the direction from the inlet end to the outlet end and correspond to the position of the lower die assembly, each upper die assembly includes a second elastic pressure block and a pressure block driving component, the pressure block driving component is arranged on the die base and connected to the second elastic pressure block, the pressure block driving component drives the second elastic pressure block to approach or move away from the first elastic pressure block, and when the first elastic pressure block and at least one of the second elastic pressure blocks are close to each other, they can cooperate to clamp the workpiece.
2. The die pressing device according to claim 1, characterized in that At least one of the upper die assembly is disposed close to the inlet end and the block driving member of the upper die assembly is a hydraulic cylinder; And / or, at least one of the upper die components is arranged close to the outlet end and the pressing block driving member of the upper die component is a stroke-adjustable cylinder.
3. The die pressing device according to claim 1, characterized in that The first elastic pressing block includes a first metal block and a first silicone block fixed to the first metal block; The second elastic pressing block includes a second metal block and a second silicone block fixed to the second metal block, and the pressing block driving component is connected to the second metal block.
4. The die pressing device according to claim 3, characterized in that The first silicone block is embedded in the first metal block, and the thickness of the first silicone block is greater than the thickness of the first metal block; the second silicone block is embedded in the second metal block, and the thickness of the second silicone block is greater than the thickness of the second metal block.
5. The die pressing device according to claim 3, characterized in that The thickness of the first silicone block accounts for two thirds or more of the total thickness of the first elastic pressing block; the thickness of the second silicone block accounts for two thirds or more of the total thickness of the second elastic pressing block.
6. The die pressing device according to claim 1, characterized in that A groove is formed on one side of the first elastic pressing block and / or the second elastic pressing block that are close to each other.
7. The die pressing device according to claim 1, characterized in that The die base is provided with a guide sleeve, and the upper die assembly further comprises a guide shaft; one end of the guide shaft is connected to the second elastic pressing block, and the other end of the guide shaft can movably pass through the guide sleeve.
8. The die pressing device according to claim 1, characterized in that The die base comprises a bottom plate, a top plate and a plurality of side plates, wherein the bottom plate, the top plate and the plurality of side plates enclose the fixed chamber, the lower die assembly is fixed to the bottom plate, and the pressing block driving member is fixed to the top plate.
9. The die pressing device according to claim 1, characterized in that A plurality of rotatable rollers arranged in a vertical direction are provided on one side of the fixed chamber close to the second elastic pressing block to limit the second elastic pressing block.
10. An expansion device, characterized in that The expansion device comprises: Rack; and The die pressing device according to any one of claims 1 to 9, wherein the die pressing device is arranged on the frame.