Quick-change insert structure of injection mold

Abstract

The utility model discloses a quick-change insert structure of an injection mold. The quick-change insert structure comprises a fixed mold insert, a first locking block, a second locking block and a fixed mold plate, the fastening part of the fixed mold insert is obliquely arranged, the lower part is a fastening surface, the upper part is a tilting surface, the fastening end of the first locking block is an inclined convex block, and the second locking block is provided with an inclined second locking surface. Through cooperation of the first locking block and the second locking block as well as arrangement of the positioning hole and the buffer part, the fixed mold insert is fastened when being assembled and is easily loosened when being disassembled, and the technical problem of mold replacement requirements in production of the injection mold is solved. Through the mechanism for quickly replacing the insert, the operation process is simplified, the production efficiency is improved, the production efficiency is effectively improved, the cost is reduced, the production flexibility is improved, and remarkable economic benefits and competitive advantages are brought to production.

Description

Technical Field

[0001] The utility model relates to the field of injection mold manufacturing, in particular to an injection mold quick-change insert structure. Background Art

[0002] In the field of plastic mold manufacturing, in order to reduce costs and improve production efficiency, the method of switchable partial inserts is adopted. This method achieves rapid switching of product status by embedding replaceable partial inserts in the mold. For example, to change the logo of a product, it is only necessary to replace the partial insert without replacing the entire mold, thereby saving manufacturing costs, significantly shortening the time of product switching, and improving production efficiency and flexibility.

[0003] When the insert to be replaced is located on the product's exterior surface, the insert is usually positioned and fixed by locking the mounting plate or bottom screws. However, this method may bring operational complexity when the insert needs to be replaced, because all mold parts related to it must be disassembled, including the mounting plate or bottom screws. This will increase the operation time and energy consumption, and requires careful planning and operation to ensure that the replacement process goes smoothly and does not affect the integrity and function of other components.

[0004] For large and medium-sized molds and in-machine production molds, fully disassembling mold parts for insert switching is a time-consuming and labor-intensive operation that affects production efficiency. This leads to increased production line downtime, hindered production plan execution, and reduced production efficiency and capacity utilization. In order to optimize this process, detachable local fixtures can be designed, and quick-change systems or automated devices can be introduced to reduce downtime and operational complexity, improve production efficiency and precision, thereby reducing costs and enhancing competitiveness. Utility Model Content

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the utility model is to design a quick disassembly and replacement structure, which can enable the injection mold to realize the quick switching of inserts on the injection molding machine. This structure can lock the inserts when loading and easily loosen the inserts when removing by disassembling the matching parts of the mold periphery and using the mechanical action between the structures, thereby realizing convenient insert switching. This design can meet the needs of quickly and conveniently switching the fixed mold appearance surface inlay structure on the injection molding machine, greatly improving production efficiency and flexibility.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A quick-change insert structure for an injection mold includes a fixed mold insert and a first locking block. The fixed mold insert is provided with a fastening portion, which is arranged in an inclined manner, with a fastening surface at the bottom and a lifting surface at the top; the first locking block is provided with a fastening end, which is an inclined protrusion; the fixed mold insert can be tightly fixed to the mold insert when installed by means of the inclined fastening portion and the inclined protrusion of the locking block, and the fixed mold insert can be easily loosened by the lifting surface when removed, thereby realizing the rapid switching of the fixed mold insert, thereby solving the technical problem of mold change requirements in injection mold production.

[0008] As a further improvement of the present invention: the other end of the fastening end of the first locking block is further provided with a first locking surface, and the first locking surface is inclined.

[0009] As a further improvement of the utility model: it also includes a second locking block, the second locking block is provided with a second locking surface, the second locking surface is connected to the first locking surface, and a force is generated to tighten the first locking block.

[0010] As a further improvement of the utility model: the first locking block is provided with a T-slot, and the second locking block is provided with a T-block. The T-block is detachably connected to the T-slot, and when connected, the first locking block and the second locking block can enhance the locking stability when installed.

[0011] As a further improvement of the present invention: the first locking block is provided with a lifting hole, and the second locking block is provided with a pulling hole, which is convenient for operators to take out and is more convenient when replacement or maintenance is required.

[0012] As a further improvement of the utility model: it also includes a fixing mechanism, and the T block is connected to the second locking block through the fixing mechanism, thereby enhancing the connection stability and reliability of the T block.

[0013] As a further improvement of the present invention: the fixing mechanism is fixedly connected using screws or bolts, which is convenient for quick installation and disassembly.

[0014] As a further improvement of the present invention: a fixing portion is provided at the bottom of the second locking block, and the fixing portion is provided on one side of the T block. Its function is to fix the connection of the second locking block during installation, thereby enhancing the stability of the second locking block and the firmness of locking the first locking block.

[0015] As a further improvement of the utility model: the fixing portion is two groups of fixing holes, which can provide more fixing points, so that the second locking block can be connected more evenly and share the fixing force, further increasing the connection firmness.

[0016] As a further improvement of the present invention: the fixing holes are fixed with screws or bolts, which facilitates quick installation and disassembly.

[0017] As a further improvement of the utility model: it also includes a fixed mold plate, the fixed mold insert is arranged on the fixed mold plate, the fixed mold plate is provided with a positioning hole, the fixed mold insert is inserted after being positioned through the positioning hole, thereby improving the accuracy of the fixed mold insert during installation and improving the working efficiency.

[0018] As a further improvement of the utility model: a buffer portion is provided at the bottom of the positioning hole, and when the fixed mold insert is placed, the bottom contacts the buffer portion, thereby reducing the risk of damage caused by vibration or impact and reducing stress concentration.

[0019] As a further improvement of the utility model: the lift-up surface is in contact with the reverse bevel of the fastening end, and the reverse bevel makes the height difference of the insert surface be 4.3 mm.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] By quickly switching the structure of the fixed mold insert, downtime can be reduced, production flexibility can be improved, and the operation process can be simplified, which effectively improves production efficiency, reduces costs, and improves production flexibility. The simplified mold operation process makes the injection mold manufacturing process more efficient and flexible, and can meet the market demand for personalized products, bringing significant economic benefits and competitive advantages to production. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 It is a schematic diagram of a specific implementation case of the utility model;

[0024] Figure 3 This is a schematic diagram of the first step of disassembly;

[0025] Figure 4 This is a schematic diagram of the second step of disassembly;

[0026] Figure 5 This is a schematic diagram of the disassembly step three;

[0027] Reference numerals:

[0028] 1. Fixed template; 11. Positioning hole; 12. Buffer part;

[0029] 2. Fixed mold insert; 21. Warping surface; 22. Fastening surface;

[0030] 3. First locking block; 31. Fastening end; 32. First locking surface; 33. T-slot; 34. Lifting hole;

[0031] 4. Second locking block; 41. Second locking surface; 42. T block; 43. Fixing portion; 431. First screw; 432. Second screw; 44. Extraction hole; 45. Third locking surface. DETAILED DESCRIPTION

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] In the description of the present utility model, it needs to be understood that the orientations or positional relationships indicated by terms such as "upper end face", "lower end face", "top", "bottom", "left" and "right" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present utility model. Therefore, they cannot be understood as limitations on the actual use direction of the present utility model.

[0034] The present invention is further described with reference to the accompanying drawings and embodiments:

[0035] When replacing the inserts of the current mold, it is necessary to unload and completely disassemble it first. This operation is very cumbersome, consumes a lot of manpower and time, and has an adverse impact on production efficiency. In order to solve this problem, we designed a new structure that allows the mold to be quickly replaced on the machine, thereby improving operating efficiency and saving costs.

[0036] Detailed description of the utility model:

[0037] An injection mold quick-change insert structure includes a fixed mold insert 2, a first locking block 3 and a fixed mold plate 1. The fixed mold insert 2 is used to fix the appearance of the product or the shape of other specific functions. Its fastening part is inclined, with a fastening surface 22 at the bottom for fastening connection with other parts, and a lifting surface 21 at the top for easily loosening the insert during disassembly. The fixed mold insert 2 is inserted into the fixed mold plate 1 after being positioned through a positioning hole 11; the first locking block 3 is used to fix the fixed mold insert 2, and its fastening end 31 is an inclined protrusion, which cooperates with the fastening part of the fixed mold insert 2 to ensure fastening during installation; the fixed mold plate 1 is provided with a positioning hole 11, which is used to ensure that the fixed mold insert 2 is installed in the correct position, provide positioning support and guidance for it, and ensure the correct assembly and operation of the mold parts. The fixed mold insert 2 is inserted into the fixed mold plate 1 after being positioned through the positioning hole 11, which can play a role in positioning and fixing.

[0038] Furthermore, in addition to the original fastening end 31, the first locking block 3 is also provided with a first locking surface 32. The first locking surface 32 is also inclined, and the newly added first locking surface 32 can provide additional fixing force, strengthen the connection of the first locking block 3 on the fixed mold plate 1, effectively prevent the fixed mold insert from moving or loosening during the production process, and improve the stability of the production line.

[0039] Furthermore, the second locking block 4 is a component used to reinforce the first locking block 3, and is provided with an inclined second locking surface 41. During installation, the second locking surface 41 contacts the first locking surface 32 on the first locking block 3, generating a force, thereby making the first locking block 3 more secure. The addition of the second locking block 4 further enhances the fixing effect of the first locking block 3, ensures the stable connection of the fixed mold insert during the production process, and reduces production failures caused by looseness.

[0040] Furthermore, the T-slot 33 of the first locking block 3 is obliquely engaged with the T-block 42 of the second locking block 4, so that the first locking block 3 and the second locking block 4 can enhance the locking stability when they are installed. The cooperation between the T-slot 33 and the T-block 42 forms an additional fixed connection force.

[0041] Furthermore, the T block 42 is firmly fixed to the second locking block 4 by using screws or bolts to enhance the connection stability and reliability of the T block 42 .

[0042] Furthermore, the fixing portion 43 of the second locking block 4 is composed of two groups of screw holes and screws, which are used to fix the connection between the second locking block 4 and the fixed template 1 during installation. The addition of two groups of screw holes and screws provides more fixing points, so that the second locking block 4 is connected to the fixed template 1 more evenly, shares the fixing force, and enhances the stability and firmness of the second locking block 4.

[0043] Furthermore, a lifting hole 34 and a pulling hole 44 are provided, wherein the lifting hole 43 is arranged above the first locking block 3, and the pulling hole 44 is arranged above the second locking block 4. The operator can easily lift or pull out the locking block through these holes, which is convenient for operation and maintenance.

[0044] Furthermore, the lift-off surface 21 and the fastening end 31 are in reverse bevel contact, and the reverse bevel makes the height difference of the insert surface 4.3 mm. The raised lift-off surface 21 of the first locking block 3 makes it easy to remove the fixed mold insert 2, reducing the time and labor cost during replacement or maintenance and improving the convenience of operation.

[0045] The working principle of this utility model:

[0046] 1. Remove the fixed mold insert 2

[0047] When the insert needs to be removed, the fastening surface 22 of the fastening portion of the fixed mold insert 2 is contacted by the lower side of the fastening end 31 of the first locking block 3 with an inclined surface, and is firmly fixed in the positioning hole 11 of the fixed mold plate 1 under the force applied by the fastening end 31.

[0048] When the disassembly operation begins, the operator first loosens the second screw 432 of the fixing part 43 and removes it. In this way, the stress of the wedge-shaped structure of the fixing part 43 will be reduced, and the force on both sides will be reduced. Then, the first screw 431 is loosened and removed, and the second locking block 4 becomes movable, which facilitates the disassembly of the second locking block 4.

[0049] Then start the removal and replacement step one, use a tool to insert the extraction hole 44, and use the friction force to pull the second locking block 4 to move laterally. At this time, since the T block 42 is fixed to the T slot 33, the first locking block 3 will be pulled to move laterally. Since the fastening end 31 of the first locking block 3 is in reverse bevel contact with the lift-up surface 21 of the fixed mold insert 2, when the first locking block 3 moves to the right, it will drive the fastening end 31 to move to the right, and at the same time, an upward force is applied to the lift-up surface 21, so that the fixed mold insert 2 moves upward. When the first locking block 3 continues to move to the right until the fastening end 31 leaves the lift-up surface 21, the fixed mold insert 2 protrudes upward to the highest position, and the fixed mold insert 2 can be taken out from above.

[0050] Continue with the second step of replacement, insert the tool into the extraction hole 44, and lift the second locking block 4 upward with the help of friction. During this process, the second locking block 4 starts to move upward, and at the same time drives the T block 42 to move upward. Since the T block 42 is in the inclined T groove 33 at this time, the T block 42 and the T groove 33 are in reverse bevel contact. When the T block 42 applies an upward force, the locking surface of the T groove 33 will be subjected to a rightward force, so that the first locking block 3 is driven to move to the right and continue to move away from the fixed mold insert 2 until it reaches the limit state.

[0051] The last step is the replacement step three. At this time, after removing the second locking block 4, a tool can be used to insert into the lifting hole 34 of the first locking block 3 as needed, and the first locking block 3 can be pulled up and removed with the help of friction.

[0052] The entire disassembly process involves the mechanical relationship between the first locking block 3, the second locking block 4, the T block 42, the fixed mold insert 2 and the fixed mold plate 1. By reasonably applying force and utilizing the friction force of the contact surface, the disassembly process is smoother and more efficient.

[0053] 2. Install the fixed mold insert 2

[0054] When reinstalling the fixed mold insert 2, first, insert the replaced fixed mold insert 2 into the positioning hole 11 of the fixed mold plate 1 from above. At this time, the buffer portion 12 at the bottom of the positioning hole 11 plays a key role, which allows the fixed mold insert 2 to be placed slowly, avoiding the damage caused by the large impact force caused by direct contact with the bottom. At the same time, the buffer portion 12 can also effectively put the fastening end into an appropriate horizontal position, providing convenience for the subsequent insertion and fixation of the fastening end 31.

[0055] Next, use the lifting hole 34 to put the first locking block 3 in and move it toward the fixed mold insert 2 until the fastening end 31 contacts the fastening surface 22 below. During this process, the buffer 12 causes the fastening surface 22 to contact the lower inclined surface of the fastening end 31, which will generate a certain resistance, indicating that the first locking block 3 has reached the installation position. Use a tool to insert the lifting hole 44, and use the friction force to slowly move the second locking block 4 toward the fixed mold plate 1. During the downward movement of the second locking block 4, the T block 42 contacts the T slot 33 and is gradually inserted into the slot. Due to the force generated by the inclined surface of the T slot 33, the first locking block 3 moves to the left.

[0056] As the first locking block 3 moves to the left, the lower part of the fastening end 31 continues to exert a downward force on the fastening surface 22, and the buffer portion 12 is compressed and deformed, and the fixed mold insert 2 continues to move downward until it is finally completely fixed in the positioning hole 11. At this time, the first locking block 3 has moved to the limit position.

[0057] Next, take out the screws and tighten the first screw 431 into the first screw hole near the T-block 42. As the first screw 431 continues to enter the first screw hole, lateral stress will be generated on both sides of the first screw hole. Since the T-block 42 is fixed to the fixing portion 43 with screws, and a certain angle is formed between the screws of the T-block 42 and the nuts of the first screw 431, when lateral stress is generated to the left in the first screw hole, a force will be generated on the T-block 42, increasing the tightening pressure on the first locking surface 32, making the first locking block 3 more secure; the lateral stress on the left side is also applied to the second locking surface 41 at the same time, thereby generating a fixing force on the first insert 3 as a whole.

[0058] Finally, the second screw 432 is screwed into the second screw hole, and the lateral stress generated on the left side of the second screw hole is used to counteract the stress on the right side of the first screw hole. The lateral stress on the right side of the second screw hole counteracts the inclined surface of the third locking surface 45, so that the second locking block 4 forms a wedge-shaped stress structure, thereby increasing the stability of the first locking block 3 and ensuring the firm fixation of the fixed mold insert 2. The entire installation process makes full use of the mechanical relationship between the various components to ensure the safe and stable installation of the fixed mold insert 2.

[0059] The main functions of this utility model:

[0060] 1. Quick replacement insert structure: This structural design is intended to provide a convenient way for operators to quickly and easily replace the fixed mold insert 2 of the injection mold. Through the design of the fastening part, the first locking block 3 and the second locking block 4, the fast installation and removal of the fixed mold insert 2 is achieved.

[0061] 2. Simple and efficient operation process: When the fixed mold insert 2 needs to be replaced or maintained, the operation process is very simple and intuitive. First, loosen the screws of the fixing part 43 and remove it, then use a tool to insert the extraction hole 44 and lift up the second locking block 4 to complete the disassembly process. On the contrary, when reinstalling, just insert the replaced fixed mold insert 2 into the positioning hole 11, and then gradually fix the first locking block 3 and the second locking block 4 to complete the installation process.

[0062] 3. Save manpower and time costs: Compared with the traditional method of replacing inserts, the utility model greatly saves manpower and time costs. There is no need to disassemble the entire mold, and the fixed mold insert can be replaced by operating only a few key components, which can greatly improve production efficiency, reduce production line downtime, and reduce production costs.

[0063] 4. Improve production efficiency: The introduction of the fast-changing fixed mold insert structure makes the production process more flexible and efficient. In production, when it is necessary to frequently change product models or perform maintenance, the mold can be adjusted quickly and conveniently, thereby meeting market demand more quickly and improving production efficiency and capacity utilization.

[0064] In summary, after reading the utility model document, ordinary technicians in this field can make various other corresponding transformation schemes based on the technical scheme and technical concept of the utility model without creative mental labor, which all fall within the scope of protection of the utility model.

Claims

1. A quick-change insert structure for an injection mold, characterized in that: It includes a fixed mold insert and a first locking block, the fixed mold insert is provided with an inclined fastening part, the fastening part is provided with a fastening surface and a tilting surface; the first locking block is provided with an inclined fastening end, the lower part of the fastening end contacts the inclined surface of the fastening surface, and the upper part of the fastening end contacts the reverse inclined surface of the tilting surface.

2. The quick-change insert structure for injection mold according to claim 1, characterized in that: The other end of the fastening end of the first locking block is provided with a first locking surface.

3. The quick-change insert structure for injection mold according to claim 2, characterized in that: It also includes a second locking block, the second locking block is provided with a second locking surface, and the second locking surface is connected to the first locking surface.

4. The quick-change insert structure for injection mold according to claim 3, characterized in that: The first locking block is provided with a T-slot, and the second locking block is provided with a T-block, and the T-block is detachably connected to the T-slot.

5. The quick-change insert structure for injection mold according to claim 3, characterized in that: The first locking block is provided with a lifting hole, and the second locking block is provided with a pulling hole.

6. The quick-change insert structure for injection mold according to claim 4, characterized in that: It also includes a fixing mechanism, and the T block is connected to the second locking block through the fixing mechanism.

7. The quick-change insert structure for injection mold according to claim 6, characterized in that: The fixing mechanism is a screw or a bolt.

8. The quick-change insert structure for injection mold according to claim 3, characterized in that: A fixing portion is provided at the bottom of the second locking block, and the fixing portion is provided on one side of the T block.

9. The quick-change insert structure for injection mold according to claim 1, characterized in that: It also includes a fixed mold plate, the fixed mold insert is arranged on the fixed mold plate, and the fixed mold plate is provided with a positioning hole.

10. The quick-change insert structure for injection mold according to claim 9, characterized in that: A buffer portion is provided at the bottom of the positioning hole.

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