Die quick-changing structure of electric tool

Abstract

The utility model relates to the technical field of electric tools, in particular to a mold quick-changing structure of an electric tool, which comprises an upper mold assembly, a lower mold assembly and a lower mold assembly, the lower die assembly is composed of a lower main die and a replaceable lower auxiliary die in a cooperative mode. The two parts are combined for use, so that accurate matching is provided for different workpiece specifications, and the flexibility in module operation is ensured; the die holder assembly is composed of an upper die holder and a lower die holder and used for wrapping the upper die assembly and the lower die assembly, so that the stability between the upper die assembly and the lower die assembly is improved; the locking assembly comprises a first rack, a second rack, a gear and a reset spring. Compared with the prior art, the mold system has the advantages that by adopting the design of the replaceable upper auxiliary mold and the replaceable lower auxiliary mold, the same set of mold system can be compatible with various battery pack specifications, the number of molds needing to be independently designed and manufactured is greatly reduced, the production cost is remarkably reduced, the mold preparation period is shortened, and the production efficiency is improved. And the production efficiency and the market response speed are improved.

Description

Technical Field

[0001] The present application relates to the technical field of electric tools, and in particular to a mold quick-change structure of an electric tool. Background Art

[0002] With the diversified development of the power tool market, different brands and models of power tools have different requirements for battery packs. The size, shape, interface and other specifications of battery packs are not the same. Traditional power tool shell production, especially the battery pack mounting shell, mostly uses integrated injection molds to form, which means that each power tool or each battery pack specification needs to be customized with a set of exclusive molds. This method not only increases the design and manufacturing costs of the mold, but also prolongs the product development cycle and reduces the market response speed.

[0003] The limitation of integrated molds is that they lack flexibility and compatibility. Once the battery pack supplier or design changes, the entire set of molds needs to be redesigned and made, which is undoubtedly a significant cost burden for manufacturers. In addition, inventory management has become more complicated. Too many mold types increase the demand for storage space and management difficulties.

[0004] In this regard, the present application proposes a mold quick-change structure for an electric tool to solve the problem. Summary of the invention

[0005] The purpose of this application is to solve at least one of the technical deficiencies.

[0006] To this end, one purpose of the present application is to propose a mold quick-change structure for an electric tool to solve the problems mentioned in the background technology and overcome the deficiencies in the prior art.

[0007] In order to achieve the above-mentioned objectives, an embodiment of the present application provides a mold quick-change structure for an electric tool, including: an upper mold assembly, which is collaboratively composed of an upper main mold and a replaceable upper sub-mold; a lower mold assembly, which is collaboratively composed of a lower main mold and a replaceable lower sub-mold; the two are used in combination to provide precise matching for different workpiece specifications, ensuring flexibility in mold operation; a mold base assembly, which is composed of an upper mold base and a lower mold base, and is used to wrap the upper mold assembly and the lower mold assembly to improve the stability between the upper mold assembly and the lower mold assembly; a locking assembly, including a first rack, a second rack, a gear and a reset spring, wherein a locking block is fixedly provided at one end of the first rack, and through mechanical interaction, seamless and rapid locking and release of the upper mold assembly, the lower mold assembly and the mold base assembly are achieved.

[0008] Preferably, any of the above schemes has two side surfaces of the upper main mold provided with a first locking groove for cooperating with a locking block to lock the upper main mold with the upper mold base; and a first positioning groove is provided at the intersection of the bottom edge and the side of the upper main mold.

[0009] Preferably, any of the above schemes has second locking grooves on two side surfaces of the upper sub-mold for cooperating with a locking block to lock the upper sub-mold and the upper mold base; a second positioning groove is provided at the intersection of the bottom edge and the side of the upper sub-mold.

[0010] Preferably, any of the above schemes is that third locking grooves are provided on both side surfaces of the lower main mold for cooperating with locking blocks to achieve locking of the lower main mold and the lower mold base; a first positioning block is fixedly provided on the top of the lower main mold for cooperating with the first positioning groove to achieve rapid alignment between the lower main mold and the upper main mold.

[0011] Preferably, any of the above schemes is that both side surfaces of the lower sub-mold are provided with fourth locking grooves for cooperating with locking blocks to achieve locking of the lower sub-mold and the lower mold base; a second positioning block is fixedly provided on the top of the lower main mold to cooperate with the second positioning groove to achieve rapid alignment between the lower sub-mold and the upper sub-mold.

[0012] Preferably, any of the above schemes has mounting grooves on both sides of the upper die base and the lower die base, a slide groove is provided at one end, and a limit groove for sliding of the locking block is provided at the other end, and a straight groove is provided at one end of the slide groove.

[0013] Preferably, any of the above schemes has one end of the return spring mounted on the side wall of the mounting groove, and the other end mounted on one end of the second rack; the first rack is meshed with the gear, and the second rack is meshed with the gear.

[0014] Preferably, any of the above schemes is that a positioning rod is rotatably provided at the axis of the gear, and the positioning rod is installed inside the connecting groove.

[0015] Preferably, any of the above schemes is that a guide groove is provided on the second rack, a support block is slidably arranged inside the guide groove, the support block is installed inside the connecting groove, and an operating rod is installed at the end of the second rack opposite to the tooth, and the operating rod is slidably arranged inside the slide groove.

[0016] Compared with the prior art, the advantages and beneficial effects of this application are:

[0017] 1); In the present application, by adopting a replaceable upper sub-mold and lower sub-mold design, the same set of mold system can be compatible with a variety of battery pack specifications, which greatly reduces the number of molds that need to be designed and manufactured separately, significantly reduces production costs, shortens mold preparation cycle, and improves production efficiency and market response speed.

[0018] 2); In the face of the diversification of battery pack specifications, there is no need to completely replace the entire mold. Only the corresponding upper and lower molds need to be replaced to adapt to the new battery pack size and shape, which enhances the flexibility and adaptability of the production line.

[0019] 3); The precisely designed first to fourth locking grooves, positioning grooves, positioning blocks, etc. ensure the precise positioning and stable locking between mold components, avoid dimensional deviations caused by mold replacement, and maintain the consistency and high quality standards of product manufacturing.

[0020] 4) The design of the locking component makes the mold replacement operation simple and quick, reduces the time and difficulty of manual operation, reduces the error rate of operation, and improves the safety of operation.

[0021] 5); Modular mold design simplifies mold inventory management, reduces storage space requirements, facilitates classified storage and quick retrieval of mold components, and improves the efficiency of production organization.

[0022] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 It is a three-dimensional schematic diagram according to an embodiment of the present application;

[0025] Figure 2 It is a partial cross-sectional schematic diagram of an upper mold base according to an embodiment of the present application;

[0026] Figure 3 A schematic diagram of an upper mold base according to an embodiment of the present application;

[0027] Figure 4 A schematic diagram of a lower mold base according to an embodiment of the present application;

[0028] Figure 5 It is a schematic diagram of the combination of the upper mold assembly and the lower mold assembly according to an embodiment of the present application;

[0029] Figure 6 A schematic diagram of an upper mold assembly according to an embodiment of the present application;

[0030] Figure 7 This is a schematic diagram of a lower mold assembly according to an embodiment of the present application;

[0031] Figure 8 Schematic diagram of a locking assembly according to an embodiment of the present application.

[0032] In the figure: 1. Upper mold assembly, 101. Upper main mold, 102. Upper auxiliary mold. 103. First locking groove, 104. Second locking groove, 2. Lower mold assembly, 201. Lower main mold, 202. Lower auxiliary mold, 203. Third locking groove, 204. First positioning block, 205. Fourth locking groove, 206. Second positioning block, 3. Mold base assembly, 301. Upper mold base, 302. Lower mold base, 4. Locking assembly, 401. First rack, 402. Second rack, 403. Gear, 404. Return spring, 405. Locking block, 406. Positioning rod, 407. Support block, 408. Operating rod. DETAILED DESCRIPTION

[0033] like Figures 1 to 8 As shown, a mold quick-change structure of an electric tool includes an upper mold assembly 1, a lower mold assembly 2, a mold base assembly 3 and a locking assembly 4.

[0034] Further, such as Figures 4 to 5 As shown, the upper mold assembly 1 is cooperatively composed of an upper main mold 101 and a replaceable upper sub-mold 102, two side surfaces of the upper main mold 101 are provided with a first locking groove 103, a first positioning groove is provided at the intersection of the bottom edge and the side of the upper main mold 101, two side surfaces of the upper sub-mold 102 are provided with a second locking groove 104, and a second positioning groove is provided at the intersection of the bottom edge and the side of the upper sub-mold 102.

[0035] Further, such as Figure 6 As shown, the lower mold assembly 2 is cooperatively composed of a lower main mold 201 and a replaceable lower sub-mold 202, and the two side surfaces of the lower main mold 201 are provided with a third locking groove 203, and the top of the lower main mold 201 is fixedly provided with a first positioning block 204 to cooperate with the first positioning groove to achieve rapid alignment between the lower main mold 201 and the upper main mold 101, and the two side surfaces of the lower sub-mold 202 are provided with a fourth locking groove 205, and the top of the lower main mold 201 is fixedly provided with a second positioning block 206 to cooperate with the second positioning groove to achieve rapid alignment between the lower sub-mold 202 and the upper sub-mold 102.

[0036] Specifically, the upper mold assembly 1 and the lower mold assembly 2 are used in combination to provide precise matching for different workpiece specifications, ensuring flexibility in mold operation.

[0037] Further, such as Figures 1 to 4 As shown, the mold base assembly 3 is composed of an upper mold base 301 and a lower mold base 302. Both sides of the upper mold base 301 and the lower mold base 302 are provided with installation grooves, one end of which is provided with a sliding groove, and the other end is provided with a limiting groove for the sliding of the locking block 405. A straight groove is provided at one end of the sliding groove, and a penetrating injection hole is provided on the top of the upper mold base 301, which is connected with the injection hole on the upper main mold 101.

[0038] Specifically, the upper mold base 301 and the lower mold base 302 wrap the upper mold assembly 1 and the lower mold assembly 2 to ensure that the upper mold assembly 1 and the lower mold assembly 2 are more stable during the injection molding operation, thereby improving the injection molding effect.

[0039] Further, such as Figure 8 As shown, the locking assembly 4 includes a first rack 401, a second rack 402, a gear 403 and a return spring 404, wherein a locking block 405 is fixedly provided at one end of the first rack 401, one end of the return spring 404 is mounted on the side wall of the mounting groove, and the other end is mounted on one end of the second rack 402; the first rack 401 and the gear 403 are meshed with each other, the second rack 402 and the gear 403 are meshed with each other, a positioning rod 406 is rotatably provided at the axis of the gear 403, the positioning rod 406 is installed inside the connecting groove, a guide groove is provided on the second rack 402, a support block 407 is slidably provided inside the guide groove, the support block 407 is installed inside the connecting groove, an operating rod 408 is installed at the end of the second rack 402 opposite to the tooth, the operating rod 408 is slidably provided inside the slide groove, and through mechanical interaction, the upper mold assembly 1 and the lower mold assembly 2 are seamlessly and quickly locked and released on the mold base.

[0040] The support block 407 supports and limits the second rack 402 so that the movement trajectory of the second rack 402 is maintained in a horizontal straight line.

[0041] Locking assembly 4, total of four groups ( Figure 8 In the state of being a group), they are respectively installed in the four installation grooves opened in the upper mold base 301 and the lower mold base 4. In each group, the number of first racks 401 is two, the number of gears 403 is two, and the number of locking blocks 405 is two.

[0042] A mold quick-change structure for an electric tool, the working principle is as follows:

[0043] The upper mold assembly 1 and the upper mold base 301 are installed. The upper main mold 101 is placed in the mold groove of the upper mold base 301, and the upper main mold 101 is pressed downward. When the upper main mold 101 contacts the locking block 405, the locking block 405 is forced to move, driving the first rack 401 to move, and the first rack 401 drives the gear 403 meshing therewith to rotate. The rotation of the gear 403 drives the second rack 402 to move, driving the synchronous extrusion of the return spring 404 of the operating rod 408;

[0044] When the upper main mold 101 is completely accommodated in the mold groove of the upper mold base 301, the positions of the first locking grooves 103 on both sides of the upper main mold 101 correspond to the positions of the limit grooves, and the locking block 405 is no longer subjected to force. Under the action of the return spring 404, the second rack 402 is pushed to move, and the second rack 402 drives the gear 403 to rotate, thereby driving the first rack 401 and the locking block 405 to move, so that the locking block 405 is inserted into the first locking groove 103;

[0045] The upper sub-die 102 is placed in the die groove of the upper die seat 301, and the upper sub-die 102 is pressed downward. When the upper sub-die 102 contacts the locking block 405, the locking block 405 is forced to move, driving the first rack 401 to move, and the first rack 401 drives the gear 403 meshing therewith to rotate. The rotation of the gear 403 drives the second rack 402 to move, driving the operating rod 408 to synchronously squeeze the return spring 404;

[0046] When the upper sub-die 102 is completely accommodated in the die groove of the upper die seat 301, the positions of the second locking grooves 104 on both sides of the upper sub-die 102 correspond to the positions of the limit grooves, and the locking block 405 is no longer subjected to force. Under the action of the return spring 404, the second rack 402 is pushed to move, and the second rack 402 drives the gear 403 to rotate, thereby driving the first rack 401 and the locking block 405 to move, so that the locking block 405 is inserted into the first locking groove 103;

[0047] The installation of the lower mold assembly 2 and the lower mold base 302 is the same as above, the difference is that the lower main mold 201 and the lower auxiliary mold 202 are placed in the mold groove of the lower mold base 302, and the corresponding grooves are the third locking groove 203 and the fourth locking groove 205;

[0048] When it is necessary to replace a different script (i.e., the shape or specification of the product corresponding to the upper sub-mold 102 and the lower sub-mold 202 changes), the upper mold base 301 is separated from the lower mold base 302, and the operating rod 408 is pulled. The operating rod 408 drives the second rack 402 to move, and the second rack 402 drives the gear 403 to rotate, thereby driving the first rack 401 and the locking block 405 to move, so that the locking block 405 is disengaged from the corresponding locking groove, and then the upper sub-mold 102 and the lower sub-mold 202 that need to be replaced are removed, and the new upper sub-mold 102 and the lower sub-mold 202 are reinstalled.

Claims

1. A mold quick-change structure for an electric tool, characterized in that: include: The upper mold assembly is composed of an upper main mold and a replaceable upper auxiliary mold; A lower mold assembly, which is cooperatively composed of a lower main mold and a replaceable lower auxiliary mold; The combination of the two provides precise matching for different workpiece specifications, ensuring flexibility in module operations; The die base assembly is composed of an upper die base and a lower die base, and is used to wrap the upper die assembly and the lower die assembly to improve the stability between the upper die assembly and the lower die assembly; The locking assembly includes a first rack, a second rack, a gear and a return spring, wherein a locking block is fixedly provided at one end of the first rack, and seamless and rapid locking and releasing of the upper mold assembly, the lower mold assembly and the mold base assembly are achieved through mechanical interaction.

2. The mold quick-change structure of an electric tool according to claim 1, characterized in that: The upper main mold has two side surfaces each provided with a first locking groove for cooperating with a locking block to achieve locking of the upper main mold and the upper mold base; A first positioning groove is provided at the intersection of the bottom edge and the side edge of the upper main mold.

3. The mold quick-change structure of an electric tool according to claim 1, characterized in that: The upper auxiliary mold is provided with a second locking groove on two side surfaces thereof, which is used to cooperate with the locking block to achieve locking of the upper auxiliary mold and the upper mold base; A second positioning groove is provided at the intersection of the bottom edge and the side edge of the upper secondary mold.

4. The mold quick-change structure of an electric tool according to claim 2, characterized in that: The two sides of the lower main mold are provided with third locking grooves for cooperating with the locking block to achieve locking of the lower main mold and the lower mold base; A first positioning block is fixedly provided on the top of the lower main mold to cooperate with the first positioning groove to achieve rapid alignment between the lower main mold and the upper main mold.

5. The mold quick-change structure of an electric tool according to claim 3, characterized in that: The two sides of the lower auxiliary mold are provided with fourth locking grooves for cooperating with the locking block to achieve locking of the lower auxiliary mold and the lower mold base; A second positioning block is fixedly provided on the top of the lower main mold to cooperate with the second positioning groove to achieve rapid alignment between the lower auxiliary mold and the upper auxiliary mold.

6. The mold quick-change structure of an electric tool according to claim 1, characterized in that: Both sides of the upper die base and the lower die base are provided with mounting grooves, one end of which is provided with a sliding groove, and the other end is provided with a limiting groove for sliding of the locking block, and one end of the sliding groove is provided with a straight groove opening.

7. The mold quick-change structure of an electric tool according to claim 6, characterized in that: One end of the return spring is mounted on the side wall of the mounting groove, and the other end is mounted on one end of the second rack; The first rack is meshed with the gear, and the second rack is meshed with the gear.

8. The mold quick-change structure of an electric tool according to claim 7, characterized in that: A positioning rod is rotatably arranged at the axis center of the gear, and the positioning rod is installed inside the connecting groove.

9. The mold quick-change structure of an electric tool according to claim 8, characterized in that: A guide groove is provided on the second rack, a support block is slidably arranged inside the guide groove, the support block is installed inside the connecting groove, an operating rod is installed at the end of the second rack opposite to the teeth, and the operating rod is slidably arranged inside the slide groove.

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