A synchronous crimping device applied to two terminals

Abstract

This utility model discloses a synchronous crimping device for terminals at both ends, including a base and a crimping module. The crimping module includes a pressure-applying device, an upper die head, and a lower die base. The upper die head includes two die pieces arranged side by side, each die piece fixed to a corresponding mounting base. The mounting base is located at the lower pressing end of the pressure-applying device, and an elastic balancing pad is provided between the mounting base and the lower pressing end to balance the crimping force when the die pieces are pressed against the lower die base. In this utility model, the upper die head, including two die pieces arranged side by side, can simultaneously crimp two terminals at the same end of the wiring harness, improving crimping efficiency; and the elastic balancing pad provided between the mounting base and the lower pressing end can balance the crimping force when the die pieces are pressed against the lower die base, improving crimping quality.

Description

Technical Field

[0001] This application relates to the field of wire processing technology, specifically to a synchronous crimping device for terminals at both ends. Background Technology

[0002] In the field of electrical connections, terminal crimping at the ends of power cords is a key process for achieving power transmission. Currently, traditional power cord terminal crimping methods mainly employ manual labor or single-station equipment, requiring each terminal to be crimped individually. This method suffers from low crimping efficiency, high labor costs, and long production cycles when facing mass production demands, making it difficult to meet the requirements of modern industrial rapid manufacturing.

[0003] To address the aforementioned issues, existing technologies disclose multi-terminal synchronous crimping molds that integrate multiple crimping interfaces to simultaneously crimp multiple terminals, effectively improving production efficiency. For example, Chinese utility model patent CN 219419820 U, entitled "A Device for Automatically Positioning Wire Crimping Terminals," discloses a crimping groove with multiple slots arranged side-by-side, capable of crimping multiple terminals simultaneously. However, in such molds, the multiple crimping interfaces are typically rigidly connected to the same pressure-applying device. Due to factors such as manufacturing tolerances of each terminal, crimping position deviations, and differences in the diameter of the power lines being crimped, it is difficult to ensure that each terminal receives precise and consistent pressure during the crimping process. This leads to some terminals being crimped weakly due to insufficient pressure, resulting in poor contact and loose connections; while other terminals are over-crimped due to excessive pressure, causing damage to the terminals or power lines, seriously affecting product quality and electrical performance stability. Utility Model Content

[0004] In view of the above problems, this application provides a synchronous crimping device for terminals at both ends, which solves the technical problem of uneven crimping when multiple terminals are crimped at the same time.

[0005] To achieve the above objectives, this application provides a synchronous crimping device for terminals at both ends, comprising:

[0006] Base;

[0007] A pressing module, disposed on the base, includes a pressing device, an upper die head, and a lower die base;

[0008] The upper mold head includes two mold pieces arranged side by side and two mounting bases arranged side by side. The bottom of the mold pieces is provided with a pressing groove. The lower mold base is fixedly arranged directly below the upper mold head and is provided with two pressing protrusions that cooperate with the pressing groove.

[0009] The mold pieces are fixed on their respective mounting bases. The mounting bases are located at the lower pressure end of the pressure-applying device, and an elastic equalizing pad is provided between the mounting base and the lower pressure end to equalize the pressing force when each mold piece is pressed against the lower mold base.

[0010] Furthermore, the lower pressure end of the pressure-applying device is provided with an L-shaped connecting plate; the connecting plate includes a horizontally arranged end plate and a side plate vertically arranged at the rear edge of the end plate; the side plate is provided with a vertical sliding groove, the mounting base is slidably arranged on the sliding groove, and the equalizing pad is arranged on the top of the mounting base and abuts against the lower surface of the end plate.

[0011] Furthermore, a wire harness limiting block is provided behind the lower mold base. The wire harness limiting block is used to abut against the end of the wire harness to be crimped to limit the position of the wire harness.

[0012] Furthermore, the wire harness limiting block has an L-shaped block structure.

[0013] Furthermore, the template includes two or more layers of first steel sheets, which are stacked along the thickness direction, making the thickness of the template adjustable;

[0014] The lower mold base includes two or more layers of second steel sheets, which are stacked along the thickness direction, making the thickness of the lower mold base adjustable.

[0015] Furthermore, the mold plate and the lower mold base are detachable.

[0016] Furthermore, the pressure-applying device includes a hydraulic cylinder, and the outer side of the pressure-applying device is fixedly mounted on the top of the base via a C-shaped seat.

[0017] Furthermore, the base of the module tapers inward from both sides towards the center, forming a tapered sheet structure that is narrower at the bottom and wider at the top.

[0018] Unlike existing technologies, the above-mentioned technical solution, applied to a synchronous crimping device for terminals at both ends, includes a base and a crimping module. The crimping module includes a pressure-applying device, an upper die head, and a lower die base. The upper die head includes two side-by-side die plates, each fixed to a corresponding mounting base. The mounting base is located at the lower pressing end of the pressure-applying device, and an elastic balancing pad is provided between the mounting base and the lower pressing end to balance the crimping force when each die plate is pressed against the lower die base. In this technical solution, the upper die head, with its two side-by-side die plates, can simultaneously crimp two terminals at the same end of the wiring harness, improving crimping efficiency. Furthermore, the elastic balancing pad between the mounting base and the lower pressing end balances the crimping force when each die plate is pressed against the lower die base, preventing some terminals from being over-crimped while others are under-crimped, thereby improving crimping quality.

[0019] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0020] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this application and other related content, and should not be considered as limitations on this application.

[0021] In the accompanying drawings of the instruction manual:

[0022] Figure 1 This is a schematic diagram of the synchronous crimping device applied to both ends of the device as described in the specific embodiment;

[0023] Figure 2 This is a schematic diagram of the wire harness with crimped terminals as described in a specific embodiment;

[0024] Figure 3 for Figure 1 A magnified view of part A in the middle;

[0025] Figure 4 This is an exploded view of the crimping module described in the specific embodiment;

[0026] The reference numerals used in the above figures are explained as follows:

[0027] 1. Base; 11. Mounting slot; 2. Crimping module; 100. Wire harness; 101. Wire harness body; 102. Terminal;

[0028] 21. Pressure applying device; 22. Upper die head; 23. Lower die base; 24. Wire harness limiting block; 25. C-shaped seat;

[0029] 211. Connecting plate; 2111. End plate; 2112. Side plate; 2113. Slide groove; 212. Equalizing gasket; 221. Mold plate; 231. Press-fitting protrusion; 222. Mounting base; Detailed Implementation

[0030] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0031] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0032] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0033] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0034] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0035] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0036] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0037] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0038] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0039] Please see Figures 1 to 4 This embodiment provides a synchronous crimping device for terminals at both ends. This synchronous crimping device for terminals at both ends can be used to simultaneously crimp two terminals 102 at the ends of the wiring harness, improving the terminal crimping efficiency. Furthermore, during the terminal crimping process, it can balance the downward pressure on each terminal, avoiding excessive pressure on some terminals 102 while insufficient pressure on others, thus improving the terminal crimping quality.

[0040] like Figure 1 As shown, in this embodiment, the synchronous crimping device applied to both ends of the terminals includes a base 1 and a crimping module 2. The base 1 can be made of steel, aluminum, aluminum alloy, etc. The crimping module 2 is mounted on the base 1 via a bracket.

[0041] The crimping module 2 includes a pressure applying device 21, an upper die head 22, and a lower die base 23. For example... Figure 1 and Figure 3 As shown, the upper mold head 22 includes two mold pieces 221 arranged side by side and two mounting bases 222 arranged side by side. The bottom of the mold piece 221 is provided with a pressing groove. The lower mold base 23 is fixedly arranged directly below the upper mold head 22 and is provided with two pressing protrusions 231 that cooperate with the pressing groove.

[0042] like Figure 4As shown, the mold pieces 221 are respectively fixed on the corresponding mounting bases 222. The mounting bases 222 are located at the lower pressure end of the pressure applying device 21, and an elastic equalizing pad 212 is provided between the mounting base 222 and the lower pressure end to equalize the pressing force when each mold piece 221 is pressed against the lower mold base 23. The material of the equalizing pad 212 can be any one of EPDM rubber, nitrile rubber, or natural rubber, and the thickness of the equalizing pad 212 is between 0.5 cm and 0.8 cm.

[0043] The pressing groove on the upper die head 22 and the pressing protrusion 231 on the lower die base 23 are paired one-to-one. For example... Figure 2 As shown, during terminal crimping, the insulation layer at the end of the wire harness body 101 is first stripped, and the terminal 102 is fitted onto the end of the wire harness body 101. Then, it extends between the crimping groove and the crimping protrusion 231. Next, the pressure applying device 21 drives the mold 221 to press down, causing the terminal 102 to deform under the pressure of the crimping groove and the crimping protrusion 231, and tightly crimping it to the end of the wire harness, connecting it to the metal wire inside the wire harness. Figure 2 The diagram shown is a schematic of the wire harness 100 with crimped terminals 102 in this embodiment. In this embodiment, the pressure-applying device 21 is a hydraulic cylinder, whose outer side is fixedly mounted above the base 1 via a C-shaped seat 25. Figure 3 As shown, the base of the template 221 tapers inward from both sides towards the center, forming a tapered sheet structure that is narrower at the bottom and wider at the top. That is, the width of the two sides of the bottom of the template 221 gradually decreases, which can prevent the bottom of the template 221 from interfering with other surrounding structures when pressed down.

[0044] like Figure 4 As shown, the lower pressure end of the pressure-applying device 21 is provided with an L-shaped connecting plate 211; the connecting plate 211 includes a horizontally arranged end plate 2111 and a side plate 2112 vertically arranged on the rear edge of the end plate 2111; the side plate 2112 is provided with a vertical sliding groove 2113, the mounting base 222 is slidably arranged on the sliding groove 2113, and the equalizing pad 212 is arranged on the top of the mounting base 222 and abuts against the lower surface of the end plate 2111.

[0045] In this embodiment, the L-shaped connecting plate 211 can be made of components with a certain structural strength, such as steel or aluminum alloy. The template 221 is fixed to the front of the mounting base 222, and the back of the mounting base 222 abuts against the side plate 2112 and is slidably connected to the sliding groove 2113 on the side plate 2112. A waist-shaped hole along the vertical direction can be provided on the back of the mounting base 222. The waist-shaped hole is connected to the side plate 2112 by bolts, so that the mounting base 222 can slide a short distance on the sliding groove 2113 without detaching from the side plate 2112.

[0046] The downward pressure of the pressure-applying device 21 is transmitted to the mold plate 221 in sequence through the L-shaped connecting plate 211, the equalizing pad 212, and the mounting base 222. The mold plate 221 is fixed on the mounting base 222, and the mounting base 222 is slidably connected to the sliding groove 2113 on the side plate 2112 of the connecting plate 211. Therefore, during the downward pressure process, the two equalizing pads 212 will elastically contract due to the force they are subjected to. The greater the force, the greater the contraction. Thus, the downward pressure of the two mold plates 221 can be balanced, reducing the pressure difference between the two terminals 102.

[0047] like Figure 1 As shown, in this embodiment, in order to control the depth of the end of the wire harness body 101 extending into the crimping groove so that the position of the terminal 102 can be aligned with the crimping protrusion 231, a wire harness limiting block 24 is provided behind the lower mold base 23. The wire harness limiting block 24 is used to abut against the end of the wire harness to be crimped to limit the position of the wire harness.

[0048] In this embodiment, the wire harness limiting block 24 is an L-shaped block structure. The front end of the wire harness limiting block 24 is a vertical plate, used to abut against the part of the wire harness body 101, and the rear end of the wire harness limiting block 24 is a horizontal plate, used to fix the wire harness limiting block 24 to the base 1. Figure 1 As shown, an installation groove 11 is provided on the base 1 for installing the lower mold base 23, and the wire harness limiting block 24 is located behind the lower mold base 23.

[0049] like Figure 1 and Figure 3 As shown, the template 221 comprises two or more layers of first steel sheets, each of which has a groove of the same shape at the same position. The first steel sheets are stacked along the thickness direction, making the thickness of the template 221 adjustable. After the first steel sheets are stacked, the grooves overlap along the thickness direction to form the pressing groove.

[0050] Similarly, the lower mold base 23 includes two or more layers of second steel sheets, each with an upward-facing protrusion at the same position. The second steel sheets are stacked along the thickness direction, making the thickness of the lower mold base 23 adjustable. After the second steel sheets are stacked, the protrusions overlap along the thickness direction to form the pressing protrusion 231.

[0051] In this embodiment, both the mold plate 221 and the lower mold base 23 are multi-layer stacked structures. Therefore, the thickness of the mold plate 221 and the lower mold base 23 can be increased or decreased according to the needs of terminals 102 of different sizes, thereby reducing the number of molds developed and the cost.

[0052] In this embodiment, the mold plate 221 and the lower mold base 23 are detachable. Both the mold plate 221 and the lower mold base 23 are provided with mounting holes and can be installed by bolts, thus facilitating the replacement of different models of mold plates 221 and lower mold bases 23.

[0053] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A synchronous crimping device for terminals at both ends, characterized in that, include: Base; A pressing module, disposed on the base, includes a pressing device, an upper die head, and a lower die base; The upper mold head includes two mold pieces arranged side by side and two mounting bases arranged side by side. The bottom of the mold pieces is provided with a pressing groove. The lower mold base is fixedly arranged directly below the upper mold head and is provided with two pressing protrusions that cooperate with the pressing groove. The mold pieces are fixed on their respective mounting bases. The mounting bases are located at the lower pressure end of the pressure-applying device, and an elastic equalizing pad is provided between the mounting base and the lower pressure end to equalize the pressing force when each mold piece is pressed against the lower mold base.

2. The synchronous crimping device for two-end terminals according to claim 1, characterized in that, The pressure-applying device has an L-shaped connecting plate at its lower end; the connecting plate includes a horizontally arranged end plate and a side plate vertically arranged at the rear edge of the end plate; the side plate has a vertical sliding groove, the mounting base is slidably arranged on the sliding groove, and the equalizing pad is arranged on the top of the mounting base and abuts against the lower surface of the end plate.

3. The synchronous crimping device for two-end terminals according to claim 1, characterized in that, A wire harness limiting block is provided behind the lower mold base. The wire harness limiting block is used to abut against the end of the wire harness to be crimped to limit the position of the wire harness.

4. The synchronous crimping device for two-end terminals according to claim 3, characterized in that, The wire harness limiting block has an L-shaped block structure.

5. The synchronous crimping device for two-end terminals according to claim 1, characterized in that, The template includes two or more layers of first steel sheets, which are stacked along the thickness direction, so that the thickness of the template is adjustable. The lower mold base includes two or more layers of second steel sheets, which are stacked along the thickness direction, making the thickness of the lower mold base adjustable.

6. The synchronous crimping device for two-end terminals according to claim 1, characterized in that, The mold plate and the lower mold base are detachable.

7. The synchronous crimping device for two-end terminals according to claim 1, characterized in that, The pressure-applying device includes a hydraulic cylinder, and the outer side of the pressure-applying device is fixedly mounted on the top of the base via a C-shaped seat.

8. The synchronous crimping device for two-end terminals according to claim 1, characterized in that, The base of the module tapers inward from both sides towards the center, forming a tapered sheet structure that is narrower at the bottom and wider at the top.

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