Binding post strip injection mold

Abstract

The utility model relates to the technical field of mold processing, and discloses a wiring terminal strip injection mold which comprises an upper-layer mold, a lower-layer mold and a lower-layer mold, the upper-layer mold comprises an upper-layer mold body, injection molding holes are formed in the upper-layer mold body, and a plurality of fixed connecting arms are fixedly mounted on the upper-layer mold body; the middle-layer mold comprises two symmetrically-arranged middle-layer mold bodies, and the middle-layer mold bodies are connected with movable connecting arms in a sliding mode; the lower-layer mold comprises a lower-layer mold body, and a plurality of fixed connecting arms are fixedly mounted on the lower-layer mold body; and the opening and closing mechanism is used for controlling mold closing and mold opening of the upper-layer mold, the middle-layer mold and the lower-layer mold. The upper-layer mold, the middle-layer mold and the lower-layer mold are arranged and can move in the longitudinal direction, and the two middle-layer mold bodies in the middle-layer mold can move in the horizontal direction, so that injection molding can be performed on the wiring terminal strip with a more complex structure, diversification of the wiring terminal strip is realized, and the difficulty of an injection molding process is reduced.

Description

Technical Field

[0001] This utility model relates to the field of mold processing technology, specifically, it is a terminal block injection mold. Background Technology

[0002] Terminal blocks (also known as terminal strips) are commonly used accessories in electrical connections, used to connect cables or wires and provide electrical connections for equipment. Injection molding of terminal blocks is a process for manufacturing electrical connection components. It involves heating plastic material at high temperature and injecting it into a mold, then cooling and solidifying to obtain the outer shell. This process results in high precision, mass production capability, and good electrical performance.

[0003] With the increasing complexity of electrical equipment and the widespread development of industrial applications, the functional and aesthetic requirements of terminal blocks have become increasingly diverse. Initially, terminal blocks existed primarily in simple, standardized forms, meeting basic electrical connection needs. However, as electrical control systems have become increasingly complex, the connection methods of electrical equipment have also evolved. To meet the requirements of different equipment and systems, terminal blocks have gradually emerged in various styles and specifications. However, for injection molding processes, the complex structure of terminal blocks significantly increases the manufacturing difficulty and makes it difficult to achieve one-piece injection molding; while segmented injection molding and reassembly require additional manpower and corresponding cost investment. Utility Model Content

[0004] The purpose of this utility model is to provide an injection mold for terminal blocks, which solves the problem that existing molds are difficult to use for the one-piece injection molding of complex terminal blocks.

[0005] This utility model is achieved through the following technical solution: a terminal block injection mold, comprising:

[0006] The upper mold is used for forming the top of the terminal block, including an upper mold body, an injection hole on the upper mold body, and multiple fixed connecting arms fixedly installed on the upper mold body;

[0007] A middle layer mold is used for forming the middle part of a terminal block. It includes two symmetrically arranged middle layer mold bodies, and a movable connecting arm is slidably connected to the middle layer mold body. The upper and lower end faces of the middle layer mold body are provided with chamfered bevels.

[0008] The lower mold is used for forming the bottom of the terminal block, and includes a lower mold body, on which multiple fixed connecting arms are fixedly installed; the upper mold body and the lower mold body are provided with inclined surfaces that are adapted to the inclined surfaces of the middle mold body;

[0009] The opening and closing mechanism is used to control the closing and opening of the upper mold, middle mold and lower mold. It includes a control unit and a drive unit. The control unit includes multiple guide screws. The fixed connecting arm and the movable connecting arm are connected to the guide screws by a kit.

[0010] The base is used to hold the mold and the opening and closing mechanism.

[0011] To better realize this utility model, the guide screw further includes a first screw and a second screw, wherein the pitch of the first screw is twice the pitch of the second screw; the kit is a smooth shaft sleeve or a threaded shaft sleeve, and smooth shaft sleeves are installed on all fixed connecting arms provided on the lower mold body; smooth shaft sleeves are installed on some fixed connecting arms provided on the upper mold body, and threaded shaft sleeves are installed on others; smooth shaft sleeves are installed on some movable connecting arms provided on the middle mold body, and threaded shaft sleeves are installed on others, and the kits on the upper mold and the middle mold are different on the same guide screw; the threaded shaft sleeve on the movable connecting arm cooperates with the second screw, and the threaded shaft sleeve on the fixed connecting arm cooperates with the first screw.

[0012] To better realize this utility model, further, there are four fixed connecting arms installed on the lower mold body and four movable connecting arms installed on the middle mold body. There are two first screws and two second screws, and the two first screws and the two second screws are diagonally arranged.

[0013] To better realize this utility model, a spring is further provided between the middle mold body and the movable connecting arm.

[0014] To better realize this utility model, the drive unit further includes a drive motor and a belt assembly, the belt assembly being sequentially sleeved on multiple guide screws, and finally the belt assembly being connected to the output end of the drive motor.

[0015] To better realize this utility model, the control unit further includes a reinforcing frame, and multiple guide screws are rotatably connected to the reinforcing frame.

[0016] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0017] (1) By setting up an upper mold, a middle mold and a lower module, the present invention allows the three to move longitudinally, while the two middle mold bodies in the middle mold can move horizontally. Therefore, it can perform one-piece injection molding of terminal blocks with more complex structures, realize the diversification of terminal blocks and reduce the difficulty of injection molding process.

[0018] (2) By setting guide screws and kits, this utility model enables the single power to synchronously control the middle and upper templates to move simultaneously, preventing the middle and upper templates from being rigidly collided and damaged. The structure is simple and does not require complex procedures for control. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 Cross-sectional view of the overall structure of this utility model Figure 1 .

[0021] Figure 3 Cross-sectional view of the overall structure of this utility model Figure 2 .

[0022] Figure 4 This is a schematic diagram of the mold in the open state.

[0023] Figure 5 This is a schematic diagram of the drive unit structure.

[0024] Figure 6 This is a schematic diagram of the terminal block structure.

[0025] Wherein: 11-Terminal block; 101-Base; 102-First screw; 103-Reinforcing frame; 104-Fixed connecting arm; 105-Upper mold body; 106-Lower mold body; 107-Middle mold body; 108-Optical shaft sleeve; 109-Threaded shaft sleeve; 110-Second screw; 111-Spring; 112-Modible connecting arm; 113-Belt assembly; 114-Drive motor. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Example 1:

[0029] This embodiment provides a terminal block injection mold, specifically as follows: Figures 1-4 , Figure 6 As shown, it includes:

[0030] The upper mold is used for forming the top of the terminal block 11, including the upper mold body 105, the upper mold body 105 is provided with injection holes, and multiple fixed connecting arms 104 are fixedly installed on the upper mold body 105.

[0031] A middle-layer mold, used for forming the middle part of the terminal block 11, includes two symmetrically arranged middle-layer mold bodies 107, on which a movable connecting arm 112 is slidably connected; the upper and lower end faces of the middle-layer mold body 107 are provided with chamfered slopes; the upper mold body 105 and the lower mold body 106 are provided with slopes that are adapted to the slopes of the middle-layer mold body 107;

[0032] The lower mold is used for forming the bottom of the terminal block 11, and includes a lower mold body 106, on which a plurality of fixed connecting arms 104 are fixedly installed;

[0033] The opening and closing mechanism is used to control the closing and opening of the upper mold, the middle mold and the lower mold. It includes a control unit and a drive unit. The control unit includes multiple guide screws. The fixed connecting arm 104 and the movable connecting arm 112 are both connected to the guide screws by a kit.

[0034] The base 101 is used to hold the mold and the opening and closing mechanism. The guide screw is rotatably connected to the base 101, and the lower mold body 106 is fixedly connected to the base 101.

[0035] It should be noted that the appearance of the terminal block 11 and the cavity inside the mold shown in the attached drawings are only general descriptions. Since these detailed features are not relevant to the substantive protection content of this case, they are omitted.

[0036] During production, the drive unit drives the guide screw to rotate. At this time, the guide screw drives the upper mold and the middle mold to move closer to the lower mold. The inclined surfaces on the upper mold body 105 and the middle mold body 107 begin to press against the inclined surface on the middle mold body 107, making the two middle mold bodies 107 stick together until the mold is closed. Then, molten material is poured in through the injection hole on the upper mold body 105. After injection molding is completed, the drive unit drives the guide screw to rotate in the opposite direction. At this time, the middle mold body 107 begins to move away from the lower mold body 106, and the upper mold body 105 begins to move away from the middle mold body 107. Since the middle mold body 107 is away from the upper mold body 105 and the lower mold body 106, its inclined surface is no longer compressed, and the two sticking middle mold bodies 107 can be easily separated. Then, the injection-molded terminal block 11 can be removed.

[0037] By setting up an upper mold, a middle mold, and a lower module, the three can move longitudinally, while the two middle mold bodies 107 in the middle mold can move horizontally. Therefore, it is possible to integrally mold the more complex terminal block 11, realize the diversification of the terminal block 11, and reduce the difficulty of the injection molding process.

[0038] Example 2:

[0039] This embodiment further extends the above embodiment, specifically as follows: Figures 1-4 As shown, the guide screw includes a first screw 102 and a second screw 110, the pitch of the first screw 102 being twice the pitch of the second screw 110; the kit is a smooth shaft sleeve 108 or a threaded shaft sleeve 109, and smooth shaft sleeves 108 are fixedly installed on all the fixed connecting arms 104 provided on the lower mold body 106; smooth shaft sleeves 108 are fixedly installed on some of the fixed connecting arms 104 provided on the upper mold body 105, and threaded shaft sleeves 109 are fixedly installed on the other part; the middle mold body 107 is provided with A light shaft sleeve 108 is fixedly installed on part of the movable connecting arm 112, and a threaded shaft sleeve 109 is fixedly installed on another part. On the same guide screw, the kit on the upper mold is different from the kit on the middle mold. The threaded shaft sleeve 109 on the movable connecting arm 112 cooperates with the second screw 110, and the threaded shaft sleeve 109 on the fixed connecting arm 104 cooperates with the first screw 102. The pitch of the two types of threaded shaft sleeves 109 are respectively adapted to the first screw 102 and the second screw 110. The drive unit drives multiple guide screws to rotate in the same direction and at the same speed.

[0040] When the first screw 102 and the second screw 110 rotate, since the lower mold body 106 is equipped with a smooth shaft sleeve 108, the rotation of the first screw 102 and the second screw 110 will not cause the lower mold body 106 to move, and the lower mold body 106 will always be fixed on the base 101. When the second screw 110 rotates, since the threaded bushing 109 on the movable connecting arm 112 cooperates with the second screw 110, the rotation of the second screw 110 will give the threaded bushing 109 a longitudinal movement force. However, since the movable connecting arm 112 is connected to the first screw 102 through the smooth shaft sleeve 108, the rotation of the first screw 102 will not drive the movable connecting arm 112. Similarly, the rotation of the first screw 102 can drive the fixed connecting arm 104 on the upper mold body 105, but the rotation of the second screw 110 cannot drive the fixed connecting arm 104 on the upper mold body 105. Since the pitch of the first screw 102 is twice that of the second screw 110, the moving distance of the upper mold body 105 is twice that of the middle mold body 107. That is, when the guide screw rotates, the middle mold body 107 will move away from the lower mold body 106, while the upper mold body 105 will move away from the middle mold body 107, achieving synchronous separation of the upper, middle and lower mold plates. The same applies when the mold is closed. Through this setting, a single power source can synchronously control the middle and upper mold plates to move simultaneously, preventing the rigid collision and damage of the middle and upper mold plates. The structure is simple and does not require complex procedures for control.

[0041] Furthermore, there are four fixed connecting arms 104 installed on the lower mold body 106 and four movable connecting arms 112 installed on the middle mold body 107. There are two first screws 102 and two second screws 110, and the two first screws 102 and the two second screws 110 are diagonally arranged.

[0042] That is, the four guide screws are located at the four corners of the rectangle, the two first screws 102 are diagonally opposite, and the two second screws 110 are also diagonally opposite. This arrangement makes the force on the middle and upper templates more even when they move, effectively reducing the deformation of the fixed connecting arm 104 and the movable connecting arm 112, and improving their service life.

[0043] Furthermore, a spring 111 is provided between the middle mold body 107 and the movable connecting arm 112. When the three mold layers are completely separated, since the upper and lower mold layers no longer press against the middle mold layer, the two middle mold bodies 107 move away from each other under the tension of the spring 111, without the need for manual separation; when the three mold layers are closed, the upper and lower mold layers press against the middle mold body 107, which automatically overcomes the elastic force of the spring 111, causing the two middle mold bodies 107 to move closer together for mold closing.

[0044] Furthermore, the drive unit includes a drive motor 114 and a belt assembly 113. The belt assembly 113 is sequentially sleeved on multiple guide screws, and finally, the belt assembly 113 is connected to the output end of the drive motor 114. The belt assembly 113 enables the drive motor 114 to transmit power to all guide screws at a constant speed and in the same direction.

[0045] Furthermore, the control unit also includes a reinforcing frame 103, on which multiple guide screws are rotatably connected. The reinforcing frame 103 is designed to improve the stability of the multiple guide screws and prevent them from wobbling.

[0046] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0047] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A terminal block injection mold, characterized in that, include: The upper mold is used for forming the top of the terminal block (11), including the upper mold body (105), the upper mold body (105) is provided with injection holes, and multiple fixed connecting arms (104) are fixedly installed on the upper mold body (105). The middle mold is used for forming the middle part of the terminal block (11), including two symmetrically arranged middle mold bodies (107), and a movable connecting arm (112) is slidably connected on the middle mold body (107); the upper and lower end faces of the middle mold body (107) are provided with chamfered slopes; The lower mold is used for forming the bottom of the terminal block (11), including the lower mold body (106), on which multiple fixed connecting arms (104) are fixedly installed; the upper mold body (105) and the lower mold body (106) are provided with inclined surfaces that are adapted to the inclined surfaces of the middle mold body (107); The opening and closing mechanism is used to control the closing and opening of the upper mold, the middle mold and the lower mold. It includes a control unit and a drive unit. The control unit includes multiple guide screws. The fixed connecting arm (104) and the movable connecting arm (112) are connected to the guide screws by a kit. The base (101) is used to hold the mold and the opening and closing mechanism.

2. The injection mold for a terminal block according to claim 1, characterized in that: The guide screw includes a first screw (102) and a second screw (110), the pitch of the first screw (102) being twice the pitch of the second screw (110); the kit is a smooth shaft sleeve (108) or a threaded shaft sleeve (109), and smooth shaft sleeves (108) are installed on all the fixed connecting arms (104) provided on the lower mold body (106); smooth shaft sleeves (108) are installed on some of the fixed connecting arms (104) provided on the upper mold body (105), and on the other part... Install threaded bushings (109); install smooth bushings (108) on part of the movable connecting arm (112) on the middle mold body (107), and install threaded bushings (109) on another part, and the kits on the upper mold and the middle mold are different on the same guide screw; the threaded bushings (109) on the movable connecting arm (112) cooperate with the second screw (110), and the threaded bushings (109) on the fixed connecting arm (104) cooperate with the first screw (102).

3. The injection mold for a terminal block according to claim 2, characterized in that: There are four fixed connecting arms (104) installed on the lower mold body (106) and four movable connecting arms (112) installed on the middle mold body (107). There are two first screws (102) and two second screws (110), and the two first screws (102) and the two second screws (110) are diagonally arranged.

4. The injection mold for a terminal block according to claim 3, characterized in that: A spring (111) is provided between the middle mold body (107) and the movable connecting arm (112).

5. A terminal block injection mold according to any one of claims 1-4, characterized in that: The drive unit includes a drive motor (114) and a belt assembly (113). The belt assembly (113) is sequentially mounted on multiple guide screws, and finally the belt assembly (113) is connected to the output end of the drive motor (114).

6. The injection mold for a terminal block according to claim 5, characterized in that: The control unit also includes a reinforcing frame (103), on which multiple guide screws are rotatably connected.

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