A mold for a temperature-controlled garment connector

Abstract

The application relates to the field of connectors, in particular to a mold for a temperature control garment connector, which comprises a fixed mold assembly and a movable mold assembly, the fixed mold assembly comprises a fixed mold plate, a fixed mold core and a bending block, the fixed mold core and the bending block are both installed on the fixed mold plate, and a first mold cavity is arranged on one side of the fixed mold core facing the movable mold assembly; the movable mold assembly comprises a movable mold plate, a movable mold core and a ejector plate, the movable mold core and the ejector plate are both installed on the movable mold plate, a second mold cavity is arranged on one side of the movable mold core facing the fixed mold assembly, the second mold cavity is provided with a pin accommodating part, one section of a connecting pin to be bent is placed in the pin accommodating part and will be bent into a pin bending section under the action of a bending part; after the fixed mold assembly and the movable mold assembly are closed, the first mold cavity and the second mold cavity are spliced into a connector mold cavity, and the connector mold cavity is used for forming an insulating square shell on the outside of a conductive sleeve. The application has the effect of improving the manufacturing efficiency of the temperature control garment connector.

Description

Technical Field

[0001] This application relates to the field of connectors, and in particular to a mold for a temperature-controlled clothing connector. Background Technology

[0002] Temperature-controlled clothing achieves active temperature regulation through an integrated temperature control system and is widely used in outdoor work, cycling, and other scenarios. To facilitate system assembly and maintenance, the internal PCB control board, switches, and heating elements rely on pluggable connectors for electrical connections. Therefore, the connector, which is fixed to the PCB board, is a key component of temperature-controlled clothing. Currently, the mainstream structure of this type of connector is a direct-insertion type with an insulating shell and conductive pins. One end of the connector pins is soldered to the PCB board, and the other end is used for mating.

[0003] In existing related technologies, connectors include an insulating shell and metal pins fixed inside the shell. During manufacturing, a semi-finished connector with straight conductive pins is first placed into a mold cavity and injection molded to form the shell. The end of the conductive pin used for soldering to the PCB board extends straight out from the bottom surface of the shell. Subsequently, a bending fixture is used to mechanically bend the extended pin to form a bent section that mates with the PCB board for soldering.

[0004] Regarding the aforementioned technologies, when facing the large-volume delivery demands of temperature-controlled clothing during peak seasonal periods, this process exhibits relatively limited manufacturing efficiency. Specifically, since bending is a separate process after injection molding, it requires additional fixtures and manpower. This makes it difficult to quickly increase connector production capacity under short-term concentrated orders, resulting in longer delivery cycles and thus restricting the market launch efficiency of the complete temperature-controlled clothing. Application content

[0005] In order to improve the manufacturing efficiency of temperature-controlled clothing connectors, this application provides a mold for temperature-controlled clothing connectors.

[0006] The mold for a temperature-controlled clothing connector provided in this application adopts the following technical solution: A mold for a temperature-controlled wear connector is provided for manufacturing a three-pronged connector by injection molding. The three-pronged connector includes a connecting pin, an insulating inner core, a conductive sleeve, a flexible spline, and an insulating square shell. The connecting pin, the insulating inner core, and the flexible spline are all located inside the conductive sleeve. The connecting pin has a bent section and a straight section, with the bent section facing the bottom of the three-pronged connector. The insulating inner core is fixedly covered by the straight section of the connecting pin and fixedly installed in the conductive sleeve. The conductive sleeve has a sleeve notch. The flexible spline has a spline bending foot, which faces the bottom of the three-pronged connector after passing through the sleeve notch. The insulating square shell is fixedly covered by the outside of the conductive sleeve and has an outer shell post, which faces the bottom of the three-pronged connector. The mold for the temperature-controlled clothing connector includes a fixed mold assembly and a moving mold assembly. The fixed mold assembly and the moving mold assembly are capable of opening and closing. The fixed mold assembly includes a fixed template, a fixed mold core, and a bending block. The fixed mold core and the bending block are both installed on the fixed template. The fixed mold core has a first mold cavity on the side facing the moving mold assembly. The moving mold assembly includes a moving mold plate, a moving mold core, and an ejector plate. The moving mold core and the ejector plate are both mounted on the moving mold plate. The moving mold core has a second mold cavity on the side facing the fixed mold assembly. The second mold cavity has a pin receiving part. One section of the connecting pin to be bent is placed in the pin receiving part and will be bent into a bent section of the pin under the action of the bending part. After the fixed mold assembly and the moving mold assembly are closed, the first mold cavity and the second mold cavity are combined to form a connector mold cavity, which is used to form an insulating square shell on the outside of the conductive sleeve.

[0007] By adopting the above technical solution, the three-pronged connector has a pin bending section, a flexible spline with a spline bending foot, and an insulating square shell with an outer shell post. The pin bending section, spline bending foot, and outer shell post all face the bottom of the three-pronged connector, thus forming a three-point mating layout. This disperses the tensile stress and ensures the electrical connection stability between the three-pronged connector and the PCB board. Furthermore, the insulating inner core is fixedly wrapped around the straight section of the pin and fixedly installed on the conductive sleeve, thereby enhancing the insulation isolation between the pin and the conductive sleeve and reducing the occurrence of electrical short circuits. In addition, the insulating square shell is fixedly wrapped around the outside of the conductive sleeve, and the insulating square shell is square with a flat bottom surface, allowing the three-pronged connector to fit tightly against the PCB board, reducing post-installation shaking and displacement, and improving assembly stability.

[0008] Furthermore, when the fixed mold assembly and the moving mold assembly are molded together to manufacture the three-pronged connector, the bending block can abut against the connecting pin located in the pin receiving part and bend the connecting pin. Thus, the bending process of the connecting pin and the injection molding process of the insulating square shell are completed together during the mold closing process, thereby eliminating the need for a separate bending step after injection molding. This facilitates the improvement of the manufacturing efficiency of temperature-controlled wear connectors and shortens the delivery cycle.

[0009] Optionally, both the first mold cavity and the second mold cavity are provided with two rows, and two bending blocks are provided, with the two bending blocks corresponding to the two rows of the second mold cavity respectively.

[0010] By adopting the above technical solution, a single mold closing can simultaneously bend two rows of connecting pins and synchronously form two rows of insulating square shells in two sets of connector mold cavities, thereby further increasing the manufacturing efficiency of temperature-controlled wear connectors and meeting the needs of mass delivery.

[0011] Optionally, the fixed mold core slides vertically to engage with the fixed template, and both bending blocks slide vertically through the fixed template.

[0012] By adopting the above technical solution, during mold closing, the two bending blocks can slide vertically smoothly and synchronously under the push of the moving mold core and abut against the two rows of connecting pins, thereby bending the two rows of connecting pins in an orderly manner. This helps to improve the bending accuracy and consistency of the two rows of connecting pins, reduce stress concentration during bending, and improve the product yield of temperature-controlled fitting connectors.

[0013] Optionally, the conductive sleeve is cylindrical, and a bending foot insertion hole is provided at the bottom of the second mold cavity. When the fixed mold assembly and the moving mold assembly are closed, the bending block abuts against the connecting pin, and the spline bending foot is inserted into the bending foot insertion hole.

[0014] By adopting the above technical solution, when the fixed mold assembly and the moving mold assembly are closed, the spline bending foot is inserted into the bending foot socket, allowing the bending foot socket to accurately position and circumferentially limit the spline bending foot. This helps reduce the displacement and deformation of the spline bending foot due to injection pressure during injection molding, ensuring the molding accuracy of the insulating square shell. Furthermore, this insertion fit, through the spline bending foot's tight fit with the bending foot socket, restricts the circumferential rotation of the conductive sleeve when the bending block abuts against the connecting pin, thus reducing the occurrence of bending direction deviation of the connecting pin and ensuring the bending quality of the connecting pin. It also facilitates the user in placing the conductive sleeve at the correct angle in the second mold cavity, further reducing the occurrence of bending deviation of the connecting pin.

[0015] Optionally, the bottom of the bending block is provided with a rounded corner, and the bending block abuts against the connecting pin through the rounded corner.

[0016] By adopting the above technical solution, the bottom of the bending block is provided with a rounded corner, and the bending block abuts against the connecting pin through the rounded corner, so that the bending block can contact the connecting pin with the arc surface when the mold is closed, thereby smoothly and evenly transmitting the bending force to the connecting pin, which helps to reduce the occurrence of local stress concentration and force skew caused by sharp corner contact.

[0017] Optionally, the conductive sleeve is cylindrical, and the moving template is provided with a pin limiting groove, which is vertically arranged and connected to the pin receiving part.

[0018] By adopting the above technical solution, the groove wall of the pin limiting groove forms a lateral limit on the connecting pin, thereby reducing the occurrence of lateral swing or deflection of the connecting pin during the bending process. This helps to improve the accuracy and consistency of the bending position of the connecting pin and ensure the bending quality of the connecting pin.

[0019] Optionally, the moving template is provided with a forming positioning part, which is detachably installed on the main body of the moving mold core. The pin limiting groove is located in the forming positioning part, and the forming positioning part is provided with a positioning protrusion that can be inserted into and adapted to the sleeve notch.

[0020] By adopting the above technical solution, the molding positioning part is detachably installed on the main body of the moving mold core, and the pin limiting groove and positioning protrusion are both integrated into the molding positioning part. This allows the pin limiting groove or positioning protrusion to be repaired by replacing the molding positioning part separately after wear, thereby reducing mold maintenance costs. Furthermore, the positioning protrusion can be inserted into the sleeve notch to form circumferential positioning of the conductive sleeve. This helps to further reduce circumferential rotation of the conductive sleeve during pin bending and injection molding, ensuring the accuracy of the pin bending direction and improving the molding precision of the insulating square shell. Optionally, when the conductive sleeve is forming an insulating square shell inside the connector mold cavity, the conductive sleeve is horizontally positioned, and the forming positioning part slides horizontally to engage with the main body of the moving mold core.

[0021] By adopting the above technical solution, when forming the insulating square shell in the connector mold cavity, both the conductive sleeve and the connecting pin maintain a horizontal posture. This facilitates the smooth vertical contact of the bending block with the connecting pin during mold closing and promotes uniform filling of the injection material around the conductive sleeve, thereby reducing uneven filling caused by the tilt of the conductive sleeve and improving the molding quality of the insulating square shell. Furthermore, the horizontal sliding fit of the molding positioning part with the main body of the moving mold core allows the user to smoothly install or remove the molding positioning part horizontally, facilitating the assembly and disassembly of the molding positioning part and improving the usability of the mold. Simultaneously, this horizontal sliding fit helps ensure the relative positional accuracy of the molding positioning part after each installation, reducing misalignment of the pin limiting groove or positioning protrusion due to assembly deviations, further ensuring the accuracy of the bending position of the connecting pin and the positioning stability of the conductive sleeve.

[0022] Optionally, the main body of the moving mold core is provided with a sliding insertion hole, and the molding top is provided with a sliding insertion post, which is horizontally fitted into the sliding insertion hole in a pluggable manner.

[0023] By adopting the above technical solution, the sliding pin can be plugged into and horizontally fitted into the sliding socket, so that the molding positioning part can be accurately and stably installed on the main body of the moving mold core in the horizontal direction by plugging in. This provides reliable guidance for the horizontal sliding of the molding positioning part, which helps to ensure the positional repeatability accuracy of the molding positioning part after each disassembly and assembly, and reduces the occurrence of misalignment of the pin limiting groove or positioning protrusion due to assembly deviation. This further improves the accuracy and stability of the bending position of the connecting pin and the circumferential positioning of the conductive sleeve, and helps to improve the overall manufacturing yield of the three-pin connector.

[0024] Optionally, the end of the sliding insert is chamfered.

[0025] By adopting the above technical solution, the chamfer on the sliding pin guides the sliding pin during insertion into the sliding hole, thereby reducing the difficulty of aligning the sliding pin with the sliding hole. This facilitates quick and accurate insertion of the sliding pin into the sliding hole by the user, improving the assembly and disassembly efficiency of the molding positioning part. Furthermore, the chamfer reduces scratching between the end of the sliding pin and the opening of the sliding hole, thus minimizing surface damage to both the sliding pin and the sliding hole, ensuring the fitting accuracy of the sliding pin and the sliding hole, and extending the service life of the mold.

[0026] In summary, this application includes at least one of the following beneficial technical effects: The three-pronged connector features a bent pin section, a flexible spline with a splined bend, and an insulating square shell with an outer shell post. All three sections—the bent pin section, the splined bend, and the outer shell post—face the bottom of the connector, creating a three-point mating arrangement. This disperses tensile stress and ensures stable electrical connection between the connector and the PCB. Furthermore, an insulating core is fixedly wrapped around the straight section of the pin and mounted on the conductive sleeve, enhancing insulation between the pin and the sleeve and reducing the risk of short circuits. Additionally, the square insulating shell, with a flat bottom, ensures a tight fit between the connector and the PCB, minimizing post-installation movement and improving assembly stability. Furthermore, when the fixed mold assembly and the moving mold assembly are molded together to manufacture the three-pronged connector, the bending block can abut against the connecting pin located in the pin receiving part and bend the connecting pin. Thus, the bending process of the connecting pin and the injection molding process of the insulating square shell are completed together during the mold closing process, thereby eliminating the separate bending step after injection molding, which facilitates the improvement of the manufacturing efficiency of temperature-controlled wear connectors and shortens the delivery cycle. The groove wall of the pin limiting groove provides lateral restraint to the connecting pin, thereby reducing the occurrence of lateral swinging or deflection of the connecting pin during bending. This helps to improve the accuracy and consistency of the bending position of the connecting pin and ensure the bending quality of the connecting pin. Attached Figure Description

[0027] Figure 1 This is a front view of the three-pronged connector of Embodiment 1 of this application.

[0028] Figure 2 This is a rear view of the three-pronged connector of Embodiment 1 of this application.

[0029] Figure 3 This is a bottom view of the three-pronged connector of Embodiment 1 of this application.

[0030] Figure 4 This is a cross-sectional view of the three-pronged connector of Embodiment 1 of this application.

[0031] Figure 5 This is a mold opening diagram of the mold in Embodiment 2 of this application.

[0032] Figure 6 This is a diagram showing the distribution of the first mold cavity in Embodiment 2 of this application.

[0033] Figure 7 This is a cross-sectional view of the mold guide pillar and the fixed mold core in Embodiment 2 of this application.

[0034] Figure 8 This is a diagram illustrating the bending of the connecting pin in Embodiment 2 of this application, with the pin receiving portion placed in the pin receiving portion.

[0035] Figure 9 This is a diagram illustrating the molding of the connector in the connector mold cavity according to Embodiment 2 of this application.

[0036] Figure 10 This is a diagram illustrating the engagement of the bent section of the insert pin and the insert pin limiting groove in a single second mold cavity according to Embodiment 3 of this application.

[0037] Figure 11 This is an exploded view of the main body of the molding positioning part and the moving mold core in Embodiment 3 of this application.

[0038] Figure 12 This is an overall view of the molding and positioning part in Embodiment 3 of this application.

[0039] Figure 13 This is a diagram illustrating the fit between the molding positioning part and the sleeve notch in Embodiment 3 of this application.

[0040] Explanation of reference numerals in the attached drawings: 11. Connecting pin; 111. Pin bent section; 112. Pin straight section; 12. Insulating inner core; 13. Conductive sleeve; 131. Sleeve notch; 14. Elastic spline; 141. Spline bent foot; 15. Insulating square shell; 151. Outer shell insert; 201. First mold cavity; 21. Fixed mold plate; 211. Mold guide pillar; 22. Fixed mold core; 23. Bending block; 231. Rounded corner; 301. Second mold cavity; 302. Bending foot insertion hole; 303. Pin receiving part; 304. Pin limiting groove; 31. Moving mold plate; 32. Moving mold core; 33. Ejector plate; 34. Forming positioning part; 341. Sliding insert; 342. Positioning protrusion. Detailed Implementation

[0041] The following is in conjunction with the appendix Figure 1-13 This application will be described in further detail.

[0042] Example 1: This application discloses a three-pronged connector that can be mounted on the PCB board of a temperature-controlled suit. (See attached image) Figures 1 to 4The three-prong connector includes a connecting pin 11, an insulating inner core 12, a conductive sleeve 13, a flexible spline 14, and an insulating square shell 15. The connecting pin 11 is made of high-conductivity brass or phosphor bronze and undergoes low-temperature annealing softening treatment to improve its toughness, thereby reducing stress fracture during bending. The connecting pin 11 is generally L-shaped, including a bent section 111 and a straight section 112. The bent section 111 faces the bottom of the three-prong connector and is used to insert into the PCB board mounted on the temperature-controlled clothing. In some other embodiments, a U-shaped groove or V-shaped groove can be provided in the bent section 111, and a tin-plated layer can be applied to the surface of the bent section 111 to reduce oxidation of the connecting pin 11 and improve solder wettability, thereby increasing the solder immersion area and mechanical engagement force, which helps to reduce the occurrence of cold solder joints and desoldering.

[0043] Reference Figure 4 Both the straight section 112 of the pin and the insulating inner core 12 are located inside the conductive sleeve 13. The inner side of the insulating inner core 12 is fixedly covered by the straight section 112 of the pin connecting the pin 11, and the outer side of the insulating inner core 12 is fixedly installed inside the conductive sleeve 13. The insulating inner core 12 is made of insulating material to enhance the electrical insulation between the pin connecting the pin 11 and the conductive sleeve 13, reduce the occurrence of electrical short circuits, and thus enable the three-pin connector to stably transmit electrical signals.

[0044] Reference Figure 3 and Figure 4 The conductive sleeve 13 is cylindrical, and an approximately rectangular sleeve notch 131 is provided at the end of the conductive sleeve 13. A conductive elastic spline 14 is fixedly installed inside the conductive sleeve 13. The elastic spline 14 surrounds the straight section 112 of the pin, so that after the corresponding connector is inserted and mated with the straight section 112 of the pin, the elastic spline 14 abuts against the connector, thereby making the connector securely connected to the three-pin connector. The elastic spline 14 has a spline bend 141, which protrudes from the sleeve notch 131 and fits against the inner wall of the sleeve notch 131. The spline bend 141 extends from the sleeve notch 131 toward the bottom of the three-pin connector, and the spline bend 141 is parallel to the pin bend section 111.

[0045] Reference Figure 2 and Figure 3An insulating square shell 15 is fixedly wrapped around the conductive sleeve 13. The insulating square shell 15 is square, and its bottom is flat to facilitate stable contact with the surface of the PCB board. An outer shell post 151 is integrally formed on the bottom of the insulating square shell 15, facing the bottom of the three-pin connector for easy insertion into the corresponding socket on the PCB board. The bent pin section 111, the spline bent leg 141, and the outer shell post 151 together form a three-point insertion layout, which can distribute the lateral pulling force generated by wearing activities to three insertion points, thereby reducing soldering cracks and poor contact caused by single-point stress, and thus helping to ensure the electrical connection stability between the three-pin connector and the PCB board.

[0046] The implementation principle of a three-pronged connector in Embodiment 1 of this application is as follows: The three-pronged connector comprises a connecting pin 11, an insulating inner core 12, a conductive sleeve 13, a flexible spline 14, and an insulating square shell 15, forming a compact overall structure. The pin bending section 111 of the connecting pin 11, the spline bending foot 141 of the flexible spline 14, and the outer shell insertion post 151 of the insulating square shell 15 all face downwards, forming a three-point insertion layout, which can disperse the wearing tensile stress, thereby improving the electrical connection stability with the PCB board. At the same time, the insulating inner core 12 fixes and covers the connecting pin 11 and is installed inside the conductive sleeve 13, so that the connecting pin 11 and the conductive sleeve 13 obtain reliable insulation isolation, which helps to reduce the risk of short circuit. In addition, the bottom surface of the insulating square shell 15 is flat, which can fit tightly against the PCB board, further reducing the occurrence of three-pronged connector wobbling and displacement.

[0047] Example 2: This application discloses a mold for a temperature-controlled clothing connector, used to manufacture the three-pronged connector described in Example 1 via injection molding. (See also...) Figure 5 The mold for the temperature-controlled clothing connector includes a fixed mold assembly and a moving mold assembly, which are opened or closed in the vertical direction using an existing vertical injection molding machine.

[0048] Reference Figure 6 and Figure 7 The fixed mold assembly includes a fixed template 21, a fixed mold core 22, and a bending block 23. Four mold guide pillars 211 are fixedly installed at the bottom of the rectangular fixed template 21, and the four mold guide pillars 211 are arranged in a rectangular pattern. Circular mold guide holes are vertically drilled through each of the four corners of the rectangular fixed mold core 22. The four mold guide pillars 211 slide vertically through each mold guide hole, allowing the fixed mold core 22 to slide vertically and engage with the fixed template 21. The bottom diameter of the mold guide pillars 211 is larger than the diameter of the mold guide holes to ensure the stability of the fixed mold core 22 when the mold is open. (Refer to...) Figure 6The fixed mold core 22 has two rows of first mold cavities 201 on the side facing the moving mold assembly. The shape of the first mold cavity 201 is adapted to the upper part of the three-pin connector so as to cooperate with the second mold cavity 301 of the moving mold assembly and efficiently manufacture the insulating square shell 15 of the two rows of the three-pin connector.

[0049] Two bending blocks 23 are provided, and both approximately cuboid-shaped bending blocks 23 are fixedly installed at the bottom of the fixed template 21. The bending blocks 23 slide vertically through the rectangular through slots corresponding to those opened in the fixed mold core 22 and are positioned opposite each other so that the two rows of connecting pins 11 can be bent simultaneously when the mold is closed. The bottom of the bending block 23 is provided with a rounded corner 231. When the connecting pins 11 are bent under pressure, the bending block 23 abuts against the connecting pins 11 through the rounded corner 231, so that the bending force can be transmitted to the connecting pins 11 smoothly and evenly. This helps to reduce the occurrence of local stress concentration and force skew caused by sharp corner contact, thereby improving the bending quality of the connecting pins 11.

[0050] Reference Figure 5 The moving mold assembly includes a moving mold plate 31, a moving mold core 32, and an ejector plate 33. The moving mold core 32 is fixedly installed on the top of the moving mold plate 31. A second mold cavity 301 is opened on the side of the moving mold core 32 facing the fixed mold assembly. The second mold cavity 301 has two rows, and the two rows of second mold cavities 301 correspond to two first mold cavities 201 respectively. After the fixed mold assembly and the moving mold assembly are closed, the first mold cavity 201 and the corresponding second mold cavity 301 are assembled to form a connector mold cavity. The connector mold cavity is used to form an insulating square shell 15 on the outside of the conductive sleeve 13. The ejector plate 33 is located at the bottom of the moving mold core 32, and the ejector plate 33 slides vertically to cooperate with the moving mold plate 31. The ejector plate 33 can move vertically under the action of the injection molding machine, and then ejects the formed three-legged connector and runner from the bottom of the second mold cavity 301 through its own ejector pins, thereby facilitating product removal.

[0051] Reference Figure 8 and Figure 9The bottom of the second mold cavity 301 is provided with a bending foot insertion hole 302, which can accurately position and circumferentially limit the spline bending foot 141 of the elastic spline 14. Furthermore, the second mold cavity 301 is also provided with a pin receiving portion 303, in which one section of the connecting pin 11 to be bent is placed. When the fixed mold assembly and the moving mold assembly are closed, the spline bending foot 141 is inserted into the bending foot insertion hole 302, which helps to reduce the displacement and deformation of the spline bending foot 141 due to injection pressure during injection molding, thereby improving the molding accuracy of the insulating square shell 15. Moreover, the insertion and engagement of the spline bending foot 141 with the bending foot insertion hole 302 can limit the circumferential rotation of the conductive sleeve 13 when the bending block 23 abuts against the connecting pin 11 for bending, which helps to reduce the occurrence of skewness in the bending direction of the connecting pin 11.

[0052] The implementation principle of the mold for a temperature-controlled clothing connector in Embodiment 2 of this application is as follows: Step S1: The operator horizontally inserts the pre-assembled connecting pin 11, containing the insulating inner core 12, conductive sleeve 13, and elastic spline 14, into the second mold cavity 301 of the moving mold core 32, ensuring that the portion of the connecting pin 11 protruding from the insulating inner core 12 accurately falls into the pin receiving portion 303. Furthermore, the spline bending foot 141 at the end of the elastic spline 14 is aligned and inserted into the bending foot insertion hole 302 at the bottom of the second mold cavity 301. The insertion and engagement of the spline bending foot 141 and the bending foot insertion hole 302 enables circumferential positioning of the conductive sleeve 13, facilitating quick confirmation of the installation angle of the conductive sleeve 13 by the operator, thereby reducing directional deviation during subsequent bending processes.

[0053] Step S2: The injection molding machine moves the moving mold assembly upward to close the mold. In the open mold state, the bottom of the bending block 23 is exposed on the bottom surface of the fixed mold core 22, so that when the moving mold assembly rises, the connecting pin 11 placed in the second mold cavity 301 will first contact the rounded corner 231 at the bottom of the bending block 23. The rounded corner 231 of the bending block 23 gently abuts against the connecting pin 11 with an arc surface, and as the moving mold assembly continues to rise, it applies a gradually increasing bending force to the connecting pin 11, causing the straight end of the connecting pin 11 to begin to bend downward and deform into the bent pin section 111. During the bending force transmission process, the spline bending foot 141 is always circumferentially limited by the bending foot insertion hole 302, effectively suppressing the circumferential rotation of the conductive sleeve 13 caused by the bending force, thereby helping to ensure that the bending direction of the connecting pin 11 is accurate and consistent, and reducing the occurrence of bending deviation. Furthermore, the bending block 23 applies force through the rounded corner 231, so that the bending force is applied to the connecting pin 11 smoothly and evenly, which helps to reduce local stress concentration caused by sharp corner contact, thereby improving the bending quality of the connecting pin 11.

[0054] Subsequently, the top surface of the moving mold core 32 contacts the bottom surface of the fixed mold core 22, pushing the fixed mold core 22 to slide vertically upward along the mold guide post 211. Since the bending block 23 is fixedly installed on the fixed template 21, the fixed mold core 22 slides upward relative to the fixed template 21, causing the bending block 23 to extend further downward from the rectangular through slot of the fixed mold core 22, continuing to bend the connecting pin 11 to a preset angle, ultimately forming the bent section 111 of the pin. At the same time, since both the first mold cavity 201 and the second mold cavity 301 have two rows, and the two bending blocks 23 correspond to the two rows of the second mold cavities 301 respectively, a single mold closing action can drive the two bending blocks 23 to simultaneously bend the two rows of connecting pins 11, thereby multiplying the bending efficiency.

[0055] Step S3: After the mold is closed, the fixed mold core 22 and the moving mold core 32 fit tightly together, and the first mold cavity 201 and the corresponding second mold cavity 301 are assembled to form a complete connector mold cavity. The injection molding machine injects molten insulating material into the connector mold cavity. The insulating material flows outside the conductive sleeve 13 and fills to form an insulating square shell 15. During this process, the spline bending foot 141 of the elastic spline 14 is always inserted into the bending foot insertion hole 302. The circumferential and axial limiting of the spline bending foot 141 by the bending foot insertion hole 302 can offset part of the impact of the injection pressure, which helps to avoid the spline bending foot 141 from shifting or deforming, thereby improving the molding accuracy of the insulating square shell 15 and the positional accuracy of the spline bending foot 141.

[0056] In addition, the connecting pin 11 is reliably positioned within the pin receiving portion 303, and the bending block 23 remains in a pressing state, so that the pin bending section 111 of the connecting pin 11 maintains a stable bending angle during the injection molding process, thereby further ensuring the pin position accuracy of the three-pin connector.

[0057] Step S4: After the injection molding material cools and solidifies, the injection molding machine drives the moving mold assembly to move downwards to open the mold. The moving mold core 32 descends with the moving platen 31, and the fixed mold core 22 resets downwards under the guidance of the mold guide pillar 211, causing the bending block 23 to exit from the connector mold cavity. Subsequently, the ejection mechanism of the injection molding machine pushes the ejector plate 33 upwards, and the ejector pins on the ejector plate 33 extend into the bottom of the second mold cavity 301, ejecting the molded three-prong connector and the runner solidified material together. The operator can then remove the finished three-prong connector, completing one production cycle.

[0058] Through the above steps, the bending process of the connecting pin 11 and the injection molding process of the insulating square shell 15 are completed simultaneously during the mold closing stroke, integrating the independent bending steps in the traditional process, eliminating the need for special bending fixtures and manual operation, thereby improving the manufacturing efficiency of temperature-controlled wear connectors.

[0059] Example 3: This application discloses a moving mold core for use in the mold of the temperature-controlled wear connector described in Example 2. The moving mold core 32 is provided with a pin limiting groove 304, which is vertically arranged and communicates with the pin receiving portion 303. The pin limiting groove 304 has a slot on its side for the connecting pin 11 to bend into. During the bending process of the connecting pin 11, the connecting pin 11 will gradually conform to the pin limiting groove 304, which is conducive to the occurrence of lateral swing or deflection of the connecting pin 11, thereby improving the accuracy and consistency of the bending position of the connecting pin 11 and ensuring the bending quality of the connecting pin 11.

[0060] Specifically, refer to Figure 10 and Figure 11 The moving template 31 includes a main body and a molding positioning part 34, and each second mold cavity 301 is provided with a corresponding molding positioning part 34. The main body of the moving template 31 has a sliding insertion hole, and the molding positioning part 34 has a corresponding sliding insertion post 341. The end of the sliding insertion post 341 is chamfered, and the sliding insertion post 341 can be horizontally installed and removed from the sliding insertion hole. Through the insertion guide of the sliding insertion post 341 and the sliding insertion hole, the molding positioning part 34 can be accurately and smoothly installed or removed in the horizontal direction, which helps to ensure the positional repeatability accuracy of the molding positioning part 34 after each installation and removal.

[0061] Both the pin receiving portion 303 and the pin limiting groove 304 are formed and positioned on the molding positioning portion 34. The pin limiting groove 304 is vertically arranged and connected to the pin receiving portion 303. During the bending process of the connecting pin 11, the connecting pin 11 is laterally limited by the pin limiting groove 304 and the other half of the limiting groove (not shown in the figure) correspondingly formed on the moving mold core 32, which helps to reduce the occurrence of lateral swing or deflection of the connecting pin 11.

[0062] Reference Figure 12 and Figure 13 The molding positioning part 34 is also integrally provided with a positioning protrusion 342, and the shape of the positioning protrusion 342 is adapted to the sleeve notch 131 of the conductive sleeve 13. When the conductive sleeve 13 is horizontally embedded in the second mold cavity 301, the positioning protrusion 342 can be inserted and matched with the sleeve notch 131 along with the molding positioning part 34, thereby forming a circumferential positioning of the conductive sleeve 13. This helps to reduce the circumferential rotation of the conductive sleeve 13 during bending and injection molding, thereby ensuring the accuracy of the bending direction of the connecting pin 11 and improving the molding accuracy of the insulating square shell 15.

[0063] The implementation principle of a moving mold core in Embodiment 3 of this application is as follows: First, the operator horizontally embeds a semi-finished product pre-installed with an insulating inner core 12, a conductive sleeve 13, a connecting pin 11, and an elastic spline 14 into the second mold cavity 301 of the moving mold core 32 body. The spline bending foot 141 is vertically inserted into the bending foot insertion hole 302, and the straight section of the connecting pin 11 is aligned with the pin receiving portion 303. Then, the operator pushes the forming positioning portion 34 horizontally into the body body. The sliding pin 341 smoothly inserts into the sliding insertion hole under the chamfered guide, achieving detachable installation of the forming positioning portion 34. At this time, the positioning protrusion 342 engages with the sleeve notch 131 of the conductive sleeve 13, forming circumferential positioning of the conductive sleeve 13. Simultaneously, the pin receiving portion 303 communicates with the pin limiting groove 304.

[0064] During mold closing, the bending block 23 presses downward against the connecting pin 11. Under the bending force, the connecting pin 11 gradually bends downward and fits into the vertically set pin limiting groove 304. The groove wall of the pin limiting groove 304 provides lateral support to the connecting pin 11, which helps to reduce the occurrence of lateral wobble of the connecting pin 11, thereby improving the accuracy of the bending position. When the bending block 23 continues to press to the predetermined depth, the side wall of the bending block 23 closes the lateral opening of the pin limiting groove 304, so that the bent connecting pin 11 is completely confined within the pin limiting groove 304, thus maintaining a stable bending posture during subsequent injection molding, which helps to further improve product consistency and bending quality.

[0065] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A mold for a temperature-controlled clothing connector, characterized in that: For manufacturing a three-pronged connector by injection molding, the three-pronged connector includes a connecting pin (11), an insulating inner core (12), a conductive sleeve (13), a flexible spline (14), and an insulating square shell (15). The connecting pin (11), the insulating inner core (12), and the flexible spline (14) are all located inside the conductive sleeve (13). The connecting pin (11) has a pin bending section (111) and a pin straight section (112). The pin bending section (111) faces the bottom of the three-pronged connector. The insulating inner core (12) is fixedly packaged. A straight section (112) of the pin is covered by the connecting pin (11) and fixedly installed on the conductive sleeve (13). The conductive sleeve (13) has a sleeve notch (131). The elastic spline (14) has a spline bending foot (141). The spline bending foot (141) faces the bottom of the three-pin connector after passing through the sleeve notch (131). The insulating square shell (15) is fixedly covered on the outside of the conductive sleeve (13). The insulating square shell (15) has an outer shell post (151). The outer shell post (151) faces the bottom of the three-pin connector. The mold of the temperature-controlled clothing connector includes a fixed mold assembly and a moving mold assembly. The fixed mold assembly and the moving mold assembly are capable of opening and closing the mold. The fixed mold assembly includes a fixed template (21), a fixed mold core (22), and a bending block (23). The fixed mold core (22) and the bending block (23) are both installed on the fixed template (21). The fixed mold core (22) has a first mold cavity (201) on the side facing the moving mold assembly. The moving mold assembly includes a moving mold plate (31), a moving mold core (32), and an ejector plate (33). The moving mold core (32) and the ejector plate (33) are both installed on the moving mold plate (31). The moving mold core (32) has a second mold cavity (301) on the side facing the fixed mold assembly. The second mold cavity (301) has a pin receiving part (303). One section of the connecting pin (11) to be bent is placed in the pin receiving part (303) and will be bent into a bent section (111) under the action of the bending part. After the fixed mold assembly and the moving mold assembly are closed, the first mold cavity (201) and the second mold cavity (301) are assembled into a connector mold cavity, which is used to form an insulating square shell (15) on the outside of the conductive sleeve (13).

2. The mold for a temperature-controlled clothing connector according to claim 1, characterized in that: The first mold cavity (201) and the second mold cavity (301) are each provided with two rows, and there are two bending blocks (23), with the two bending blocks (23) corresponding to the two rows of the second mold cavity (301) respectively.

3. The mold for a temperature-controlled clothing connector according to claim 2, characterized in that: The fixed mold core (22) slides vertically to fit into the fixed template (21), and both of the bending blocks (23) slide vertically through the fixed template (21).

4. The mold for a temperature-controlled clothing connector according to claim 1, characterized in that: The conductive sleeve (13) is cylindrical, and the bottom of the second mold cavity (301) is provided with a bent foot insertion hole (302). When the fixed mold assembly and the moving mold assembly are closed, the bent block (23) abuts against the connecting pin (11), and the spline bent foot (141) is inserted into the bent foot insertion hole (302).

5. The mold for a temperature-controlled clothing connector according to claim 4, characterized in that: The bottom of the bending block (23) is provided with a rounded corner (231), and the bending block (23) abuts against the connecting pin (11) through the rounded corner (231).

6. The mold for a temperature-controlled clothing connector according to claim 1 or 4, characterized in that: The conductive sleeve (13) is cylindrical, and the moving template (31) is provided with a pin limiting groove (304). The pin limiting groove (304) is vertically arranged and connected to the pin receiving part (303).

7. The mold for a temperature-controlled clothing connector according to claim 6, characterized in that: The moving template (31) is provided with a forming positioning part (34), which is detachably installed on the main body of the moving mold core (32). The pin limiting groove (304) is located in the forming positioning part (34). The forming positioning part (34) is provided with a positioning protrusion (342), which can be inserted into and adapted to the sleeve notch (131).

8. The mold for a temperature-controlled clothing connector according to claim 7, characterized in that: When the conductive sleeve (13) forms an insulating square shell (15) inside the connector mold cavity, the conductive sleeve (13) is horizontally positioned, and the forming positioning part (34) slides horizontally to engage with the main body of the moving mold core (32).

9. The mold for a temperature-controlled clothing connector according to claim 8, characterized in that: The main body of the moving mold core (32) is provided with a sliding insertion hole, and the top of the molding is provided with a sliding insertion post (341). The sliding insertion post (341) is horizontally fitted into the sliding insertion hole in a pluggable manner.

10. The mold for a temperature-controlled clothing connector according to claim 9, characterized in that: The end of the sliding insert (341) is chamfered.

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