Threaded core-pulling injection mold for medical connector

Abstract

The invention relates to the technical field of medical instruments, and discloses a threaded core-pulling injection mold of a medical connector, the threaded core-pulling injection mold comprises a main mold and an auxiliary mold connected to the main mold, the main mold and the auxiliary mold are provided with molding cavities for forming required products, the main mold is connected with an injection molding channel for injection molding into the molding cavities, and the auxiliary mold is connected with a threaded core-pulling mold; the main mold is connected with a fixed seat, a threaded core-pulling mechanism is arranged on the fixed seat, the threaded core-pulling mechanism comprises a sliding cylinder arranged on the fixed seat in a sliding manner, a positioning groove used for clamping the sliding cylinder is formed in the main mold, the end part, close to the main mold, of the sliding cylinder abuts against the inner wall of the positioning groove, and a mold pulling mechanism is arranged on the main mold. The forming cavity is formed among the mold drawing mechanism, the main mold, the auxiliary mold and the sliding cylinder, the sliding cylinder is arranged on a connecting column of a formed connector in a sleeving mode, the end of the sliding cylinder abuts against the end face of a cone of a product, and a driving assembly which drives the sliding cylinder to move and facilitates mold drawing is arranged on the fixing base. The device has the effect of improving the production efficiency and the product quality.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and in particular to a threaded core-pulling injection mold for a medical connector. Background Art

[0002] Dental medical instruments include dental mobile phones, oral mobile phone sterilizers, tooth extraction forceps, dental elevators, dental picks and other surgical instruments, manual dental instruments, dental rotary instruments, dental injection instruments, root canal instruments, etc. The range of dental medical instruments is wide, including dozens of connectors between instruments and handles.

[0003] Depending on the type and material of the connector, the processing method is also different. Now it is necessary to produce a connector, including a cone, the two ends of the cone are coaxial and integrally formed with a mounting head and a connecting column, the mounting head is located on the side with a smaller diameter of the cone, and the diameter of the connecting column is smaller than the diameter connected to one end of the cone.

[0004] During the production process of the above connector, a semi-finished product is formed by mold opening and injection molding, and then the desired product is formed by turning and grinding. This production method has problems such as complicated processing, low production efficiency and poor product quality. Summary of the invention

[0005] In order to improve production efficiency and product quality, the present application provides a threaded core-pulling injection mold for a medical connector.

[0006] The present application provides a threaded core-pulling injection mold for a medical connector, adopting the following technical scheme: a threaded core-pulling injection mold for a medical connector, comprising a main mold and a sub-mold connected to the main mold, the main mold and the sub-mold being provided with a molding cavity for forming a desired product, the main mold being connected with an injection channel for injecting molding into the molding cavity, the main mold being connected with a fixed seat, the fixed seat being provided with a threaded core-pulling mechanism, the threaded core-pulling mechanism comprising a sliding cylinder slidably arranged on the fixed seat, the main mold being provided with a positioning groove for clamping the sliding cylinder, the end of the sliding cylinder close to the main mold being pressed against the inner wall of the positioning groove, the main mold being provided with a mold pulling mechanism, the molding cavity being arranged between the mold pulling mechanism, the main mold, the sub-mold and the sliding cylinder, the sliding cylinder being sleeved on the connecting column of the molded connector, and the end of the sliding cylinder being pressed against the end surface of the product cone, and the fixed seat being provided with a driving component for driving the sliding cylinder to move and facilitating mold pulling.

[0007] By adopting the above technical scheme, the product is formed in the molding cavity, and the driving component acts on the sliding cylinder to make the sliding cylinder move in the direction away from the molding cavity, thereby realizing core pulling, and acts on the mold extraction mechanism and the sub-mold to make the sub-mold and the mold extraction mechanism move in the direction away from the molding cavity, thereby facilitating product removal.

[0008] Optionally, the drive assembly includes a drive gear coaxially fixed outside the sliding cylinder, a drive screw penetrating the sliding cylinder is fixed on the fixed seat, the drive screw is threadedly connected to the sliding cylinder, and the drive mechanism also includes a drive member that drives the drive gear to rotate.

[0009] By adopting the above technical solution, the driving member acts on the driving gear, and the driving gear drives the sliding cylinder to rotate. Under the action of the driving screw, the sliding cylinder moves toward the direction close to the molding cavity during the rotation process, and the sliding cylinder is pressed against the inner wall of the positioning groove, thereby completing the positioning of the sliding cylinder.

[0010] Optionally, the molding cavity, the threaded core pulling mechanism and the mold pulling mechanism are two groups, the driving member includes a transmission gear rotatably connected to the fixed seat and driving two driving gears to rotate at the same time, and the fixed seat is provided with a driving motor that drives the transmission gear to rotate.

[0011] By adopting the above technical solution, the driving motor drives the transmission gear to rotate, and the transmission gear drives the two driving gears to rotate, so that under the action of the driving screw, the sliding cylinder is driven to move toward the molding cavity. The transmission gear drives the two driving gears to rotate at the same time, thereby improving the processing efficiency.

[0012] Optionally, the driving gear is sleeved outside the sliding cylinder, and key slots are provided on the inner wall of the driving gear and the outer wall of the sliding cylinder, and key blocks are installed in the key slots to enable the sliding cylinder and the driving gear to rotate synchronously. The sliding cylinders on both sides of the driving gear are provided with retaining grooves, and retaining rings are installed in the retaining grooves to prevent the driving gear from moving axially.

[0013] By adopting the above technical solution, the driving gear is connected through the keyway and the key block, and then fixed on the sliding cylinder through the clamping ring, which facilitates the installation, disassembly and replacement of the driving gear on the sliding cylinder.

[0014] Optionally, a positioning block is installed on the fixing seat to position the sliding cylinder and to make the end of the sliding cylinder press against the inner wall of the positioning groove.

[0015] By adopting the above technical solution, the setting of the positioning block prevents the sliding cylinder from moving backward during the processing of the product and affecting the accuracy of the product.

[0016] Optionally, the outer wall of the sliding cylinder is provided with a conical structure, and the positioning block is provided with a conical groove that fits the outer wall of the sliding cylinder. When the positioning block slides toward the sliding cylinder, it pushes the sliding cylinder to press against the inner wall of the positioning groove.

[0017] By adopting the above technical solution, the setting of the conical structure and the conical groove can reduce the accuracy of the matching between the processing positioning block and the sliding cylinder, act on the positioning block, and make the positioning block move in the direction of pressing the sliding cylinder. Under the action of the conical structure, the sliding cylinder moves in the direction of the molding cavity and presses against the inner wall of the positioning groove, completing the positioning of the sliding cylinder and preventing the sliding cylinder from moving in the opposite direction.

[0018] Optionally, the mold extraction mechanism includes two slide rails fixed on the main mold, the two slide rails are slidably connected with corresponding sliders, the slider is connected with a drawing module, the molding cavity is formed between the two drawing modules, the main mold, the auxiliary mold and the sliding cylinder, and the mold extraction mechanism also includes a sliding component that pushes the slider to slide on the slide rails.

[0019] By adopting the above technical solution, the setting of the die drawing mechanism is used for product molding on the one hand, and on the other hand, the multi-directional die drawing facilitates the removal of the product.

[0020] Optionally, the slider is provided with a through slot that passes through the slider, and the through slot is inclined. The sliding assembly includes a fixed sliding rod, and the sliding rod is passed through the through slot. When the main mold moves up and down, the sliding rod drives the slider to slide on the slide rail.

[0021] By adopting the above technical solution, the arrangement of the through groove and the sliding rod makes it easier for the slider to drive the drawing module to move, thereby facilitating the molding and removal of the product.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: There are two groups of molding cavities. The products are molded in the molding cavities. The driving component acts on the sliding cylinder to make the sliding cylinder move away from the molding cavity, thereby realizing core pulling. The driving component acts on the mold extraction mechanism and the sub-mold to make the sub-mold and the mold extraction mechanism move away from the molding cavity, thereby facilitating product removal and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0024] Figure 2 It is a schematic diagram for showing the connection structure of the die-pulling mechanism and the threaded core-pulling mechanism on the main mold.

[0025] Figure 3 It is a schematic diagram of the connection structure of the thread core pulling mechanism.

[0026] Figure 4 It is a schematic diagram of the connection structure of the sliding cylinder, the positioning block and the driving gear.

[0027] Figure 5 It is a schematic diagram of the structure of the driving gear.

[0028] Figure numerals: 1. main mold; 2. sub-mold; 3. fixed seat; 4. slide rail; 5. slider; 6. drawer module; 7. through groove; 8. sliding rod; 9. sliding cylinder; 10. positioning groove; 11. driving gear; 12. driving screw; 13. keyway; 14. key block; 15. clamping groove; 16. retaining ring; 17. positioning block; 18. tapered groove. DETAILED DESCRIPTION

[0029] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings.

[0030] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0031] The embodiment of the present application discloses a threaded core-pulling injection mold for a medical connector.

[0032] Reference Figure 1 and Figure 2 A threaded core-pulling injection mold for a medical connector comprises a main mold 1 and a sub-mold 2 detachably connected to the main mold 1, a mold pulling mechanism is arranged on the main mold 1, a fixing seat 3 is also connected to the main mold 1, a threaded core-pulling mechanism is arranged on the fixing seat 3, a molding cavity for forming a product is formed between the main mold 1, the sub-mold 2, the mold pulling mechanism and the threaded core-pulling mechanism, the molding cavity, the threaded core-pulling mechanism and the mold pulling mechanism are two groups, and two groups of products can be produced at the same time.

[0033] Reference Figure 2 and Figure 3 The die-drawing mechanism includes two slide rails 4 fixed on the main mold 1, and the two slide rails 4 are slidably connected with corresponding sliders 5, and the sliders 5 are connected with the drawing module 6. The molding cavity is formed between the two drawing modules 6, the main mold 1, the auxiliary mold 2 and the sliding cylinder 9. The die-drawing mechanism also includes a sliding assembly that pushes the slider 5 to slide on the slide rails 4. The slider 5 is provided with a through groove 7 that penetrates the slider 5, and the through groove 7 is inclined. The sliding assembly includes a fixed sliding rod 8, and the sliding rod 8 is inserted in the through groove 7. When the main mold 1 moves up and down, the slider 5 is driven to slide on the slide rail 4 under the action of the sliding rod 8, thereby controlling the movement direction of the drawing module 6.

[0034] Reference Figure 2 and Figure 3The thread core pulling mechanism includes a sliding cylinder 9 slidably arranged on the fixed seat 3, a positioning groove 10 is provided on the main mold 1, one end of the sliding cylinder 9 abuts on the inner wall of the positioning groove 10, and the molding cavity is formed between the main mold 1, the auxiliary mold 2, the mold pulling mechanism and the sliding cylinder 9. The sliding cylinder 9 is sleeved on the connecting column of the formed connector, and the end of the sliding cylinder 9 abuts on the end surface of the product cone. The fixed seat 3 is provided with a driving assembly for driving the sliding cylinder 9 to slide, and the driving assembly includes a driving gear 11 coaxially fixed outside the sliding cylinder 9, and a driving screw 12 is fixed on the fixed seat 3. The driving screw 12 is penetrated in the sliding cylinder 9 and is threadedly connected to the sliding sleeve. The driving mechanism also includes a driving member for rotating the driving gear 11, and the driving member includes a transmission gear rotatably connected to the fixed seat 3. The transmission gear is meshed with the two driving gears 11 at the same time and drives the two driving gears 11 to rotate. The fixed seat 3 is provided with a driving motor for driving the transmission gear to rotate. A driving spring is sleeved on the driving screw rod 12, and two ends of the driving spring are respectively abutted on the fixing seat 3 and the sliding cylinder 9 to eliminate the clearance error between the threads.

[0035] Reference Figure 3 and Figure 4 The driving gear 11 is sleeved on the outside of the sliding cylinder 9. The inner wall of the driving gear 11 and the outer wall of the sliding cylinder 9 are both provided with a key groove 13. The key groove 13 on the driving gear 11 passes through one end face along the axial direction of the driving gear 11, which is convenient for the installation of the driving gear 11 and the key block 14 on the sliding cylinder 9. The sliding cylinder 9 on both sides of the driving gear 11 is provided with a clamping groove 15 surrounding the sliding cylinder 9, and a clamping ring 16 is installed in the clamping groove 15 to prevent the driving gear 11 from moving axially.

[0036] Reference Figure 3 and Figure 4 The outer wall of the sliding cylinder 9 is provided with a conical structure, and a positioning block 17 for positioning the sliding cylinder 9 is installed on the fixed seat 3. The lower end surface of the positioning block 17 is provided with a conical groove 18 that fits with the outer wall of the sliding cylinder 9. The positioning block 17 moves in the direction of extruding the sliding cylinder 9. Under the action of the conical structure and the conical groove 18, the sliding cylinder 9 moves toward the molding cavity, so that the sliding cylinder 9 is pressed against the inner wall of the positioning groove 10, thereby realizing the positioning of the sliding cylinder 9 on the main mold 1.

[0037] The principle of the embodiment of the present application is as follows: two groups of molding cavities are provided, and the product is molded in the molding cavity. The sliding cylinder 9 is driven to rotate by the driving gear 11. Under the action of the driving screw 12, the sliding cylinder 9 moves in the direction away from the molding cavity, thereby realizing core pulling, acting on the mold extraction mechanism and the sub-mold 2, so that the sub-mold 2 and the mold extraction mechanism move in the direction away from the molding cavity, thereby facilitating product removal and improving production efficiency.

[0038] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A threaded core-pulling injection mold for a medical connector, comprising a main mold (1) and a sub-mold (2) connected to the main mold (1), wherein the main mold (1) and the sub-mold (2) are provided with a molding cavity for forming a desired product, and the main mold (1) is connected with an injection channel for injecting into the molding cavity, characterized in that: The main mold (1) is connected to a fixed seat (3), and a threaded core-pulling mechanism is arranged on the fixed seat (3). The threaded core-pulling mechanism includes a sliding cylinder (9) slidably arranged on the fixed seat (3). A positioning groove (10) for clamping the sliding cylinder (9) is opened on the main mold (1), and the end of the sliding cylinder (9) close to the main mold (1) is pressed against the inner wall of the positioning groove (10). The main mold (1) is provided with a mold-pulling mechanism, and the molding cavity is arranged between the mold-pulling mechanism, the main mold (1), the auxiliary mold (2) and the sliding cylinder (9). The sliding cylinder (9) is sleeved on the connecting column of the molding connector, and the sliding cylinder The end of the mold (9) abuts against the end surface of the product cone, and the fixed seat (3) is provided with a driving component that drives the sliding cylinder (9) to move and facilitates mold extraction; the driving component includes a driving gear (11) coaxially fixed to the outside of the sliding cylinder (9), and the fixed seat (3) is fixed with a driving screw (12) that penetrates the sliding cylinder (9), and the driving screw (12) is threadedly connected to the sliding cylinder (9), and the driving mechanism also includes a driving member that drives the driving gear (11) to rotate; the molding cavity, the threaded core pulling mechanism and the mold extraction mechanism are two groups, and the driving member includes a driving gear (11) that is rotatably connected to the fixed seat (3) and a transmission gear that drives two driving gears (11) to rotate at the same time; the fixed seat (3) is provided with a driving motor that drives the transmission gear to rotate; the driving gear (11) is sleeved outside the sliding cylinder (9); the inner wall of the driving gear (11) and the outer wall of the sliding cylinder (9) are both provided with a key groove (13); a key block (14) is installed in the key groove (13) to make the sliding cylinder (9) and the driving gear (11) rotate synchronously; the sliding cylinder (9) on both sides of the driving gear (11) is provided with a clamping groove (15); a clamping member (15) is installed in the clamping groove (15) to prevent the driving gear (11) from rotating along the axis A retaining ring (16) is provided on the fixed seat (3) to position the sliding cylinder (9) and to make the end of the sliding cylinder (9) abut against the inner wall of the positioning groove (10); the outer wall of the sliding cylinder (9) is provided with a conical structure, and the positioning block (17) is provided with a conical groove (18) that fits with the outer wall of the sliding cylinder (9). When the positioning block (17) slides toward the sliding cylinder (9), it pushes the sliding cylinder (9) to abut against the inner wall of the positioning groove (10); a driving spring is sleeved on the driving screw (12), and the two ends of the driving spring are respectively abutted on the fixed seat (3) and the sliding cylinder (9).

2. The threaded core-pulling injection mold of the medical connector according to claim 1, characterized in that: The die-pulling mechanism comprises two slide rails (4) fixed on the main mold (1), the two slide rails (4) are slidably connected with corresponding sliders (5), the sliders (5) are connected with a drawer module (6), the molding cavity is formed between the two drawer modules (6), the main mold (1), the auxiliary mold (2) and the sliding cylinder (9), and the die-pulling mechanism also comprises a sliding component for pushing the sliders (5) to slide on the slide rails (4).

3. The threaded core-pulling injection mold of the medical connector according to claim 2, characterized in that: The slider (5) is provided with a through slot (7) penetrating the slider (5), and the through slot (7) is arranged in an inclined manner. The sliding assembly comprises a fixed sliding rod (8), and the sliding rod (8) is arranged in the through slot (7). When the main mold (1) moves up and down, the sliding rod (8) drives the slider (5) to slide on the slide rail (4).

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