Mould structure with partial internal threads for ground side pipeline

Abstract

The utility model discloses a mold structure with partial internal threads for a ground side pipeline. The mold structure comprises a front mold core, a rear mold core and a rear mold core, wherein the side edge of the front mold core is fixedly connected with a rack; the front mold core is arranged on the upper portion of the mold body, the rear mold core is arranged below the front mold core, the top of the rear mold core is symmetrically connected with sliding block sets in a sliding mode, the sliding block sets are used for demolding and exhausting buckling positions on the outer side of a product, and a driving part for driving the sliding block sets is installed on the outer side of the rear mold core. A positioning block at the bottom of the front mold core is matched with a positioning hole in the top of a sliding block, and a guide plate and a screw rod are used for auxiliary positioning, so that the stability and accuracy during mold closing are ensured, the reliability of the mold is improved, and the service life of the mold is prolonged; through the arrangement of reducing glue and enlarging steps on the straight section of the inner hole, directly and integrally rotating and rolling the thread and then pulling the core, and forming a concave buckle position on the slide, the structure and the appearance of the product are not influenced, the processing difficulty and the processing cost of the mold are reduced, and meanwhile, the strength of the mold and the smoothness of injection molding production are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a mold structure of a ground-side pipeline with partial internal threads. Background Art

[0002] In the mold processing industry, for products with left and right concave buckles and a threaded inner hole on the top side, since the inner thread is only on the inner side, the traditional processing method is to make two slides on the inner hole (one straight sliding and one rotary demolding). The mold structure is complex and the space is small, which will cause risks such as poor mold strength and easy deformation. Utility Model Content

[0003] The purpose of the utility model is to provide a mold structure with a partial internal thread of a ground-side pipeline, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a mold structure for a ground-side pipeline with a partial internal thread, comprising:

[0005] A front mold core with a rack fixed to the side;

[0006] The rear mold core is placed below the front mold core. The top of the rear mold core is symmetrically slidably connected to a slider group for product outer buckle demoulding and exhaust. The outer side of the rear mold core is installed with a driving part for driving the slider group.

[0007] The tapping assembly is placed on one side of the rear mold core. The tapping assembly includes a slider three and a tooth rod threadedly connected to one side of the slider three. The outer side of the tooth rod is provided with a gear group that cooperates with the rack for transmission. When the front mold core and the rear mold core are separated, the rack is pulled to drive the gear group to rotate the tooth rod, so that the tooth rod is separated from the tapping position.

[0008] Preferably, the slider group includes slider one and slider two slidingly arranged on the top of the rear mold core, and the driving part includes two No. 1 oil cylinders symmetrically fixed on the outside of the rear mold core, and the output ends of the two No. 1 oil cylinders are respectively connected to the corresponding slider one and slider two.

[0009] Preferably, a positioning hole is provided on the top of the slider 1 and the top of the slider 2, and a positioning block that cooperates with the positioning hole is provided on the bottom of the front mold core.

[0010] Preferably, the tapping assembly further comprises a No. 2 oil cylinder fixedly connected to the outer side of the rear mold core, the output end of the No. 2 oil cylinder is fixedly connected with a slide groove, and the slide groove is slidably connected to the rear mold core.

[0011] Preferably, the slider three is fixedly connected to the end of the slide groove, and a threaded hole that cooperates with the tooth rod is provided in the middle of the slider three.

[0012] Preferably, the gear set includes a driven gear fixed to the outside of the tooth rod, the bottom of the driven gear is threadedly connected to a coupling gear, the coupling gear is meshed with the rack, and the coupling gear is rotatably connected to the slide groove.

[0013] Preferably, the bottom of the rear mold core is fixedly connected to a base, the middle of the base is slidably connected to a push plate, the top of the push plate is fixedly connected to a dome needle and a spring, the dome needle passes through the middle of the rear mold core, the middle of the rear mold core is slidably connected to a push block, and the dome needle is fixed to the push block.

[0014] Preferably, positioning rods are fixed to the four corners of the top of the rear mold core, and holes that cooperate with the positioning rods are provided at the bottom of the front mold core.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: in the mold structure, the slider group symmetrically slidably connected at the top of the rear mold core not only helps to demold the outer buckle position of the product, but also effectively vents the air, ensuring the molding quality of the product; the setting of the tapping assembly enables the rack to drive the gear group to rotate the tooth rod when the mold is separated, thereby realizing the precise separation of the tooth rod and the tapping position, avoiding product damage and improving production efficiency; the No. 1 oil cylinder drives slider one and slider two to reset, and the positioning block at the bottom of the front mold core cooperates with the positioning hole at the top of the slider, as well as the auxiliary positioning of the guide plate and the screw, to ensure the stability and accuracy during mold closing, and improve the reliability and service life of the mold; by reducing the glue and increasing the step in the straight section of the inner hole, directly rotating the whole body to roll the threads and then pulling the core, and setting the concave buckle position of the row position, it is ensured that the product structure and appearance are not affected, and the mold processing difficulty and cost are reduced, while ensuring the mold strength and the smoothness of injection molding production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic structural diagram of the front mold core of the utility model;

[0018] Figure 3 This is a schematic structural diagram of the rear mold core of the utility model;

[0019] Figure 4 This is an enlarged view of point A of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the coupling gear of the utility model;

[0021] Figure 6 This is a structural diagram of a slider 1 of the utility model;

[0022] Figure 7 It is a structural diagram of the product of this utility model.

[0023] In the figure: 1. Front mold core; 2. Rack; 3. Gear set; 4. Slider three; 5. Slider one; 6. Slider two; 7. Push block; 8. Rear mold core; 9. Dome pin; 10. Oil cylinder No. 1; 11. Base; 12. Push plate; 13. Spring; 14. Oil cylinder No. 2; 15. Positioning block; 16. Positioning rod; 17. Positioning hole; 18. Driven gear; 19. Coupling gear; 20. Tooth rod; 21. Slide groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1 、 2 As shown in Figures 3, 4, 5, 6 and 7, the utility model provides a technical solution: a mold structure with a partial internal thread on the ground side pipe, comprising: a front mold core 1 with a rack 2 fixed on the side; a rear mold core 8 is placed below the front mold core 1, and the top of the rear mold core 8 is symmetrically slidably connected with a slider group for demolding and venting the outer side of the product, and a driving part for driving the slider group is installed on the outer side of the rear mold core 8; a tapping assembly is placed on one side of the rear mold core 8, and the tapping assembly includes a slider three 4 and a tooth rod 20 threadedly connected to one side of the slider three 4, and a gear group 3 that cooperates with the rack 2 for transmission is provided on the outer side of the tooth rod 20. When the front mold core 1 and the rear mold core 8 are separated, the rack 2 is pulled to drive the gear group 3 to rotate the tooth rod 20, so that the tooth rod 20 is disengaged from the tapping position.

[0026] It should be noted that before the mold of the utility model is closed, the dome pin 9 is first reset to the bottom, and at the same time, the push block 7 is reset, and then the slider 3 4, the slider 1 5 and the slider 2 6 are slid inward and reset through the driving part. After reaching the position, the front and rear molds are closed, and the rack 2 drives the gear set 3 to move the tooth rod into place, and finally the injection molding machine starts to shoot glue for production; after the mold injection is completed, the mold is opened, and the front mold core 1 and the rear mold core 8 are opened. During this period, the front mold core 1 pulls the rack 2 to drive the gear set 3 to rotate, so that the tooth rod 20 is separated from the tapping Tooth position; the driving part pulls the core to drive the slider three 4, slider one 5 and slider two 6 to slide outward to disengage from the product buckle position, and the ejector pushes the push plate 12 to drive the dome pin 9 and the push block 7 to eject the product from the rear mold core 8; manually cut off the side glue inlet, and reduce the glue in the straight section of the inner hole to increase a small step, and directly rotate the whole body to roll the teeth and then pull the core, and make the left and right sides into a concave buckle position, first of all, ensure that the mold strength is guaranteed without affecting the product structure and appearance, and simplify the processing volume and injection molding production to be smooth and save costs.

[0027] See also Figure 3 、 6 As shown, the slider group includes a slider 1 5 and a slider 2 6 which are slidably arranged on the top of the rear mold core 8, and the driving part includes two No. 1 oil cylinders 10 which are symmetrically fixed to the outside of the rear mold core 8. The output ends of the two No. 1 oil cylinders 10 are respectively connected to the corresponding slider 1 5 and slider 2 6. The top of slider 1 5 and the top of slider 2 6 are both provided with positioning holes 17, and the bottom of the front mold core 1 is provided with a positioning block 15 which cooperates with the positioning hole 17.

[0028] It should be noted that, before closing the mold, the No. 1 oil cylinder 10 of the present invention drives the slider 1 5 and the slider 2 6 to move toward the middle of the rear mold core 8, so that the slider 1 5 and the slider 2 6 are combined together. When closing the mold, the front mold core 1 cooperates with the rear mold core 8 from top to bottom, and the positioning block 15 is inserted into the corresponding positioning hole 17. Since the positioning block 15 is fixed to the front mold core 1, under the positioning of the positioning block 15 and the positioning hole 17, the slider 1 5 and the slider 2 6 are locked and fixed on the top of the rear mold core 8, thereby making the molding cavity more stable.

[0029] See also Figure 3 、 4 As shown in Figures 5 and 6, the tapping assembly also includes a No. 2 oil cylinder 14 fixedly connected to the outer side of the rear mold core 8, the output end of the No. 2 oil cylinder 14 is fixedly connected with a slide groove 21, the slide groove 21 is slidably connected to the rear mold core 8, the slider three 4 is fixedly connected to the end of the slide groove 21, and the middle part of the slider three 4 is provided with a threaded hole that cooperates with the tooth rod 20. The gear set 3 includes a driven gear 18 fixedly connected to the outer side of the tooth rod 20, and the bottom of the driven gear 18 is threadedly connected with a coupling gear 19, the coupling gear 19 is meshed with the rack 2, and the coupling gear 19 is rotatably connected to the slide groove 21.

[0030] It should be noted that the rack 2 of the present invention is meshed with the coupling gear 19. When the mold is separated, the rack 2 drives the coupling gear 19 to rotate, the coupling gear 19 drives the driven gear 18 to rotate, and the driven gear 18 drives the tooth rod 20 to rotate. The end of the tooth rod 20 is threadedly connected to the slider three 4. Under the action of the thread, the tooth rod 20 moves toward the inside of the slider three 4, thereby separating the tooth rod 20 from the tapping position. Then, the No. 2 oil cylinder 14 drives the tooth rod 20 to slide on the top of the rear mold core 8 through the slider three 4, thereby removing the teeth and pulling the tooth rod 20 out of the inner hole position.

[0031] See also Figure 1 、 3 As shown, the bottom of the rear mold core 8 is fixedly connected to the base 11, the middle of the base 11 is slidably connected to the push plate 12, the top of the push plate 12 is fixedly connected to the dome needle 9 and the spring 13, and the dome needle 9 passes through the middle of the rear mold core 8.

[0032] It should be noted that after the product is formed, the push plate 12 is pushed by the ejector rod to drive the dome pin 9 to move. Part of the ejector pin passes through the middle of the rear mold core 8, and the other ejector pin lifts the push block 7 to eject the product. Among them, a section of the top of the ejector block is an inclined surface, which is used as a guide for the slider when the mold is closed. When the ejector rod is withdrawn, the spring 13 drives the dome pin 9 and the bottom of the push block 7 to reset through the push plate 12.

[0033] See also Figure 2 、 3 As shown, the middle part of the rear mold core 8 is slidably connected to the push block 7, the dome pin 9 is fixedly connected to the push block 7, the four corners of the top of the rear mold core 8 are fixedly connected to the positioning rods 16, and the bottom of the front mold core 1 is provided with a hole that cooperates with the positioning rods 16.

[0034] It should be noted that the outer side of the front mold core 1 of the utility model is fixed with four guide plates with slide grooves in the middle, and the middle of the rear mold core 8 is provided with a screw that cooperates with the slide groove. The guide plates can ensure the accurate correspondence of various structures when the mold is closed, and the positioning rod 16 can be quickly connected with the hole at the bottom of the front mold core 1 to ensure the accuracy of the module when the mold is closed.

[0035] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0037] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mold structure for a ground-side pipe with a partial internal thread, characterized by: include: A front mold core (1) with a rack (2) fixedly connected to the side; A rear mold core (8) is placed below the front mold core (1), and a slider group for buckling, demoulding and exhausting the product outside is symmetrically slidably connected to the top of the rear mold core (8), and a driving part for driving the slider group is installed on the outside of the rear mold core (8); A tapping assembly is placed on one side of the rear mold core (8), and the tapping assembly includes a slider three (4) and a tooth rod (20) threadedly connected to one side of the slider three (4). The outer side of the tooth rod (20) is provided with a gear group (3) that cooperates with the rack (2) for transmission. When the front mold core (1) and the rear mold core (8) are separated, the rack (2) is pulled to drive the gear group (3) to rotate the tooth rod (20), so that the tooth rod (20) is separated from the tapping position.

2. The mold structure for a ground-side pipeline with partial internal threads according to claim 1, characterized in that: The slider group includes a slider one (5) and a slider two (6) which are slidably arranged on the top of the rear mold core (8), and the driving part includes two No. 1 oil cylinders (10) symmetrically fixed on the outer side of the rear mold core (8), and the output ends of the two No. 1 oil cylinders (10) are respectively connected to the corresponding slider one (5) and slider two (6).

3. The mold structure for a ground-side pipeline with partial internal threads according to claim 2, characterized in that: The top of the slider 1 (5) and the top of the slider 2 (6) are both provided with positioning holes (17), and the bottom of the front mold core (1) is provided with a positioning block (15) that matches the positioning hole (17).

4. The mold structure for a ground-side pipeline with partial internal threads according to claim 1, characterized in that: The tapping assembly further comprises a No. 2 oil cylinder (14) fixedly connected to the outside of the rear mold core (8); an output end of the No. 2 oil cylinder (14) is fixedly connected with a slide groove (21); and the slide groove (21) is slidably connected to the rear mold core (8).

5. The mold structure for a ground-side pipeline with partial internal threads according to claim 4, characterized in that: The slider three (4) is fixedly connected to the end of the slide groove (21), and a threaded hole matching the tooth rod (20) is provided in the middle of the slider three (4).

6. The mold structure for a ground-side pipeline with partial internal threads according to claim 1, characterized in that: The gear set (3) includes a driven gear (18) fixed to the outside of the tooth rod (20), the bottom of the driven gear (18) is threadedly connected to a coupling gear (19), the coupling gear (19) is meshed with the rack (2), and the coupling gear (19) is rotationally connected to the slide groove (21).

7. The mold structure for a ground-side pipeline with partial internal threads according to claim 1, characterized in that: The bottom of the rear mold core (8) is fixedly connected to a base (11), the middle of the base (11) is slidably connected to a push plate (12), the top of the push plate (12) is fixedly connected to a dome needle (9) and a spring (13), the dome needle (9) passes through the middle of the rear mold core (8), the middle of the rear mold core (8) is slidably connected to a push block (7), and the dome needle (9) is fixed to the push block (7).

8. The mold structure for a ground-side pipeline with partial internal threads according to claim 1, characterized in that: The four corners of the top of the rear mold core (8) are fixedly connected with positioning rods (16), and the bottom of the front mold core (1) is provided with holes that match the positioning rods (16).

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