A mold structure for a circular arc pipe product

Abstract

This utility model relates to a mold structure for arc-shaped pipe products, comprising a front mold and a rear mold that cooperate with each other. The rear mold includes a B plate, a hydraulic cylinder for providing power, a first sliding mechanism for transmitting power, a connecting rod for power conversion, a second sliding mechanism for performing the core-pulling action, a sliding mechanism pressure bar for auxiliary guidance, and a swing rod. This utility model solves the problem that traditional straight sliding mechanisms cannot be adapted to the core-pulling and demolding of arc-shaped pipe products.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a mold structure for arc pipe products. Background Technology

[0002] In the field of pipe product mold manufacturing, for conventional straight sections or simple structure pipe products, the industry generally adopts multi-directional sliding (slider) core-pulling demolding technology. By controlling the movement of the sliding part along a straight trajectory, the product can be separated from the mold cavity. This technology has a mature application system. However, with the diversification of pipe product application scenarios, the demand for pipes with arc structures is increasing. Conventional straight-line sliding demolding technology cannot adapt to arc curved surface structures, making mold demolding of such products a technical bottleneck in the industry.

[0003] There is no dedicated solution in the industry for demolding core-pulling of curved pipe products. The existing approach is to use the multi-directional linear slide demolding method of conventional pipe products. This involves setting multiple linear motion slides in different directions of the mold to try to fit the curved surface and achieve demolding. However, since the movement trajectory of the slides is only a straight line, it cannot completely match the curved surface.

[0004] Therefore, the existing injection mold structure has the following shortcomings:

[0005] (1) Insufficient demolding feasibility: Conventional straight slides cannot move along the trajectory and cannot avoid the arc protrusion of the arc pipe product, resulting in the product being stuck in the mold cavity after molding and unable to be demolded smoothly;

[0006] (2) High product quality risk: Forcibly attempting demolding can easily cause scratches and deformation of the product's curved parts, or even damage to the mold cavity, seriously affecting the product qualification rate and mold lifespan;

[0007] (3) Due to the difficulty of demolding, manual assistance is required, which makes it impossible to achieve automated mass production and greatly reduces production efficiency. Utility Model Content

[0008] This utility model provides a mold structure for arc-shaped pipe products, which enables the slide to move along the arc trajectory adapted to the arc-shaped pipe product, thereby solving the problems existing in related technologies. The technical solution is as follows:

[0009] The mold structure for arc pipe products provided in this embodiment of the utility model includes a B plate, a hydraulic cylinder for providing power, a first sliding position for transmitting power, a connecting rod for power conversion, a second sliding position for performing core pulling action, a sliding pressure bar for auxiliary guidance, and a swing rod.

[0010] The rear mold has an arc-shaped guide groove defining the second sliding position; the telescopic end of the hydraulic cylinder is fixed to the first sliding position and is used to drive the first sliding position to move linearly along a preset straight track; the first and second sliding positions are hinged by the connecting rod to transmit the power of the first sliding position to the second sliding position; the sliding position pressure strip is fixed to the B plate in the arc-shaped guide groove and slides with the side end of the second sliding position; the swing rod is hinged to the sliding position pressure strip and the second sliding position; the second sliding position is slidably disposed in the arc-shaped guide groove and can slide away from the arc-shaped pipe product along the arc-shaped guide groove under the power transmission of the first sliding position.

[0011] In one embodiment, the rear mold further includes a male mold core, the arc guide groove is formed together on the B plate and the male mold core, and the second slide is embedded in the male mold core at the end away from the connecting rod.

[0012] In one embodiment, the rear mold further includes a fixing block fixed to the B plate, the linear track is formed on the fixing block, and the hydraulic cylinder is fixed to the fixing top block.

[0013] In one embodiment, the radius of the arc guide groove is adapted to the radius of the arc pipe product.

[0014] In one embodiment, the row positioning strip is made of bronze alloy.

[0015] In one embodiment, both the first and second rows have clearance grooves, and the connecting rod is hinged to the first and second rows in the clearance grooves.

[0016] Implementing the above-described embodiments of the present invention will have at least the following beneficial effects:

[0017] By setting up a hydraulic cylinder to drive the first slide, which in turn drives the second slide via a connecting rod for core pulling and demolding, the second slide is positioned away from the curved pipe product within the arc-shaped guide groove. This provides a coordinated operation between the hydraulic cylinder, the first slide, and the connecting rod, converting the linear power of the hydraulic cylinder into the arc motion of the second slide, thus solving the problem that traditional linear slides cannot adapt to the core pulling and demolding of curved pipe products.

[0018] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the overall structure of a mold structure for a circular arc pipe product provided in this embodiment of the present invention;

[0021] Figure 2 An isometric view of a rear mold provided for an embodiment of this utility model;

[0022] Figure 3 A top view of a rear mold provided in an embodiment of this utility model;

[0023] Figure 4 A schematic diagram illustrating the fit between a second row position and an arc-shaped pipe product, provided for an embodiment of this utility model;

[0024] Figure 5 An assembly diagram of a B plate and a rear mold core provided for an embodiment of this utility model;

[0025] Figure 6 A schematic diagram of the motion trajectory of a second row core pulling according to an embodiment of this utility model;

[0026] Figure 7 This is a schematic diagram of the overall structure of the second row position provided in an embodiment of the present utility model.

[0027] Among them: 100, front mold;

[0028] 200, Rear mold; 210, B plate; 220, Hydraulic cylinder; 230, First slide; 240, Connecting rod; 250, Second slide; 260, Slide pressure bar; 270, Rocker arm; 280, Male mold core; 290, Fixing block;

[0029] 20A, Circular arc guide groove; 20B, Linear track; 20C, Clearance groove;

[0030] 300. Arc-shaped pipe products. Detailed Implementation

[0031] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0032] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] The following will be combined with the appendix Figure 1-7 The technical solution provided by this utility model will be described in detail.

[0035] The mold structure for the arc pipe product 300 provided in this embodiment of the utility model includes a front mold 100 and a rear mold 200 that cooperate with each other. The rear mold 200 includes a B plate 210, a hydraulic cylinder 220 that provides power, a first sliding position 230 for transmitting power, a connecting rod 240 for power conversion, a second sliding position 250 for performing core pulling action, a sliding pressure bar 260 for auxiliary guidance, and a swing rod 270.

[0036] The rear mold 200 has an arc-shaped guide groove 20A that defines the second slide position 250; the telescopic end of the hydraulic cylinder 220 is fixed to the first slide position 230 and is used to drive the first slide position 230 to move linearly along the preset linear track 20B; the first and second slide positions 250 are hinged by a connecting rod 240 to transmit the power of the first slide position 230 to the second slide position 250; the slide pressure strip 260 is fixed to the B plate 210 in the arc-shaped guide groove 20A and slides in cooperation with the side end of the second slide position 250; the swing rod 270 is hinged to the slide pressure strip 260 and the second slide position 250; the second slide position 250 is slidably disposed in the arc-shaped guide groove 20A and can slide away from the arc-shaped pipe product 300 along the arc-shaped guide groove 20A under the power transmission of the first slide position 230.

[0037] This specific embodiment does not provide the complete structure of the mold, but only a partial structure, to illustrate the difference from the core-pulling and demolding of traditional straight or simple pipe products.

[0038] As described above, for the demolding of the arc-shaped pipe product 300, the hydraulic cylinder 220 drives the first slide 230 to drive the second slide 250 for core pulling and demolding via the connecting rod 240, so that the second slide 250 is moved away from the arc-shaped pipe product 300 in the arc-shaped guide groove 20A. In this way, the hydraulic cylinder 220, the first slide 230, and the connecting rod 240 are linked together to convert the linear power of the hydraulic cylinder 220 into the arc motion of the second slide 250, solving the problem that traditional linear slides cannot adapt to the core pulling and demolding of the arc-shaped pipe product 300.

[0039] like Figure 2 , 3 As shown in Figure 5, in one embodiment, the rear mold 200 further includes a male mold core 280, and the arc guide groove 20A is formed together on the B plate 210 and the male mold core 280, and the second slide position 250 is embedded in the male mold core 280 at the end away from the connecting rod 240.

[0040] A circular arc guide groove 20A is formed on plate B 210 and male mold core 280, and one end of the second slide 250 is embedded in male mold core 280, which enhances the fit between the core pulling action and the circular arc pipe product 300 and reduces the risk of product deformation.

[0041] like Figure 1-3 As shown, in one embodiment, the rear mold 200 further includes a fixing block 290 fixed to the B plate 210, a linear track 20B formed on the fixing block 290, and a hydraulic cylinder 220 fixed to the fixing top block.

[0042] The fixed block 290 facilitates the installation of the hydraulic cylinder 220 and improves the movement stability of the first moving position 230.

[0043] In one embodiment, the arc radius of the arc guide groove 20A is adapted to the arc radius of the arc pipe product 300.

[0044] By matching the radius of the arc guide groove 20A with the product radius, the core-pulling trajectory of the second row 250 is effectively ensured to fit the arc structure of the product.

[0045] In one embodiment, the positioning strip 260 is made of bronze alloy.

[0046] like Figure 4 As shown, in one embodiment, both the first and second row positions 250 have clearance grooves 20C, and the connecting rod 240 is hinged to the first and second row positions 250 in the clearance grooves 20C.

[0047] The clearance groove 20C is used to avoid interference with the motion changes of the connecting rod 240.

[0048] Figure 6As shown in the figure, the dashed line at point AA represents the movement trajectory of the second row position 250 in the circular arc guide groove 20A.

[0049] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A mold structure for arc-shaped pipe products, comprising a front mold and a rear mold that cooperate with each other, characterized in that, The rear mold includes a B plate, a hydraulic cylinder that provides power, a first sliding position for transmitting power, a connecting rod for power conversion, a second sliding position for performing the core-pulling action, a sliding pressure bar for auxiliary guidance, and a swing rod; The rear mold has an arc-shaped guide groove defining the second sliding position; the telescopic end of the hydraulic cylinder is fixed to the first sliding position and is used to drive the first sliding position to move linearly along a preset straight track; the first and second sliding positions are hinged by the connecting rod to transmit the power of the first sliding position to the second sliding position; the sliding position pressure strip is fixed to the B plate in the arc-shaped guide groove and slides with the side end of the second sliding position; the swing rod is hinged to the sliding position pressure strip and the second sliding position; the second sliding position is slidably disposed in the arc-shaped guide groove and can slide away from the arc-shaped pipe product along the arc-shaped guide groove under the power transmission of the first sliding position.

2. The mold structure for arc-shaped pipe products according to claim 1, characterized in that: The rear mold also includes a male mold core, and the arc guide groove is formed together on the B plate and the male mold core, and the second slide is embedded in the male mold core at the end away from the connecting rod.

3. The mold structure for arc-shaped pipe products according to claim 1, characterized in that: The rear mold also includes a fixing block fixed to the B plate, the linear track is formed on the fixing block, and the hydraulic cylinder is fixed to the fixing block.

4. The mold structure for arc-shaped pipe products according to claim 1, characterized in that: The radius of the arc guide groove is adapted to the radius of the arc pipe product.

5. The mold structure for arc-shaped pipe products according to claim 1, characterized in that: The row positioning strip is made of bronze alloy.

6. The mold structure for arc-shaped pipe products according to claim 1, characterized in that: Both the first and second rows have clearance slots, and the connecting rod is hinged to the first and second rows in the clearance slots.

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