Blow molding die blank for canoeing

Abstract

The canoeing blow molding mold blank comprises a first mold plate, a second mold plate and a feeding mechanism, a male mold used for canoeing cockpit forming is arranged in a forming cavity of the first mold plate, the first mold plate is provided with a first driving part and an ejection mechanism, the second mold plate is provided with a second driving part, and the first driving part and the ejection mechanism are arranged on the first mold plate. The first driving part and the second driving part enable the first mold plate and the second mold plate to be far away from or close to each other, the ejection mechanism is matched with the male mold in an inserted mode, an insertion groove matched with the ejection mechanism is formed in the inner side face of the male mold, and when the mold is closed, the inner end face of the ejection mechanism is aligned with the inner side face of the male mold. And when the mold is opened, the ejection mechanism extends out of the slot to eject the product. The ejection mechanism is simple in structure, a power assembly does not need to be additionally arranged, elastic assemblies such as a spring do not need to be arranged for reset ejection, the actual demolding position is flexible, and simple adjustment can be conducted according to different products.

Description

Technical Field

[0001] The present application relates to the technical field of kayak manufacturing, and in particular to a kayak blow molding mold blank. Background Art

[0002] Most kayaks are produced by blow molding with a hollow blow molding machine. Basically, the production process uses resin as the raw material and PE resin is used to extrude and blow mold plastic embryos. The general process is to mix the plastics together and stir them evenly, put them into the plastic extruder for plasticization and melting, extrude the tubular parison from the molding mold, and then use the feeding mechanism to transfer the blank to the molding cavity of the blow molding mold, blow in compressed air, blow up the parison, and cool it to shape.

[0003] Since kayaks are large in size, the volume of their blow molding molds is generally large as well. In existing kayak blow molding molds, the product is generally removed from the mold by opening two templates when opening the mold and pulling the finished product at the top of the feeding mechanism. Due to the material of the kayak, the product is easy to adhere to the mold (especially the male mold) during removal. At this time, manual assistance is required to pull the product out of the mold so that subsequent operations can be carried out, which is rather troublesome. Summary of the invention

[0004] The purpose of the present application is to provide a kayak blow mold that is easy to demould.

[0005] To achieve the above purpose, the technical solution adopted in the present application is: a kayak blow molding mold blank, including a first template and a second template slidingly arranged in the horizontal direction, and a feeding mechanism arranged above the two, the molding cavity of the first template has a punch for molding a kayak cockpit, the first template is provided with a first driving part and an ejection mechanism, the second template is provided with a second driving part, the first driving part and the second driving part make the first template and the second template move away from / close to each other, the ejection mechanism is plugged into the punch, and a slot that fits the ejection mechanism is formed on the inner side surface of the punch. When the mold is closed, the inner end surface of the ejection mechanism and the inner side surface of the punch are aligned to close the inner side of the slot of the punch. When the mold is opened, the first driving part and the second driving part drive the first template and the second template to move away from each other, and the ejection mechanism extends out of the slot to eject the product.

[0006] As a preference, the mold blank further comprises a base frame, and the base frame comprises a guide portion for limiting the sliding of the first template and the second template.

[0007] As a preferred embodiment, the mold blank further comprises a frame and a mold base, wherein the mold base and the frame are both fixedly mounted on the base frame, and the mold base comprises a receiving groove for accommodating the sliding of the first mold plate.

[0008] Preferably, the first template is provided with baffles extending to both outer ends thereof, the second driving part is arranged between the frame and the baffles, and the second driving part passes through the mold frame, and the first driving part extends from the accommodating groove and is connected to the first template.

[0009] As a preference, a positioning structure is provided on the baffle, and a guiding structure corresponding to the positioning structure is provided on the first template, and the positioning structure and the guiding structure are combined to limit position when the mold is closed.

[0010] As a preferred embodiment, it also includes a loading mechanism, which lifts the blank and transfers it between the first template and the second template. The blank body includes a blank connecting part and a blank body. During blow molding, the first template and the second template clamp the blank body into the molding cavity for blow molding.

[0011] Preferably, one end of the guide structure close to the first template extends out of the first template to prevent the blank body from moving over the guide structure when loading.

[0012] As a preference, the guide structure comprises a concave portion, the positioning structure comprises a convex portion corresponding to the concave portion, and the concave portion and the convex portion are engaged in a concave-convex plug-in fit before mold closing is completed.

[0013] The first driving part is fixedly mounted on the frame, and a driving end of the first driving part passes through the accommodating groove and is fixedly connected to the first template.

[0014] As a preference, the installation position of the second driving part is close to the bottom of the molding cavity.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] The ejection mechanism has a simple structure and does not require additional power components or elastic components such as springs for reset and ejection. The actual demoulding position is relatively flexible and can be easily adjusted according to different products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a top view of the utility model.

[0019] Figure 3 It is a structural schematic diagram of the utility model when it is equipped with a feeding mechanism.

[0020] Figure 4 It is a schematic diagram of the ejection mechanism in two situations.

[0021] In the figure: 1. frame; 2. mold frame; 3. first template; 4. second template; 5. molding cavity; 6. positioning structure; 7. bottom plate; 8. guide part; 9. first driving part; 10. second driving part; 11. feeding mechanism; 12. blank connecting part; 13. blank body; 14. ejection mechanism. DETAILED DESCRIPTION

[0022] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application 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 cannot be understood as limiting the specific scope of protection of the present application.

[0024] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0025] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0026] Example:

[0027] Reference Figure 1-3As shown, this embodiment proposes a kayak blow molding mold blank, which mainly includes a first template 3 and a second template 4 slidingly arranged in the horizontal direction, and a feeding mechanism 11 arranged above the two. The molding cavity 5 of the first template 3 has a punch for molding a kayak cockpit. The first template 3 is provided with a first driving part 9 and an ejection mechanism 14, and the second template 4 is provided with a second driving part 10. The first driving part 9 and the second driving part 10 make the first template 3 and the second template 4 move away from / close to each other. The ejection mechanism 14 is plugged and matched with the punch, and a slot that fits the ejection mechanism 14 is formed on the inner side of the punch. When the mold is closed, the inner end surface of the ejection mechanism 14 and the inner side surface of the punch are aligned to close the inner side of the punch slot, as shown in FIG. Figure 4 (a); when the mold is opened, the first driving unit 9 and the second driving unit 10 drive the first template 3 and the second template 4 away from each other, and at the same time, the ejection mechanism 14 extends out of the slot to eject the product, such as Figure 4 In this embodiment, the initial state is the mold opening state. Figure 1 As shown, the first mold plate 3 and the second mold plate 4 are separated, and the ejection mechanism 14 is now extended out of the punch. As the mold is closed, the first mold plate 3 moves toward Figure 1 The protruding part of the ejection mechanism 14 gradually shortens until the inner end face of the ejection mechanism 14 and the inner side face of the punch are aligned. At this time, the punch has a complete molding cavity 5, the ejection mechanism 14 does not protrude, and the end face of the ejection mechanism 14 is used as a part of the wall surface of the molding cavity 5. After blow molding, the mold is opened. At this time, the first template 3 faces Figure 1 The ejection mechanism 14 slowly extends out of the slot, thereby ejecting the product in the molding cavity 5, and completing automatic demoulding. Different from the prior art, the ejection mechanism 14 has a simple structure, and does not require an additional power component, nor does it require an elastic component such as a spring to reset and eject, and the actual demoulding position is relatively flexible and can be simply adjusted according to different products.

[0028] The mold base of this embodiment also includes a base frame, which includes a guide portion 8 for limiting the sliding of the first template 3 and the second template 4. The guide portion 8 is as shown in FIG. Figure 1 The mold base also includes a frame 1 and a mold frame 2. The mold frame 2 and the frame 1 are fixedly mounted on the bottom frame. The mold frame 2 includes a receiving groove for accommodating the sliding of the first mold plate 3. Figure 1 The overall mold structure shown.

[0029] In order to facilitate the arrangement of the driving part in this embodiment, baffles are extended to the outer ends of both sides of the first template 3, and the second driving part 10 is arranged between the frame 1 and the baffles, and the second driving part 10 passes through the mold frame 2, and the first driving part 9 extends from the receiving groove and is connected to the first template 3. Figure 1As shown, the first driving part 9 is arranged in the receiving groove to avoid it occupying additional space.

[0030] A positioning structure 6 is provided on the baffle plate. Figure 3 As shown, the first template 3 is provided with a guide structure corresponding to the positioning structure 6, and the positioning structure 6 and the guide structure are combined to limit the position when the mold is closed. In order to facilitate the cooperation between the two, the guide structure includes a concave part, and the positioning structure 6 includes a convex part corresponding to the concave part. Before the mold is closed, the concave part and the convex part are plugged into each other.

[0031] The mold blank also includes a loading mechanism 11, which lifts the blank and transfers it between the first template 3 and the second template 4. The blank body 13 includes a blank connecting portion 12 and a blank body 13. During blow molding, the first template 3 and the second template 4 clamp the blank body 13 into the molding cavity 5 for blow molding. Generally, when the loading mechanism 11 lifts the blank and transfers it, the operator is also required to pay attention to the position of the blank to prevent the blank from being at a predetermined blow molding position.

[0032] In this embodiment, preferably, one end of the guide structure close to the first template 3 extends out of the first template 3 to prevent the blank body 13 from moving over the guide structure when loading. Since it is difficult to ensure that the blank at the bottom does not shake when the loading mechanism 11 lifts the blank, if it is not prevented, if the blank shakes over the guide structure, it will affect the subsequent blow molding process of the product. The staff needs to wait for the product to be reset and adjusted before continuing production, which slows down production efficiency. The guide structure extends out of the first template 3 a little, which can block the blank, and even if it shakes, it is convenient for the operator to make corrections.

[0033] The first driving part 9 is fixedly mounted on the frame 1, and the driving end of the first driving part 9 passes through the receiving groove and is fixedly connected to the first template 3. Figure 1 As shown, the installation of the first driving part 9 is facilitated.

[0034] like Figure 1 As shown, the installation position of the second driving part 10 is adjacent to the bottom of the molding cavity 5. The second driving part 10 set in this way has a certain height in the initial state, which can shield the workers and prevent them from approaching the clamping area of ​​the first template 3 and the second template 4 to ensure safety.

[0035] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A kayak blow molding mold, characterized in that: The invention comprises a first template and a second template which are arranged to slide in the horizontal direction, and a feeding mechanism arranged above the first template and the second template. The molding cavity of the first template has a convex mold for molding a kayak cockpit. The first template is provided with a first driving part and an ejection mechanism. The second template is provided with a second driving part. The first driving part and the second driving part make the first template and the second template move away from / close to each other. The ejection mechanism is plugged into and matched with the convex mold. The inner side surface of the convex mold is formed with a slot which fits with the ejection mechanism. When the mold is closed, the inner end surface of the ejection mechanism and the inner side surface of the punch are kept aligned so that the inner side of the slot of the punch is closed. When the mold is opened, the first driving part and the second driving part drive the first template and the second template to move away from each other, and the ejection mechanism extends out of the slot to eject the product.

2. The kayak blow mold according to claim 1, characterized in that: It also includes a base frame, which includes a guide portion for limiting the sliding of the first template and the second template.

3. The kayak blow mold according to claim 2, characterized in that: It also includes a frame and a mold frame, both of which are fixedly mounted on the base frame, and the mold frame includes a receiving groove for receiving the sliding of the first template.

4. The kayak blow mold according to claim 3, characterized in that: The first template is provided with baffles extending to the outer ends on both sides thereof, the second driving part is arranged between the frame and the baffles, and the second driving part passes through the mold frame, and the first driving part extends from the accommodating groove and is connected to the first template.

5. The kayak blow mold according to claim 4, characterized in that: The baffle is provided with a positioning structure, and the first template is provided with a guiding structure corresponding to the positioning structure. When the mold is closed, the positioning structure and the guiding structure are combined to limit the position.

6. The kayak blow mold according to claim 5, characterized in that: It also includes a loading mechanism, which lifts the blank and transfers it between the first template and the second template. The blank body includes a blank connecting part and a blank body. During blow molding, the first template and the second template clamp the blank body into the molding cavity for blow molding.

7. The kayak blow mold according to claim 6, characterized in that: One end of the guide structure close to the first template extends out of the first template to prevent the blank body from moving over the guide structure when loading.

8. The kayak blow mold according to claim 7, characterized in that: The guide structure includes a concave portion, and the positioning structure includes a convex portion corresponding to the concave portion. Before the mold is closed, the concave portion and the convex portion are engaged in a concave-convex plug-in manner.

9. The kayak blow mold according to claim 3, characterized in that: The first driving part is fixedly mounted on the frame, and a driving end of the first driving part passes through the accommodating groove and is fixedly connected to the first template.

10. The kayak blow mold according to claim 4, characterized in that: The second driving part is installed close to the bottom of the molding cavity.

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