Adjustable flash-free foaming mold

Abstract

The utility model aims to provide an adjustable flash-free foaming mould, which comprises a rear mould plate, a front mould plate, a support plate and an adjusting component, the rear mould plate is used for being mutually buckled with the front mould plate, and the support plate is arranged on one side surface, far away from the front mould plate, of the rear mould plate in a sliding manner along the thickness direction of the rear mould plate; the adjusting assembly comprises a spring jacking block, an elastic piece, a jacking block and a rotary jacking block, the spring jacking block is slidably arranged in the supporting plate in the thickness direction of the supporting plate, the elastic piece abuts against the spring jacking block and the jacking block so that the end, away from the spring jacking block, of the jacking block can abut against the rear mold plate, and a first inclined jacking face is arranged on the side, away from the elastic piece, of the spring jacking block; a second inclined top surface is arranged on the rotary jacking block, the rotary jacking block is adjustably and rotatably arranged in the supporting plate, the second inclined top surface abuts against the first inclined top surface, and the rotary jacking block is used for enabling the jacking spring block to be close to the jacking block to compress the elastic piece or to be away from the jacking block to release the elastic piece when the rotary jacking block is rotated by external force.

Description

Technical Field

[0001] The utility model relates to the technical field of foaming moulds, in particular to an adjustable flash-free foaming mould. Background Art

[0002] Foaming molds work by adding a blowing agent to a plastic melt. Heating the agent decomposes the agent, producing gas that expands the plastic to form a foam structure. This process is used to create plastic or rubber products with internal cellular structures. The resulting parts are lighter, more flexible, and possess certain thermal and sound insulation properties, leading to their widespread use in automotive steering wheels.

[0003] For example, Chinese patent publication CN218615063U discloses a spring plate structure and mold for a flashless foaming mold, comprising a spring plate body and multiple elastic adjustment components. The spring plate body is provided with multiple through-holes extending through its thickness, with each elastic adjustment component correspondingly disposed within a through-hole. The elastic adjustment component comprises a support member, a pressure member, and an elastic member. The upper portion of the support member is exposed on the upper surface of the spring plate body, and the support member has a first bottom surface. The elastic member is sleeved on the side wall of the support member, with its upper portion abutting the first bottom surface and its lower portion abutting the pressure member. Thus, the coordination between the spring plate body and the multiple elastic adjustment components prevents the problem of flash on the part due to tilting of the rear and front mold plates during mold closing, which could result in flash at the mold closing point.

[0004] However, the existing spring plate structure has the following problems in actual production: the supporting force of the support member is provided by the elastic component, and the elastic component is composed of multiple springs stacked together. Therefore, the supporting force is determined by the number of springs. In actual production, the foaming mold is adjusted to the optimal production state by the number of springs. However, to change the number of springs, it is necessary to remove the pressing piece from the spring plate body before removing the elastic component and the support member from the through hole. This is too troublesome when adjusting the machine in actual production. Secondly, if the specifications of the springs are consistent, it means that adding or removing a single spring, the change in the elastic force of the elastic component is a digital variable. Therefore, in order to obtain a more appropriate elastic force, springs of different specifications are often required to be prepared for combination use. This not only increases the material cost of the springs, but also the combination methods are diverse. It takes repeated machine adjustment tests to find the optimal combination structure, so it takes a lot of time to adjust the machine and conduct trial production. In view of this, in order to solve the above-mentioned shortcomings, the adjustable flashless foaming mold of the present application is proposed. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and provide an adjustable flashless foaming mold that can quickly adjust the elastic force to avoid tilting of the front mold and the rear mold when the foaming mold is closed, so as to improve the production quality of the foamed workpiece.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] An adjustable flashless foaming mold includes a rear template and a front template that are interlocked, and also includes:

[0008] a support plate, the support plate being slidably disposed on a side of the rear template away from the front template along a thickness direction of the rear template; and

[0009] The adjusting assembly comprises a top spring block, an elastic member, a top support block and a rotary top block, the top spring block being slidably arranged in the support plate along the thickness direction of the support plate, the elastic member respectively abuts against the top spring block and the top support block, so that the end of the top support block away from the top spring block abuts against the rear template, the top spring block is provided with a first inclined top surface on the side away from the elastic member, the rotary top block is provided with a second inclined top surface, the rotary top block is adjustably rotatable in the support plate, and the second inclined top surface abuts against the first inclined top surface, and the rotary top block is used to make the top spring block approach the top support block to compress the elastic member or move away from the top support block to release the elastic member when it is rotated by external force.

[0010] Optionally, the support plate includes a first plate body and a second plate body, the first plate body and the second plate body are stacked, and the top spring block is slidably disposed in the first plate body along a thickness direction of the first plate body.

[0011] Optionally, a circular boss is provided on the top spring block, a circular groove is provided on the rotary top block, and the circular boss is adaptively inserted into the circular groove so that the rotary top block can rotate relative to the top spring block.

[0012] Optionally, the adjustment assembly further includes a clamping block, which is detachably arranged on a side surface of the second plate body away from the first plate body, and the clamping block abuts against the screw-top block.

[0013] Optionally, a void hole is provided on the clamping block, and a multi-faceted column is provided on one side of the screw-top block close to the clamping block, and the multi-faceted column passes through the void hole.

[0014] Optionally, an end surface of the multifaceted column away from the spin-top block is flush with a side surface of the clamping block away from the spin-top block.

[0015] Optionally, an arc-shaped hole is provided on the clamping block, an adjusting member is provided in the arc-shaped hole, and the adjusting member is used to be screwed to the screw-top block.

[0016] Optionally, two second inclined top surfaces are provided, and the two second inclined top surfaces are centrally symmetrically distributed relative to the axis of the rotary top block.

[0017] Optionally, the elastic member includes a plurality of spring sheets, and the spring sheets are stacked in sequence.

[0018] Optionally, a plurality of the adjusting components are provided, and intervals are provided between the adjusting components.

[0019] Compared with the prior art, the present invention has at least the following advantages:

[0020] The adjustable flashless foaming mold of the utility model comprises a rear template, a front template, a support plate and an adjusting component, the rear template is used to be buckled with the front template, the support plate is slidably arranged on a side surface of the rear template away from the front template along the thickness direction of the rear template, the adjusting component comprises a top spring block, an elastic member, a top support block and a rotary top block, the top spring block is slidably arranged in the support plate along the thickness direction of the support plate, the elastic member is respectively abutted against the top spring block and the top support block, so that one end of the top support block away from the top spring block abuts against the rear template, a first inclined top surface is provided on the side of the top spring block away from the elastic member, a second inclined top surface is provided on the rotary top block, the rotary top block is adjustably rotatable in the support plate, and the second inclined top surface abuts against the first inclined top surface, and the rotary top block is used to make the top spring block approach the top support block to compress the elastic member or move away from the top support block to release the elastic member when rotated by external force. In this way, the elastic force of the rear template relative to the support plate can be quickly adjusted by rotating the top block to ensure that the rear template does not tilt when the front template is closed, thereby improving the production quality of the foamed workpiece and shortening the machine adjustment and trial production cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic structural diagram of an adjustable flashless foaming mold according to one embodiment of the present invention;

[0023] Figure 2 for Figure 1 The cross-sectional structure diagram of the adjustable flashless foaming mold shown;

[0024] Figure 3 This is a partial structural diagram of an adjustment assembly according to one embodiment of the present invention;

[0025] Figure 4 It is a structural schematic diagram of a rotary top block according to one embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 10. Adjustable flashless foaming mold; 100. Rear template; 200. Support plate; 300. Adjustment assembly; 310. Top spring block; 320. Elastic member; 330. Top support block; 340. Rotary top block; 311. First inclined top surface; 341. Second inclined top surface; 210. First plate body; 220. Second plate body; 350. Circular boss; 342. Circular rotary groove; 360. Block; 361. Avoidance hole; 370. Polyhedral column; 362. Arc hole; 380. Adjustment member; 321. Spring piece. DETAILED DESCRIPTION

[0028] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the accompanying drawings, in which preferred embodiments of the present invention are shown.

[0029] like Figures 1 to 4 As shown, an adjustable flashless foaming mold 10 includes a rear template 100, a front template, a support plate 200 and an adjustment component 300 that are interlocked. The support plate 200 is slidably arranged on a side surface of the rear template 100 away from the front template along the thickness direction of the rear template 100. The adjustment component 300 includes a top spring block 310, an elastic member 320, a top support block 330 and a rotary top block 340. The top spring block 310 is slidably arranged in the support plate 200 along the thickness direction of the support plate 200. The elastic member 320 is respectively connected to the top spring block 310 and the top support block 330. The top block 330 abuts against the end thereof away from the top spring block 310 and abuts against the rear template 100. A first inclined top surface 311 is provided on the side of the top spring block 310 away from the elastic member 320. A second inclined top surface 341 is provided on the rotary top block 340. The rotary top block 340 is adjustably rotatably arranged in the support plate 200, and the second inclined top surface 341 abuts against the first inclined top surface 311. When the rotary top block 340 is rotated by an external force, the top spring block 310 is moved close to the top support block 330 to compress the elastic member 320 or away from the top support block 330 to release the elastic member 320.

[0030] It should be noted that the rear template 100 is used to engage with the front template (not shown) to jointly enclose a mold cavity for molding a workpiece, wherein the rear template 100 and the support plate 200 are configured to slide relative to each other along the thickness direction. For example, the rear template 100 and the support plate 200 can be matched by installing guide pins and sleeves to enable the rear template 100 to slide relative to the support plate 200 along its thickness direction. The adjustment assembly 300 is installed between the support plate 200 and the rear template 100, so that the elastic force of the rear template 100 relative to the support plate 200 is adjustable. In this way, when the injection molding machine drives the front template 100 to engage with the rear template 100, since the injection molding machine's pressing force can reach 10 tons, the elastic force of the rear template 100 relative to the support plate 200 is adjustable, which means that the mold clamping force when the front template 100 and the rear template 100 are adjustable. Therefore, positional deviation between the front template 100 and the rear template 100 can be avoided, thereby preventing the problem of flash on the workpiece molded in the mold cavity. Furthermore, in the adjustment assembly 300, the top spring block 310 is slidably mounted within the support plate 200 along the thickness direction of the support plate 200. The elastic member 320 abuts against the top spring block 310 and the top support block 330, respectively. The end of the top support block 330 away from the elastic member 320 abuts against the rear template 100. Furthermore, the rotary top block 340 is adjustably rotatably mounted within the support plate 200, meaning that the rotary top block 340 can rotate relative to the top spring block 310. The top spring block 310 is provided with a first inclined top surface 311, and the rotary top block 340 is provided with a second inclined top surface 341. Both the first inclined top surface 311 and the second inclined top surface 341 are inclined surface structures, and the first inclined top surface 311 and the second inclined top surface 341 are adaptively abutted. Thus, when the lifting block 340 is rotated, the second inclined top surface 341 pushes against the first inclined top surface 311, causing the lifting spring block 310 to move closer to the supporting block 330. This means that the elastic member 320 located between the lifting spring block 310 and the supporting block 330 is compressed. When the lifting block 340 is rotated in the opposite direction, the lifting spring block 310 moves away from the supporting block 330, and the elastic member 320 located between the lifting spring block 310 and the supporting block 330 is released. In this way, the sliding displacement of the rear template 100 relative to the support plate 200 is determined by the elastic force of the elastic member 320, and the elastic force of the elastic member 320 is positively correlated with the compression amount of the elastic member 320. Therefore, the elastic buffering force of the rear template 100 relative to the support plate 200 can be fine-tuned by rotating the rotary top block 340. In this way, during the adjustment trial production process, compared with the existing method of increasing or decreasing the number of spring pieces, the present application can quickly adjust the elastic force of the rear template 100 relative to the support plate 200 by rotating the rotary top block 340 when the injection molding quality of the workpiece is poor (that is, the workpiece has a flash problem at the edge of the mold), ensuring that the rear template 100 does not tilt when the front template is molded, thereby improving the production quality of the foamed workpiece and achieving the purpose of shortening the machine adjustment and trial production cycle.It should be noted that the position of the screw-top block 340 relative to the support plate 200 can be fixed. In this way, when the screw-top block 340 is rotated to adjust to a suitable position, the screw-top block 340 can be fixed to the support plate 200 by screws, so that the state of the elastic member 320 can be maintained.

[0031] like Figure 1 and Figure 2 As shown, in one embodiment, the support plate 200 includes a first plate body 210 and a second plate body 220. The first plate body 210 and the second plate body 220 are stacked, and the top spring block 310 is slidably set in the first plate body 210 along the thickness direction of the first plate body 210.

[0032] It should be noted that the top spring block 310 needs to slide along the thickness direction of the support plate 200. In order to avoid a gap between the top spring block 310 and the sliding slot of the support plate 200, high-precision assembly is required between the sliding slots of the top spring block 310. High-precision assembly means increased cost. In order to reduce manufacturing costs, the support plate 200 is set to a structure composed of a first plate body 210 and a second plate body 220, wherein the strength of the first plate body 210 is higher than that of the second plate body 220. In this way, the material input cost can be reduced.

[0033] like Figure 2 As shown, in one embodiment, a circular boss 350 is provided on the top spring block 310, and a circular groove 342 is opened on the top screw block 340. The circular boss 350 is adaptively inserted into the circular groove 342 so that the top screw block 340 can rotate relative to the top spring block 310.

[0034] It should be noted that the circular boss 350 and the top spring block 310 are coaxially distributed, and the circular spiral groove 342 is also coaxially distributed with the top screw block 340. The circular boss 350 and the circular spiral groove 342 are adapted to be installed so that the top screw block 340 can stably rotate relative to the top spring block 310.

[0035] like Figures 1 to 3 As shown, in one embodiment, the adjustment assembly 300 further includes a clamping block 360 . The clamping block 360 is detachably disposed on a side surface of the second plate 220 away from the first plate 210 , and the clamping block 360 abuts against the screw-top block 340 .

[0036] It should be noted that in order to facilitate the disassembly / installation of the adjustment assembly 300, a clamping block 360 is installed on the second plate 220 to use the clamping block 360 to clamp the screw-top block 340. Under the elastic thrust of the elastic member 320, the screw-top block 340 will stably abut against the clamping block 360.

[0037] like Figures 1 to 3As shown, in one embodiment, a clearance hole 361 is opened on the clamping block 360 , and a multi-faceted column 370 is provided on one side of the screw-top block 340 close to the clamping block 360 , and the multi-faceted column 370 is passed through the clearance hole 361 .

[0038] It should be noted that to facilitate the application of torque to the screw-top block 340, a multifaceted column 370 is provided on the screw-top block 340, and the multifaceted column 370 extends through the clearance hole 361. This allows the multifaceted column 370 to be tightened through the clearance hole 361 using a tool such as a wrench to twist the multifaceted column 370. In one embodiment, the multifaceted column 370 is a hexagonal column.

[0039] In one embodiment, the end surface of the polyhedral column 370 away from the screw-up block 340 is flush with the side surface of the clamping block 360 away from the screw-up block 340. This prevents the polyhedral column 370 from protruding from the surface of the clamping block 360 and prevents the polyhedral column 370 from being hit during the mold transfer process.

[0040] like Figure 1 and Figure 3 As shown, in one embodiment, an arc-shaped hole 362 is formed on the clamping block 360 , and an adjusting member 380 is disposed in the arc-shaped hole 362 . The adjusting member 380 is used to screw the top block 340 .

[0041] Thus, when the top screw block 340 is rotated to a desired position, the top screw block 340 is locked and fixed to the clamping block 360 using the adjusting member 380. The clamping block 360 has an arc-shaped hole 362, which allows the adjusting member 380 to be locked at any position within the arc-shaped hole 362. In one embodiment, the adjusting member 380 is a screw.

[0042] In one embodiment, two second inclined top surfaces 341 are provided, and the two second inclined top surfaces 341 are centrally symmetrically distributed with respect to the axis of the rotating top block 340 .

[0043] It should be noted that, correspondingly, two first inclined top surfaces 311 are also provided, and the two first inclined top surfaces 311 are centrally symmetrically distributed relative to the axis of the rotary top block 340. The two second inclined top surfaces 341 abut against the two first inclined top surfaces 311 respectively.

[0044] like Figure 2 As shown, in one embodiment, the elastic member 320 includes a plurality of elastic pieces 321 , and the elastic pieces 321 are stacked in sequence.

[0045] In this way, multiple spring pieces 321 are stacked in sequence to ensure that the supporting block 330 has sufficient elastic thrust relative to the top spring block 310. It should be noted that the orientation of each spring piece 321 can be set according to actual conditions, and each spring piece 321 can be divided into several groups for stacking installation.

[0046] In one embodiment, multiple adjustment assemblies 300 are provided, with spacing between each adjustment assemblies 300. This allows for fine-tuning of the spring force at multiple positions of the rear template 100 relative to the support plate 200, thereby enabling rapid adjustment of the position of the rear template 100 relative to the support plate 200 to ensure that workpieces formed by the rear template 100 and the front template are free of burrs and are good products.

[0047] The above-mentioned embodiments only express several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. Unless otherwise specifically defined, the installation / fixing / setting mentioned in the present invention can be understood to include but not be limited to locking and fixing with screws / screws and welding. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the utility model patent shall be based on the attached claims.

Claims

1. An adjustable flashless foaming mold, comprising a rear template and a front template that are interlocked, characterized in that: Also includes: a support plate, the support plate being slidably disposed on a side of the rear template away from the front template along a thickness direction of the rear template; and The adjusting assembly comprises a top spring block, an elastic member, a top support block and a rotary top block, the top spring block being slidably arranged in the support plate along the thickness direction of the support plate, the elastic member respectively abuts against the top spring block and the top support block, so that the end of the top support block away from the top spring block abuts against the rear template, the top spring block is provided with a first inclined top surface on the side away from the elastic member, the rotary top block is provided with a second inclined top surface, the rotary top block is adjustably rotatable in the support plate, and the second inclined top surface abuts against the first inclined top surface, and the rotary top block is used to make the top spring block approach the top support block to compress the elastic member or move away from the top support block to release the elastic member when it is rotated by external force.

2. The adjustable flashless foaming mold according to claim 1, characterized in that: The support plate includes a first plate body and a second plate body, the first plate body and the second plate body are stacked, and the top spring block is slidably disposed in the first plate body along the thickness direction of the first plate body.

3. The adjustable flashless foaming mold according to claim 2, characterized in that: The top spring block is provided with a circular boss, the rotary top block is provided with a circular groove, the circular boss is adaptively inserted into the circular groove, so that the rotary top block can rotate relative to the top spring block.

4. The adjustable flashless foaming mold according to claim 3, characterized in that: The adjustment assembly further includes a clamping block, which is detachably arranged on a side surface of the second plate body away from the first plate body, and the clamping block abuts against the screw-top block.

5. The adjustable flashless foaming mold according to claim 4, characterized in that: The clamping block is provided with an air-avoiding hole, and a multi-faceted column is provided on one side of the screw-top block close to the clamping block, and the multi-faceted column is passed through the air-avoiding hole.

6. The adjustable flashless foaming mold according to claim 5, characterized in that: The end surface of the multifaceted column away from the screw-top block is flush with a side surface of the clamping block away from the screw-top block.

7. The adjustable flashless foaming mold according to claim 4, characterized in that: An arc-shaped hole is provided on the clamping block, an adjusting piece is provided in the arc-shaped hole, and the adjusting piece is used for screwing the top block.

8. The adjustable flashless foaming mold according to claim 1, characterized in that: Two second inclined top surfaces are provided, and the two second inclined top surfaces are centrally symmetrically distributed relative to the axis of the rotating top block.

9. The adjustable flashless foaming mold according to claim 1, characterized in that: The elastic member includes a plurality of spring sheets, and the spring sheets are stacked in sequence.

10. The adjustable flashless foaming mold according to claim 1, characterized in that: There are multiple adjustment components, and intervals are set between each adjustment component.

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