SMC product punching device capable of preventing local cracking

Abstract

The utility model relates to the technical field of SMC (Sheet Molding Compound) product processing, in particular to an SMC product punching device capable of preventing local cracking, which comprises a punching component and a pressure-bearing component positioned below the punching component, the punching assembly comprises an upper horizontal linear guide rail pair, an upper lifting driving push rod, a mounting plate, an upper punching periphery pre-pressing mechanism, a connecting block, a height adjusting screw rod, a hydraulic driving push rod, a connecting plate and a punching rod; the pressure bearing assembly comprises a lower horizontal linear guide rail pair, a lower lifting driving push rod and a lower punching periphery pre-pressing mechanism, the lower lifting driving push rod is installed on the upper side of a sliding block of the horizontal linear guide rail pair, and the lower punching periphery pre-pressing mechanism is installed at the movable end of the lower lifting driving push rod. The upper punching peripheral prepressing mechanism and the lower punching peripheral prepressing mechanism are introduced, the punched periphery is reliably clamped in advance through the upper punching peripheral prepressing mechanism and the lower punching peripheral prepressing mechanism, then reliable supporting is provided for the peripheral area of an irregular shell in advance before the irregular shell is punched, and the situation of local cracking is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of SMC product processing, in particular to a punching device for SMC products that can prevent local cracking. Background Technique

[0002] SMC, namely sheet molding compound, has superior electrical properties, corrosion resistance, light weight, easy and flexible engineering design, etc. Its mechanical properties can be comparable to some metal materials, so it is widely used in industries such as transport vehicles, construction, electronics / electrics, etc. Now many SMC products are made into various shapes according to product requirements, such as automobile protective shells. Drilling is often required on the shell of the automobile protective shell. When drilling an irregular shell, the shell will be unevenly stressed, resulting in the drill bit being prone to deviate from the target position, and even causing local cracking of the outer shell, unable to quickly locate the drilling, resulting in low drilling efficiency.

[0003] For this reason, the patent specification with the publication number CN212421505U discloses a punching device for SMC products, including a base, a support column, a limit column, a baffle and a clamping jaw; the base is fixed on the drill press workbench, the support column is vertically arranged at the central position of the base, the limit column is vertically arranged on the lateral side of the support column, the baffle is vertically arranged on the longitudinal side of the support column, a through hole corresponding to the position of the drill bit of the drill press is arranged at the top of the support column, one end of the clamping jaw is hinged to the top of the baffle, and the other end of the clamping jaw can rotate to the locking position where the SMC product is pressed on the support column.

[0004] However, this punching device for SMC products still has deficiencies in use. Its applicability is poor, and it cannot provide reliable support for the peripheral area of an irregular shell before punching, and thus cannot effectively prevent the occurrence of local cracking. Therefore, its structure needs to be optimized and improved. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the above problems existing in the traditional technology, and provide a punching device for SMC products that can prevent local cracking.

[0006] To achieve the above technical purpose and reach the above technical effect, the utility model is realized through the following technical solutions:

[0007] A punching device for SMC products that can prevent local cracking, including a stamping component and a pressure-bearing component located below it;

[0008] The stamping assembly includes an upper horizontal linear guide pair, a rising and falling drive push rod, a mounting plate, an upper pre-pressing mechanism for the periphery of the punching hole, a connecting block, an adjusting screw, a hydraulic drive push rod, a connecting plate and a punching rod. The lower side of the slider of the upper horizontal linear guide pair is provided with a rising and falling drive push rod. The movable end of the rising and falling drive push rod is provided with a hydraulic drive push rod through the mounting plate. The movable end of the hydraulic drive push rod is provided with a punching rod through the connecting plate. The upper pre-pressing mechanism for the periphery of the punching hole is sleeved on the periphery of the hydraulic drive push rod. The upper side of the upper pre-pressing mechanism for the periphery of the punching hole is provided with a connecting block. The mounting plate is provided with an adjusting screw, and the lower end of the adjusting screw is movably restricted in the connecting block;

[0009] The pressure-bearing assembly includes a lower horizontal linear guide pair, a lower rising and falling drive push rod and a lower pre-pressing mechanism for the periphery of the punching hole. The upper side of the slider of the lower horizontal linear guide pair is provided with a lower rising and falling drive push rod. The movable end of the lower rising and falling drive push rod is provided with a lower pre-pressing mechanism for the periphery of the punching hole.

[0010] Further, in the above punching device for SMC products that can prevent local cracking, a processing area for facilitating the entry of SMC products is provided between the stamping assembly and the pressure-bearing assembly.

[0011] Further, in the above punching device for SMC products that can prevent local cracking, a threaded hole matching the adjusting screw is provided in the mounting plate.

[0012] Further, in the above punching device for SMC products that can prevent local cracking, the upper pre-pressing mechanism for the periphery of the punching hole and the lower pre-pressing mechanism for the periphery of the punching hole have the same structure and are distributed oppositely.

[0013] Further, in the above punching device for SMC products that can prevent local cracking, the upper pre-pressing mechanism for the periphery of the punching hole includes a box body. A through hole is provided at the center of the box body. A plurality of vertical sliding tubes are fixed around the through hole in the inner cavity of the box body. A piston block is hermetically and slidably restricted in the vertical sliding tubes. The lower end of the piston block is provided with a pre-pressing rod extending out of the box body. A compression spring is installed between the upper side of the piston block and the top end of the inner cavity of the vertical sliding tube. The box body is provided with an annular oil storage cover around the through hole. The annular oil storage cover is communicated with the top of the inner cavity of each vertical sliding tube through an oil pipe.

[0014] Further, in the above punching device for SMC products that can prevent local cracking, a hemispherical pressing head is installed at the outer end of the pre-pressing rod. The hemispherical pressing head is made of rubber material to prevent pressing damage.

[0015] Further, in the above punching device for SMC products that can prevent local cracking, a pressure relief air passage communicated with the through hole is provided at the bottom side end of the inner cavity of the vertical sliding tube. A one-way valve is installed in the pressure relief air passage.

[0016] Further, in the SMC product punching device capable of preventing local cracking, the positions of the pre-pressing rods in the upper punching periphery pre-pressing mechanism and the lower punching periphery pre-pressing mechanism correspond to each other one by one.

[0017] The beneficial effects of the present utility model are as follows:

[0018] The structure of the present utility model is reasonably designed. An upper punching periphery pre-pressing mechanism and a lower punching periphery pre-pressing mechanism are respectively introduced in the stamping assembly and the pressure-bearing assembly. The upper punching periphery pre-pressing mechanism and the lower punching periphery pre-pressing mechanism are used to reliably clamp the periphery of the punching in advance, so as to provide reliable support for the peripheral area of the irregular shell before punching, effectively preventing the occurrence of local cracking.

[0019] Of course, it is not necessary for any product implementing the present utility model to achieve all the above advantages simultaneously. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic diagram of the use state of the present utility model;

[0022] Figure 2 It is a schematic structural diagram of the stamping assembly in the present utility model;

[0023] Figure 3 It is a schematic structural diagram of the pressure-bearing assembly in the present utility model;

[0024] Figure 4 It is a front view structural schematic diagram of the upper punching periphery pre-pressing mechanism in the present utility model;

[0025] Figure 5 It is a bottom view structural schematic diagram of the upper punching periphery pre-pressing mechanism in the present utility model;

[0026] Figure 6 It is a schematic structural diagram of the punching rod mechanism in the present utility model;

[0027] In the drawings, the list of components represented by each reference numeral is as follows:

[0028] 1 - Stamping assembly, 11 - Upper horizontal linear guide pair, 12 - Upward lifting drive push rod, 13 - Mounting plate, 14 - Preloading mechanism for the periphery of the upper punching, 141 - Box body, 142 - Through hole, 143 - Vertical sliding tube, 144 - Piston block, 145 - Preloading rod, 146 - Compression spring, 147 - Annular oil storage cover, 148 - Oil pipe, 149 - Pressure relief air duct, 15 - Connecting block, 16 - Height adjustment screw, 17 - Hydraulic drive push rod, 18 - Connecting plate, 19 - Punch rod;

[0029] 2 - Bearing assembly, 21 - Lower horizontal linear guide pair, 22 - Downward lifting drive push rod, 23 - Preloading mechanism for the periphery of the lower punching;

[0030] 3 - SMC product. Specific implementation manner

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0032] As Figures 1-6 shown, this embodiment provides a punching device for SMC products that can prevent local cracking, including a stamping assembly 1 and a bearing assembly 2 located below it.

[0033] In this embodiment, the stamping assembly 1 includes an upper horizontal linear guide pair 11, an upward lifting drive push rod 12, a mounting plate 13, a preloading mechanism 14 for the periphery of the upper punching, a connecting block 15, a height adjustment screw 16, a hydraulic drive push rod 17, a connecting plate 18, and a punch rod 19. The lower side of the slider of the upper horizontal linear guide pair 11 is installed with an upward lifting drive push rod 12, and the movable end of the upward lifting drive push rod 12 is installed with a hydraulic drive push rod 17 through the mounting plate 13. The hydraulic drive push rod 17, the connecting plate 18, and the punch rod 19 together form a punch rod mechanism. The preloading mechanism 14 for the periphery of the upper punching is sleeved around the hydraulic drive push rod 17. The upper side of the preloading mechanism 14 for the periphery of the upper punching is installed with a connecting block 15, and the mounting plate 13 is installed with a height adjustment screw 16. The lower end of the height adjustment screw 16 is movably restricted in the connecting block 15.

[0034] In this embodiment, the bearing assembly 2 includes a lower horizontal linear guide pair 21, a downward lifting drive push rod 22, and a preloading mechanism 23 for the periphery of the lower punching. The upper side of the slider of the lower horizontal linear guide pair 21 is installed with a downward lifting drive push rod 22, and the movable end of the downward lifting drive push rod 22 is installed with a preloading mechanism 23 for the periphery of the lower punching.

[0035] In this embodiment, a processing area facilitating the entry of the SMC product 3 is provided between the stamping assembly 1 and the pressure-bearing assembly 2.

[0036] In this embodiment, a threaded hole matching with the height-adjusting screw rod 16 is provided in the mounting plate 13.

[0037] In this embodiment, the upper peripheral pre-pressing mechanism 14 for punching and the lower peripheral pre-pressing mechanism 14 for punching have the same structure and are distributed oppositely.

[0038] In this embodiment, the upper peripheral pre-pressing mechanism 14 for punching includes a box body 141. A through hole 142 is provided at the center of the box body 141. A plurality of vertical sliding tubes 143 are fixed around the through hole 142 in the inner cavity of the box body 141. A piston block 144 is sealed and slidably limited in the vertical sliding tubes 143. A pre-pressing rod 145 extending out of the box body 141 is installed at the lower end of the piston block 144. A compression spring 146 is installed between the upper side of the piston block 144 and the top end of the inner cavity of the vertical sliding tube 143. An annular oil storage cover 147 is installed around the through hole 142 of the box body 141. The annular oil storage cover 147 is communicated with the top of the inner cavity of each vertical sliding tube 143 through an oil pipe 148.

[0039] In this embodiment, a hemispherical pressing head is installed at the outer end of the pre-pressing rod 145. The hemispherical pressing head is made of a rubber material to prevent pressing damage.

[0040] In this embodiment, a pressure relief air passage 149 communicated with the through hole 142 is provided at the bottom side end of the inner cavity of the vertical sliding tube 143. A one-way valve is installed in the pressure relief air passage 149.

[0041] In this embodiment, the positions of the pre-pressing rods 145 in the upper peripheral pre-pressing mechanism 14 for punching and the lower peripheral pre-pressing mechanism 23 for punching correspond one by one.

[0042] A specific application of this embodiment is as follows: The upper peripheral pre-pressing mechanism 14 for punching and the lower peripheral pre-pressing mechanism 23 for punching are respectively introduced into the stamping assembly 1 and the pressure-bearing assembly 2. The upper peripheral pre-pressing mechanism 14 for punching and the lower peripheral pre-pressing mechanism 23 for punching are used to reliably clamp the periphery of the punched hole in advance, so as to realize providing reliable support for the peripheral area of the irregular shell in advance before punching the shell, and effectively prevent the occurrence of local cracking.

[0043] The above-disclosed preferred embodiments of the present invention are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific implementation manners. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A punching device for SMC products that can prevent local cracking, characterized in that, It includes a stamping assembly and a pressure-bearing assembly located below it; The stamping assembly includes an upper horizontal linear guide pair, a rising and falling drive push rod, a mounting plate, an upper punching peripheral preloading mechanism, a connecting block, an adjusting screw, a hydraulic drive push rod, a connecting plate and a punching rod. The lower side of the slider of the upper horizontal linear guide pair is provided with a rising and falling drive push rod. The movable end of the rising and falling drive push rod is installed with a hydraulic drive push rod through the mounting plate. The movable end of the hydraulic drive push rod is installed with a punching rod through the connecting plate. The upper punching peripheral preloading mechanism is sleeved around the hydraulic drive push rod. The upper side of the upper punching peripheral preloading mechanism is provided with a connecting block. The mounting plate is installed with an adjusting screw, and the lower end of the adjusting screw is movably restricted in the connecting block; The pressure-bearing assembly includes a lower horizontal linear guide pair, a lower rising and falling drive push rod and a lower punching peripheral preloading mechanism. The upper side of the slider of the lower horizontal linear guide pair is provided with a lower rising and falling drive push rod. The movable end of the lower rising and falling drive push rod is installed with a lower punching peripheral preloading mechanism.

2. The punching device for SMC products capable of preventing local cracking according to claim 1, characterized in that, A processing area for facilitating the entry of SMC products is provided between the stamping assembly and the pressure-bearing assembly.

3. The punching device for SMC products capable of preventing local cracking according to claim 2, characterized in that, A threaded hole matching the adjusting screw is provided in the mounting plate.

4. The punching device for SMC products capable of preventing local cracking according to claim 3, wherein, The upper punching peripheral preloading mechanism and the lower punching peripheral preloading mechanism have the same structure and are distributed oppositely.

5. The punching device for SMC products capable of preventing local cracking according to claim 4, characterized in that, The upper punching peripheral preloading mechanism includes a box body. A through hole is provided at the center of the box body. A plurality of vertical sliding tubes are fixed around the through hole in the inner cavity of the box body. A piston block is hermetically and slidably restricted in the vertical sliding tube. The lower end of the piston block is installed with a preloading rod extending out of the box body. A compression spring is installed between the upper side of the piston block and the top end of the inner cavity of the vertical sliding tube. The box body is installed with an annular oil storage cover around the through hole. The annular oil storage cover is communicated with the top of the inner cavity of each vertical sliding tube through an oil pipe.

6. The punching device for SMC products capable of preventing local cracking according to claim 5, characterized in that, A hemispherical pressing head is installed at the outer end of the preloading rod. The hemispherical pressing head is made of rubber material to prevent pressing damage.

7. The punching device for SMC products capable of preventing local cracking according to claim 6, characterized in that, A pressure relief air passage communicated with the through hole is provided at the bottom side end of the inner cavity of the vertical sliding tube. A one-way valve is installed in the pressure relief air passage.

8. The punching device for SMC products capable of preventing local cracking according to claim 7, characterized in that, The positions of the preloading rods in the upper punching peripheral preloading mechanism and the lower punching peripheral preloading mechanism correspond one by one.

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