A built-in multi-inclined top slide plastic cover injection molding mold and its demolding method

Abstract

The application relates to an inner multi-inclined top sliding block plastic cover injection molding mold and a mold stripping method thereof, and relates to the technical field of injection molds. A first module comprises a lower mold shell and a placement plate. A second module comprises a bottom plate, a fixed plate symmetrically arranged on the bottom plate and used for being fixedly connected, a moving plate arranged on the fixed plate, and a static plate arranged between the bottom plate and the moving plate. The lower mold shell comprises a retraction block fixed on the moving plate, an outer retraction block arranged on the retraction block, and a ridge retraction block. The retraction block and the outer retraction block are alternately arranged to enclose the retraction block. The outer retraction block is slidingly connected to the inclined surface of the retraction block. The bottom plate drives the fixed plate to descend to control the moving plate to move downwards. The retraction module controls the retraction block to descend and then controls the outer retraction block and the ridge retraction block to gather inward to realize product stripping. The application has the effects of improving the production efficiency of the inverted buckle-shaped product and effectively avoiding the product from being pulled and deformed.

Description

Technical Field

[0001] This invention relates to the field of injection mold technology, and in particular to an injection mold for a built-in multi-sloping top slider plastic cap and its demolding method. Background Technology

[0002] The built-in multi-sloping top slider plastic cap injection mold is a precision mold designed for complex plastic products. Its core lies in the efficient demolding of features such as multi-directional undercuts and irregular holes of the plastic cap through the coordinated movement of the built-in sloping top and slider.

[0003] In current demolding technology, after the mold is opened, the built-in inclined top pushes the plastic cover, and when demolding directly, the mold is clamped by an inverted clamp. The parts need to be injected separately and then assembled.

[0004] During mold opening, the product is stuck in the inverted position, and the edge of the cover is stretched and deformed, making it impossible to completely demold. Separate injection molding and assembly of the product wastes production time and is inefficient, so there is still room for improvement. Summary of the Invention

[0005] To improve the production efficiency of inverted products and effectively prevent the products from being stretched and deformed, this invention provides an injection mold for a plastic cap with a built-in multi-sloping top slider and a demolding method thereof.

[0006] In a first aspect, the present invention provides a built-in multi-sloping top slider plastic cap injection mold, which adopts the following technical solution: An injection mold for a built-in multi-sloping top slider plastic cover includes an upper mold and a lower mold. The upper mold includes an upper template and an upper mold shell fixed on the upper template for product injection molding. The lower mold includes a first module, a second module, and an inner retraction module for product demolding; The first module includes a lower mold shell that cooperates with the upper mold shell and is used for product injection molding, and a placement plate disposed in the first module for placing and limiting the lower mold shell; The second module includes a base plate, fixed plates symmetrically arranged on the base plate for connection and fixation, a movable plate arranged on the fixed plate, and a stationary plate arranged between the base plate and the movable plate; The lower mold shell includes an inner shrinking block fixed on a moving plate, an outer shrinking block disposed on the inner shrinking block, and a ridge shrinking block. The outer shrinking block and the ridge shrinking block are alternately arranged to jointly enclose the molding cavity of the product. The inner shrinking block is disposed in the molding cavity, and the outer shrinking block is slidably connected to the inclined surface of the inner shrinking block. The base plate drives the fixed plate to descend, thereby controlling the moving plate to move downward. The inner shrinking module controls the inner shrinking block to descend and then controls the outer shrinking block and the edge shrinking block to converge inward, thereby achieving product demolding.

[0007] By adopting the above technical solution, a lower mold shell that fully supports the product can be formed by combining the inner shrink block, the outer shrink block, and the ridge shrink block. This solves the problem that traditional mold models are difficult to form complex-shaped products, making the product injection molding process simpler and expanding the scope of application. By having the inner shrink block descend and detach from the bottom of the product first, and then sequentially bringing the outer shrink block and the ridge shrink block together inward, the simultaneous demolding of the outer shrink block and the ridge shrink block avoids mutual collision and limitation. It also avoids the outer shrink block and the ridge shrink block squeezing the product during demolding, which could cause product deformation or damage.

[0008] Optionally, the retraction module includes a retraction mechanism fixed to the stationary plate and used for the retraction block to slide up and down; The inward retraction mechanism includes a vertical rod fixed to the stationary plate and passing through the inward retraction block and the moving plate, a limiting block set on the vertical rod and used to restrict the inward retraction block from sliding out of the vertical rod, a fixing seat embedded in the stationary plate and fixed to the vertical rod, and a fixing member embedded in the moving plate and allowing the vertical rod to slide through. The inner shrink block is provided with a limiting groove that cooperates with the limiting block. The vertical rod passes through the inner shrink block from top to bottom, so that the top of the limiting block is flush with the top of the inner shrink block. The fixing seat is provided with a fixing hook. The side of the vertical rod away from the limiting block is provided with a fixing groove for fixing with the fixing hook. When the base plate moves downward, the stationary plate remains relatively stationary, while the inward-shrinking block is controlled to rise and fall on the vertical rod.

[0009] By adopting the above technical solution, the vertical rod provides a sliding guide for the inner shrink block, the limiting block interacts with the limiting groove, and the limiting block is fitted into the inner shrink block to prevent the inner shrink block from separating from the vertical rod; and the vertical rod supports the product, which facilitates the demolding of the inner shrink block and the subsequent outer shrink block and ridge shrink block.

[0010] Optionally, the inner shrinking module further includes a sliding mechanism for the outer shrinking block to slide inward on the inner shrinking block, the sliding mechanism being disposed between the inner shrinking block and the outer shrinking block; The inner shrinking block is provided with an inner shrinking inclined surface, and the outer shrinking block is provided with an outer shrinking inclined surface that guides the inner shrinking inclined surface. The sliding mechanism includes a slide block fixed on the inner inclined surface of the inner retracting block and a slide bar embedded on the outer inclined surface of the outer retracting block. The slide bar is symmetrically arranged and slidably connected to the slide block. The slide bar includes a fixed part that fits into and is connected to the outer shrink block, and a sliding part that slides and is connected to the slide base. The slide base is provided with a sliding groove for the sliding part to slide and connect. The inner retraction block is provided with a placement groove for mounting the slide block; As the moving plate drives the inner shrinking block to descend, the outer shrinking block is limited by the placement plate and converges inward along the slide.

[0011] By adopting the above technical solution, the sliding block and the sliding strip set between the inclined plane cooperate with each other, and under the limiting action of the placement plate, the movement of the outer shrinking block that originally followed the inner shrinking block downward is transformed into the movement of the outer shrinking block converging towards the middle on the inclined plane, thus realizing the conversion of force and improving work efficiency.

[0012] Optionally, the inward retraction module further includes a retraction mechanism fixed to the stationary plate and used for retracting the retraction block. The prismatic reduction mechanism includes a support rod connecting the prismatic reduction block and the stationary plate, a guide block located at the bottom of the first module for the support rod to pass through, a limiting ring located on the placement plate for fitting the support rod and for limiting the prismatic reduction block, and a connecting seat for fixing the support rod to the stationary plate. The connecting seat includes a base fixed to a stationary plate and used to connect the support rod and the stationary plate, a sliding block slidably connected in the base, and a connecting block for mounting the support rod on the sliding block; the connecting seat has a sliding groove for the sliding block to slide and a connecting groove for the connecting block to slide. The first module has a through hole for the support rod to pass through, the movable plate has a long groove for the support rod to slide through, the upper end of the through hole is inclined along the direction of the support rod, and the movable plate has a receiving groove for accommodating the placement of the connecting seat. The bottom of the first module is provided with a stabilizing groove for the guide block to be accommodated, and a support spring is provided between the moving plate and the first module; The base plate first drives the moving plate to descend, causing the moving plate to move towards the stationary plate. The support spring on the moving plate supports the first module upward, keeping the first module fixed. The descent of the moving plate pulls the long waist groove to contact the support rod. Then, the stationary plate is driven to move upward and move the connecting seat into the receiving groove. Under the push of the long waist groove and the holding of the guide block, the support rod moves along the ridge direction, causing the ridge shrinking block to gather inward, and simultaneously controlling the sliding block to slide and gather inward.

[0013] By adopting the above technical solution, the long waist groove provides a certain amount of space for the descent of the support rod and provides an interval for the working principle of "first gathering the outer shrinking block, and then gathering the edge shrinking block"; the support spring can keep the first module and the upper template in a stable closed state at all times; when the moving plate descends, the long waist groove moves downward until it contacts the support rod and stops, and then the moving plate is raised, so that the support rod gathers inward and upward along the inclined direction of the product edge under the limit of the long waist groove, while the upper module is lifted and the product is demolded and ejected.

[0014] Secondly, the present invention provides a built-in multi-sloping top slider plastic cap injection mold, which adopts the following technical solution: A demolding method for an injection mold of a built-in multi-sloping-top slider plastic cap, applicable to any of the above-mentioned built-in multi-sloping-top slider plastic cap injection molds, includes: Step 1: Retrieve product information in response to trigger information; Step 2: Determine the cooling method based on the product information and cool and solidify the product. Determine the suction position, jet position, and discharge path based on the product information. Step 3: Draw a perpendicular line from the inhalation position to obtain the support position, find the position that coincides with the support position from the jet positions and define it as the target jet position; Step 4: Calculate the distance between the target jet position and the preset start point and filter out the closest distance. Define the target jet position and the intake position corresponding to the closest distance as the operation point. Step 5: Based on the target jet position at the operation point, the product is separated by jetting; based on the suction position at the operation point, the product is adsorbed and clamped; and discharged through the discharge path.

[0015] By adopting the above technical solution, product information, including material and weight, can be obtained from the trigger information. Based on this information, a precise cooling method is determined to cool the newly molded product. The suction position, jet position, and product discharge path can be determined according to the product information. The suction and support positions are symmetrically distributed on the upper and lower sides of the product, grouped together. The target jet position corresponding to the group with the shortest distance from the starting point is the operating point. The product is adsorbed at the suction position at the operating point, and lifted at the target jet position at the operating point, working in conjunction with the adsorption to achieve a clamping effect. Finally, the product is discharged via the discharge path.

[0016] Optionally, in step 2, the method for determining the inhalation position includes: Step 21: Obtain distance slice information of the product surface and integrate different distance slice information into three-dimensional data information; Step 22: Determine the flatness of the product surface based on the 3D data information and the preset reference plane; Step 230: If the flatness is less than the preset benchmark flatness, then determine the suction point based on the adsorption area and flatness, and merge all suction points into a suction position.

[0017] By adopting the above technical solution, the product is divided into multiple slices, and the distance information on the product slices is obtained and integrated into three-dimensional data information. Based on the three-dimensional data information and a preset reference plane, the flatness of the product surface can be determined. If the flatness is less than the preset reference, the flatness can be used as the suction position. Then, based on the area and flatness of the suction surface, the suction point can be determined, and all suction points are merged into the suction position.

[0018] Optionally, step 5 also includes a verification method for the product before adsorption and clamping, the verification method including: Step 51: When performing jet separation on the product at the target jet position at the operation point, obtain the tilt angle of the product; Step 52: Determine the reference angle, lifting force, and adhesion position based on product information; Step 530: If the tilt angle is greater than the reference angle, the verification is complete; Step 531: If the tilt angle is not greater than the reference angle, obtain the contact temperature at the adhesion position; Step 5320: If the contact temperature is not lower than the preset reference temperature, use the lifting force to lift upwards at the target air jet position until the tilt angle is greater than the reference angle, and obtain the product image at the adhesion position. Step 5330: If the product image matches the preset benchmark product features, clean the adhesion location by blowing air. Step 5331: If the product image is inconsistent with the preset benchmark product features, the verification is completed.

[0019] By adopting the above technical solution, the product can be obtained by spraying air at the target air jet position on the operation point. The tilt angle during air jetting, based on the product information, can determine the reference angle, lifting force, and adhesion position. When the tilt angle is greater than the reference angle, the verification is completed. If the tilt angle is not greater than the reference angle, the contact temperature of the adhesion position is obtained. When the temperature is not lower than the preset reference temperature, the product is lifted upward towards the target air jet position with the lifting force until the tilt angle of the lifting is greater than the reference angle. Then, the product image in the adhesion position is obtained and compared with the preset reference product features to determine whether the product is adhered to the mold.

[0020] Optionally, in step 5330, after blowing air at the adhesion location, if the product image matches the preset benchmark product features, the method further includes: Step 53301: Obtain adhesion image information at the adhesion location; Step 53302: Determine the abnormal location and the recycling location based on the adhesion image information and the preset benchmark product characteristics; Step 53303: Determine the picking parameters based on the abnormal location and preset product parameters; Step 53304: Tick the product according to the picking parameters and suck the product back at the recycling location.

[0021] By employing the above technical solution, the presence of product debris adhering to the mold can be determined based on the information from the adhesion image. The abnormal location and the recovery location can also be identified. Based on the abnormal location and the product parameters, adjustment parameters can be determined, and the product can be moved according to these parameters. Finally, the product is retrieved and recovered from the recovery location.

[0022] Optionally, after provoking the product in step 53304, the method further includes: Step 53305: After picking up the product according to the picking parameters, if the abnormal position remains unchanged, determine the melting temperature based on the abnormal position and product information; Step 53306: Obtain the distance information from the starting point to the abnormal location, filter out the nearest distance point and define it as the melting location, and determine the collection location based on the melting location; Step 53307: Heat the abnormal location at the melting temperature at the melting location, and simultaneously collect the gas at the collection location.

[0023] By adopting the above technical solution, if an abnormal position is still detected after the product is stirred according to the stirring parameters, the melting temperature of the product is determined according to the abnormal position and product information. The melting position and collection position are located at the nearest point from the starting point to the abnormal position. At the same time, air is collected at the collection position while the product is heated from the melting position to the abnormal position at the melting temperature.

[0024] Optionally, in step 5, after discharging the material along the discharge path, the following steps are also included: Step 54: Determine the product parameters, flipping parameters, load-bearing points, and support parameters based on the product information. Determine the flipping method based on the product parameters. The flipping method includes a clamping flipping method and a support flipping method. Step 540: Based on the top-tightening and flipping method, flip the product at the operation point according to the flipping parameters, and transport it to the preset placement area after flipping; Step 541: Based on the support flipping method, the product is adsorbed and flipped according to the air suction position at the operation point according to the flipping parameters, and the product is blown and slid according to the target air jet position at the operation point according to the flipping parameters until it reaches the support point, and then transported to the preset placement area after flipping.

[0025] By adopting the above technical solution, data can be obtained based on product information. Based on this data, the flipping method when the product is adsorbed after demolding can be determined. The flipping method includes top-tight flipping and support flipping. Top-tight flipping directly supports and flips the product at the operation point according to the flipping parameters and transports it to the placement area. Support flipping adsorbs and flips the product at the suction position on the top of the operation point according to the flipping parameters, blows air at the target jet position on the operation point or moves it to the bearing point, and transports the product to the placement area after flipping.

[0026] In summary, this application includes at least one of the following beneficial technical effects: The lower mold shell is divided into multiple internal shrinkable modules, which makes the injection molding process of the product simpler and expands its application range. The inner shrinking module is used to shrink the inner shrinking block, outer shrinking block and edge shrinking block respectively, which facilitates the demolding process. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a plastic cap injection mold with built-in multi-sloping top slider; Figure 2 This is an exploded sectional view of an injection mold for a plastic cap with a built-in multi-sloping top slider. Figure 3 This is an explosion diagram of the first and second modules. Figure 1 ; Figure 4 This is an explosion diagram of the first and second modules. Figure 2 ; Figure 5 This is a structural diagram of the lower mold shell and the inner retraction module; Figure 6 This is a structural diagram of the placement plate and the lower mold shell; Figure 7 This is a structural diagram of the inner retracting block, the outer retracting block, and the sliding mechanism; Figure 8 This is a structural diagram of the internal shrinkage block and the internal shrinkage mechanism; Figure 9 This is a structural diagram of the first module, the moving plate, the inner shrink block, and the prism shrinking mechanism; Figure 10 This is a schematic diagram of the sliding mechanism.

[0028] The parts referred to by the numbers in the above attached figures are as follows: 1. Upper mold; 10. Upper template; 11. Upper mold shell; 2. Lower mold; 20. First module; 200. Lower mold shell; 201. Placement plate; 202. Base plate; 203. Fixing plate; 204. Moving plate; 205. Stationary plate; 2000. Inner shrinking block; 20000. Limiting groove; 2001. Outer shrinking block; 20010. Outer shrinking inclined surface; 2002. Edge shrinking block; 21. Second module; 22. Inner shrinking module; 220. Inner shrinking mechanism; 2200. Vertical rod; 2201. Limiting block; 2202. Fixing seat; 2203. Fixing component; 22020. Fixing hook; 2 2000, Fixed groove; 221, Sliding mechanism; 2210, Slide seat; 2211, Sliding bar; 2212, Fixed part; 2213, Sliding part; 2214, Sliding groove; 20001, Placement groove; 222, Retracting mechanism; 2220, Support rod; 2221, Guide block; 2222, Limiting ring; 2223, Connecting seat; 22230, Base; 22231, Sliding block; 22232, Connecting block; 22233, Sliding groove; 22234, Connecting groove; 223, Inwardly tapered slope; 206, Through hole; 2040, Long waist groove; 207, Stabilizing groove; 208, Receiving groove; 3, Support spring; 4, Product. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0030] The embodiments of the present application disclose an injection mold for a built-in plastic cover with multiple lifter sliders.

[0031] With reference to Figure 1 and Figure 2 an injection mold for a built-in plastic cover with multiple lifter sliders comprises an upper mold 1 and a lower mold 2; the upper mold 1 comprises an upper mold plate 10 and an upper mold shell 11. The upper mold plate 10 is located at the top of the whole, the upper mold shell 11 with a downward opening is fixed to the bottom of the upper mold plate 10 by bolts, and the upper mold shell 11 is used for injection molding the product 4; a pull ring is fixed to the side of the mold by bolts, and the mold is turned over for use during operation.

[0032] With reference to Figure 2 the lower mold 2 comprises a first module 20, a second module 21 and a retractable inner module 22; the first module 20 is located below the upper mold plate 10 and connected to the upper mold plate 10, the second module 21 is located below the first module 20 and connected to the first module 20, and the retractable inner module 22 is arranged on the first module 20 and the second module 21.

[0033] With reference to Figure 2 , Figure 3 and Figure 4 the first module 20 comprises a lower mold shell 200 and a placing plate 201; the placing plate 201 is used for placing the lower mold shell 200 and limiting the downward movement of the lower mold shell 200, and the lower mold shell 200 cooperates with the upper mold shell 11 to complete the injection molding of the product 4. The lower mold shell 200 is mushroom-shaped, and the edge of the upper part of the lower mold shell 200 abuts against and is fixed on the inner edge of the product 4; the lower mold shell 200 comprises an inner retractable block 2000, an outer retractable block 2001 and an edge retractable block 2002; the outer retractable block 2001 is generally in a shape of "Ji", the outer retractable blocks 2001 are distributed in a cross shape at four inner edges of the product 4, and the outer retractable block 2001 is provided with an outer retractable inclined surface 20010; the edge retractable blocks 2002 are distributed in an oblique cross shape at four inner corners of the product 4, the outer retractable blocks 2001 and the edge retractable blocks 2002 are alternately distributed to form a circumferential enclosing structure; the inner retractable block 2000 is a truncated pyramid, the inner retractable block 2000 is located in the middle of the enclosing structure formed by the outer retractable blocks 2001 and the edge retractable blocks 2002, and the inner retractable block 2000 is provided with an inner retractable inclined surface 223.

[0034] With reference to Figure 2 and Figure 3The second module 21 includes a base plate 202, a fixed plate 203, a movable plate 204, and a stationary plate 205. The base plate 202 is located at the bottom of the whole, and the fixed plates 203 are symmetrically arranged on the base plate 202 and fixed by bolts. The movable plate 204 is fixed to the fixed plate 203 by bolts and is located between the fixed plate 203 and the first module 20. A support spring 3 is installed between the movable plate 204 and the first module 20, and a groove for installing the support spring 3 is provided. The stationary plate 205 is located between the base plate 202 and the movable plate 204, and the stationary plate 205 is fixed to the first module 20 by a column passing through the movable plate 204. The inner shrink block 2000 is fixed to the movable plate 204 by bolts.

[0035] Reference Figure 6 , Figure 7 and Figure 8 The outer retraction slope 20010 is an inward and downward inclined surface on the outer retraction block 2001, and the inner retraction slope 223 is an outward and upward inclined surface on the inner retraction block 2000. The inner retraction module 22 includes an inner retraction mechanism 220, a sliding mechanism 221, and a prism retraction mechanism 222. The inner retraction mechanism 220 is disposed on the inner retraction block 2000, passes through the inner retraction block 2000 and the moving plate 204, and is fixed to the stationary plate 205 with bolts. The sliding mechanism 221 is disposed between the inner retraction slope 223 and the outer retraction slope 20010, and the inner retraction slope 223 has a placement groove 20001. The prism retraction mechanism 222 is disposed on the prism retraction block 2002, passes through the first module 20 and the moving plate 204, and is fixed to the stationary plate 205 with bolts.

[0036] Reference Figure 2 and Figure 7The retraction mechanism 220 includes a vertical rod 2200, a limiting block 2201, a fixed seat 2202, and a sliding fixing member 2203 through which the vertical rod 2200 passes. The vertical rod 2200 passes through the retraction block 2000 and the moving plate 204 and is fixed to the stationary plate 205 through the fixed seat 2202. The limiting block 2201 is welded to the top of the vertical rod 2200. A limiting groove 20000 is formed in the retraction block 2000, which just accommodates the limiting block 2201 so that the top of the limiting block 2201 is flush with the top of the retraction block 2000. The limiting block 2201 prevents the vertical rod 2200 and the retraction block 2000 from moving. 0 separation; the fastener 2203 is fixed to the bottom of the first module 20 with bolts and sleeved on the middle of the vertical rod 2200, providing a fixed support point for the vertical rod 2200; the fixing seat 2202 is fixed to the stationary plate 205 with bolts, and fixing hooks 22020 are welded on both sides of the fixing seat 2202. The bottom of the vertical rod 2200 has a fixing groove 22000. The fixing groove 22000 of the vertical rod 2200 is aligned with the fixing hooks 22020 on the fixing seat 2202. The vertical rod 2200 is moved into the fixing seat 2202, and then the fixing seat 2202 is installed in the groove pre-opened in the stationary plate 205 to prevent displacement.

[0037] Reference Figure 6 and Figure 9 The sliding mechanism 221 includes a slide block 2210 and a slide bar 2211. The slide block 2210 is in the shape of an inverted "T" and is fixed with bolts to a placement groove 20001 on the inward inclined surface 223 of the inward retraction block 2000. The slide bars 2211 are symmetrically arranged on both sides of the slide block 2210 and are fixed with bolts to the outward inclined surface 20010 of the outward retraction block 2001. The slide bar 2211 includes a fixing part 2212 and a sliding part 2213. Slide grooves 2214 are provided on both sides of the slide block 2210.

[0038] Reference Figure 6 and Figure 9 The fixing part 2212 is fixed in the groove pre-opened in the outer shrink block 2001 by bolt fitting, and the sliding part 2213 is in the shape of an inverted "L" and symmetrically welded to the fixing part 2212; the sliding parts 2213 on both sides are slidably connected in the sliding grooves 2214 on both sides of the slide block 2210.

[0039] Reference Figure 5 and Figure 8The prismatic reduction mechanism 222 includes a support rod 2220, a guide block 2221, a limiting ring 2222, and a connecting seat 2223. The connecting seat 2223 includes a base 22230, a sliding block 22231, and a connecting block 22232. The limiting ring 2222 is disposed on the inner wall of the placement plate 201 and is sleeved on the support rod 2220 to limit the prismatic reduction block 2002. The support rod 2220 is connected between the prismatic reduction block 2002 and the stationary plate 205 and is fixed to the stationary plate 205 by the base 22230. The sliding blocks 22231 are symmetrically disposed in the base 22230 and are fixed by the connecting block 22232.

[0040] Reference Figure 2 and Figure 8 The first module 20 has a through hole 206 for the support rod 2220 to pass through, and the upper end of the through hole 206 is inclined along the direction of the support rod 2220; the moving plate 204 has a long groove 2040 for the support rod 2220 to pass through.

[0041] The implementation principle of the built-in multi-sloping top slider plastic cover injection molding die of this application embodiment is as follows: the base plate 202 drives the fixed plate 203 and the moving plate 204 to descend, and the support spring 3 on the moving plate 204 supports the first module 20 to keep the first module 20 fixed; at the same time, the inner shrinking block 2000 fixed on the moving plate 204 descends with the moving plate 204, and the outer shrinking block 2001 moves along the sliding mechanism 221 on the inner shrinking slope 223 under the limitation of the placement plate 201. The sliding plate 204 descends to the position where the long waist groove 2040 contacts the support rod 2220 and stops. Then, the stationary plate 205 is raised, causing the support rod 2220 to slide upward. Under the limitation of the long waist groove 2040, the support rod 2220 moves inward along the ridge direction. At the same time, the sliding block 22231 moves inward on the base 22230 due to the inward force of the limitation, so as to realize the upward and inward convergence of the ridge shrinking block 2002 and eject the product 4 upward from the mold.

[0042] Based on the same inventive concept, embodiments of the present invention provide a method for injection molding and demolding, including: Step 1: Retrieve product information in response to trigger information; Trigger information refers to the information that the product injection molding is completed and the product is ejected from the mold; product information refers to information such as the product's material and weight.

[0043] The triggering information is issued by the trigger switch set in the upper template 10. The triggering information is issued when the injection molding is completed and the mold is ejected. After the triggering information is responded to, the pre-set product information is obtained.

[0044] Step 2: Determine the cooling method based on the product information and cool and solidify the product. Determine the suction position, jet position, and discharge path based on the product information. Cooling method refers to the method of cooling the product that has just been demolded; suction position refers to the position where air is sucked from the upper surface of the product to lift the product. Suction is performed by rotating the robotic arm, and a vacuum suction cup is set at the end of the robotic arm. When it comes into contact with the product, it sucks out the air and uses the negative pressure difference to adsorb the product; air jet position refers to the position where air is blown from the lower surface of the product to lift the product; discharge path refers to the pre-set running trajectory for discharging the product.

[0045] The cooling method specifically refers to: cooling the product by blowing cold air onto it through a blower; scanning and imaging the product after it has come out of the mold using an infrared thermal imager; determining the product's temperature based on the grayscale of the thermal image, with higher grayscale indicating higher temperature and lower grayscale indicating lower temperature; defining points with excessively high grayscale as cooling points; connecting all cooling points in order of distance from the blower from near to far and from high to low temperature to form a cooling trajectory; cooling the product along the cooling trajectory using the blower; and updating the thermal image and cooling trajectory in real time.

[0046] After the product is cooled, multiple suction positions, multiple jet positions, and one discharge path can be found based on the product information.

[0047] Step 3: Draw a perpendicular line from the inhalation position to obtain the support position, find the position that coincides with the support position from the jet positions and define it as the target jet position; The support position refers to the position on the lower surface of the product, where a vertical line is drawn based on the air intake position.

[0048] By drawing a perpendicular line from the inhalation position, the support position corresponding to the inhalation position can be obtained. Then, the target jet position corresponding to the support position can be found in the jet position.

[0049] Step 4: Calculate the distance between the target jet position and the preset start point and filter out the closest distance. Define the target jet position and the intake position corresponding to the closest distance as the operation point. The starting point indicates the original position and reset position of the duct.

[0050] Given the coordinates of the target jet position and the starting point, the distance between multiple target jet positions and the starting point is obtained using the distance formula between the two points. The target jet position closest to the starting point is then selected, and the target jet position and its corresponding intake position are defined as the operation point.

[0051] Step 5: Based on the target jet position at the operation point, the product is separated by jetting; based on the suction position at the operation point, the product is adsorbed and clamped; and discharged through the discharge path.

[0052] Once the target jet position is determined, the blower nozzle is moved to the target jet position to separate the product from the air. At the same time, according to the suction position corresponding to the target jet position, the vacuum suction cup is used to adsorb the product at the suction position and the blower nozzle is placed against the support position. The product is discharged through the discharge path by adsorption and clamping.

[0053] Step 21: Obtain distance slice information of the product surface and integrate different distance slice information into three-dimensional data information; Distance slice information refers to several two-dimensional slice layers parallel to the product's reference plane, obtained by scanning the product along its cross-section using a line laser profilometer and an industrial camera. Three-dimensional data information refers to the digital integration of all distance slice information according to the layer positions to construct a digital model data that can fully reflect the overall three-dimensional shape of the product, surface concavity and convexity features, and spatial positional relationships of each part.

[0054] The distance slice information on the product surface is scanned using an industrial camera, and then integrated into three-dimensional data.

[0055] Step 22: Determine the flatness of the product surface based on the 3D data information and the preset reference plane; The preset reference plane refers to the reference surface that is set in the system in advance, based on the product design requirements and molding logic or air suction adsorption requirements of the plastic cap, before determining the flatness of the product surface. It serves as a reference standard for flatness.

[0056] The flatness of the product surface can be calculated based on the three-dimensional data and the preset reference plane.

[0057] First, from the product's three-dimensional data, invalid data points caused by scanning impurities and measurement errors are filtered and cleaned up, leaving only valid data that truly reflects the product's surface morphology, thus laying an accurate foundation for subsequent judgments.

[0058] Next, based on the ideal surface shape during product design (such as the top and sides of the plastic cover), a plane with the highest "fit" to the actual product surface is selected from the cleaned valid data as the preset reference plane. This reference plane needs to meet the following requirements: the average distance from most valid data points on the product surface to this plane must be within a preset reasonable error range, ensuring that the reference plane can truly represent the flatness that the product should have.

[0059] Next, determine the flatness: on the one hand, look at the "maximum distance" from each valid data point on the product surface to the reference plane. This distance can reflect the degree of the most convex or concave surface. The larger the distance, the more obvious the local undulations. On the other hand, look at the "distance consistency" from all data points to the reference plane. If the distances of each point are very small, it means that the surface is flat overall. If the difference is large, it means that the surface is uneven.

[0060] Finally, the two indicators, "maximum distance" and "distance consistency", are compared with the preset benchmark flatness standards (such as maximum allowable undulation and allowable distance difference range). If both indicators meet the standards, the product surface flatness is determined to be up to standard; if not, the uneven areas of the surface are further located to provide a basis for subsequent adjustment of the air intake point position.

[0061] Step 230: If the flatness is less than the preset benchmark flatness, then determine the suction point based on the adsorption area and flatness, and merge all suction points into a suction position.

[0062] The preset baseline flatness refers to the maximum flatness suitable for suction cup adsorption; the adsorption area refers to the area of ​​the suction cup; the suction point refers to all points suitable for suction cup adsorption. If the flatness of the product surface is less than the preset baseline flatness, then the suction point is determined based on the adsorption area and flatness. The surface area is divided and the local flatness is evaluated. Based on the product's three-dimensional data, the product surface is divided into multiple sub-regions according to a preset grid (e.g., a 5mm × 5mm square grid). The area of ​​each sub-region is not less than 1.2 times the adsorption area (allowing for edge error). For each sub-region, its local flatness is calculated, and sub-regions with local flatness greater than or equal to the preset "local baseline flatness" (lower than the overall baseline flatness, but still meeting the adsorption requirements of a single suction cup, such as allowing a maximum undulation of 0.2mm) are selected as candidate areas for suction points.

[0063] To determine candidate suction points, the adsorption area is matched. For each candidate region, the coverage area of ​​a single suction point is determined based on its geometric center and the adsorption area (suction cup diameter or side length): If the suction cup is circular (area S = πr²), a circular range is defined with the center of the candidate region as the center and r as the radius; if it is square (area S = a × b), a square range of a × b is defined with the center as the origin. This range is ensured to fall entirely within the candidate region, and the distance between the edge of the range and the boundary of the candidate region is ≥ 0.5 mm (avoiding areas outside flat regions). The center of this range is the initial suction point for that candidate region.

[0064] Optimize the distribution and number of suction points. For all initial suction points, check for overlaps (if the overlap area between two suction points is greater than 10%) or excessive spacing (the edge distance between adjacent suction points is greater than 1.5 times the suction cup diameter, which may lead to unstable adsorption). If overlaps exist, retain suction points with higher flatness. If the spacing is too large, add new candidate areas (re-evaluating their flatness) in the blank areas between two suction points and add new suction points. Finally, ensure that the coverage of all suction points evenly covers the area of ​​the product that needs adsorption, and that the total number meets the adsorption force requirements corresponding to the product weight (the greater the weight, the more suction points are needed). Finally, determine the suction point pairs and integrate all optimized suction points into a single suction location.

[0065] Step 51: When performing jet separation on the product at the target jet position at the operation point, obtain the tilt angle of the product; The tilt angle refers to the angle formed by the entire product when the product is separated from the target jet position.

[0066] Using an industrial camera, separate images of the product and mold and images of the product and mold in place are obtained. The in-place image is used as a reference image to register the separate images, eliminating the influence of shooting angle and position offset, and ensuring that the coordinate systems of the two images are consistent. Features with high rigidity and resistance to deformation in the separate image are selected and matched with feature points in the in-place image. The contours of the product in the in-place and separate images are extracted and compared, and the difference is the tilt angle.

[0067] Step 52: Determine the reference angle, lifting force, and adhesion position based on product information; The reference angle refers to the angle value used to determine whether the product and the mold are sticking, based on the product material; the lifting force refers to the force exerted by the air nozzle when it pushes the product upward at the target air jet position, which should be strong enough to increase the tilt angle of the product while avoiding damage to the product edges; the adhesion location refers to the specific area where the product and the mold stick together.

[0068] Determine the reference angle for mold and product separation, the lifting force of the air vent, and the adhesion position of mold and product connection based on product information.

[0069] When lifting, the air vent should not blow air, and physical lifting should be performed.

[0070] Step 530: If the tilt angle is greater than the reference angle, the verification is complete; Verification refers to the process of determining whether the current posture of a product meets the suction cup adsorption conditions by comparing the actual tilt angle of the product with the reference angle.

[0071] When the angle of physical warping between the product and the mold at the air outlet is greater than the reference angle, the verification process is completed and the next step is performed.

[0072] Step 531: If the tilt angle is not greater than the reference angle, obtain the contact temperature at the adhesion position; Contact temperature refers to the real-time temperature of the product surface at the bonding location where it contacts the mold, as detected by a temperature sensor.

[0073] When the angle of physical warping between the product and the mold at the air vent is not greater than the reference angle, use an infrared thermal imager to scan the adhesion position and obtain the contact temperature.

[0074] Step 5320: If the contact temperature is not lower than the preset reference temperature, use the lifting force to lift upwards at the target air jet position until the tilt angle is greater than the reference angle, and obtain the product image at the adhesion position. Product images refer to partial images of the adhesion locations captured by a visual inspection device; When the contact temperature is not lower than the preset reference temperature, the product adhesion position is in a high temperature state and can be pried up by external force. At this time, use the air nozzle to pry upward with the prying force to the target air jet position until the tilt angle of the prying is greater than the reference angle, and then use an industrial camera to obtain an image of the product in the adhesion position.

[0075] Step 5330: If the product image matches the preset benchmark product features, clean the adhesion location by blowing air. Preset benchmark product characteristics refer to information derived from product information that is consistent with the product's material, color, etc. If the product image captured by the industrial camera is completely consistent with the preset product characteristics (including material, color, structure, etc.), it indicates that there are impurities adhering to the surface of the mold. At this time, the blowing device is activated, and airflow is sprayed at the adhering position to blow away the residual material.

[0076] Step 5331: If the product image is inconsistent with the preset benchmark product features, the verification is completed.

[0077] If the product image does not match the preset product features, it means that there is no product residue on the surface of the mold, and the verification is completed.

[0078] Step 53301: Obtain adhesion image information at the adhesion location; Adhesion image information refers to high-resolution image data of the adhered material at the adhesion location, captured by an industrial camera. Images and locations of adhesive residue on the product at adhesion sites are captured using a high-definition camera.

[0079] Step 53302: Determine the abnormal location and the recycling location based on the adhesion image information and the preset benchmark product characteristics; Abnormal locations refer to areas identified from adhesion image information that deviate from preset benchmark product characteristics, specifically the precise coordinate areas where the adhesive adheres to the product or mold; recycling locations refer to preset areas used to collect residual materials or defective product fragments generated after cleaning abnormal locations.

[0080] Based on the adhesion image information and product characteristics, the location of the adhesion, i.e. the abnormal location, can be determined, and the retrieval location can be identified by the retrieval suction tube.

[0081] Step 53303: Determine the picking parameters based on the abnormal location and preset product parameters; The tackling parameters are operational parameters used to clean abnormal locations, determined based on the coordinates of the abnormal location, the size of the adhesive, and the product material. These parameters include tackling force, tackling path, and number of tackling attempts.

[0082] The stirring parameters can be calculated based on the abnormal location and product parameter information.

[0083] Provocativeness: If the abnormal location is in a non-precision area of ​​the mold steel material, and the residual material is large (e.g., 5mm in diameter), the lifting force can be appropriately increased (e.g., 5N) to ensure that the residual material falls off. If the abnormal location is on the high-precision surface of the aluminum alloy mold, or near the thin wall / buckle of the product (which is easy to break), the lifting force should be reduced (e.g., 1-2N) to avoid damage. If the residue is a "thin film with light adhesion", the force can be reduced to 0.5N, and it can be separated with just a slight touch.

[0084] Provocation path: If the abnormal location is on the inclined surface of the inner shrink block 2000 in the mold (refer to the mold structure), the picking path should be along the tangent direction of the inclined surface (such as gently picking from the bottom to the top of the inclined surface) to avoid scratching the surface of the inner shrink block 2000 by applying force perpendicular to the inclined surface. If the abnormal position is close to the slider joint, the path needs to bypass the joint (e.g., start picking from 5mm away from the joint) to prevent the picking head from getting stuck in the joint and affecting the slider movement. The path length is usually set to "1.5 times the diameter of the slag" (e.g., if the slag diameter is 2mm, the path length is 3mm) to ensure that the entire slag is covered.

[0085] Number of provocations: For "residual material that can be separated with a single stirring" (such as overflowing material with raised edges), setting it to 1-2 times is sufficient; For "tightly adhered residue" (such as injection mold residue fused to the mold surface), you can set 3 to 5 times (with an interval of 0.5 seconds each time) to gradually loosen the residue; If the abnormal location is on the product surface (rather than the mold), the number of times must be strictly controlled (≤3 times) to avoid repeated touching that may leave marks on the product surface.

[0086] Step 53304: Tick the product according to the picking parameters and suck the product back at the recycling location.

[0087] The preset prying pin is controlled according to the prying parameters to pry the sticky material, and the prying residue is absorbed by the retrieval suction tube at the retrieval position.

[0088] Step 53305: After picking up the product according to the picking parameters, if the abnormal position remains unchanged, determine the melting temperature based on the abnormal position and product information; Melting temperature refers to the temperature value at which adhesives can be melted without damaging the product and mold.

[0089] The dial is used to pry the product according to the prying parameters. If an abnormal position still appears after prying, it means that the prying cannot clean it. Further melting and cleaning are required, and the melting temperature must be determined.

[0090] Step 53306: Obtain the distance information from the starting point to the abnormal location, filter out the nearest distance point and define it as the melting location, and determine the collection location based on the melting location; The melting location refers to the location where the residue is melted using a hot melt gun, and this melting location is closest to the starting point; the collection location refers to the location where the residue is collected by suction through the recovery suction tube.

[0091] The distance information from the laser detection start point to the abnormal location is used to filter out the closest distance. The melting position is the location with a 10-15mm melting space reserved at the end closest to the abnormal location. The collection position is the location opposite the melting position, which is the location of the air suction tube.

[0092] Step 53307: Heat the abnormal location at the melting temperature at the melting location, and simultaneously collect the gas at the collection location.

[0093] The hot melt gun and the blower are integrated into one unit, with the nozzle of the hot melt gun in the middle and multiple blower nozzles around it.

[0094] Move the hot melt gun to the melting position and heat it at a high temperature towards the abnormal position to melt the residue into a molten liquid. At the same time, move the recovery suction pipe to the collection position to absorb the molten residue. The recovery suction pipe is made of high temperature resistant material.

[0095] Step 54: Determine the product parameters, flipping parameters, load-bearing points, and support parameters based on the product information. Determine the flipping method based on the product parameters. The flipping method includes a clamping flipping method and a support flipping method. Product parameters refer to the physical characteristic parameters extracted from product information, including product dimensions and weight; flipping parameters refer to the parameters used to control the flipping action of the product, including flipping angle, flipping speed, and acceleration during the flipping process. These parameters need to be set in conjunction with the product parameters to prevent the product from falling off or deforming during flipping; key bearing points refer to the critical points on the product surface that can withstand support forces. Support parameters refer to the support condition parameters that match the key bearing points, including the magnitude of the force of the support device, the contact area, and the accuracy of the support position. These parameters must ensure that the product surface is not damaged during support and that the product can be stably supported after flipping; flipping methods refer to the operation methods determined based on product parameters for adjusting the product from its demolding posture to its subsequent processing or storage posture. These methods are divided into two types: clamping flipping and support flipping, which are suitable for products with different structural strengths.

[0096] The clamping and flipping method refers to the method of directly flipping the product by clamping it with a suction cup and a blower tube. It is suitable for products with small weight.

[0097] The support-flipping method refers to the method of flipping a product by using the negative air pressure of a suction cup and the support of a blower tube. It is suitable for heavy products.

[0098] Step 540: Based on the top-tightening and flipping method, flip the product at the operation point according to the flipping parameters, and transport it to the preset placement area after flipping; The placement area refers to the designated area used to store the flipped and unloaded products.

[0099] Based on the top-tightening and flipping method, the suction cup and the blowing pipe are controlled to clamp and adsorb the product at the operation point, and flipped according to the flipping parameters. Finally, the product is transported to the placement area through the discharge path.

[0100] Step 541: Based on the support flipping method, the product is adsorbed and flipped according to the air suction position at the operation point according to the flipping parameters, and the product is blown and slid according to the target air jet position at the operation point according to the flipping parameters until it reaches the support point, and then transported to the preset placement area after flipping.

[0101] Based on the top-tight flipping method, the suction cup and the blower are controlled to clamp and adsorb the product at the operation point. When the suction cup adsorbs the product and flips it according to the flipping parameters, the blower is simultaneously controlled to move downward in the flipping direction until it is aligned with the product's bearing point. When the flipping is completed, the suction cup is controlled to adsorb the product, and the blower is controlled to support the product at the product's bearing point to transport the product to the placement area.

[0102] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A method for ejecting a molded plastic cap injection mold with a built-in multi-sloping top slider, comprising an upper mold and a lower mold, characterized in that, The upper mold includes an upper template and an upper mold shell fixed on the upper template for product injection molding; The lower mold includes a first module, a second module, and an inner retraction module for product demolding; The first module includes a lower mold shell that cooperates with the upper mold shell and is used for product injection molding, and a placement plate disposed in the first module for placing and limiting the lower mold shell; The second module includes a base plate, fixed plates symmetrically arranged on the base plate for connection and fixation, a movable plate arranged on the fixed plate, and a stationary plate arranged between the base plate and the movable plate; The lower mold shell includes an inner shrinking block fixed on a moving plate, an outer shrinking block disposed on the inner shrinking block, and a ridge shrinking block. The outer shrinking block and the ridge shrinking block are alternately arranged to jointly enclose the molding cavity of the product. The inner shrinking block is disposed in the molding cavity, and the outer shrinking block is slidably connected to the inclined surface of the inner shrinking block. The base plate drives the fixed plate to descend to control the moving plate to move downward. The inner shrinking module controls the inner shrinking block to descend and then controls the outer shrinking block and the edge shrinking block to converge inward in order to achieve product demolding. The shrinking module also includes a shrinking mechanism fixed on the stationary plate for shrinking the shrinking block. The prismatic contraction mechanism includes a support rod connecting the prismatic contraction block and the stationary plate. After the outer contraction block converges inward, it drives the stationary plate to move upward. The support rod moves along the prismatic direction, causing the prismatic contraction block to converge inward. include: Step 1: Retrieve product information in response to trigger information; Step 2: Determine the cooling method based on the product information and cool and solidify the product. Determine the suction position, jet position, and discharge path based on the product information. Step 3: Draw a perpendicular line from the inhalation position to obtain the support position, find the position that coincides with the support position from the jet positions and define it as the target jet position; Step 4: Calculate the distance between the target jet position and the preset start point and filter out the closest distance. Define the target jet position and the intake position corresponding to the closest distance as the operation point. Step 5: Based on the target jet position at the operation point, the product is separated by jetting; based on the suction position at the operation point, the product is adsorbed and clamped; and discharged through the discharge path. Step 5 also includes a verification method for the product before adsorption and clamping, the verification method including: Step 51: When performing jet separation on the product at the target jet position at the operation point, obtain the tilt angle of the product; Step 52: Determine the reference angle, lifting force, and adhesion position based on product information; Step 530: If the tilt angle is greater than the reference angle, the verification is complete; Step 531: If the tilt angle is not greater than the reference angle, obtain the contact temperature at the adhesion position; Step 5320: If the contact temperature is not lower than the preset reference temperature, use the lifting force to lift upwards at the target air jet position until the tilt angle is greater than the reference angle, and obtain the product image at the adhesion position. Step 5330: If the product image matches the preset benchmark product features, clean the adhesion location by blowing air. Step 5331: If the product image is inconsistent with the preset benchmark product features, the verification is complete; Step 54: Determine the product parameters, flipping parameters, load-bearing points, and support parameters based on the product information. Determine the flipping method based on the product parameters. The flipping method includes a clamping flipping method and a support flipping method. Step 540: Based on the top-tightening and flipping method, flip the product at the operation point according to the flipping parameters, and transport it to the preset placement area after flipping; Step 541: Based on the support flipping method, the product is adsorbed and flipped according to the air suction position at the operation point according to the flipping parameters, and the product is blown and slid according to the target air jet position at the operation point according to the flipping parameters until it reaches the support point, and then transported to the preset placement area after flipping.

2. The demolding method of a built-in multi-sloping top slider plastic cover injection mold according to claim 1, characterized in that, The retraction module includes a retraction mechanism fixed on a stationary plate for the retraction block to slide up and down. The inward retraction mechanism includes a vertical rod fixed to the stationary plate and passing through the inward retraction block and the moving plate, a limiting block set on the vertical rod and used to restrict the inward retraction block from sliding out of the vertical rod, a fixing seat embedded in the stationary plate and fixed to the vertical rod, and a fixing member embedded in the moving plate and allowing the vertical rod to slide through. The inner shrink block is provided with a limiting groove that cooperates with the limiting block. The vertical rod passes through the inner shrink block from top to bottom, so that the top of the limiting block is flush with the top of the inner shrink block. The fixing seat is provided with a fixing hook. The side of the vertical rod away from the limiting block is provided with a fixing groove for fixing with the fixing hook. When the base plate moves downward, the stationary plate remains relatively stationary, while the inward-shrinking block is controlled to rise and fall on the vertical rod.

3. The demolding method of a built-in multi-sloping top slider plastic cover injection mold according to claim 1, characterized in that, The inner shrinking module also includes a sliding mechanism for the outer shrinking block to slide inward on the inner shrinking block, and the sliding mechanism is disposed between the inner shrinking block and the outer shrinking block. The inner shrinking block is provided with an inner shrinking inclined surface, and the outer shrinking block is provided with an outer shrinking inclined surface that guides the inner shrinking inclined surface. The sliding mechanism includes a slide block fixed on the inner inclined surface of the inner retracting block and a slide bar embedded on the outer inclined surface of the outer retracting block. The slide bar is symmetrically arranged and slidably connected to the slide block. The slide bar includes a fixed part that fits into and is connected to the outer shrink block, and a sliding part that slides and is connected to the slide base. The slide base is provided with a sliding groove for the sliding part to slide and connect. The inner retraction block is provided with a placement groove for mounting the slide block; As the moving plate drives the inner shrinking block to descend, the outer shrinking block is limited by the placement plate and converges inward along the slide.

4. The demolding method of a built-in multi-sloping top slider plastic cover injection mold according to claim 1, characterized in that, The prismatic reduction mechanism also includes a support rod connecting the prismatic reduction block and the stationary plate, a guide block located at the bottom of the first module for the support rod to pass through, a limiting ring located on the placement plate for fitting the support rod and for limiting the prismatic reduction block, and a connecting seat for fixing the support rod to the stationary plate. The connecting seat includes a base fixed to a stationary plate and used to connect the support rod and the stationary plate, a sliding block slidably connected in the base, and a connecting block for mounting the support rod on the sliding block; the connecting seat has a sliding groove for the sliding block to slide and a connecting groove for the connecting block to slide. The first module has a through hole for the support rod to pass through, the movable plate has a long groove for the support rod to slide through, the upper end of the through hole is inclined along the direction of the support rod, and the movable plate has a receiving groove for accommodating the placement of the connecting seat. The bottom of the first module is provided with a stabilizing groove for the guide block to be accommodated, and a support spring is provided between the moving plate and the first module; The base plate first drives the moving plate to descend, causing the moving plate to move towards the stationary plate. The support spring on the moving plate supports the first module upward, keeping the first module fixed. The downward movement of the moving plate drives the long waist groove to contact the support rod. Then, it drives the stationary plate to move upward and moves the connecting seat into the receiving groove. Under the push of the long waist groove and the holding of the guide block, the support rod synchronously controls the sliding block to slide and gather inward.

5. The demolding method of a built-in multi-sloping top slider plastic cover injection mold according to claim 1, characterized in that, In step 2, the method for determining the inhalation position includes: Step 21: Obtain distance slice information of the product surface and integrate different distance slice information into three-dimensional data information; Step 22: Determine the flatness of the product surface based on the 3D data information and the preset reference plane; Step 230: If the flatness is less than the preset benchmark flatness, then determine the suction point based on the adsorption area and flatness, and merge all suction points into a suction position.

6. The demolding method of a built-in multi-sloping top slider plastic cover injection mold according to claim 1, characterized in that, In step 5330, after blowing air at the adhesion location, when the product image matches the preset benchmark product features, the process further includes: Step 53301: Obtain adhesion image information at the adhesion location; Step 53302: Determine the abnormal location and the recycling location based on the adhesion image information and the preset benchmark product characteristics; Step 53303: Determine the picking parameters based on the abnormal location and preset product parameters; Step 53304: Tick the product according to the picking parameters and suck the product back at the recycling location.

7. The demolding method of a built-in multi-sloping top slider plastic cover injection mold according to claim 6, characterized in that, After the product is stirred in step 53304, the following steps are also included: Step 53305: After picking up the product according to the picking parameters, if the abnormal position remains unchanged, determine the melting temperature based on the abnormal position and product information; Step 53306: Obtain the distance information from the starting point to the abnormal location, filter out the nearest distance point and define it as the melting location, and determine the collection location based on the melting location; Step 53307: Heat the abnormal location at the melting temperature at the melting location, and simultaneously collect the gas at the collection location.

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