A water tank shell connecting plate accurate positioning mold and positioning method thereof

Abstract

A precise positioning mold for a water tank shell connecting plate and a positioning method thereof, comprising positioning pins, the positioning pins comprising connecting plate positioning pins and shell positioning pins, the connecting plate positioning pins being used for positioning the connecting plate on the mold, and the shell positioning pins being used for positioning the shell on the mold; by providing positioning pins, the connecting plate and the shell are limited in the length direction, thereby ensuring the alignment accuracy of the connecting plate and the shell; at the same time, a grabbing portion is provided to improve the fit of the connecting plate in the pressing groove, thereby preventing the connecting plate from shifting when the shell is folded; the present invention can improve the stability of the molding process and the qualified rate of the bite buckle; in the production process of the shell cylinder, the connecting plate is stably positioned without displacement, thereby ensuring the molding effect and relative position; the positioning process of the connecting plate is convenient, efficient and safe.

Description

Technical Field

[0001] The invention relates to the technical field of parts processing equipment, in particular to an accurate positioning mold for a water tank shell connecting plate and a positioning method thereof. Background Art

[0002] During the current production process, the outer shell needs to be processed into a cylindrical structure, which consists of a connecting plate and an outer shell to form a complete cylindrical outer shell with a certain connection strength. However, there are still problems with the structure during the processing. The structure uses a stamping die to fold and snap together two sheet metal parts. In order to ensure the overall appearance and connection strength of the outer shell, the relative position of the connecting plate and the outer shell must be fixed, and the error cannot exceed 1mm.

[0003] However, at present, during the buckling process, the connecting plate cannot be accurately positioned. During the buckling operation of the water tank shell, the edge of the shell is aligned manually by personnel, which is prone to positioning errors and causes shell misalignment. During the positioning process, the connecting plate is placed first, and then the folded edge of the shell is hooked into the connecting plate. However, at this time, the operator can only hold both sides of the shell at the same time and cannot directly adjust the position of the connecting plate, making it difficult to eliminate position errors. During operation, the connecting plate is prone to tipping over due to improper operation and needs to be readjusted, affecting operating efficiency and increasing labor intensity. During the buckling process, the equipment vibrates to a certain extent, and the connecting plate is light in weight, so it is easy to jump and move, causing buckle misalignment or even deformation. The connecting plate is a slender sheet metal part with a certain straightness error, and cannot fully fit the pressing groove, which increases the dimensional error fluctuation. All of the above will cause the shell structure to shift, resulting in poor quality. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a water tank shell connecting plate accurate positioning mold and a positioning method thereof.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a water tank shell connecting plate accurate positioning mold, including positioning pins, the positioning pins include connecting plate positioning pins and shell positioning pins, the connecting plate positioning pins are used to position the connecting plate on the mold, and the shell positioning pins are used to position the shell on the mold.

[0006] As a further improvement of the present invention: the positioning mold comprises an upper mold, a middle mold and a lower mold, and a pressing groove is provided above the middle mold.

[0007] As a further improvement of the present invention: the pressing groove is a groove structure.

[0008] As a further improvement of the present invention: the width of the pressed groove is the outer diameter of the connecting plate + 0.5-1 mm.

[0009] As a further improvement of the present invention: the depth of the groove is 0.75-2.5 mm.

[0010] As a further improvement of the present invention: the depth of the groove is 1.5 mm.

[0011] As a further improvement of the present invention: the pressing groove limits the width of the connecting plate.

[0012] As a further improvement of the present invention: the positioning pin is arranged on the middle mold.

[0013] As a further improvement of the present invention: a spring is installed at the bottom of the positioning pin.

[0014] As a further improvement of the present invention: it also includes a grabbing portion, and the grabbing portion is arranged on the middle mold.

[0015] As a further improvement of the present invention: the grabbing portion is a fixed magnet or a vacuum suction cup.

[0016] As a further improvement of the present invention: the grabbing portion is arranged at the bottom of the medium pressure tank.

[0017] As a further improvement of the present invention: it also includes a limiting portion, and the limiting portion is arranged on the middle mold.

[0018] As a further improvement of the present invention: the limiting portion is a side stop pin, and the side stop pin is arranged on the left side or the right side of the pressing groove or on both the left and right sides.

[0019] As a further improvement of the present invention: a shell folding mold is provided at the bottom of the middle mold, and the shell folding mold includes a left folding block and a right folding block.

[0020] As a further improvement of the present invention: the lower mold is provided with a shell folding seat, and the shell folding seat includes a left folding seat and a right folding seat.

[0021] As a further improvement of the present invention: the shell folding mold and the shell folding seat are embedded.

[0022] As a further improvement of the present invention: the left folding block is engaged with the left folding seat, and the right folding block is engaged with the right folding seat.

[0023] As a further improvement of the present invention: the connecting plate is made of sheet metal material or non-metallic material.

[0024] As a further improvement of the present invention: the fixed magnet adopts N35 magnet with a specification of φ8mm×8mm, and the magnetic force is about 600 times the weight of the magnet. The magnetic force of a single magnet = volume*density*g*600=3.14*4*4*8*0.0075*10^3*10*600=18N.

[0025] As a further improvement of the present invention: the fixed magnets are arranged in a multi-point evenly distributed manner to control the critical friction to be around 20N, so the number of magnets is preferably determined to be 8.

[0026] The present invention also provides a method for accurately positioning a mold for a water tank shell connecting plate, comprising the following steps:

[0027] 1) Fold the shell and place the connecting plate in the groove of the middle mold;

[0028] 2) Push the connecting plate to one end to press against the connecting plate positioning pin;

[0029] 3) Hook the folded edge of the shell into the opening of the connecting plate and tighten it;

[0030] 4) Push the housing to one end against the housing positioning pin;

[0031] 5) Press the upper mold down to complete the buckling of the shell and the connecting plate.

[0032] As a further improvement of the present invention: wherein the shell folding in step 1) includes the following steps: the right edge of the shell on the left is inserted into the left folding seat, the left edge of the shell on the right is inserted into the right folding seat, and the middle mold is pressed down to fold the edge of the shell.

[0033] As a further improvement of the present invention: in step 2), the length of the connecting plate is limited in the pressing groove by positioning pins.

[0034] As a further improvement of the present invention: wherein in step 2), the connecting plate is in the pressing groove, the width of the pressing groove is the outer diameter of the connecting plate, and the pressing groove limits the width of the connecting plate.

[0035] As a further improvement of the present invention: wherein in step 2), the connecting plate is fixed in the pressing groove by a grabbing portion.

[0036] As a further improvement of the present invention: in step 3), the folded edge of the shell is prevented from turning over sideways by a limiting portion.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1. The positioning accuracy between the connecting plate and the housing is ensured by the limit device;

[0039] 2. At the same time, the magnetic design is used to improve the fit of the connecting plate in the pressing groove;

[0040] 3. Improve the stability of the forming process and increase the qualified rate of biting;

[0041] 4. It can ensure that the connection plate is stable and does not move during the production process of the outer shell cylinder, ensuring the molding effect and relative position; the positioning process of the connection plate is convenient, efficient and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the shell connection structure of the prior art.

[0043] Figure 2 A schematic diagram of shell connection error in the prior art.

[0044] Figure 3 It is a schematic diagram of the top view of the structure of the mold in the present invention.

[0045] Figure 4 It is a structural schematic diagram of the mold and the connecting plate in the present invention.

[0046] Figure 5 It is a schematic diagram of the limiting structure of the connecting plate of the present invention.

[0047] Figure 6 It is a schematic diagram of the limiting structure of the limiting part of the present invention.

[0048] Figure 7 It is a schematic diagram of the positioning pin and the limiting structure of the housing of the present invention.

[0049] Figure 8 It is a schematic diagram of the buckle structure of the present invention.

[0050] Fig. 9 It is a schematic diagram of the folding structure of the middle mold and the lower mold of the present invention.

[0051] Fig.10 This is a schematic diagram of the structure of the second implementation example of the present invention.

[0052] In the figure: 1, shell, 2, positioning pin, 3, connecting plate, 51, upper mold, 52, middle mold, 53, lower mold, 6, grabbing part, 61, fixed magnet, 7, limiting part, 71, side stop pin, 8, shell folding mold, 9, shell folding seat. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0054] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or apparatus.

[0055] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by terms such as "above", "below", "top surface", "bottom surface", "left", and "right" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention. Therefore, they cannot be understood as limiting the actual use direction of the present invention.

[0056] like Figure 1~2 As shown in FIG. 1 , it is a connection structure diagram of the shell in the prior art, such as Figure 1 As shown, the structure consists of a connecting plate 3 and a shell 1, forming a complete cylindrical shell with a certain connection strength; however, there are still problems with the structure during processing; the structure uses a stamping die to fold and snap together two sheet metal parts; in order to ensure the overall appearance and connection strength of the shell, the relative position of the connecting plate 3 and the shell 1 must be fixed, and the error cannot exceed 1mm; currently, during the snapping process, the connecting plate 3 cannot be accurately positioned, and during the pressing operation of the water tank shell, the edge of the shell 1 is manually aligned by personnel, which is prone to alignment errors and causes the shell 1 to be misaligned; as shown in FIG. Figure 2 As shown, during the positioning process, the connecting plate 3 is placed first, and then the folded edge of the housing 1 is hooked into the connecting plate 3; however, at this time, the operator can only hold both sides of the housing 1 at the same time, and cannot directly adjust the position of the connecting plate 3, so the position error is difficult to eliminate.

[0057] The present invention is further described with reference to the accompanying drawings and embodiments: Figures 3 to 10 The shown invention discloses an accurate positioning mold for a water tank shell connecting plate and a positioning method thereof.

[0058] Among them, a water tank shell connecting plate accurate positioning mold includes an upper mold 51, a middle mold 52 and a lower mold 53. A pressing groove 54 is provided above the middle mold 52, and it also includes a positioning pin 2. The positioning pin 2 includes a connecting plate positioning pin 21 and a shell positioning pin 22. The connecting plate positioning pin 21 is used to position the connecting plate 3 on the mold, and the shell positioning pin 22 is used to position the shell 1 on the mold.

[0059] The pressing groove 54 is a groove structure; the width of the pressing groove 54 is the outer diameter of the connecting plate 3 + 0.5-1 mm; the depth of the pressing groove 54 is 0.75-2.5 mm.

[0060] In a specific implementation, the depth of the groove 54 is 1.5 mm.

[0061] It also includes a grabbing portion 6 , which is disposed on the middle mold 52 ; the grabbing portion 6 is a fixed magnet 61 or a vacuum suction cup; and the grabbing portion 6 is disposed at the bottom of the middle pressure groove 54 .

[0062] In a specific implementation, a spring is installed at the bottom of the positioning pin 2 .

[0063] In a specific embodiment, the fixed magnet 61 adopts an N35 magnet with a specification of φ8mm×8mm, and the magnetic force is about 600 times the weight of the magnet. The magnetic force of a single magnet = volume*density*g*600=3.14*4*4*8*0.0075*10-3*10*600=18N; the fixed magnet 61 adopts a multi-point evenly distributed arrangement to control the critical friction at about 20N, so the number of magnets is preferably determined to be 8.

[0064] It also includes a limiting portion 7 , which is arranged on the middle mold 52 ; the limiting portion 7 is a side stop pin 71 , which is arranged on the left side or the right side or both sides of the pressing groove 54 .

[0065] Furthermore, a shell folding mold 8 is provided at the bottom of the middle mold 52, and the shell folding mold 8 includes a left folding block and a right folding block.

[0066] Furthermore, the lower mold is provided with a shell folding seat 9, and the shell folding seat includes a left folding seat and a right folding seat.

[0067] Furthermore, the shell folding mold 8 and the shell folding seat 9 are embedded; the left folding block is embedded with the left folding seat, and the right folding block is embedded with the right folding seat.

[0068] In a specific implementation, the connecting plate 3 is made of sheet metal material, and the grabbing portion 6 is a fixed magnet 61 .

[0069] In a specific implementation, the connecting plate 3 is made of non-metallic material, and the gripping portion 6 is a vacuum suction cup.

[0070] The present invention includes a positioning method for accurately positioning a mold for a water tank shell connecting plate, comprising the following steps:

[0071] 1) Fold the shell and place the connecting plate in the groove of the middle mold;

[0072] 2) Push the connecting plate to one end to press against the connecting plate positioning pin;

[0073] 3) Hook the folded edge of the shell into the opening of the connecting plate and tighten it;

[0074] 4) Push the housing to one end against the housing positioning pin;

[0075] 5) Press the upper mold down to complete the buckling of the shell and the connecting plate.

[0076] Furthermore, the shell folding in step 1) includes the following steps: inserting the right edge of the shell on the left into the left folding seat, inserting the left edge of the shell on the right into the right folding seat, pressing the middle mold downward to fold the shell edge.

[0077] Furthermore, in step 2), the connecting plate is limited in length in the pressing groove by a positioning pin; in step 2), the connecting plate is in the pressing groove, the width of the pressing groove is the outer diameter of the connecting plate, and the pressing groove limits the width of the connecting plate; in step 2), the connecting plate is fixed in the pressing groove by a grabbing portion.

[0078] Furthermore, in step 3), the folded edge of the shell is prevented from turning over laterally by a limiting portion.

[0079] Implementation case 1:

[0080] A water tank shell connecting plate accurate positioning mold and positioning method thereof, the water tank shell connecting plate accurate positioning mold positioning mold comprises an upper mold 51, a middle mold 52, a lower mold 53, a positioning pin 2 and a grabbing portion 6, a pressing groove 54 is provided above the middle mold, the positioning pin comprises a connecting plate positioning pin 21 and a shell positioning pin 22, a spring is installed at the bottom of the positioning pin, the connecting plate positioning pin is used for positioning the connecting plate 3 on the mold, the shell positioning pin is used for positioning the shell 1 on the mold, the pressing groove is a groove structure, and the width of the pressing groove is the outer diameter of the connecting plate + 0.5mm, The depth of the groove is 1.5mm, the connecting plate is made of sheet metal material, the grabbing part is arranged on the middle mold, the grabbing part is a fixed magnet 61, the fixed magnet adopts an N35 magnet with a specification of φ8mm×8mm, the magnetic force is about 600 times the weight of the magnet, the magnetic force of a single magnet = volume * density * g * 600 = 3.14 * 4 * 4 * 8 * 0.0075 * 10-3 * 10 * 600 = 18N, the fixed magnet adopts a multi-point uniform distribution arrangement, the number of magnets is preferably 8, the limiting part is a side stop pin 71, such as Figure 6 As shown, the side stop pin is arranged on the left or right side of the pressing groove, and the bottom of the middle mold is provided with a shell folding mold 8, and the shell folding mold includes a left folding block and a right folding block. The lower mold is provided with a shell folding seat 9, and the shell folding seat includes a left folding seat and a right folding seat. The shell folding mold and the shell folding seat are engaged.

[0081] The method for accurately positioning the mold using the water tank shell connecting plate includes the following steps:

[0082] 1) Place the water tank shell on the shell folding seat of the lower mold, press the middle mold and the lower mold together to complete the shell folding;

[0083] 2) Place the connecting plate in the groove of the middle mold;

[0084] 3) Push the connecting plate to one end to press against the connecting plate positioning pin;

[0085] 4) Hook the folded edge of the shell into the opening of the connecting plate and tighten it;

[0086] 5) Push the housing until one end is against the housing positioning pin;

[0087] 6) Press the upper mold down to complete the buckling of the shell and the connecting plate.

[0088] Among them, in step 2), the connecting plate is fixed to the pressing groove by a fixed magnet, and the connecting plate and the pressing groove are fixed by magnetic attraction, ensuring that the connecting plate will not move laterally, and preventing the connecting plate from sliding and misaligning in the groove; in step 3), the connecting plate positioning pin limits the length of the connecting plate; in step 4), the outer shell prevents the connecting plate from tipping over by the side stop pin; in step 5), the outer shell is limited by the outer shell positioning pin.

[0089] Implementation case 2:

[0090] A water tank shell connecting plate accurate positioning mold and positioning method thereof, the water tank shell connecting plate accurate positioning mold positioning mold comprises an upper mold 51, a middle mold 52, a lower mold 53, a positioning pin 2 and a grabbing portion 6, a pressing groove 54 is provided above the middle mold, the positioning pin comprises a connecting plate positioning pin 21 and a shell positioning pin 22, a spring is installed at the bottom of the positioning pin, the connecting plate positioning pin is used for positioning the connecting plate 3 on the mold, the shell positioning pin is used for positioning the shell 1 on the mold, the pressing groove is a groove structure, the width of the pressing groove is the outer diameter of the connecting plate + 0.5mm, the depth of the pressing groove is 1.5mm, the connecting plate is made of non-metallic material, the grabbing portion is arranged on the middle mold, the grabbing portion is a vacuum suction cup, the limiting portion is a side stop pin 71, as shown in Fig.10 As shown, the side stop pins are arranged on the left and right sides of the pressing groove at the same time, and a shell folding mold 8 is provided at the bottom of the middle mold, and the shell folding mold includes a left folding block and a right folding block. The lower mold is provided with a shell folding seat 9, and the shell folding seat includes a left folding seat and a right folding seat. The shell folding mold and the shell folding seat are engaged.

[0091] The method for accurately positioning the mold using the water tank shell connecting plate includes the following steps:

[0092] 1) Place the water tank shell on the shell folding seat of the lower mold, press the middle mold and the lower mold together to complete the shell folding;

[0093] 2) Place the connecting plate in the groove of the middle mold;

[0094] 3) Push the connecting plate to one end to press against the connecting plate positioning pin;

[0095] 4) Hook the folded edge of the shell into the opening of the connecting plate and tighten it;

[0096] 5) Push the housing until one end is against the housing positioning pin;

[0097] 6) Press the upper mold down to complete the buckling of the shell and the connecting plate.

[0098] Among them, in step 2), the connecting plate is fixed on the pressing groove by a vacuum suction cup to ensure that the connecting plate does not move laterally and prevent the connecting plate from sliding and dislocating in the groove; in step 3), the connecting plate positioning pin limits the length of the connecting plate; in step 4), the outer shell prevents the connecting plate from tipping over by side stop pins; in step 5), the outer shell is limited by the outer shell positioning pin.

[0099] The main functions of the present invention are:

[0100] By providing a positioning pin, the connection plate and the shell are limited in the length direction, thereby ensuring the alignment accuracy of the connection plate and the shell; at the same time, a grabbing portion is provided to improve the fit of the connection plate in the pressing groove and prevent the connection plate from shifting when the shell is folded; the present invention can improve the stability of the forming process and the qualified rate of the bite buckle; during the production process of the shell cylinder, the position of the connection plate is stable and does not shift, thereby ensuring the forming effect and relative position; the positioning process of the connection plate is convenient, efficient and safe.

[0101] In summary, after reading the present invention document, ordinary technicians in this field can make various other corresponding transformation schemes based on the technical scheme and technical concept of the present invention without creative mental work, which all fall within the scope of protection of the present invention.

Claims

1. A water tank shell connecting plate accurate positioning mold, characterized in that: It includes positioning pins, which include connecting plate positioning pins and shell positioning pins. The connecting plate positioning pins are used to position the connecting plate on the mold, and the shell positioning pins are used to position the shell on the mold; The positioning mold comprises an upper mold, a middle mold and a lower mold, and a pressing groove is provided above the middle mold; The pressing groove is a groove structure; The pressing groove limits the width of the connecting plate; The positioning pin is arranged on the middle mold; The invention also includes a method for accurately positioning a mold for a water tank shell connecting plate, comprising the following steps: 1) Fold the shell and place the connecting plate in the groove of the middle mold; 2) Push the connecting plate to one end to press against the connecting plate positioning pin; 3) Hook the folded edge of the shell into the opening of the connecting plate and tighten it; 4) Push the housing until one end is against the housing positioning pin; 5) Press the upper mold down to complete the buckling of the shell and the connecting plate.

2. The accurate positioning mold for the water tank shell connecting plate according to claim 1 is characterized in that: The utility model also comprises a grasping portion, wherein the grasping portion is arranged on the middle mold.

3. The accurate positioning mold for the water tank shell connecting plate according to claim 2 is characterized in that: The grabbing portion is a fixed magnet.

4. The accurate positioning mold for the water tank shell connecting plate according to claim 2 is characterized in that: The grasping portion is a vacuum suction cup.

5. A water tank shell connecting plate accurate positioning mold according to claim 3 or 4, characterized in that: The grabbing portion is arranged at the bottom of the middle mold pressing groove.

6. The accurate positioning mold for the water tank shell connecting plate according to claim 1, characterized in that: It also includes a limiting portion, which is arranged on the middle mold.

7. The accurate positioning mold for the water tank shell connecting plate according to claim 2 is characterized in that: It is characterized in that In step 2), the connecting plate is fixed in the pressing groove by the grabbing portion.

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