Shell-shaped product demolding mechanism, demolding device and shell-shaped product stretching processing equipment
The demolding mechanism driven by the annular base and cam ring solves the problems of easy wear and high-speed demolding failure in existing metal shell demolding mechanisms, achieving efficient and durable shell demolding, and improving product quality and production efficiency.
Patent Information
- Application Number
- CN202520364560.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-04
AI Technical Summary
Existing metal shell demolding mechanisms suffer from problems such as easy wear of the elastomer, insufficient demolding force, or scratches on the shell by the steel claws, and demolding failure during high-speed operation.
The demolding mechanism consists of a ring base, a guide structure, and a cam ring. The cam ring swings to drive the demolding petals to converge or disperse radially along the base, forming an adjustable punch channel. Combined with elastic elements, it provides adaptive demolding force.
It improves the durability and adaptability of the demolding mechanism, reduces wear on the shell surface, enhances high-speed demolding capability, and improves product quality and production efficiency.
Smart Images
Figure CN223946669U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a shell product demolding mechanism, demolding device and shell product stretching processing equipment especially, belong to mechanical technical field. BACKGROUND
[0002] After the metal shell (pop can, new energy battery shell) is stretched and thinned through the forming ring, the shell will be wrapped on the punch, so a demolding mechanism is needed to separate the shell and the punch.
[0003] The main structure forms of the existing discharge demolding mechanism are as follows: one is to adopt the elastic rubber ring demolding mode, the demolding principle of which is to make the metal shell enter the demolding mechanism and then separate the metal shell from the punch by using the deformation of the elastic body, however, the disadvantage of the demolding mechanism is that the elastic body (i.e. rubber ring) is damaged seriously and needs to be replaced frequently, and the demolding force is small, which is only suitable for stretch forming with small stretching force; the other is steel claw forced demolding, which makes lead-in chamfer and spring reset at the steel claw to achieve the purpose of demolding, however, the disadvantage of the demolding is that the metal shell will contact and rub with the steel claw when entering the demolding mechanism, if the force driving the steel claw to reset is small, it may cause demolding failure; if the force driving the steel claw to reset is too large, it will cause the problem of scratching the metal shell.
[0004] The flexible demolding device for metal hollow body disclosed by CN217858513U converts the axial friction of the product and the rubber ring into the radial movement of the demolding flap through the inclined sliding block, although it reduces the wear of the product and the demolding mechanism, but the wear cannot be avoided; the opening of the demolding flap is passively opened by the product, the timing of opening and closing of the demolding cannot be adjusted, and the closing of the steel claw is through the elastic force of the elastic element; due to the reason that the friction force between the product and the demolding rubber ring cannot be too large, the elastic force cannot be too large; when the equipment is running at high speed, the closing action of the steel claw cannot keep up, resulting in demolding failure. UTILITY MODEL CONTENTS
[0005] The main purpose of the utility model is to provide a shell product demolding mechanism, demolding device and shell product stretching processing equipment, so as to overcome the deficiencies in the prior art.
[0006] In order to achieve the above-mentioned utility model purposes, the technical scheme adopted by the utility model comprises:
[0007] The first aspect of the utility model embodiment provides a shell product demolding mechanism, which comprises:
[0008] An annular base;
[0009] A guide structure is arranged on the base;
[0010] x demoulding petals, x said demoulding petals are arranged in sequence along the circumference of said base, x said demoulding petals enclose a punch channel, said demoulding petals are movably matched with said base, said demoulding petals are limited by said guide structure to only make linear motion along the radial direction of said base;
[0011] a cam ring, said cam ring is arranged around the periphery of x said demoulding petals, said cam ring is movably matched with said base, said cam ring is configured to only make swing rotation along the circumferential direction of said base,
[0012] a resilient element, said resilient element is movably matched with said demoulding petals, said resilient element provides elastic force to keep said demoulding petals in contact with said radial pushing structure group;
[0013] when said cam ring is driven to swing relative to said base, x said demoulding petals are gathered or dispersed along the radial direction of said base under the joint action of said cam ring and said resilient element, the radial cross-sectional area of said punch channel changes between a first radial cross-sectional area and a second radial cross-sectional area, wherein x is greater than or equal to 2.
[0014] A second aspect of an embodiment of the utility model provides a shell-shaped product demoulding device, which comprises the shell-shaped product demoulding mechanism, and a driving mechanism and a transmission mechanism, the driving mechanism is in transmission connection with the cam ring of the shell-shaped product demoulding mechanism through the transmission mechanism and drives the cam ring to swing relative to the base.
[0015] A third aspect of an embodiment of the utility model provides a shell-shaped product stretching processing equipment, which comprises the shell-shaped product demoulding mechanism or the shell-shaped product demoulding device.
[0016] Compared with the prior art, the utility model has the advantages of:
[0017] The plurality of demoulding petals in the novel mechanical transmission type metal shell stretching demoulding mechanism provided by the embodiment of the utility model are independent of each other, and the demoulding petals can select metal members or ceramic members with better hardness, and are more durable and less likely to be damaged.
[0018] The travel and timing of the gathering and dispersion of the demoulding petals in the novel mechanical transmission type metal shell stretching demoulding mechanism provided by the embodiment of the utility model can be adjusted through a cam curve, and further, when the cam follower goes to the travel (it is not necessary to wait until the cam follower returns), the shell opening of the metal shell passes through the punch channel, and the demoulding petals can be gathered to form a demoulding window of the punch channel, so that the demoulding window can be minimized, the main machine travel is effectively saved, the production speed can be higher, and the size of the main machine equipment can be smaller.
[0019] The utility model discloses an embodiment provides a kind of novel mechanical transmission type metal shell stretching demolding mechanism, and demolding petal can axial sliding with axial slider, when the product such as metal shell exists more serious lug, demolding petal can be self-adapting in axial arrangement according to the present situation of lug, as far as possible make demolding petal and product such as metal shell form greater contact area, make product stress uniform, to reduce product mouth part warping when demolding, improve the processing quality of product;And the axial elastic force size of demolding petal can be adjusted by adjusting the air pressure size entering base, more stronger to the adaptability of product. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0021] Figure 1 is a structural schematic diagram of a shell-shaped product stretching machining equipment provided in a typical embodiment case of the utility model;
[0022] Figure 2 is an exploded view of a shell-shaped product demolding mechanism provided in a typical embodiment case of the utility model;
[0023] Figure 3 is a radial section view of a shell-shaped product demolding mechanism provided in a typical embodiment case of the utility model;
[0024] Figure 4 is a structural schematic diagram of a cam transmission structure provided in a typical embodiment case of the utility model. DETAILED DESCRIPTION
[0025] In view of the deficiencies in the prior art, the present inventors have long-term research and a large number of practices, and have come up with the technical scheme of the utility model. The technical scheme, its implementation process and principles will be further explained and described as follows.
[0026] A first aspect of the embodiment of the utility model provides a shell-shaped product demolding mechanism, which comprises:
[0027] annular base;
[0028] guide structure, arranged on the base;
[0029] x demolding petals, x said demolding petals are arranged in sequence along the circumference of said base, x said demolding petals enclose a punch channel, said demolding petals are movably coupled with said base, said demolding petals are limited to linear motion along the radial direction of said base by said guide structure;
[0030] a cam ring, said cam ring is arranged around the periphery of x said demolding petals, said cam ring is movably coupled with said base, said cam ring is configured to swing rotation along the circumferential direction of said base,
[0031] a resilient element, said resilient element is movably coupled with said demolding petals, said resilient element provides a resilient force to keep said demolding petals in contact with said radial advancement structure group;
[0032] when said cam ring is driven to swing rotation relative to said base, x said demolding petals are gathered or dispersed along the radial direction of said base under the joint action of said cam ring and said resilient element, the radial cross-sectional area of said punch channel changes between a first radial cross-sectional area and a second radial cross-sectional area, wherein x≥2.
[0033] Further, x radial advancement structure groups are further arranged on the inner annular surface of said cam ring, x said radial advancement structure groups are arranged along the circumferential direction of said cam ring, said radial advancement structure group comprises a first radial advancement structure and a second radial advancement structure arranged in sequence and abutting along the circumferential direction of said cam ring, each said radial advancement structure group corresponds to one said demolding petal, when said cam ring is driven to swing rotation relative to said base, each said demolding petal alternately contacts said first radial advancement structure and said second radial advancement structure in sequence;
[0034] Further, the maximum distance between said first radial advancement structure and the geometric center of said cam ring is different from the maximum distance between said second radial advancement structure and the geometric center of said cam ring.
[0035] Further, said first radial advancement structure and said second radial advancement structure are integral with said cam ring, said first radial advancement structure is a recess structure formed on the inner annular surface of said cam ring, said second radial advancement structure is a protruding structure formed on the inner annular surface of said cam ring.
[0036] Further, said recess structure and said protruding structure are smoothly connected.
[0037] Further, said base has a notch extending along the circumferential direction of said base, an adapter is fixedly arranged on said cam ring, said adapter is arranged in said notch, said cam ring is limited to swing rotation within the range defined by said notch.
[0038] In a more specific embodiment, the base comprises a ring-shaped base body and a limiting structure fixedly arranged on the end face of the base body, the limiting structure is located at the periphery of the cam ring, and the limiting structure encloses the gap.
[0039] In a more specific embodiment, the limiting structure comprises a non-closed limiting ring, the gap is formed between the two ends of the limiting ring, or the limiting structure comprises two limiting blocks, the two limiting blocks are arranged along the circumference of the base body and are spaced apart, and the gap is formed between the two limiting blocks.
[0040] Further, the guide structure has x guide channels, the x guide channels are arranged in sequence along the circumference of the base, the guide channels extend in the radial direction of the base, each demolding lobe is movably arranged in a guide channel and can only move linearly along the guide channel.
[0041] In a more specific embodiment, the guide structure comprises x axial sliders, the axial sliders are fixedly arranged on the base, each axial slider has a guide channel in the axial slider, the demolding lobe has a hollow cavity in the interior of the demolding lobe, a limiting pin is further arranged on the axial slider, part of the limiting pin extends into the cavity in the interior of the demolding lobe, the limiting pin movably cooperates with the demolding lobe, and the elastic element is arranged in the cavity and located on the side of the limiting pin close to the cam ring, during the movement of the demolding lobe, the pressure generated by the contact between the elastic element and the demolding lobe and the limiting pin causes the demolding lobe to always be in contact with the radial pushing structure group.
[0042] Further, the guide structure is configured to be fixed with the base in the radial direction of the base and movably cooperates with the base in the axial direction of the base.
[0043] Further, the base is provided with a sliding channel extending in the axial direction of the base, part of the axial slider is arranged in the sliding channel, the axial slider cooperates with the base to form a cylinder structure, and the axial slider can move axially relative to the base along the sliding channel.
[0044] The second aspect of the embodiment of the utility model provides a shell-shaped product demolding device, which comprises the shell-shaped product demolding mechanism, and a driving mechanism and a transmission mechanism, the driving mechanism is in transmission connection with the cam ring of the shell-shaped product demolding mechanism through the transmission mechanism, and drives the cam ring to swing and rotate relative to the base.
[0045] In a more specific embodiment, the driving mechanism is a cam driving mechanism, the transmission mechanism comprises a swing rod, a push rod and a fish eye joint, one end of the swing rod is rotationally connected with the equipment bed body, the other end is rotationally connected with the push rod, the swing rod is fixedly connected with a cam follower of the cam driving mechanism, and the push rod is rotationally connected with the cam ring through the fish eye joint.
[0046] The third aspect of the embodiments of the utility model provides a kind of shell product stretch processing equipment, including the shell product stripping mechanism or the shell product stripping device described.
[0047] Further, the shell product stretch processing equipment can be used for stretch processing and stripping work after processing of metal shell and the like products, which can be easy-to-open cans, battery shells and the like.
[0048] The technical solutions, implementation processes and principles will be further explained and described as follows in combination with the drawings and specific implementation cases.
[0049] In a more typical implementation case, please refer to Figure 1 A kind of metal shell stretch processing equipment, including equipment bed body and power module, metal shell stamping forming module, stripping module, etc., metal shell stamping forming module, stripping module are assembled on equipment bed body, stripping module is arranged at one side of metal shell stamping forming module (specifically arranged at the downstream side of metal shell) power module provides power for metal shell stamping forming module, stripping module, metal shell stamping forming module is used to perform the stamping stretch forming work of metal shell, and stripping module is used to stripping work (i.e. make metal shell and metal shell stamping forming module separate) for metal shell after stamping stretch forming.
[0050] It should be noted that the structure of equipment bed body and the specific structure of metal shell stamping forming module and the like are known in the art, which are not specifically limited here.
[0051] Specifically, the structure of the aforementioned metal shell stamping forming module is known in the art, but in order to explain the structure of the stripping module and its implementation of stripping work as follows, the structure of the metal shell stamping forming module is briefly introduced as follows, please refer to Figure 1 again, metal shell stamping forming module mainly includes punch 101 and forming die 11, punch 101 is drivingly connected with power module, and moves along its axial direction under the driving of power module, and punches the material in forming die 11 to form metal shell, and after completing the stamping stretch forming of metal shell, reaches stripping module with metal shell, and cooperates with stripping module to realize the stripping of metal shell (i.e. make metal shell and punch 101 separate). As mentioned above, the structure of the punch 101 and the forming die 11 is known in the art, which is not improved in the utility model, and is not specifically introduced and described here.
[0052] Specifically, please refer to Figure 1 , the power module can include a set of driving mechanism or two sets of driving mechanism, two sets of driving mechanism can be independently configured, but also can be linked, that is, the metal shell stamping forming module, demolding module can be driven by the same set of driving mechanism, or, the metal shell stamping forming module, demolding module can be driven independently by two sets of driving mechanism, or, the metal shell stamping forming module, demolding module can be driven by two sets of driving mechanism linkage.
[0053] Specifically, as follows will mainly introduce the structure of the demolding module (i.e. the foregoing demolding mechanism 10, same below) and how it realizes the demolding of the metal shell.
[0054] Please refer to Figure 1 , Figure 2 and Figure 3 , the demolding module includes a base, a guide structure, x demolding petals 105 and a cam ring 106, the central region of the base is a central channel formed by itself (it can be understood that the base as a whole is a ring structure, preferably a circular ring structure, and the central channel is through along the axial direction of the base), the guide structure is provided on the base, and the guide structure is provided around the central channel. The x demolding petals 105 are provided around the central channel, the demolding petals 105 are movably connected with the guide structure and the base, the demolding petals 105 can only move linearly along the radial direction of the base under the limitation of the guide structure, the cam ring 106 is provided around the periphery of the x demolding petals 105, the cam ring 106 is movably connected with the guide structure and the base, the guide structure is configured to only move axially relative to the base along the axial direction of the base, the cam ring 106 is configured to only swing and rotate along the circumferential direction of the base, the demolding petals 105 extend along the radial direction of the base, one end of the demolding petals 105 is in contact with the cam ring 106, and the other end points to the central channel, the other ends of the x demolding petals 105 collectively form a punch channel 108, and each demolding petal 105 is further connected with the guide structure through a resilient element 114. The resilient element 114 provides a resilient force to keep the one end of the demolding petal 105 in contact with the cam ring 106 at all times;
[0055] When the cam ring 106 is driven to swing and rotate relative to the base, the x demolding petals 105 are driven by the cam ring 106 to gather or disperse along the radial direction of the base, thereby changing the size of the punch channel 108 (the size mainly refers to the radial cross-sectional area of the punch channel 108), wherein x≥2, Figure 2 and Figure 3 x=8 in a typical embodiment shown in
[0056] It can be understood that the punch channel 108 formed by the x number of demolding petals 105 being dispersed apart can allow the punch rod carrying the metal shell to pass, that is, the maximum radial dimension of the punch channel 108 is greater than the radial dimension of the metal shell (here, the radial dimension of the metal shell refers to the dimension of the main body part itself, not including the lug), the punch channel 108 formed by the x number of demolding petals 105 being gathered together can allow the punch rod to pass while preventing the metal shell from passing, that is, the minimum radial dimension of the punch channel 108 is greater than the radial dimension of the punch rod and less than the radial dimension of the metal shell.
[0057] Specifically, the inside of the base is a hollow structure, and the guide structure, the x number of demolding petals 105, and the cam ring 106 are packaged in the inside of the base. Specifically, please refer to Figure 2 , the base includes a base body 110 and two base cover plates 102 / 111, the two base cover plates 102 / 111 are arranged on both sides of the base body 110 along the axial direction of the base, the base cover plates 102 / 111 are fixedly combined with the base body 110, and at least a packaging chamber is enclosed between the base body 110 and one of the base cover plates 102 / 111, the guide structure, the x number of demolding petals 105, and the cam ring 106 are packaged in the packaging chamber in the inside of the base. More specifically, the guide structure is fixedly arranged on the base body 110, and the x number of demolding petals 105 and the cam ring 106 are movably combined with the base body 110 and the two base cover plates 102 / 111, wherein the cam ring 106 is limited in the axial and radial directions of the base by the base body 110 and the base cover plates 102 / 111 and can only swing and rotate relative to the base, and the movement of the demolding petals 105 is mainly limited by the guide structure. It should be noted that the base body 110 and the two base cover plates 102 / 111 are annular structures, and the specific structure of the base cover plates 102 / 111 is not particularly limited here.
[0058] Specifically, the base body 110 has a first end face and a second end face arranged back to back along the axial direction thereof, the first end face has a slot structure with an area slightly smaller than that of the first end face, and the guide structure, the x number of demolding petals 105, and the cam ring 106 can be assembled in the slot structure. More specifically, the slot bottom of the slot structure is provided with a sliding channel 113, and part of the guide structure is embedded in the sliding channel 113 and fixed in the radial direction with the base body 110 while being capable of moving relatively in the axial direction. By providing a slot structure on the first end face of the base body 110, the assembly of the guide structure, the demolding petals 105, and the cam ring 106 can be facilitated.
[0059] Specifically, the circumferential side of the base body 110 has a notch extending along the circumference of the base as a whole, the notch is directly communicated with the groove-shaped structure, the adapter is fixedly arranged on the cam ring 106, the adapter is arranged in the notch, and the cam ring 106 is limited to swing within the range defined by the notch, that is, in the process of rotation, the adapter on the cam ring 106 will be in contact with the wall surface on both sides of the notch to form a movement limitation to the cam ring 106, so as to limit the movement stroke of the swing rotation of the cam ring 106.
[0060] As a typical embodiment, the base can further include an annular non-closed limiting ring, which is fixedly arranged on the first end surface of the base body 110, and the limiting ring and the base body 110 jointly enclose the aforementioned groove-shaped structure, a notch is formed between the two ends of the limiting ring, and the limiting ring constitutes a movement limitation to the cam ring 106.
[0061] Specifically, the guide structure has x guide channels arranged in sequence along the circumference of the central hole, one end of each guide channel extends along the radial direction of the central hole, and the guide channel penetrates the guide structure along the radial direction of the central hole, and x demolding petals 105 are arranged in one-to-one correspondence in the x guide channels, and two ends of each demolding petal 105 respectively extend from two ends of the guide channel. Specifically, the x guide channels are independently arranged.
[0062] More specifically, the guide structure can be an integral structure or a split structure, in order to facilitate the assembly of the demolding petals 105 and the guide structure, a split structure of the guide structure can be selected, please refer to Figure 2 and Figure 3 , the guide structure includes x axial sliders 107, each axial slider 107 has a guide channel therein, the axial slider 107 is arranged on the base body 110, and correspondingly, the base body 110 can be provided with x sliding channels 113, a part of each axial slider 107 is arranged in a sliding channel 113 in correspondence, the axial slider 107 is in sliding fit with the sliding channel 113 in the axial direction of the sliding channel 113, and the axial slider and the base are matched to form a pneumatic cylinder structure, through such design, the axial slider 107 and the base can only produce relative movement in the axial direction, and are relatively fixed in the radial direction. More specifically, the base can be provided with a vent hole, and the air supply mechanism is communicated with the sliding channel inside the base through the vent hole, and the axial elastic force borne by the axial slider 107 can be adjusted by adjusting the inlet air pressure.
[0063] Specifically, in order to realize the movement guidance to the demolding lobe 105 and make the demolding lobe 105 always contact with the cam ring 106, the inside of the demolding lobe 105 has a hollow cavity, and the axial sliding block 107 is also provided with a limiting pin 109, part of the limiting pin 109 extends into the cavity inside the demolding lobe 105 (it is to be noted that the axial sliding block 107 is provided with an opening, the opening is in communication with the cavity, the opening can be used for the limiting pin 109 to pass through to extend into the cavity, and the length direction of the opening extends along the radial direction of the base body 110, so as to form the movement guidance to the limiting pin 109 / demolding lobe 105, of course, the limiting pin 109 can also penetrate the demolding lobe 105 along the axial direction of the base), the limiting pin 109 is movably connected with the demolding lobe 105, and the elastic element 114 is arranged in the cavity and located at the side of the limiting pin 109 close to the cam ring 106, in the movement process of the demolding lobe 105, the pressure generated by the contact between the elastic element 114 and the demolding lobe 105 and the limiting pin 109 makes the demolding lobe 105 always contact with the inner ring surface of the cam ring 106. It is to be noted that the elastic element 114 is always in an elastic compression state or is converted between the elastic compression state and the natural state, that is, the elastic element 114 cannot be stretched, for example, the elastic element 114 can be a spring.
[0064] Specifically, please refer to Figure 2 and Figure 3 , the inner ring surface of the cam ring 106 has x radial advancement structure groups, the x radial advancement structure groups are arranged along the circumferential direction of the cam ring 106, the radial advancement structure group includes a first radial advancement structure and a second radial advancement structure which are sequentially and adjacently arranged along the circumferential direction of the cam ring 106, each radial advancement structure group corresponds to a demolding lobe 105, the maximum distance between the first radial advancement structure and the geometric center of the cam ring 106 is different from the maximum distance between the second radial advancement structure and the geometric center of the cam ring 106, when the cam ring 106 swings and rotates, each demolding lobe 105 sequentially contacts with the first radial advancement structure and the second radial advancement structure, the x demolding lobes 105 are gathered or dispersed along the radial direction of the base, the radial cross-sectional area of the punch channel 108 changes between the first radial cross-sectional area and the second radial cross-sectional area, more specifically, when the demolding lobe 105 contacts with the first radial advancement structure, the punch channel 108 has the first radial cross-sectional area, when the demolding lobe 105 contacts with the first radial advancement structure, the punch channel 108 has the second radial cross-sectional area.
[0065] Specifically, the first radial pushing structure and the second radial pushing structure are integral with the cam ring 106, the first radial pushing structure is a recess structure formed on the inner ring surface of the cam wheel, and the second radial pushing structure is a protrusion structure formed on the inner ring surface of the cam wheel. In order to smoothly change the punch channel 108 between the x demolding petals 105, the recess structure and the protrusion structure are smoothly connected, so that the demolding petals 105 can smoothly alternate with the first radial pushing structure and the second radial pushing structure.
[0066] Specifically, please refer to Figure 1 and Figure 4 , the power module includes a driving motor, a crankshaft assembly 1, a gear box 4, a synchronous belt 3, a transmission shaft 5, a cam driving mechanism 6, a swing rod 7, a push rod 8 and a fish eye joint 9. The driving motor, the crankshaft assembly 1, the gear box 4, the cam driving mechanism 6 and the swing rod 7 are assembled on the equipment bed. The crankshaft assembly 1 is in transmission connection with the driving motor. The crankshaft assembly 1 is also in transmission connection with the punch rod 101. The crankshaft assembly 1 is in transmission connection with the gear box 4 through the synchronous belt 3. The gear box 4 is in transmission connection with the transmission shaft 5. The transmission shaft 5 is fixedly connected with the cam 601 of the cam driving mechanism 6. Through the gear box 4, the synchronous belt 3 and the transmission shaft 5, the driving motor synchronously drives the rotation of the crankshaft assembly 1 and the cam of the cam driving mechanism 6. One end of the swing rod 7 is hinged to the equipment bed through a fixed hinge support 602. The other end of the swing rod 7 is hinged to the push rod 8. The swing rod 7 is also fixedly connected with the cam follower 603 of the cam driving mechanism 6. The push rod 8 is hinged to the cam ring 106 through the fish eye joint 9. Specifically, the fish eye joint 9 is hinged to the cam ring 106 through a transmission pin 112. Through the cam driving mechanism 6, the swing rod 7, the push rod 8 and the fish eye joint 9, the whole rotation of the crankshaft assembly 1 is converted into the swing rotation of the cam ring 106 in the demolding mechanism 10. There is a certain corresponding relationship between the swing of the cam ring 106 and the rotation angle of the crankshaft assembly, that is, a timing relationship. The corresponding relationship can be set according to specific requirements, which is not limited here.
[0067] When the punch rod 101 is driven by the driving motor and the crankshaft assembly 1 to move the metal shell 103 along the axial direction to approach the demolding petals 105, the rotation of the crankshaft assembly 1 is converted into the swing rotation of the cam ring 106 through a series of transmission structures and the transmission of the cam driving mechanism 6. The swing rotation of the cam ring 106 drives the demolding petals 105 to move radially outward (i.e. the x demolding petals 105 are dispersed), so that the punch channel 108 becomes larger. The punch 104 continues to move downward to the dead point without contacting the metal shell 103. When the shell opening of the metal shell 103 passes through the punch channel 108, the cam ring 106 rotates in the opposite direction under the drive of the cam driving mechanism 6, so as to make the x demolding petals 105 gather, so that the punch channel 108 becomes smaller and prevents the metal shell 103 from passing through.
[0068] It is to be noted that when the punch rod 101 with the metal shell 103 reaches the bottom dead center, the reverse movement is started, and before the shell mouth of the metal shell 103 reaches the punch channel 108, the punch channel 108 has been reduced and can only allow the punch rod 101 / punch 104 to pass, so that the metal shell 103 is stripped from the punch rod 101 by the stripping petals 105.
[0069] It is to be noted that when the shell mouth of the metal shell 103 starts to contact the stripping petals 105, because the shell mouth of the metal shell 103 has irregular lugs, the stripping petals 105 that first contact the shell mouth will be axially stressed to drive the axial slider 107 to move along the axial direction of the base; and finally the stripping petals 105 will be axially arranged according to the shape of the shell mouth of the metal shell 103, which is helpful to uniform stress of the shell mouth of the metal shell 103, reduces deformation of the shell mouth, and improves the precision of the product.
[0070] The novel mechanical transmission type metal shell stretching and stripping mechanism provided by the embodiment of the utility model adopts a plurality of stripping petals matched with each other to enclose a punch channel, and the surface of the metal shell is completely not in contact with the stripping mechanism, so that the problem of scratching the surface of the metal shell is avoided.
[0071] The plurality of stripping petals in the novel mechanical transmission type metal shell stretching and stripping mechanism provided by the embodiment of the utility model are independent of each other, and the stripping petals can select metal components or ceramic components with better hardness, which are more durable and less likely to be damaged.
[0072] The novel mechanical transmission type metal shell stretching and stripping mechanism provided by the embodiment of the utility model can adjust the converging and discrete stroke and timing of the stripping petals through a cam curve, and further, when the cam follower goes, the stripping petals can converge to form a stripping window of the punch channel after the shell mouth of the metal shell passes through the punch channel, so that the stripping window can be minimized, the stroke of the main machine is effectively saved, the production speed can be higher, and the size of the main machine device can be smaller.
[0073] The novel mechanical transmission type metal shell stretching and stripping mechanism provided by the embodiment of the utility model can adjust the converging and discrete stroke and timing of the stripping petals through a cam curve, and further, when the cam follower goes, the stripping petals can converge to form a stripping window of the punch channel after the shell mouth of the metal shell passes through the punch channel, so that the stripping window can be minimized, the stroke of the main machine is effectively saved, the production speed can be higher, and the size of the main machine device can be smaller.
[0074] It should be understood that the above embodiments are only to illustrate the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.
Claims
1. A shell product demolding mechanism characterized by comprising: include: Circular base; A guide structure is provided on the base; x demolding flaps are arranged sequentially along the circumference of the base, and the x demolding flaps enclose a punch channel. The demolding flaps are movably engaged with the base, and the demolding flaps are restricted by the guide structure to only be able to move in a straight line along the radial direction of the base. A cam ring is disposed around the periphery of the x demolding segments. The cam ring is movably engaged with the base and is configured to oscillate and rotate only along the circumference of the base. An elastic element is provided, which elastically engages with the demolding flap, and the elastic force provided by the elastic element ensures that the demolding flap remains in contact with the cam ring at all times. When the cam ring is driven to swing relative to the base, the x demolding petals converge or disperse radially along the base under the combined action of the cam ring and the elastic element, and the radial cross-sectional area of the punch channel varies between the first radial cross-sectional area and the second radial cross-sectional area, where x≥2.
2. The shell product ejection mechanism of claim 1, wherein: The inner ring surface of the cam ring is also provided with x radial propulsion structure groups, which are arranged along the circumference of the cam ring. Each radial propulsion structure group includes a first radial propulsion structure and a second radial propulsion structure arranged sequentially adjacent to each other along the circumference of the cam ring. Each radial propulsion structure group corresponds to a demolding flap. When the cam ring is driven to swing and rotate relative to the base, each demolding flap alternately contacts the first radial propulsion structure and the second radial propulsion structure in sequence.
3. The shell product ejection mechanism of claim 2, wherein: The maximum distance between the first radial propulsion structure and the geometric center of the cam ring is different from the maximum distance between the second radial propulsion structure and the geometric center of the cam ring.
4. A shell product demolding mechanism according to claim 2 or 3, characterized in that: The first radial propulsion structure and the second radial propulsion structure are integral with the cam ring. The first radial propulsion structure is a recessed structure formed on the inner ring surface of the cam ring, and the second radial propulsion structure is a protruding structure formed on the inner ring surface of the cam ring.
5. The shell product ejection mechanism of claim 4, wherein: The recessed structure and the raised structure are smoothly connected.
6. The shell product ejection mechanism of claim 2, wherein: The base has a notch that extends circumferentially along the base as a whole. An adapter is fixedly installed on the cam ring. The adapter is located within the notch. The cam ring is restricted to swinging and rotating within the range defined by the notch.
7. The mechanism of claim 6 wherein: The base includes an annular base body and a limiting structure. The limiting structure is fixedly disposed on the end face of the base body and is located around the cam ring. The limiting structure encloses and forms the notch.
8. The shell product ejection mechanism of claim 7, wherein: The limiting structure includes a non-closed limiting ring with the gap formed between the two ends of the limiting ring; or, the limiting structure includes two limiting blocks, which are spaced apart circumferentially along the base body with the gap formed between the two limiting blocks.
9. The shell product ejection mechanism of claim 6, wherein: The guide structure has x guide channels, which are arranged sequentially along the circumference of the base and extend radially along the base. Each demolding flap is movably disposed within one of the guide channels and can only move in a straight line along the guide channel.
10. The shell product ejection mechanism of claim 9, wherein: The guide structure comprises x axial sliders fixedly arranged on the base, each of the axial sliders has a guide channel therein, the inside of the demolding flap has a hollow cavity, a limiting pin is further arranged on the axial slider, part of the limiting pin extends into the cavity inside the demolding flap, the limiting pin is movably matched with the demolding flap, and the elastic element is arranged in the cavity and located at the side of the limiting pin close to the cam ring. During the movement of the demolding flap, the pressure generated by the contact between the elastic element and the demolding flap and the limiting pin makes the demolding flap always in contact with the radial pushing structure group.
11. The mechanism of claim 10 wherein: The guide structure is configured to be fixed with the base in the radial direction of the base and movably matched with the base in the axial direction of the base.
12. The shell product ejection mechanism of claim 11, wherein: The base is provided with a sliding channel extending in the axial direction of the base, and the axial slider is partially arranged in the sliding channel. The axial slider is matched with the base to form a cylinder structure, and the axial slider can move axially along the sliding channel relative to the base.
13. A shell product demolding apparatus characterized by comprising: The shell product demolding mechanism according to any one of claims 1-12, and a driving mechanism and a transmission mechanism, the driving mechanism being in transmission connection with the cam ring of the shell product demolding mechanism through the transmission mechanism and driving the cam ring to swing relative to the base. The driving mechanism is a cam driving mechanism, the transmission mechanism comprises a swing rod, a push rod and a fish eye joint, one end of the swing rod is in transmission connection with a machine bed, the other end is in transmission connection with the push rod, and the swing rod is further fixedly connected with a cam follower of the cam driving mechanism. The push rod is in transmission connection with the cam ring through the fish eye joint.
14. The shell product demolding apparatus according to claim 13, characterized by: The shell product demolding mechanism according to any one of claims 1-12 or the shell product demolding device according to claim 13 or 14; 15. A shell product stretch processing apparatus characterized by comprising: When the cam ring is driven to swing relative to the base, each of the demolding flaps is in turn in alternating contact with the first radial pushing structure and the second radial pushing structure, and when the demolding flap is in contact with the first radial pushing structure, the punch channel has a first radial cross-sectional area, and when the demolding flap is in contact with the first radial pushing structure, the punch channel has a second radial cross-sectional area.