Machine shell casting blank of medium-speed industrial overlock machine and chassis of machine shell casting blank

Abstract

The utility model discloses a casing casting blank of a medium-speed industrial overedger and a chassis of the casing casting blank. The casing casting blank comprises a machine head, a base, a table stop seat body, a semicircular protruding part, a connecting part, a rear shaft sleeve shoulder A, a u-shaped groove hole part, a process groove, a bottom plane protruding strip, the chassis, an inverted-cone-shaped groove and a chassis pad. According to the utility model, the authorized patent ZL201420565629.6 is improved by the inventor, a low-cost casing casting blank is obtained by common casting, the problems of low assembly efficiency and inconsistent parts in the original patent are solved, the production efficiency is improved, and the needle pitch is convenient to adjust; the novel chassis enables the product to be placed and used anywhere, and the convenience is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medium -speed industrial overlock machine, more exactly relates to a chassis casting blank suitable for GN1 series medium -speed industrial overlock machine product and its chassis. BACKGROUND

[0002] The medium -speed industrial overlock machine of the utility model refers to the medium -speed industrial overlock machine product of the industry standard of sewing machine product and the expansion model produced depending on the structure of this series product, which is commonly known as overlock machine, edge coding machine, edge sewing machine, etc. It has many advantages such as small size, light weight, mature technology and high performance price ratio. It is mainly used in the household field. Because the rotating speed can reach 3000 rpm, it belongs to the design of industrial machine, and can be lubricated by manual oiling, so the product has been used for decades. So far, it is still the first choice of many individual users. There are hundreds of thousands of market demands every year. But with the development of the times, some design deficiencies in the household field are gradually criticized by the public.

[0003] The inventor has been engaged in the field of medium -speed industrial overlock machine for decades, and has a deep understanding of this series of products. And in the name of the individual or this seam (Shanghai) sewing machine Co., Ltd. has filed a number of authorized or pending patent applications in this field. Among them, the utility model patent: ZL201420565629. 6 has been authorized for nearly ten years, and because of the obvious design advantage, it has achieved good application value. After nearly ten years of production verification, the inventor has a deeper understanding of the original patent and some unsolved problems of medium -speed industrial overlock machine products. Therefore, the targeted improvement scheme is put forward again.

[0004] Because the original patent connecting part is designed on the bottom of the head side, and connected with the front side of the base body to form a vertical triangle structure. And the traditional type non-patent product is two separate parts of head and base, which is formed by separate processing and assembly, so there is no above-mentioned part. When assembling the presser foot assembly with presser foot, it can be easily assembled from the inside and outside of the gap. But the original patent is blocked by the vertical triangle connecting part, plus the restriction of the previously installed upper knife holder assembly on the inside and front side, it can only be carefully assembled from the outside by turning several angles. Part of the time even need to remove the presser foot before installation. Therefore, the assembly efficiency of this part is not high. In addition, the upper end of the original connecting part just blocks the screw hole position of the swing shaft rear shaft sleeve inside the head, which causes the hole to be processed to the other side, and further causes the change of the positioning surface of the swing shaft rear shaft sleeve, which leads to the incompatibility of this part with the products of other factories, so it is very inconvenient.

[0005] All the previous products have a half-circular arc structure in the rear axle shoulder armor part, which can only be completed by core box or machining. For the product with integrated head and base, this is an unnecessary reservation, which increases weight and cost, and is not conducive to casting and molding. Therefore, it is necessary to redesign.

[0006] The U-shaped groove below the round hole of the U-shaped hole part is designed for assembling or disassembling the crankshaft, and the hole vertically downward is the normal design concept. When assembling the product, the high part of the crankshaft is vertically assembled through the U-shaped groove. However, due to the blockage of the front side of the bottom plane of the base casting, when assembling the connecting rod on the high part of the crankshaft, the high part of the crankshaft must be turned to a certain angle to the front side of the bottom plane, and then the two fastening screws at the bottom of the crankshaft connecting rod can be tightened with a screwdriver. Similarly, when disassembling, the high part of the crankshaft must be turned to the appropriate angle, and after loosening the two crankshaft connecting rod screws, the high part of the crankshaft is turned to the vertical position of the U-shaped groove before it can be removed, so it is not convenient, so this part also needs to be improved.

[0007] The traditional process hole part is a small n-shaped gap body, which is designed for machining and assembling GN1-1 type products, and a circular process hole needs to be drilled on the upper side, so

[0008] It is more troublesome. At the same time, when adjusting the needle distance, the GN1-6 type product must first move away the motor to open the shield, and then adjust the needle distance, because the rear side of the product is provided with a fully sealed large shield, and the outside of the large shield is provided with a driving motor. The products without large shields must also be removed from the motor before adjusting the needle distance in many cases. This brings many inconveniences to users. In fact, the loose and tight ends of the needle distance adjustment screw head are directly opposite to the process groove side. Whether this side can be used to solve the above two problems becomes the direction of technical improvement.

[0009] Regarding the raised strips on the bottom plane: The traditional bottom plane has a large blank surface, measuring approximately 200mm x 140mm, making machining very time-consuming. The inventor's previously granted patent, however, features four raised surfaces at the four corners of the bottom plane, each with a center groove. By machining the grooves in the center of the raised surfaces, the bottom planes are parallel. This design is simple and feasible. However, since the four center grooves must be machined separately, significant errors can occur in practice due to operator error. More importantly, the key technical challenge of the original patent, which only allows the casting to be produced using the lost foam process, lies in this area. The large area of ​​the bottom plane, the raised surfaces at the four corners, and the center groove limit the possibility of directly removing this area from the mold during casting. Designing a sand core would be costly, and due to its large area and thin walls, it is prone to deformation. Therefore, the most economical solution is the lost foam process with a slider design. Therefore, a better alternative solution is urgently needed to reduce casting costs, improve casting precision, and increase production efficiency.

[0010] The chassis pad of traditional products is just a shock-absorbing pad between the chassis and the base. It needs to be drilled, tapped and fixed to the chassis, and then the chassis is fixed to the base with screws. And the bottom of the chassis is only cast with four raised planes without any anti-slip design. When the customer uses it, the vibration of the drive motor will cause the machine to move around. Therefore, it is necessary to put an anti-slip pad under the chassis, which is very inconvenient. The inventor applied for a patent through Benfeng (Shanghai) Sewing Machine Co., Ltd. to design a concave rectangular groove on the bottom of the chassis, and

[0011] The inner side of the square groove is affixed with a non-slip rubber strip, while the inner side of the chassis utilizes a convex rectangular surface formed by the concave rectangular groove at the same position, with two raised points. This rubber strip is also affixed to achieve internal shock absorption and bottom anti-slip effects. Utility model patent number: ZL202321681463.X (invention patent pending). While this design solution is certainly ingenious, its overall cost is higher than that of a traditional chassis. Therefore, a technical solution that can solve these problems without increasing costs would be a good alternative. Utility Model Content

[0012] In view of the above problems existing in the prior art, the utility model provides an improved medium-speed industrial overlock machine shell and chassis. The original patent connection part affects the assembly efficiency and causes inconsistent parts. The rear shaft sleeve shoulder, u groove hole part, process groove and bottom plane protruding strip improve the production efficiency and product precision, facilitate the stitch adjustment, and more importantly, realize the ordinary casting to obtain the shell casting blank, and reduce the cost. The new type of chassis, inverted conical groove and chassis pad design realize the double functions of shock absorption and anti-skid of the chassis pad without increasing the cost, so that the product can be placed and used anywhere, greatly facilitating the customers.

[0013] The utility model adopts the following technical scheme:

[0014] A medium-speed industrial overlock machine shell casting blank and chassis are obtained by casting, comprising: a head, a base, a table seat body, a semicircular protruding part, a connecting part, a rear shaft sleeve shoulder, a u groove hole part, a process groove, a bottom plane protruding strip, a chassis, an inverted conical groove and a chassis pad, one end of the head is integrally cast with the base; the table seat body is cast on the other side of the base; and the semicircular protruding part is cast on the middle part above the table seat body; and the chassis is fixed on the base through screws at the center part; characterized in that the other side of the head is connected with the semicircular protruding part through the connecting part; the rear shaft sleeve shoulder is located on the inner side above one end of the base; the u groove hole part is located on the base below; the bottom plane protruding strip is located at the bottom of the bottom plane; the inverted conical groove is located on the chassis; and the chassis pad is installed in the inverted conical groove.

[0015] The connecting part is a rectangular long strip-shaped connecting rib, one end of which is cast on the upper end of the semicircular protruding part, and the other end is connected with the center end of one side of the head in an inclined manner, and it is a cast integral part.

[0016] The new design of the connecting part solves the defects of the original connecting part, and realizes the same effect as the traditional split type head and base product. Meanwhile, the normal molten iron flow between the head and the base can be well ensured. The connecting part has two main functions for the integrated head and base product: one is to pull and fix the head and the base, so as to prevent the deformation or displacement of the casting blank during the casting process, and thus to cause waste products; the other is to ensure the normal molten iron flow between the head and the base, so as to prevent the air pressure accumulation in the casting cavity due to the non-communication between the head and the base, and thus to cause the explosion of the box, the lack of material or the difference in the temperature of the molten iron inside and outside. The new design skillfully solves the above problems. Actually, the inventor designs the connecting part for the reason that the connecting part is easy to polish and has no key components. When designing the mold, the connecting part can be designed as a breakable type, and after the casting blank is completed, the connecting part can be directly removed. Thus, after simple polishing, a casting blank as the traditional split type product can be obtained. Therefore, the new design has obvious advantages.

[0017] The rear shaft sleeve shoulder is located at the upper end of the inner side of the base, and the rear shaft sleeve shoulder has no semicircular arc structure of the traditional product, and only the front side integral part with the R angle end is reserved.

[0018] The main part of the rear shaft sleeve shoulder of the traditional product is a semicircular arc structure designed on the base, and the original casting blank does not have the structure, and the structure is completed through milling and scraping processing, otherwise the crankshaft connecting rod will collide with the part during movement. The previous patent of the inventor designs the part and the u groove hole part as an integral molding core box, and the structure is directly obtained on the casting blank through molding. Actually, for the integrated head and base casting blank, the structure is useless, but the front side part with the R angle end has two parts to be assembled, so the new design only reserves the part. Since the part can be directly obtained through the mold, the new design saves the cost, simplifies the molding, and has obvious progress.

[0019] The u groove hole part is located below the rear shaft sleeve shoulder part of the base, and the upper part is a circle, and the lower part is connected with a u-shaped groove, and the new u-shaped groove part is different from the vertical setting of the u-shaped groove of the traditional product below the circular hole, and the angle of the new u-shaped groove part changes according to the related dimensions of different products, and the angle is inclined to the R angle direction of the rear shaft sleeve shoulder at an angle of 18°-28°.

[0020] The u-shaped groove below the u groove hole part is slightly adjusted in the molding angle, without increasing any technical difficulty or processing cost, and the disassembly and assembly work is greatly facilitated, so that the improved product has obvious advantages.

[0021] The process tank is located at the rear part of one side of the base, and it is an empty body structure; and unlike the n-shaped small empty gap of the traditional product, the new design is enlarged outwardly by about 26mm and upwardly by about 45mm on the basis of retaining the n-shaped small empty gap, thereby forming a large unobstructed empty body.

[0022] The previous patent and the traditional process tank are both n-shaped small empty body, and when producing GN1-1 type product, a circular process hole is drilled on the upper side thereof to realize the adjustment of the internal parts by a screwdriver. The enlarged process tank design directly eliminates the machining of the hole, and more importantly, the size of the needle distance can be easily adjusted through the enlarged process tank side, which greatly facilitates the product users.

[0023] The bottom plane protruding strip is located at the bottom of the bottom plane, and it is a long rectangular strip-shaped protruding structure, and there is one strip on each of the left and right sides, and it is flush with the edge side of the bottom plane.

[0024] Because the area of the bottom of the bottom plane is large and the machining allowance is large, the production of this process of the traditional product is very time-consuming. The original patent realizes the flatness of the bottom plane by machining grooves at the centers of the four protruding planes. Due to the reasons of production workers, the accuracy control often has certain errors. And the four grooves need to be machined one by one, so the design is reasonable but also time-consuming. The two protruding strip designs can be quickly completed by milling machine. And only about one fifth of the original area needs to be machined, so the efficiency is very high. And the accuracy is also absolutely controlled. More importantly, this part can be directly molded, realizing the low-cost shell casting blank through ordinary casting process. For the medium-speed industrial overlock machine with the head and base integrated, this is a great progress.

[0025] The bottom disc comprises: an inverted conical groove and a bottom disc pad, and the inverted conical groove is located on the bottom disc, and the bottom disc pad is installed in the inverted conical groove.

[0026] The inverted conical groove is located at the four corner ends of the bottom plane of the bottom disc, and the upper plane of the inverted conical groove is 3-8mm higher than the bottom plane of the bottom disc, and it is an inverted pagoda-shaped conical hollow sink body, and it is an integral part of the bottom disc.

[0027] The bottom disc pad is a circular pagoda-shaped conical body structure, and it is an inverted pagoda, and it is directly placed in the inverted conical groove without screw fixation, and the angle of the bottom disc pad is the same as that of the inverted conical groove, and the upper end of the bottom disc pad is 3-8mm higher than the upper plane of the inverted conical groove, and the lower end of the bottom disc pad is 3-5mm lower than the bottom of the bottom plane of the bottom disc, and the number of the bottom disc pad is the same as that of the inverted conical groove, which is four.

[0028] The traditional chassis pad is fixed to the four corners of the chassis bottom plane with screws, and it is just a shock-absorbing pad between the base and the chassis. The upper end of the new chassis pad is about 3-8mm higher than the upper plane of the inverted cone groove, which also provides a shock-absorbing function between the base and the chassis, and its lower end is about 3-5mm above the bottom of the chassis bottom plane. Due to the anti-slip effect of the rubber pad at the bottom, the machine can be placed and used anywhere. More importantly, the inverted cone groove is

[0029] The groove is designed on the chassis, and the chassis pad of the same angle is placed upside down in the inverted conical groove. The chassis pad does not need to be fixed. It can be tightly locked to the base by screwing the chassis pad and the chassis through the center of the chassis. It can be said that the design is ingenious, simple and practical. In addition, the cost of four new chassis pads is only about 0.45 yuan, while the inventor’s previous patented design of thick and long rubber strips costs about 1.8 yuan for four thick and long rubber strips. Therefore, the cost advantage of the new patent is obvious. Compared with the traditional chassis, since there is no need to process the screw threads and use screws to fix the chassis pad, the comprehensive cost of the new chassis and chassis pad is slightly lower than that of traditional chassis products. The utility model is highly operational and has a basis for widespread popularization and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a front structural diagram of the casing casting and chassis of the utility model;

[0031] Figure 2 This is a schematic diagram of the left side structure of the casing casting of the utility model;

[0032] Figure 3 This is a schematic diagram of the left side structure of the original patented casing casting;

[0033] Figure 4 This is a schematic diagram of the R angle position of the rear axle sleeve shoulder armor of the utility model and its retained front side structure when viewed from the top side downward;

[0034] Figure 5 This is a cross-sectional view of the traditional rear axle sleeve shoulder armor, showing the semi-circular arc structure and the front side of the R angle when viewed from the left side;

[0035] Figure 6 This is a schematic diagram of the U-slot hole structure of the utility model;

[0036] Figure 7 This is a schematic diagram of the traditional U-slot hole structure;

[0037] Figure 8 This is a schematic diagram of the bottom plane raised strip structure of the utility model;

[0038] Figure 9 It is a raised plane on the bottom plane of the original patent;

[0039] Figure 10Structure diagram of the planar center groove;

[0040] Figure 11 The utility model discloses a chassis structure and chassis pad thereof;

[0041] Figure 12 Structure sectional view of the inverted conical groove;

[0042] Figure 13 Traditional type chassis

[0043] Figure 14 Structure diagram of the bottom.

[0044] Explanation of reference signs:

[0045] 1, head; 2, base; 3, chassis; 2221, semicircular convex part; 2222, table frame base body; 11, connecting part; 21, rear axle sleeve shoulder armor; 22, u groove part; 23, bottom plane; 25, u-shaped groove; 31, inverted conical groove; 32, chassis pad; 223, process groove; 231, bottom plane convex strip. DETAILED DESCRIPTION

[0046] The utility model will be described in detail in combination with specific implementation manners. It should be understood that these implementation manners are only used for illustrating the utility model and are not used for limiting the range of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various alterations or modifications to the utility model, and these equivalent forms also fall within the range limited by the claims attached to the present application.

[0047] As Figure 1As shown in the utility model discloses a medium-speed industrial overlock machine shell casting and bottom disc, and it is obtained through casting, comprising: machine head 1, base 2, table seat body 2222, semicircle convex part 2221, connecting part 11, rear axle sleeve shoulder armor 21, u groove hole part 22, process groove 223, bottom plane convex strip 231, bottom disc 3, inverted taper groove 31, bottom disc pad 32, one end of machine head 1 is integrally cast with base 2; table seat body 2222 is cast on the other side of base 2; and semicircle convex part 2221 is cast on the middle part above table seat body 2222; and bottom disc 3 is fixed on base 2 through screw in the center part; connecting part 11, rear axle sleeve shoulder armor 21, u groove hole part 22, process groove 223, bottom plane convex strip 231, bottom disc 3, inverted taper groove 31, bottom disc pad 32, characterized in that, the other side of machine head 1 is connected with semicircle convex part 2221 through connecting part 11; rear axle sleeve shoulder armor 21 is located on the inner side above one end of base 2; u groove hole part 22 is located on base 2 below; bottom plane convex strip 231 is located on the bottom of bottom plane 23; inverted taper groove 31 is located on bottom disc 3; and bottom disc pad 32 is installed in inverted taper groove 31.

[0048] As Figure 2 shown, the connecting part 11 of the utility model is a rectangular strip-shaped connecting rib, one end of which is cast on the upper end of the semicircle convex part 2221, and the other end is connected to the center end of one side of the machine head 1 in an inclined manner, and it is a cast integral part.

[0049] In specific implementation, the connecting part 11 cannot be directly obtained through molding, and a small core box is designed for the machine head 1 and the base 2 part on the inner side to obtain it.

[0050] According to the current casting process, this cost is almost negligible. The two ends of the connecting part 11 are designed to be easily broken, and are removed after the casting is completed, so that the machine head 1 and the base 2 on this side have a large unobstructed space like the traditional split product. Therefore, it greatly facilitates assembly production.

[0051] As Figure 4 shown, and with the help of Figure 5 the traditional rear axle sleeve shoulder armor structure diagram to assist understanding, the rear axle sleeve shoulder armor 21 is located on the upper end of the inner side of one side of the base 2, and the rear axle sleeve shoulder armor 21 has no semicircle arc part structure of the traditional product, only the front side integral part with the R angle end is reserved.

[0052] In specific implementation, the rear axle sleeve shoulder armor 21 can be directly molded through mold design, thus simplifying the production process and reducing the cost.

[0053] AsFigure 6 As shown, the U-groove hole portion 22 of the utility model is located at the base 2 below the rear axle sleeve shoulder armor 21, and there is a circle above it, and a U-shaped groove 25 is connected to the bottom. Unlike the traditional product U-shaped groove 25 which is vertically arranged below the circular hole, the angle of the new U-shaped groove 25 changes according to the relevant dimensions of different product castings, and is inclined at an angle of about 18°-28° toward the R angle direction of the rear axle sleeve shoulder armor 21.

[0054] In a specific implementation, the U-slot portion 22 cannot directly obtain the shape, and it is designed as a small core box with the same shape and angle, which has extremely low cost.

[0055] like Figure 2 As shown, the process groove 223 of the present invention is located at the rear part of one side of the base 2, and it is a gap body structure; and different from the n-shaped small gap of traditional products, the new design retains the n-shaped small gap and expands it parallel to the outside by about 26 mm and upward by about 45 mm, thereby forming a large unobstructed gap body.

[0056] In the specific implementation, since the process tank 223 is a large empty space, it cannot be directly obtained, and the small n-shaped empty space of the original patent and traditional products is also the same. At the same time, since there is a large concave and U-shaped through-body on the front side of this part, all medium speed

[0057] Industrial overlock sewing machines typically have a large core box design. This new design simply enlarges the original core box slightly. The removal of this part reduces weight without significantly increasing the weight, so the cost is negligible, yet the benefits are significant.

[0058] like Figure 8 As shown, the bottom plane raised strip 231 of the present invention is located at the bottom of the bottom plane 23 and is a rectangular long strip raised structure with one on each of the left and right sides, and is flush with the edge side of the bottom plane 23 respectively.

[0059] In practice, the bottom plane raised strip 231 can be directly obtained through molding. Since the area of ​​this part is only one-fifth of that of traditional products, the CNC machine tool can mill this part at a suitable speed while passing through the idle part quickly. Therefore, the efficiency is extremely high and the precision is more guaranteed.

[0060] like Figure 11 As shown, the chassis of the present invention includes: an inverted conical groove 31 and a chassis pad 32, and the inverted conical groove 31 is located on the chassis 3, and the chassis pad 32 is installed in the inverted conical groove 31.

[0061] like Figure 11As shown, the inverted grooves 31 of the present invention are located at the four corner ends of the bottom plane 23 of the chassis 3, and there are four of them, and their upper planes are about 3-8 mm higher than the bottom plane 23 of the chassis 3. They are inverted pagoda-shaped conical hollow sinks, and are an integral part with the chassis 3.

[0062] like Figure 12 As shown, the chassis pad 32 in the present utility model is a circular pagoda-shaped conical structure, and it is an inverted pagoda, and is directly placed in the inverted conical groove 31 without screw fixation, and its angle is the same as the angle of the inverted conical groove 31, and its upper end is about 3-8 mm higher than the upper plane of the inverted conical groove 31, and its lower end is about 3-5 mm exposed from the bottom of the bottom plane 23 of the chassis 3, and there are four of them, the same number as the inverted conical groove 31.

[0063] In specific implementation, the chassis 3 can be directly obtained by ordinary casting process, and the inverted conical groove 31 is directly cast on the chassis 3 as an inverted conical hollow body. Due to the difference in casting process and level, if the quality of this groove is guaranteed, it can be achieved without processing, otherwise it needs to be shaped with a tapered drill. The chassis pad 32 is a molded rubber pad.

[0064] The overall height is approximately 6-13 mm higher than the inverted conical groove 31, so its upper end protrudes approximately 3-8 mm above the upper plane of the inverted conical groove 31, while its lower end protrudes approximately 3-5 mm from the bottom of the chassis 3. Because it is at the same angle as the inverted conical groove 31, after being placed into the inverted conical groove 31, the raised portion of the upper end acts as a shock absorber between the chassis 3 and the base 2. The lower end, exposed from the bottom of the chassis 3, thanks to the anti-slip effect of the rubber product and the product's own weight of more than ten kilograms, allows the product to be placed and used anywhere. Simultaneously, the chassis 3 is secured to the base 2 via screws passing through a hole in its center. Therefore, the chassis pad 32 does not require screws to secure it; simply tighten the screws in the center of the chassis 3, and the chassis pad 32 will fit tightly onto the bottom raised strip 231 and within the inverted conical groove 31. Furthermore, due to the extremely high flatness of the bottom raised strip 231, the flatness of the bottoms of the four chassis pads 32 is also fully guaranteed. Its design is simple, novel and has the lowest cost.

[0065] This utility model is a new design launched by the inventor after improving the authorized invention. In specific implementation, its comprehensive cost is reduced by about 1 / 8, and its efficiency and precision are higher, and its practicality is also stronger, which has wide popularization value.

[0066] The drawings in the specification Figure 3 、 Figure 5 、 Figure 7 、 Figure 9 、 Figure 10 、 Figure 13 、 Figure 14The related structural schematic view of the traditional type or original patent product is used for assisting in description or making people more convenient to understand the design of the utility model.

[0067] It should be understood that the embodiments are only used for illustrating the utility model and are not used for limiting the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope limited by the claims attached to the application.

Claims

1. A medium speed industrial overlock machine housing casting and chassis, obtained by casting, comprising: a head, a base, a table stand body, a semicircular protruding part, a connecting part, a rear axle sleeve shoulder armor, a u-slot hole part, a process groove, a bottom flat protruding strip, a chassis, an inverted tapered groove, a chassis pad, one end of the head is integrally cast with the base; the table stand body is cast on the other side of the base; and the semicircular protruding part is cast on the middle part above the table stand body; and the chassis is fixed on the base through screws at the center part; characterized in that, The other side of the head is connected with the semicircular convex part through the connecting part; the rear shaft sleeve shoulder is located on the inner side above one end of the base; the u-shaped groove part is located on the base below; the bottom flat convex strip is located on the bottom of the bottom flat surface; the inverted conical groove is located on the bottom plate; and the bottom plate pad is installed in the inverted conical groove.

2. Medium speed industrial overlock machine housing casting and chassis according to claim 1, characterized in that The connecting part is a rectangular long strip, one end of which is cast on the upper end of the semicircular convex part, and the other end is connected with the center end of one side of the head in an inclined manner, and it is a cast integral part.

3. Medium speed industrial overlock machine housing casting and chassis according to claim 1, characterized in that, The rear shaft sleeve shoulder is located on the upper end of one side of the base, and the rear shaft sleeve shoulder has no semicircular arc structure of the traditional product, only the front side integral part with an R angle end is reserved.

4. The medium speed industrial chain stitch machine cabinet casting and its chassis according to claim 1, characterized in that, The u-shaped groove part is located on the base below the rear shaft sleeve shoulder part, and above it is a circle, below it is connected with a u-shaped groove, and unlike the traditional product, the new u-shaped groove part is inclined at an angle of 18°-28° to the R angle direction of the rear shaft sleeve shoulder according to the change of the related size of different product castings.

5. The medium speed industrial chain stitch machine cabinet casting and its chassis according to claim 1, characterized in that, The process tank is located on the rear part of one side of the base, and it is an empty body structure; and unlike the n-shaped small empty slot of the traditional product, the new design is enlarged outwardly by about 26mm and upwardly by about 45mm on the basis of reserving the n-shaped small empty slot, thereby forming a large unobstructed empty body.

6. The medium speed industrial chain stitch machine cabinet casting and its chassis according to claim 1, characterized in that, The bottom flat convex strip is located on the bottom of the bottom flat surface, and it is a rectangular long strip structure, and there is one on each of the left and right sides, and it is flush with the edge side of the bottom flat surface.

7. The medium speed industrial chain stitch machine cabinet casting and its chassis according to claim 1, characterized in that, The bottom plate includes an inverted conical groove and a bottom plate pad, and the inverted conical groove is located on the bottom plate, and the bottom plate pad is installed in the inverted conical groove.

8. The medium speed industrial chain stitch machine cabinet casting and its chassis according to claim 1, characterized in that, The inverted conical groove is located on the four corner ends of the bottom flat surface of the bottom plate, and the upper plane is 3-8mm higher than the bottom flat surface of the bottom plate, and it is an inverted pagoda-shaped conical hollow sink body, and it is an integral part with the bottom plate.

9. The medium speed industrial chain stitch machine cabinet casting and its chassis according to claim 1, characterized in that, The bottom plate pad is a circular pagoda-shaped conical body structure, and it is an inverted pagoda, and it is directly placed in the inverted conical groove without screw fixation, and the angle thereof is the same as that of the inverted conical groove, and the upper end thereof is 3-8mm higher than the upper plane of the inverted conical groove, and the lower end thereof is 3-5mm exposed from the bottom of the bottom flat surface of the bottom plate, and the number of the bottom plate pads is the same as that of the inverted conical grooves, which is four.

Images