Abrasive paper replacing mechanism for grinding machine

Abstract

The utility model relates to the technical field of abrasive paper replacement, and discloses an abrasive paper replacement mechanism for a polisher, which comprises a casing, a motor is mounted at the center of the top of the casing, the output end of the motor extends into the motor and is connected with a lead screw through a bearing, and limiting blocks are arranged at two ends of the inner wall of the motor. A machining groove is formed in the bottom end of the inner wall of the motor, the outer wall of the lead screw is sleeved with a lower pressing plate in a threaded mode, an ejector rod extending out of the lower pressing plate is arranged on the inner side of the lower pressing plate, and a ball is arranged at the position, making contact with the surface of the limiting block, of one end of the ejector rod. Abrasive paper to be placed is placed at the position of the surface of the viscous layer, the lead screw rotates, the limiting block descends till the limiting block is relatively far away from the left edge and the right edge of the limiting block and the connecting and fixing block makes contact with the viscous layer, rapid fixing of the abrasive paper is achieved, edge folding and wrinkling are prevented, grinding scraps are scraped and collected through the scraper, and the grinding efficiency is improved. Scraps are prevented from being accumulated to affect use, and the purpose of rapidly cleaning the scraps is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sandpaper replacement, in particular to a sandpaper replacement mechanism for a grinding machine. Background Art

[0002] The metal products industry includes structural metal products manufacturing, metal tool manufacturing, container and metal packaging container manufacturing, stainless steel and similar daily metal products manufacturing, etc. With the progress of society and the development of science and technology, metal products are increasingly used in industry, agriculture and various fields of people's lives, creating more and more value for society.

[0003] An existing patent (publication number: CN209350002U) discloses a metal product grinder that is easy to replace sandpaper. The sandpaper has a disassembly and installation mechanism formed by Velcro and an adhesive layer and a reserved groove above the sandpaper. The staff can regularly replace the sandpaper according to its usage, thereby improving the grinding efficiency.

[0004] However, the above technical solution has certain shortcomings. When the sandpaper is installed, the sandpaper is bonded by Velcro. However, when the sandpaper contacts the surface of the metal workpiece for grinding, the sandpaper becomes wrinkled and folded, and the sandpaper falls off and becomes difficult to use, which reduces the efficiency of manual sandpaper replacement. Therefore, a sandpaper replacement mechanism for a grinder is proposed. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a sandpaper replacement mechanism for a grinding machine to solve the technical problems raised in the above background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sandpaper replacement mechanism for a grinding machine, comprising a housing, a motor is installed at the top center of the housing, the output end of the motor extends into the housing and is connected to a screw rod through a coupling, clamping assemblies are provided at both ends of the inner wall of the housing, and a scraping assembly is provided at the bottom end of the inner wall of the housing;

[0007] The cam is provided with a plurality of connecting rods, each of which is provided with a plurality of connecting rods, and the connecting rods are connected with a plurality of connecting rods at the plurality of contacting positions.

[0008] As an optimal technical scheme of the utility model, the scraping assembly includes a processing groove fixedly installed at the center position of the bottom end of the casing, and two groups of connecting plates are installed at both ends of the casing near the processing groove, and each group of the connecting plates is perpendicular to one end of the lower pressure plate and is provided with a pressure block, the outer wall of the pressure block is sleeved with a telescopic spring three, and the two ends of the telescopic spring three are respectively fixed to the connecting plate and the bottom end of the pressure block, and one end of the pressure block is rotatably connected with two groups of connecting rods, and the two groups of connecting rods are staggered, and one end of each group of the connecting rods is installed with a sliding sleeve, and the inner wall of each group of the sliding sleeves is sleeved with a sliding rod, and a scraper is provided at the contact position between the bottom end of each group of sliding sleeves and the inner wall surface of the casing, and a collecting groove is opened between each group of scrapers on both sides of the scraping assembly, and the internal movable connection of the collecting groove extends to the collection box outside the casing.

[0009] As a preferred technical solution of the utility model, a semicircular ball groove is provided at the contact position between the inner wall cavity of the lower pressure plate and the surface of the sphere, and the size of the semicircular ball groove matches the sphere.

[0010] As a preferred technical solution of the utility model, a closing door is rotatably connected to the front surface of the housing, and the closing door is made of a transparent acrylic plate.

[0011] As a preferred technical solution of the utility model, one end of the screw rod is connected to the inner bottom end of the casing through a bearing, and a thread is provided at the contact position between the outer wall of the screw rod and the lower pressure plate.

[0012] As a preferred technical solution of the utility model, a hollow fixing sleeve that fits the outer wall of the ejector rod is fixedly provided on the inner wall of the cavity of the lower pressure plate, and the inner wall of the hollow fixing sleeve matches the size of the ejector rod.

[0013] As a preferred technical solution of the utility model, a guide rod penetrating both sides of the inner wall of the lower pressing plate is provided in the housing, and a matching through hole is opened in the lower pressing plate at the contact position with the guide rod.

[0014] In summary, the utility model mainly has the following beneficial effects:

[0015] The utility model places the sandpaper to be placed at the surface position of the sticky layer, rotates the screw rod, and causes the limit block to descend until it is relatively far away from the left and right edges of the limit block, until the connecting fixing block contacts the sticky layer, thereby realizing rapid fixation of the sandpaper to prevent folding and wrinkling, and scraping and collecting the grinding waste by the scraper to prevent the waste from accumulating and affecting the use, thereby realizing the purpose of quickly cleaning the waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0017] Figure 2 It is a front cross-sectional view of the lower pressing plate and the ejector rod of the utility model;

[0018] Figure 3 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0019] Figure 4 It is a three-dimensional structural diagram of the extension spring and the viscous layer of the utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the scraper and collection box of the utility model.

[0021] In the figure: 100, casing;

[0022] 120. Clamping assembly; 130. Scraping assembly; 110. Motor; 111. Screw rod; 121. Limit block; 122. Lower pressure plate; 123. Ejector rod; 124. Ball; 125. Telescopic spring one; 126. Telescopic spring two; 127. Round ball; 128. Connecting and fixing block; 129. Tension spring; 1291. Viscous layer; 131. Processing groove; 132. Connecting plate; 133. Pressure block; 134. Telescopic spring three; 135. Connecting rod; 136. Sliding sleeve; 137. Sliding rod; 138. Scraper; 139. Collecting groove; 1391. Collecting box. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0024] The following describes an embodiment of the utility model based on its overall structure.

[0025] A sandpaper replacement mechanism for a grinding machine, such as Figure 1-5As shown, it includes a housing 100, a motor 110 is installed at the top center position of the housing 100, the output end of the motor 110 extends into the housing 100 and is connected to a screw rod 111 through a coupling, a clamping assembly 120 is provided at both ends of the inner wall of the housing 100, and a scraping assembly 130 is provided at the bottom end of the inner wall of the housing 100; the clamping assembly 120 includes a limit block 121 fixedly installed at both ends of the inner wall of the housing 100, a lower pressure plate 122 is threadedly sleeved on the outer wall of the screw rod 111, an ejector rod 123 extending from the lower pressure plate 122 is provided inside the lower pressure plate 122, a ball 124 is provided at a position where one end of the ejector rod 123 contacts the surface of the clamping assembly 120, and the outer wall of the ejector rod 123 is sleeved There is a telescopic spring 125, the two ends of which are respectively fixed to the outer wall of the ejector rod 123 and the end of the telescopic spring 125, and the two ends of the ejector rod 123 are located in the cavity of the lower pressure plate 122. A telescopic spring 126 is arranged in the cavity of the lower pressure plate 122 at both ends of the ejector rod 123, and a ball 127 is arranged in the cavity of the lower pressure plate 122 at a position in contact with the inner wall surface of the cavity of the lower pressure plate 122. The two ends of the telescopic spring 126 are respectively fixed to the ball 127 and the ejector rod 123, and the two ends of the ejector rod 123 extending out of the outer side of the lower pressure plate 122 are rotatably provided with two groups of connecting and fixing blocks 128, and each group of connecting and fixing blocks 128 and the two ends of the ejector rod 123 are provided with a tension spring 129, and the bottom end of the lower pressure plate 122 is provided with a sticky layer 1291.

[0026] The sandpaper to be placed is placed on the surface of the adhesive layer 1291. After the motor 110 is started, the screw 111 rotates to move the clamping assembly 120 until it is relatively far away from the left and right edges of the ball 124. At this time, the ejector rod 123 extends out from the lower pressure plate 122, driving the connecting and fixing block 128 to rotate around the contact point with the ejector rod 123 under the pull of the tension spring 129 until the ball 124 contacts the edge of the clamping assembly 120. At this time, the telescopic spring 125 is compressed, driving the telescopic spring 2 126 to lift the ball 127 and engage with the semicircular ball groove on the inner wall of the cavity of the lower pressure plate 122, and the ejector rod 123 is engaged and fixed in the lower pressure plate 122, forcing the connecting block 128 to rotate around the contact point with the ejector rod 123 under the pull of the tension spring 129, until the ball 124 contacts the edge of the clamping assembly 120. The fixing block 128 rotates and opens vertically around the contact point with the ejector rod 123, losing contact and fixation with the sandpaper. When the sandpaper to be placed is placed on the surface of the adhesive layer 1291 for quick installation, the clamping assembly 120 is lowered until the sphere 124 is relatively far away from the left and right edges of the clamping assembly 120. At this time, the ejector rod 123 extends out of the lower pressure plate 122, driving the connecting and fixing block 128 to rotate around the contact point with the ejector rod 123 under the pull of the tension spring 129 until the connecting and fixing block 128 contacts the adhesive layer 1291, thereby realizing rapid fixation of the sandpaper, saving time for sandpaper replacement, improving work efficiency, and preventing wrinkles and folds on the sandpaper during workpiece grinding.

[0027] Please refer to Figure 1 and Figure 5The scraping assembly 130 includes a processing groove 131 fixedly installed at the center of the bottom end of the housing 100. Two sets of connecting plates 132 are installed at both ends of the housing 100 near the processing groove 131. Each set of connecting plates 132 is perpendicular to the lower pressure plate 122 and is provided with a pressure block 133 at one end. The outer wall of the pressure block 133 is sleeved with a telescopic spring 3 134. The two ends of the telescopic spring 3 134 are respectively fixed to the connecting plate 132 and the bottom end of the pressure block 133. One end of the pressure block 133 is rotatably connected to the lower pressure plate 122. There are two groups of connecting rods 135, which are staggered. A sliding sleeve 136 is installed at one end of each group of connecting rods 135. A sliding rod 137 is sleeved on the inner wall of each group of sliding sleeves 136. A scraper 138 is provided at the contact position between the bottom end of each group of sliding sleeves 136 and the inner wall surface of the casing 100. A collecting groove 139 is opened on both sides of the scraping assembly 130 between each group of scrapers 138. The internal movable connection of the collecting groove 139 extends to the collection box 1391 outside the casing 100.

[0028] The grinding debris is collected and scraped off, and the lower pressure plate 122 is pressed down to the pressure block 133, causing the two sets of connecting rods 135 and the connected sliding sleeves 136 to open on both sides of the sliding rod 137 sleeved along the inner wall. At this time, when the lower pressure plate 122 is polished and rises, the telescopic spring three 134 drives the pressure block 133 to lift up and return to the original point, so that the two sets of connecting rods 135 connected to one end of the pressure block 133 rotate and drive the scraper 138 to scrape the waste debris accumulated on both sides of the scraping component 130 into the collection groove 139, and pull the collection box 1391 to collect and dump the waste debris, so as to avoid the accumulation of waste debris and difficulty in cleaning.

[0029] Please refer to Figure 1 and Figure 2 A semicircular ball groove is provided at the contact position between the inner wall cavity of the lower pressing plate 122 and the surface of the sphere 124 , and the size of the semicircular ball groove matches that of the sphere 124 .

[0030] The ball 124 can be engaged with the semicircular ball groove to achieve the effect of extending and fixing the ejection rod 123 .

[0031] Please refer to Figure 1 A closing door is rotatably connected to the front surface of the housing 100, and the closing door is made of a transparent acrylic plate.

[0032] The housing 100 can be closed by closing the closing door to prevent dust from splashing and facilitate observation of the inside of the housing 100.

[0033] Please refer to Figure 1 One end of the screw rod 111 is connected to the bottom end of the housing 100 through a bearing, and a thread is provided at the contact position between the outer wall of the screw rod 111 and the lower pressure plate 122.

[0034] When the screw rod 111 rotates, the lower pressing plate 122 with the outer wall thread sleeve can move up and down.

[0035] Please refer to Figure 2 A hollow fixing sleeve that fits the outer wall of the ejection rod 123 is fixedly provided on the inner wall of the cavity of the lower pressing plate 122 , and the inner wall of the hollow fixing sleeve is consistent with the size of the ejection rod 123 .

[0036] When the ejector rod 123 extends out of the cavity of the lower pressing plate 122 , the hollow fixing sleeve can enable the ejector rod 123 to extend smoothly.

[0037] The sandpaper to be placed is placed on the surface of the adhesive layer 1291. After the motor 110 is started, the screw 111 rotates to move the clamping assembly 120 until it is relatively far away from the left and right edges of the ball 124. At this time, the ejector rod 123 extends out from the lower pressure plate 122, driving the connecting and fixing block 128 to rotate around the contact point with the ejector rod 123 under the pull of the tension spring 129 until the ball 124 contacts the edge of the clamping assembly 120. At this time, the telescopic spring 125 is compressed, driving the telescopic spring 2 126 to lift the ball 127 and engage with the semicircular ball groove on the inner wall of the cavity of the lower pressure plate 122, and the ejector rod 123 is engaged and fixed in the lower pressure plate 122, forcing the connecting block 128 to rotate around the contact point with the ejector rod 123 under the pull of the tension spring 129, until the ball 124 contacts the edge of the clamping assembly 120. The fixing block 128 rotates around the contact point with the ejector rod 123 and opens vertically, losing contact and fixation with the sandpaper. When the sandpaper to be placed is placed on the surface of the adhesive layer 1291 for quick installation, the clamping assembly 120 is lowered until the sphere 124 is relatively far away from the left and right edges of the clamping assembly 120. At this time, the ejector rod 123 extends out of the lower pressure plate 122, driving the connecting and fixing block 128 to rotate around the contact point with the ejector rod 123 under the pull of the tension spring 129 until the connecting and fixing block 128 contacts the adhesive layer 1291, thereby realizing quick fixation of the sandpaper, saving the time of sandpaper replacement, improving work efficiency, and preventing the sandpaper from wrinkling and folding during the workpiece grinding process;

[0038] The grinding debris is collected and scraped off, and the lower pressure plate 122 is pressed down to the pressure block 133, causing the two sets of connecting rods 135 and the connected sliding sleeves 136 to open on both sides of the sliding rod 137 sleeved along the inner wall. At this time, when the lower pressure plate 122 is polished and rises, the telescopic spring three 134 drives the pressure block 133 to lift up and return to the original point, so that the two sets of connecting rods 135 connected to one end of the pressure block 133 rotate and drive the scraper 138 to scrape the waste debris accumulated on both sides of the scraping component 130 into the collection groove 139, and pull the collection box 1391 to collect and dump the waste debris, so as to avoid the accumulation of waste debris and difficulty in cleaning.

[0039] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A sandpaper replacement mechanism for a grinding machine, comprising a housing (100), characterized in that: A motor (110) is installed at the top center of the casing (100); an output end of the motor (110) extends into the casing (100) and is connected to a screw rod (111) via a coupling; clamping assemblies (120) are provided at both ends of the inner wall of the casing (100); and a scraping assembly (130) is provided at the bottom end of the inner wall of the casing (100); The clamping assembly (120) includes a limit block (121) fixedly mounted on both ends of the inner wall of the housing (100); the outer wall of the screw rod (111) is threadedly sleeved with a lower pressure plate (122); an ejector rod (123) extending from the lower pressure plate (122) is provided inside the lower pressure plate (122); a sphere (124) is provided at a position where one end of the ejector rod (123) contacts the surface of the clamping assembly (120); a telescopic spring (125) is sleeved on the outer wall of the ejector rod (123); the two ends of the telescopic spring (125) are respectively fixed to the outer wall of the ejector rod (123) and the end of the telescopic spring (125); and the ejector rod (123) is provided with a plurality of springs (125) extending from the outer wall of the ejector rod (123). 23) A telescopic spring (126) is provided at both ends in the cavity of the lower pressure plate (122), a ball (127) is provided in the cavity of the lower pressure plate (122) at a position in contact with the inner wall surface of the cavity of the lower pressure plate (122), the two ends of the telescopic spring (126) are respectively fixed to the ball (127) and the ejector rod (123), and two groups of connecting and fixing blocks (128) are rotatably provided at both ends of the ejector rod (123) extending out of the outer side of the lower pressure plate (122), and each group of the connecting and fixing blocks (128) and the two ends of the ejector rod (123) are provided with a tension spring (129), and a sticky layer (1291) is provided at the bottom end of the lower pressure plate (122).

2. The sandpaper replacement mechanism for a grinding machine according to claim 1, characterized in that: The scraping assembly (130) comprises a processing groove (131) fixedly mounted at the center position of the bottom end of the housing (100), and two groups of connecting plates (132) are mounted on the housing (100) at both ends close to the processing groove (131), and each group of connecting plates (132) is provided with a pressure block (133) at one end perpendicular to the lower pressure plate (122), and the outer wall of the pressure block (133) is sleeved with a telescopic spring three (134), and the two ends of the telescopic spring three (134) are respectively fixed to the connecting plate (132) and the bottom end of the pressure block (133), and one end of the pressure block (133) is rotatably connected to the lower pressure plate (122). Two groups of connecting rods (135) are connected, and the two groups of connecting rods (135) are staggered. A sliding sleeve (136) is installed at one end of each group of connecting rods (135). The inner wall of each group of sliding sleeves (136) is sleeved with a sliding rod (137). A scraper (138) is provided at the position where the bottom end of each group of sliding sleeves (136) contacts the inner wall surface of the casing (100). A collecting groove (139) is provided between each group of scrapers (138) on both sides of the scraping assembly (130). The interior of the collecting groove (139) is movably connected to a collecting box (1391) extending to the outside of the casing (100).

3. The sandpaper replacement mechanism for a grinding machine according to claim 1, characterized in that: A semicircular ball groove is provided at the contact position between the inner wall cavity of the lower pressing plate (122) and the surface of the sphere (124), and the size of the semicircular ball groove matches that of the sphere (124).

4. The sandpaper replacement mechanism for a grinding machine according to claim 1, characterized in that: The front surface of the housing (100) is rotatably connected to a closing door, and the closing door is made of a transparent acrylic plate.

5. The sandpaper replacement mechanism for a grinding machine according to claim 1, characterized in that: One end of the screw rod (111) is connected to the inner bottom end of the housing (100) via a bearing, and a thread is provided at the contact position between the outer wall of the screw rod (111) and the lower pressure plate (122).

6. The sandpaper replacement mechanism for a grinding machine according to claim 1, characterized in that: A hollow fixing sleeve that fits the outer wall of the ejector rod (123) is fixedly provided on the inner wall of the cavity of the lower pressing plate (122), and the inner wall of the hollow fixing sleeve matches the size of the ejector rod (123).

7. The sandpaper replacement mechanism for a grinding machine according to claim 1, characterized in that: The housing (100) is provided with guide rods penetrating both sides of the inner wall of the lower pressing plate (122), and matching through holes are provided in the lower pressing plate (122) at positions in contact with the guide rods.

Images